Apple IMAC User Manual
Apple IMAC - ALL-IN-ONE DESKTOP - 3.06GHz Intel Core 2 Duo Manual
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Apple IMAC manual content summary:
- Apple IMAC | User Manual - Page 1
K Service Source iMac - Apple IMAC | User Manual - Page 2
K Service Source Hot Issues iMac - Apple IMAC | User Manual - Page 3
to highlight unique or highpriority product issues that you should be aware of before servicing the iMac computer. This chapter alerts you to important issues and provides pointers to other areas in the manual where more complete information can be found. This chapter is not intended to replace - Apple IMAC | User Manual - Page 4
memory will not work in the iMac computer. System problems will result if EDO memory is installed. (See "SDRAM DIMMs" in the Basics chapter and refer to the iMac section of the Memory Guide.) Note: Customers are allowed to upgrade the memory in iMac computers and may inadvertently mix EDO and SDRAM - Apple IMAC | User Manual - Page 5
machines. Never install the 256K or 512K video memory DIMMs used in older Macintosh computers. (See "SGRAM Video Memory" in the Basics chapter.) Error Beeps If problems are detected upon startup, the iMac system will sound one or more error beeps. (See "Error Beeps" in the Troubleshooting chapter.) - Apple IMAC | User Manual - Page 6
Hot Issues HFS Plus Formatted Drives - 4 HFS Plus Formatted Drives The iMac hard drive is formatted from the factory with Mac OS Extended format, also referred to as HFS Plus. drive corruption and loss of all data on the hard drive. (See "HFS Plus Formatted Drives" in the Troubleshooting chapter.) - Apple IMAC | User Manual - Page 7
Forcing a Restart If holding down the Command, Control, and Power keys fails to restart the iMac computer after a system hang, you can force a least 30 seconds and then reconnect the power cord. 3. Restart the iMac by pressing the power button on either the keyboard or the front of the computer. - Apple IMAC | User Manual - Page 8
Supported - 6 External Displays Not Supported Connecting an external display to the iMac is not supported by Apple. The db-15 port on the iMac was not designed to support an external monitor. Apple designed iMac with a very sharp, 15-inch internal display and no video-out port to connect a second - Apple IMAC | User Manual - Page 9
, CD Firmware Update 1.0 The CD Firmware Update reduces the amount of vibration caused by certain CDs in the internal CD-ROM drive. • TIL article #44005, iMac Update 1.0 Software Apple made improvements to its Universal Serial Bus (USB) software. • TIL article # 58178, About - Apple IMAC | User Manual - Page 10
USB devices when starting up, improves the startup time when many USB devices are connected, and enables new USB solutions. You do not have to install iMac Update 1.0 before you install iMac Update 1.1. • TIL article # 58370, iMac: How to Ensure Firmware Update is Successful If you performed the - Apple IMAC | User Manual - Page 11
CDs from the iMac CD-ROM tray (of both /A and /B models), the eject mechanism sometimes does not reset into a position that allows the tray door to close properly. Instead of replacing the CD-ROM assembly, the eject mechanism can be manually reset with a paperclip to correct the problem. Refer to - Apple IMAC | User Manual - Page 12
will identify service parts (upgrades, changes, or variations) with the word Rev. (Revision) or Ver. (Version) appended to the part name. For example: 661-2193 Card, Processor, 333 MHz, Rev. 3 661-2113 Board, Logic, iMac, Ver. 2 • Revision (Rev.)= A change or upgrade to the part. The new Rev. is - Apple IMAC | User Manual - Page 13
the Ver. 2 iMac service parts. Exchange or replace the Ver. 2 parts like-for-like, they are not backward compatible. Identify the part correctly before replacing a module or replacement part. Refer to the Service Parts database for additional information. • 661-2166 Analog/Video Board, Ver. 2 • 661 - Apple IMAC | User Manual - Page 14
CD-ROM Drive Released (7/99) - 12 New CD-ROM Drive Released (7/99) Apple recently released a new 24x CD-ROM drive service part for five-color iMacs with 266MHz processors or faster only. Please note that this new 24x CD-ROM, called the Version 2, is not compatible with the 24x CD-ROM drive in the - Apple IMAC | User Manual - Page 15
• If you are replacing a 24x CD-ROM drive in a Bondi Blue iMac (233MHz), order the 661-2076 CD-ROM drive. • If you are replacing a 24x CD-ROM drive in a five-color iMac (266MHz or greater), order 661-2207, CD-ROM drive, 24X, Ver. 2. Refer to the Service Parts database for additional information. - Apple IMAC | User Manual - Page 16
K Service Source Basics iMac - Apple IMAC | User Manual - Page 17
Basics - 1 Overview - Apple IMAC | User Manual - Page 18
Basics Product Description - 2 Product Description The iMac is an all-in-one product with a unique industrial design that is targeted specifically for the consumer and education market. To view a QuickTime movie of the iMac click here. - Apple IMAC | User Manual - Page 19
hard drive (on the 266 MHz and 333 MHz) • 24x-speed ATAPI CD-ROM drive • 56K hardware modem • Two Universal Serial Bus (USB) Type A ports supporting USB devices • One RJ-11 modem port - Apple IMAC | User Manual - Page 20
. The sound input port also supports a standard stereo (miniplug-to-RCA) cable adapter for connecting stereo equipment to your computer. • Clock/Calendar featuring CMOS custom circuitry with long-life battery • Fan speed thermally controlled • Energy Saver control panel • Built-in 2D and 3D hardware - Apple IMAC | User Manual - Page 21
Models The following information describes the main features of the 233 MHz and 266 MHz iMac models. Note: Apple regularly makes modest design improvements to products during their life cycles. These changes may include minor changes to the logic board or additions in the - Apple IMAC | User Manual - Page 22
• Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM Built-in + 4 MB SGRAM DIMM • Hard Drive: 4 GB • Graphic Chip: ATI Rage Pro Blueberry, (no IrDA) M7345LL/A • OS Software: Mac OS 8.5.1 • ProcessorSpeed: 266 MHz • Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM Built - Apple IMAC | User Manual - Page 23
MHz • Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM Built-in + 4 MB SGRAM DIMM • Hard Drive: 6 GB • Graphic Chip: ATI Rage Pro Turbo Grape, (no IrDA) M7390LL/A • OS Software: Mac OS 8.5.1 • ProcessorSpeed: 266 MHz • Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM - Apple IMAC | User Manual - Page 24
MHz • Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM Built-in + 4 MB SGRAM DIMM • Hard Drive: 6 GB • Graphic Chip: ATI Rage Pro Turbo Lime, (no IrDA) M7392LL/A • OS Software: Mac OS 8.5.1 • ProcessorSpeed: 266 MHz • Reset Procedure: Front Power Button • Standard SGRAM: 2 MB SGRAM - Apple IMAC | User Manual - Page 25
Basics Model Comparison - 9 333 MHz iMac Models On April 14, 1999 Apple announced the 333 MHz iMac. There were no other configuration changes to these computers other than the processor speed. • Blueberry, M7440LL/A • Strawberry, M7441LL/A • Grape, M7442LL/A • Tangerine, M7443LL/A • Lime, M7444LL/A - Apple IMAC | User Manual - Page 26
and file sharing with similarly equipped systems. The iMac logic board has one IrDA (Infrared Data Association) compliant connector that offers a maximum transfer speed of 4 MB/sec (AppleTalk and TCP/IP). The iMac also allows users to switch to the IRTalk protocol by using the Infrared Control Panel - Apple IMAC | User Manual - Page 27
Basics New Technologies - 1 1 For information about whether iMac computers can communicate with other third-party IrDA compliant devices, contact the manufacturer of the third-party device. The iMac supports the following Apple devices on the IrDA channel: • PowerBook 2400 and 3400 • Macintosh - Apple IMAC | User Manual - Page 28
, you will not be able to make infrared connections from the iMac. If you have used infrared communications with other Apple products, you will notice a difference with iMac. The lens in the rear of the iMac has been updated to support IrDA. The new lens has about a 30 degree viewing angle. There - Apple IMAC | User Manual - Page 29
without having to shut down the host computer.) USB devices can include keyboards, mice, joysticks, telephones, scanners, printers, security dongles, microphones, speakers, floppy drives, cameras, modems, CD-ROM drives, etc. USB technology can provide support for anticipated future devices as well - Apple IMAC | User Manual - Page 30
Basics New Technologies - 1 4 connect peripheral devices to a host computer on the fly, without having to hassle with • Shutting down/restarting the computer • Opening the computer case • Installing a card • ID conflicts • Termination issues • Loading device drivers (although some devices may - Apple IMAC | User Manual - Page 31
Basics New Technologies - 1 5 second (Mbps) • Automatic adjustment of bandwidth allocation among devices. - Apple IMAC | User Manual - Page 32
Basics New Technologies - 1 6 USB devices use two types of plugs, Type A and Type B: Figure 1: USB Plug Types - Apple IMAC | User Manual - Page 33
. "Downstream" means moving down the device chain, away from the host computer. Figure 2 on the next page illustrates this concept. High speed connections (12 Mbps) use shielded cabling to reduce interference at higher connection rates, while low speed (1.5 Mbps) may not. Each connector has four - Apple IMAC | User Manual - Page 34
Basics New Technologies - 1 8 Figure 2: Defining Upstream/Downstream Terms - Apple IMAC | User Manual - Page 35
, print that photo, unplug the printer • then plug in a modem, e-mail the photo to a friend, unplug the modem • then plug in a storage drive, backup the photo file, unplug the drive all without having to restart the host computer, or even go into sleep mode. USB also provides a faster connection and - Apple IMAC | User Manual - Page 36
system that supports USB. (Both iMac and Windows 98 support USB.) • A host, typically a controller chip set residing in the personal computer, controls the USB system and allocates bandwidth per device. There is only one host per USB network, and as such USB is designed for connecting peripherals to - Apple IMAC | User Manual - Page 37
Basics New Technologies - 2 1 Type A Ports FIgure 3: USB Ports - Apple IMAC | User Manual - Page 38
available from hubs. If a device (like a keyboard or display) has Type A ports for additional devices to connect to, it must have an internal hub. This information is good to know when you need to identify, map out, and troubleshoot hub and device connectivity. Note: USB ports, cables, and plugs - Apple IMAC | User Manual - Page 39
Hubs can be freestanding, or embedded in other items (displays, keyboards, etc.). Most freestanding external hubs provide 4 Type A ports, but this is not a always the case. Note: When troubleshooting power errors that buspowered hubs can't be connected to bus-powered hubs, since not enough power is - Apple IMAC | User Manual - Page 40
Basics New Technologies - 2 4 • Devices, which connect to hubs and provide expanded functionality to the computer. Devices connect to the host using either the 1.5 or the 12 Mbps connection speed. Like hubs, devices may be "bus-powered" by the USB network, or be "self-powered" by an external power - Apple IMAC | User Manual - Page 41
Basics New Technologies - 2 5 The following tree diagram shows an example of a USB network: - Apple IMAC | User Manual - Page 42
Basics New Technologies - 2 6 Root Tier Tier One Host Hub Can both Reside inside CPU Case Tier Two Hub Device Device Hub Hub Tier Three Device Device Device Tier Four Device Device Figure 5: USB Network Tiers - Apple IMAC | User Manual - Page 43
is six. This can be tricky to track sometimes, since hubs can be hidden in CPU cases, displays, keyboards, etc. • Bus-powered hubs can't be connected to bus-powered hubs due to power limitations. A keyboard with an internal hub is a good example of a bus-powered hub. • The maximum cable length - Apple IMAC | User Manual - Page 44
for USB does not yet support USB devices like microphones and speakers. In any case, customers should purchase only USB devices that have the Mac-OS seal of approval: 2. If necessary, run the installer for the device driver. Check the instructions that came with the device for details. 3. Provide - Apple IMAC | User Manual - Page 45
Basics New Technologies - 2 9 the instructions that came with the device for details. 4. Plug the device in to an available hub port. The device should be sensed automatically, be ready for use. When you are finished using the device, you can leave it plugged in, or unplug it to free up the port. - Apple IMAC | User Manual - Page 46
Basics Features New Technologies - 3 0 - Apple IMAC | User Manual - Page 47
The iMac computer features a built-in 56K hardware modem. This internal modem supports both K56-Flex and V.90 communications protocols. Modem Performance Issues To be able to accomplish 56K connections, your Internet Service Provider or service you are connecting to must have digital connections to - Apple IMAC | User Manual - Page 48
2 If you have a modem that supports this higher speed protocol, you can theoretically download data at up to 56,000 bps. digital equipment is only on your ISP's end. While the technology theoretically can achieve download speeds up to 56 kbps, current FCC rules limit the power output of modems such - Apple IMAC | User Manual - Page 49
Basics Modem - 3 3 always connect at 33.6 speeds or less. Also, line noise will be a major factor on how fast your 56K modem connects. For 33.6 Kbps or slower modems, line noise is still a factor, but it is much less of an issue for achieving good connections. - Apple IMAC | User Manual - Page 50
Basics CD-ROM Drive - 34 CD-ROM Drive The CD-ROM drive is located beneath the screen on the front of the iMac. To open the tray, press the button in the middle and carefully pull open the tray until it lightly clicks. To close the drive, push - Apple IMAC | User Manual - Page 51
The power filter board is an EMC filtering board, which is mounted on the logic board/mass storage chassis. It controls the DC power supply connection from the enclosure and sits between the power supply board and the logic board. It is highly unlikely that the power filter board will ever fail, but - Apple IMAC | User Manual - Page 52
board to the IrDA connector on the logic board. The same is true for connections between the logic board and the video and audio on/off boards. Note: Apple does not support connecting an external monitor on the iMac. Connecting an external monitor will void the warranty. Refer to TIL article #43016. - Apple IMAC | User Manual - Page 53
AC line on the iMac power supply board. The fuse is located at F901 (near the bottom right corner of the installed power supply board as you face the back side of the board). Instructions for how to test the fuse are included in the "Testing for Power" section of the Troubleshooting chapter. - Apple IMAC | User Manual - Page 54
The graphics subsystem on the iMac logic board is designed with the ATI Rage IIc graphics controller ASIC. The RAGE IIc ASI contains 2D and 3D acceleration engines, a bidirectional digital video port, a front-end scaler, a back-end scaler, CRT controller, and PCI bus master capability. The - Apple IMAC | User Manual - Page 55
The 16-bit stereo audio circuitry provides high-quality sound input and output through the built-in microphone and speakers. The user can also connect external input and output devices by way of the sound input and output jacks. The sound system supports sample sizes up to 16 bits at a sample rate - Apple IMAC | User Manual - Page 56
Basics Sound Input - 4 0 Sound Input The sound system accepts inputs from three possible sources: • Built-in microphone • External stereo sound input jack • Sound from internal CD player - Apple IMAC | User Manual - Page 57
Basics Sound Output - 4 1 Sound Output The sound system sends computer-generated sounds to the built-in speakers, the sound output jack, and the headphone jacks. The sound system provides user-selectable SRS 3D stereo enhancement. - Apple IMAC | User Manual - Page 58
Basics Video Display - 4 2 Video Display The built-in video display uses a 15-inch CRT and supports three resolutions. The table below lists the resolutions and pixel depths supported with the standard 2 MB of SGRAM and with expanded SGRAM. Resolution: 640 x 480 • Vertical rate: 117.233 Hz • Pixel - Apple IMAC | User Manual - Page 59
Basics Video Display - 4 3 Resolution: 1024 x 768 • Vertical rate: 75.03 Hz • Pixel depth (2 MB SGRAM): 16 bits • Pixel depth (4 or 6 MB SGRAM): 32 bits - Apple IMAC | User Manual - Page 60
the CPU to access the fast L2 cache storage through a highspeed bus without addressing the slower system bus or competing with other devices attached to the system bus running at various multiples of the core PLL CPU speed. With high speed L2 SRAM and a dedicated L2 bus, the CPU can access stored - Apple IMAC | User Manual - Page 61
Basics Backside Cache - 4 5 PowerPC G3, and a 2.5 L2 bus ratio, the backside cache bus speed will be 100MHz, twice the speed of the system bus. - Apple IMAC | User Manual - Page 62
iMac computer uses SDRAM in a SO-DIMM slot that is smaller than the RAM slots for previous desktop Power Macintosh computers iMac with both RAM slots populated. In addition, end users are permitted to install/upgrade their own RAM on the iMac computer. Therefore, you should not assume there is a free - Apple IMAC | User Manual - Page 63
MB. This can be achieved by installing a 64 MB module in the upper slot and a 64 MB module in the lower slot. • 233 MHz/B iMac: Maximum size supported is128 MB per slot, totaling 256 MB. This can be achieved by installing a 128 MB module in the upper slot and a 128 MB module in - Apple IMAC | User Manual - Page 64
show any RAM increase in the "About this Computer" window. Note: If EDO memory is mixed with SDRAM memory, the computer will sound two beeps at startup. (See "Power-On Self Test" in Troubleshooting for more information.) SGRAM Video Memory The iMac logic board comes with 2 MB of Synchronous Graphic - Apple IMAC | User Manual - Page 65
DIMM (SO-DIMM) to increase video memory up to a maximum of 6 MB. Apple supports a 4 MB SGRAM SO-DIMM that is 32-bit wide, 144-pin, fastpaged, 83 MHz/12 ns cycle time or faster. Important: Use only SGRAM SO-DIMMs. Never use the 256K or 512K video memory DIMMs used in older Macintosh computers. - Apple IMAC | User Manual - Page 66
Basics Views Memory - 50 - Apple IMAC | User Manual - Page 67
Basics Front View Front View - 51 - Apple IMAC | User Manual - Page 68
Basics Rear View Rear View - 5 2 - Apple IMAC | User Manual - Page 69
Basics Left Side View Left Side View - 5 3 - Apple IMAC | User Manual - Page 70
Basics Right Side View Right Side View - 5 4 - Apple IMAC | User Manual - Page 71
Basics Internal Locator Internal Locator - 55 - Apple IMAC | User Manual - Page 72
Basics iMac Logic Board - 5 6 iMac Logic Board Processor Card *Modem Connector *Power Filter Connector SGRAM Slot Graphics Chip Product ID Label J1 J18 J19 J20 CUDA Reset Button Modem Ethernet USB Speakers Microphone J6 IrDA Connector Battery J15 J16 J17 J13 J14 HD Power Video Hard Drive - Apple IMAC | User Manual - Page 73
Basics I/O Panel I/O Panel - 57 Sound In Type A Ports Sound Out (USB) Ethernet Reset Interrupt Modem - Apple IMAC | User Manual - Page 74
Basics Repair Strategy/Warranty I/O Panel - 58 - Apple IMAC | User Manual - Page 75
offers standard carry-in service only on the iMac computers (with the exception of US customers who purchase the AppleCare Service Plan, covered later in this section). Apple Service Providers planning to support the computer systems covered in this manual may purchase Service modules and parts to - Apple IMAC | User Manual - Page 76
through the AppleOrder (US only) or ARIS (Canada only) systems. USA Ordering US Service providers not enrolled in AppleOrder may fax their orders to Service Provider Support (512-9088125) or mail them to Apple Computer, Inc. Service Provider Support MS 212-SPS 2323 Ridgepoint Drive Austin, TX 78754 - Apple IMAC | User Manual - Page 77
Strategy and Ordering - 6 1 For US inquiries, please call Service Provider Support at 800-919-2775 and select option #1. Canadian Ordering Canadian Service providers not enrolled in ARIS may fax their orders to Service Provider Support in Canada (1800-903-5284). For Canadian inquiries, please call - Apple IMAC | User Manual - Page 78
the warranty/AppleCare program for the US and Canada. US Only The iMac computers are covered under the Apple One-Year Limited Warranty. The AppleCare Protection Plan is also available for these products. Service Providers are reimbursed for warranty and AppleCare Protection Plan repairs. For pricing - Apple IMAC | User Manual - Page 79
Basics Warranty - 63 Canada Only The iMac computers are covered under the Apple One-Year Limited Warranty. The AppleCare Protection Plan is also available for these products. Service Providers are reimbursed for warranty and AppleCare Protection Plan repairs. For pricing information, refer to - Apple IMAC | User Manual - Page 80
K Service Source Specifications iMac - Apple IMAC | User Manual - Page 81
be found in the Spec Database, which you can access at Service Source Online (http://service.info.apple.com) or on Service Source CD. Spec Database at Service Source Online From the Service Source Online home page, click Troubleshoot and Repair to access the main repair procedures page. Then click - Apple IMAC | User Manual - Page 82
K Service Source Troubleshooting iMac - Apple IMAC | User Manual - Page 83
Troubleshooting General General - 1 - Apple IMAC | User Manual - Page 84
Troubleshooting General/ Block Diagram - 2 Block Diagram The following illustration provides an overview of the iMac internal components and shows how they are connected. RGB Cable P301 Video Board CRT Power Cable P304 P305 P306 P302 P303 P701 P702 P502 Fan P508 Analog P506 P514 Board P505 - Apple IMAC | User Manual - Page 85
animation of how power flows through the iMac. Power Supply Board Fuse There is a fuse on the AC line on the power supply board (at F901) that can be replaced if the computer has no power. (Refer to the "No Power" symptom for a full troubleshooting scenario.) Before replacing the fuse, you should - Apple IMAC | User Manual - Page 86
on the front of the computer. If the system powers on, you can assume the AC outlet is good and the problem is with the keyboard. If the system still won't power on, try connecting to a different AC outlet. If the unit powers on this time, you most likely have a problem with the AC outlet. If - Apple IMAC | User Manual - Page 87
Troubleshooting General/ Testing for Power - 5 Plug in the computer, but leave the iMac powered OFF. Ground the black probe on the volt meter (by inserting it into the metal chassis). With one hand behind your back, touch the - Apple IMAC | User Manual - Page 88
the logic board/mass storage chassis. Plug in the iMac, but leave it powered OFF. Note: You may need to unplug the RGB video cable to access the power cable. Testing for Power power supply and that the power cable is likely OK. There still could be a problem with other pins on the cable, however. - Apple IMAC | User Manual - Page 89
Troubleshooting General/ Testing for Power - 7 At the Power Supply Board Note: The procedure below tests for +5 V on the original iMac power supply board, supply. Ground the black probe of a volt meter to the computer chassis. Plug in the iMac, but leave it powered OFF. Then, being careful not to - Apple IMAC | User Manual - Page 90
Troubleshooting General/ Testing for Power - 8 Note: The procedure below tests for +5 V on the test points on the power supply board. Ground the black probe of a volt meter to the computer chassis. Plug in the iMac, but leave it powered OFF. Then, being careful not to short together any pins, touch - Apple IMAC | User Manual - Page 91
Troubleshooting General/ Testing for Power - 9 At the Power Supply Board Fuse First remove the top access cover and then remove the CRT EMI shield to access the power supply board. ±Warning: You must unplug the iMac to test do a continuity test at the power supply board fuse. Note: You will need - Apple IMAC | User Manual - Page 92
Troubleshooting General/ The Cuda Chip - 1 0 The Cuda Chip The Cuda is a microcontroller chip. Its function is to: • Turn system power on and off. • Manage system resets from various commands. • Maintain parameter RAM (PRAM). • Manage the real-time clock. Many system problems can be resolved by - Apple IMAC | User Manual - Page 93
Troubleshooting General/ Resetting the Logic Board - 1 1 Resetting the Logic Board Resetting the logic board can resolve many system problems (see the 8. Reassemble the computer and test the unit. Note: This procedure resets the computer's PRAM. Be sure to check the computer's time/date and - Apple IMAC | User Manual - Page 94
machine is only restarted). If a problem is detected during the test, you will not hear a normal startup chime. Instead, the system will beep as explained below. Refer to "Error Beeps" later in this chapter for instructions on how to troubleshoot and repair an iMac that sounds error beeps at startup - Apple IMAC | User Manual - Page 95
are displayed on the screen. Click here to see an animation of how the video signal travels through the iMac. Sound In Flow Sound coming into the iMac system originates at the internal microphone located in the top front area of the system, or through an external microphone connected to the logic - Apple IMAC | User Manual - Page 96
Processor Module The iMac logic board comes with a removable processor module, which can be replaced. The processor should rarely fail and should be replaced only as a last resort. Processor modules can be ordered from Service. Logic Board Battery The battery on the logic board controls the stored - Apple IMAC | User Manual - Page 97
Troubleshooting General/ HFS Plus Formatted Drives - 1 5 HFS Plus Formatted Drives The hard drive in the iMac is problems with a hard drive that has been formatted with HFS+, Apple Computer recommends using Disk First Aid 8.2 (which is included on the system software CD that ships with the iMac - Apple IMAC | User Manual - Page 98
, which can be used to test the iMac modem connection. You should run this test if the modem is not able to dial out. To perform this test: 1. Locate and launch ClarisWorks. (Version 5.0 ships with the iMac computer.) 2. From the ClarisWorks New Document window, select Communications and click OK - Apple IMAC | User Manual - Page 99
charts in the order of most likely solution, try the cures in Apple Technical Support. No power. System is completely dead. No LED, no fan, no hard drive power, and the screen problem. 3 Possible bad USB keyboard. Verify the keyboard cable is connected properly to the computer.Disconnect the keyboard - Apple IMAC | User Manual - Page 100
Troubleshooting Symptom Charts/ Video Problems - 1 8 Yes: Replace the power supply to power filter cable. No: Go to next step. 7 Possible bad power supply board. Replace the power supply board. Video Problems No video, the screen is either completely black, or you will see horizontal rolling - Apple IMAC | User Manual - Page 101
Troubleshooting Symptom Charts/ Video Problems - 1 9 Solid gray screen, however, normal startup boot chime, power LED on, and the fan is running. 1 Reset parameter RAM. Hold down during startup. 2 Check that video/USB cable connections are secure between monitor, - Apple IMAC | User Manual - Page 102
Troubleshooting Symptom Charts/ Video Problems - 2 0 Distorted video. Screen geometry is out of adjustment or screen is out focus. 1 Adjust the focus using the Display Adjustment Utility on the MacTest Pro CD. (See "Focus" in the iMac Adjustments chapter for instructions.) 2 Adjust the screen - Apple IMAC | User Manual - Page 103
Troubleshooting Symptom Charts/ Video Problems - 2 1 A predominant color tint or color covering the screen. 1 Verify that the iMac unit is not near other equipment (such as speakers, radios, phones, fluorescent lighting, magnets, or other electronic equipment) that could affect the video display. - Apple IMAC | User Manual - Page 104
Troubleshooting Symptom Charts/ Error Beeps - 22 Error Beeps If you hear from one to five error beeps at startup with no boot chime, you have a hardware problem. 1 Do you hear one error beep at startup? Yes: Follow these steps to resolve the problem not EDO memory. (The iMac ships with SDRAM SO- - Apple IMAC | User Manual - Page 105
Troubleshooting Symptom Charts/ Memory Error Dialog Box - 23 Memory Error Dialog Box An error dialog message appears pertaining to memory after you have a successful startup sequence A flashing question mark appears on the screen the desktop? Yes: The system software is most likely the problem. - Apple IMAC | User Manual - Page 106
Troubleshooting Symptom Charts/ Can't Wake From Sleep - 2 4 Can't Wake From Sleep Computer cannot be brought out of "sleep" mode by pressing a key on the keyboard. The problem is usually evident by a black screen and a Green or Amber LED. 1 Is the front LED green? Yes: Replace the Analog/Video - Apple IMAC | User Manual - Page 107
these devices one at a time (beginning with the keyboard and then the mouse) and start up the computer after each device is connected to see if one of the external devices is causing the problem. If the problem occurs after you connect a particular external device, replace the device in question - Apple IMAC | User Manual - Page 108
Troubleshooting Symptom Charts/ Networking Problem - 26 7 Replace the logic board. Networking Problem Unable to switch to the Ethernet network option in the control panel or unable to see any network devices. 1 Wrong option selected in the Control Panel. Open the Network control panel and - Apple IMAC | User Manual - Page 109
the CD-ROM drive fails to mount, boot off the system CD that came with the unit. Do you see the CD-ROM drive on the desktop now? Yes: Reinstall system 1 Try using a known-good compact disc. 2 The iMac CD-ROM update v.10 has been posted to Apple SW Updates web page. The CD Firmware Update reduces the - Apple IMAC | User Manual - Page 110
Troubleshooting Symptom Charts/ CD-ROM Door Not Latching Closed - 2 8 CD-ROM Door Not Latching Closed After manually ejecting CDs from the CD-ROM tray (of both /A and /B models), the eject mechanism sometimes does not reset into a position that allows the tray door - Apple IMAC | User Manual - Page 111
Troubleshooting Symptom Charts/ Hard Drive Problems - 29 Hard Drive Problems Hard drive doesn't spin or the hard drive doesn't appear on the desktop. 1 Corrupted drivers. Can you see the hard drive using Drive Setup 1.5.1? Yes: Use Drive Setup 1.5.1 to reinstall the software drivers for the hard - Apple IMAC | User Manual - Page 112
Troubleshooting Symptom Charts/ Sound Out Problems - 3 0 Sound Out Problems No sound coming from the internal speakers, external speakers (connected via the I/O panel to the speaker connector on the logic board), or both. 1 First, disconnect any external microphones, speakers or headphones. Next - Apple IMAC | User Manual - Page 113
Troubleshooting Symptom Charts/ Sound In Problems - 31 Sound In Problems 1 Audio recording quality is poor, a high level of background noise is noticeable, or no sound is recorded. 2 Open the Simple Sound Control Panel (found under the Apple front bezel, around the microphone opening. Refer - Apple IMAC | User Manual - Page 114
angle. 3 Verify infrared signal is being received by host computer. 4 Open the IrDA control panel and make sure "Auto Connect" is selected. 5 Refer to the Basics chapter in this manual for an overview of IrDA compatibility with the iMac computer. 6 Replace IrDA board. 7 Reseat/replace the IrDA cable - Apple IMAC | User Manual - Page 115
Troubleshooting Symptom Charts/ USB Problems - 33 USB Problems USB problems refer to symptoms or issues that may occur with external USB devices that are attached to the iMac. This could include Apple and/or third-party USB devices. 1 Does the unit have the iMac Update 1.0? Ways to tell: - Run - Apple IMAC | User Manual - Page 116
Troubleshooting Symptom Charts/ USB Problems - 34 gives steps to remedy the problem. USB driver missing. This error message indicates the device's driver is missing. Customers will need to check the instructions that came with the device and install the Mac OS driver. 4 Bad USB connector. Connect - Apple IMAC | User Manual - Page 117
assistance in getting the USB mouse replaced. USB Printer Problems iMac cannot print to an attached, knowngood USB printer. 1 Does the unit have the iMac Update 1.0? Ways to tell: - Run Apple System Profiler. In the Device screen, the USB version number in the upper left corner should be greater - Apple IMAC | User Manual - Page 118
Troubleshooting Symptom Charts/ Networked Printer Problems - 36 Note: The iMac Update 1.0 improves the customer experience with many USB peripherals. Apple recommends every iMac customer install this update. The iMac Update 1.0 software is available at no charge through Apple's Software Update Web - Apple IMAC | User Manual - Page 119
Troubleshooting Symptom Charts/ Networked Printer Problems - 37 iMac enablers) and/or the network and printer software. 5 Refer to the "Network Problems" troubleshooting table earlier in this chapter. 6 Replace the logic board. - Apple IMAC | User Manual - Page 120
persists, replace the modem card. No: Install a modem card and try again. No Dial Tone Modem Dialing Problems 1 The phone line is not connected. 2 Is the phone line connected securely to the computer and to the wall jack? Yes: Go to the next step. No: Reconnect the phone line at both ends and - Apple IMAC | User Manual - Page 121
Troubleshooting Symptom Charts/ Modem Dialing Problems - 39 Modem Cannot Dial Out 1 Open the modem control panel and make sure the modem type selected is iMac Internal 56K, (or Apple iMac internal modem in the Earthlink setup screen) the sound is On, and the dialing is set to Tone. At this point, - Apple IMAC | User Manual - Page 122
second line, try that one. The user should contact their local phone company and request their line be checked. Can't Select Features, or Access Sites, or Error Connecting to Online Site 1 Check to make sure the TCP/IP control panel is correctly configured for the user's Internet service provider - Apple IMAC | User Manual - Page 123
Troubleshooting Symptom Charts/ Modem Dropping Connection - 4 1 speed.) If the problem continues, contact the phone company to report the bad phone line. 2 With call waiting active, an incoming call can interrupt the connection. Disable call waiting using AT commands placed in the init string of - Apple IMAC | User Manual - Page 124
Troubleshooting Symptom Charts/ Modem Performance Issues - 4 2 Modem Performance Issues Slow Response 1 When using an ISP, users need to remember that the ISP only has a limited amount - Apple IMAC | User Manual - Page 125
K Service Source Take Apart iMac - Apple IMAC | User Manual - Page 126
Take Apart - 1 General - Apple IMAC | User Manual - Page 127
chapter: • Spring hook removal tool (922-1547) to remove the processor card • Plastic screwdriver (922-3504) to release tabs on plastic housing • Jeweler's Phillips screwdriver, size 00 mm to remove CD-ROM bezel • CRT discharge tool • Nut driver or pliers to remove thumbscrews on the audio - Apple IMAC | User Manual - Page 128
Take Apart Tools - 3 Procedures - Apple IMAC | User Manual - Page 129
Take Apart Lower Access Cover - 4 Lower Access Cover Position the computer face down, resting the CRT on an ESD mat or other soft surface. - Apple IMAC | User Manual - Page 130
Take Apart Lower Access Cover - 5 1. Loosen captive screw on access cover. Note: The captive screw is not included when ordering the lower access cover. To order a captive screw, order part number 922-3630. - Apple IMAC | User Manual - Page 131
Take Apart Lower Access Cover - 6 2. Using the handle, quickly jerk the lower access cover up and towards you. Note: The cover is difficult to remove. An abrupt tug upward is required to remove the cover. - Apple IMAC | User Manual - Page 132
Take Apart Lower Access Cover - 7 Replacing the Lower Access Cover 1. Align the bottom of the lower access cover inside the bottom housing plastics. 2. Align the tabs (one on each side) on the access cover with the holes on the housing. To view a QuickTime movie that shows removing and replacing - Apple IMAC | User Manual - Page 133
Take Apart Logic Board/Mass Storage Chassis - 8 Logic Board/Mass Storage Chassis Before you begin: • Position the computer face down, resting the display on an ESD mat. • Remove the lower access cover. - Apple IMAC | User Manual - Page 134
Take Apart Logic Board/Mass Storage Chassis - 9 1. Remove the two screws at the top of the logic board/mass storage chassis. 2. Disconnect the screw clamp and the audio, RGB, main power, and IrDA cables. - Apple IMAC | User Manual - Page 135
Take Apart Logic Board/Mass Storage Chassis - 1 0 3. Using the handle, pull up on the chassis and slide the logic board/mass storage chassis out of the unit. Replacing the Logic Board/Mass Storage Chassis To view a QuickTime movie of replacing the logic board/ mass storage chassis, click here - Apple IMAC | User Manual - Page 136
begin, remove the following: • Lower access cover • Logic board/mass storage chassis Note: Identify the 6612113 and the 661-2061 logic boards by the graphics controller chip at location U12. The 661-2061 logic board has the ATI Rage IIc chip at U12. The 661-2113 logic board (on the Bondi - Apple IMAC | User Manual - Page 137
chip at U12. The 661-2113 logic board on the 266 MHz Lime, Grape, Blueberry, Strawberry, and Tangerine iMacs will have the ATI Rage Pro Turbo chip at location U12. The 661-2113 board is not backward compatible with iMac Logic board, 6612061. Refer to the Service Parts database for more information. - Apple IMAC | User Manual - Page 138
Take Apart Logic Board - 1 3 1. Disconnect all the cables on the logic board. 2. Remove the five screws that secure the logic board to the chassis. - Apple IMAC | User Manual - Page 139
Take Apart Logic Board - 1 4 3. Remove the two flathead screws that secure the I/O panel to the chassis. 4. Tilt the I/O panel away from the chassis to remove the logic board. Note: The metal tabs on the I/O panel hook into the chassis. These tabs allow the I/O panel to tilt. - Apple IMAC | User Manual - Page 140
gently lift the logic board to disconnect it from the power filter board located underneath. Replacement Note: Before returning the logic board to Apple, remove the heatsink, CPU shields, processor card, modem card, plastic modem standoff, and read the information on the next page about the Ethernet - Apple IMAC | User Manual - Page 141
1 6 Ethernet Hardware ID Label The replacement logic board ships with an Ethernet hardware ID label. You must affix the new label over the existing Ethernet label, which is located above the serial number. Do NOT cover up the serial number information that is printed on the existing Ethernet label. - Apple IMAC | User Manual - Page 142
Take Apart Logic Board - 1 7 Reconnecting Logic Board Cables When reconnecting cables to the logic board, make sure the CD-ROM data cable runs underneath the metal bridge. The remaining cables rest on top of the metal bridge. - Apple IMAC | User Manual - Page 143
Take Apart Processor Card - 1 8 Processor Card Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis - Apple IMAC | User Manual - Page 144
Take Apart Processor Card - 1 9 1. Remove the top shield from the processor card. - Apple IMAC | User Manual - Page 145
Take Apart Processor Card - 2 0 ±Warning: The heatsink may be hot to the touch if the computer has been on for awhile. 2. Pry the heatsink clip off the processor shield frame. - Apple IMAC | User Manual - Page 146
Take Apart Processor Card - 2 1 3. Lift the heatsink off the processor card. - Apple IMAC | User Manual - Page 147
removal tool or carefully with the heatsink clip as shown in the graphic. Note: Remove the heatsink and SDRAM before returning the processor card to Apple. Do NOT remove the rubber gap filler on the microprocessor chip. - Apple IMAC | User Manual - Page 148
Take Apart Modem - 2 3 Modem Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • I/O panel • Logic board Note: A pair of needlenose pliers is required to remove the modem from the modem standoff. - Apple IMAC | User Manual - Page 149
logic board over resting it on an ESD mat. 2. Squeeze the modem standoff with a pair of needlenose pliers to remove the modem from the logic board. Note: If you are replacing If you are returning the logic board to Apple, remove the modem and the standoff. Install them on the replacement logic board. - Apple IMAC | User Manual - Page 150
Take Apart I/O Panel - 25 I/O Panel Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis - Apple IMAC | User Manual - Page 151
Take Apart I/O Panel - 26 1. Remove the two screws that secure the I/O panel to the chassis. - Apple IMAC | User Manual - Page 152
Take Apart I/O Panel - 27 2. Tilt the I/O panel outward and unhook the I/O panel tabs from the chassis. - Apple IMAC | User Manual - Page 153
Take Apart SDRAM - 2 8 SDRAM Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Processor top shield • Processor card Note: There are two expansion slots (one on top and one underneath) for RAM modules on the processor card. This picture shows the RAM - Apple IMAC | User Manual - Page 154
Take Apart SDRAM - 2 9 1. Pull the metal snaps on either side of the RAM DIMM to the sides. The connector will tilt up. 2. Pull the RAM DIMM out. Note: Remove installed SDRAM from the processor card before returning the processor card to Apple. - Apple IMAC | User Manual - Page 155
Take Apart Processor Shield Frame - 3 0 Processor Shield Frame Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Processor top shield • Processor card - Apple IMAC | User Manual - Page 156
tabs. Note: Remove the processor shield frame, the processor top shield, the processor card, the modem, and modem standoff before returning the logic board to Apple. - Apple IMAC | User Manual - Page 157
the following: • Lower access cover • Logic board/mass storage chassis Important: Apple recently (7/99) released a new 24x CD-ROM drive service part for five-color iMacs with 266MHz processors or faster only. Please note that this new 24x CD-ROM, called the Version 2, is not compatible with the 24x - Apple IMAC | User Manual - Page 158
Blue iMacs. Although the two iMac CDROM drives are identical in fit and performance, the drives are not interchangeable. The 24x CD-ROM, Version 2, may cause data loss if used in the 233MHz Bondi Blue iMac. To ensure proper compatibility, please order the correct CD-ROM drive when servicing an iMac. - Apple IMAC | User Manual - Page 159
Take Apart CD-ROM - 3 4 CD-ROM Part Numbers • If you are replacing a 24x CD-ROM drive in a Bondi Blue iMac (233MHz), order the 661-2076 CDROM drive. • If you are replacing a 24x CD-ROM drive in a fivecolor iMac (266MHz or greater), order 6612207, CD-ROM drive, 24x, Ver. 2. - Apple IMAC | User Manual - Page 160
. 3. Disconnect the CD-ROM data cable and lift the CD-ROM from the chassis. Note: The CD-ROM drive, carrier, and interconnect board are one service part. The bezel is a separate - Apple IMAC | User Manual - Page 161
Take Apart CD-ROM - 3 6 Replacing the CD-ROM Carrier 1. The spring catch on the back of the CD carrier has to hook on to the spring that rests on top of the hard drive. Review the hard drive take-apart procedure in this chapter to see a photograph of the spring. - Apple IMAC | User Manual - Page 162
Take Apart CD-ROM - 3 7 2. Ensure the metal tabs on the CD carrier feed into the tab holes on the chassis to secure the CD-ROM drive in place. - Apple IMAC | User Manual - Page 163
steps are required before you begin this procedure. Note: The CD-ROM bezel is a separate service part because the bezels come in different colors. If replacing the CD-ROM, remove the bezel and place the bezel on the new CD-ROM assembly. Refer to the Service Parts Database for more information. - Apple IMAC | User Manual - Page 164
Take Apart CD-ROM - 3 9 1. Open the CD-ROM drive drawer by gently pushing a paper clip into the access hole. - Apple IMAC | User Manual - Page 165
-ROM - 4 0 2. Rest the iMac on its side. 3. Pull the CD-ROM drawer out to access the micro screw on the underside of the CD-ROM drive. 4. Remove the micro screw. Note: There are three tabs that hold the CD bezel in place (you can't see them in this photo). Refer to the - Apple IMAC | User Manual - Page 166
Take Apart CD-ROM - 4 1 5. Press the three tabs and gently remove the bezel from the CD-ROM mechanism. - Apple IMAC | User Manual - Page 167
Take Apart Hard Drive - 42 Hard Drive Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis - Apple IMAC | User Manual - Page 168
the hard drive carrier to the chassis. The CD-ROM doesn't have to be removed completely to access the hard drive, as shown in the photo. Replacement Note: Notice the spring resting on top of the hard drive. The CD-ROM carrier attaches to the spring, making the CD-ROM spring - Apple IMAC | User Manual - Page 169
on to the hard drive carrier, push the carrier back to free the carrier from the chassis. Note: Pushing the carrier back releases two metal tabs on the underside of the hard drive carrier. Refer to "Hard Drive Carrier Replacement" for photo and information. 3. Lift the hard drive carrier from the - Apple IMAC | User Manual - Page 170
cable, power cable, and four screws securing the HDA to the carrier. 5. Return drives without cables or carriers. Exchange hard drive modules in Apple packaging. Failure to comply with this requirement may result in a packaging noncompliance charge. Refer to the parts database for more information. - Apple IMAC | User Manual - Page 171
Take Apart Hard Drive - 46 Replacing the Hard Drive Carrier 1. Route the hard drive and CD-ROM cables under the metal support bridge on the chassis. 2. Slide the hard drive carrier tab (one tab on each side) into the chassis tab slot. 3. Pull the hard drive/ carrier - Apple IMAC | User Manual - Page 172
Take Apart Power Filter Board - 47 Power Filter Board Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis - Apple IMAC | User Manual - Page 173
Take Apart Power Filter Board - 48 1. Remove the two screws on the power filter board. 2. Lift the power filter board off the chassis. Note: If the logic board is still in place, you may feel resistance when prying the power filter board off the logic board connector. - Apple IMAC | User Manual - Page 174
Take Apart Fan - 4 9 Fan Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis ±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, discharge the CRT and review CRT safety in Bulletins/Safety. - Apple IMAC | User Manual - Page 175
Take Apart Fan - 5 0 1. Remove the two screws from the fan bracket. - Apple IMAC | User Manual - Page 176
may be tie-wrapped to the chassis. 3. Remove the fan from unit. Replacement Note: Due to space constraints, the analog board will have to be removed to reconnect the fan at P508 (on the analog board). Also, install the fan so that the cable rests in the cut-out notch on the chassis - Apple IMAC | User Manual - Page 177
Take Apart Audio/Video Interconnect Board - 5 2 Audio/Video Interconnect Board Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Logic board • I/O panel • CD-ROM • Hard Drive - Apple IMAC | User Manual - Page 178
interconnect board. Note: There are two versions of the audio/video interconnect board; 9223589 (with an IrDA connector) and 922-3741 (without an IrDA connector). The /A and /B iMacs use the 992-3589, with IrDA. The five-colored iMacs do not use the IrDA technology. These sytems use the 922-3741 - Apple IMAC | User Manual - Page 179
Take Apart Audio/Video Interconnect Board - 5 4 2. Remove the two thumbscrews (with a nut driver) and the one phillips screw from the outside of the board. Replacement Note: Ensure that the audio/ video interconnect board ports and tabs are positioned correctly into the chassis holes. - Apple IMAC | User Manual - Page 180
Take Apart Audio/Video Interconnect Board - 5 5 3. Disconnect the cables on the audio/video interconnect board. 4. Pull the board up and out of the chassis. Note: Remove all cables before returning the board to Apple. - Apple IMAC | User Manual - Page 181
begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Front lower panel Note: The bottom rear housing includes the flip foot. The computer should never be picked up by the flip foot. If needed, the flip foot is also available separately. Refer to the parts database. - Apple IMAC | User Manual - Page 182
Take Apart Bottom Rear Housing - 5 7 1. Remove the eight screws. Note: Four screws are fine-threaded screws that screw into metal; the four other screws are coarse-threaded screws that screw into plastic. One screw is located inside the I/O panel door. - Apple IMAC | User Manual - Page 183
Take Apart Bottom Rear Housing - 5 8 2. Press down on the tab and pull the bottom housing off the computer. - Apple IMAC | User Manual - Page 184
Take Apart Front Lower Panel - 59 Front Lower Panel Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis - Apple IMAC | User Manual - Page 185
Take Apart Front Lower Panel - 60 1. Remove the eight screws on the bottom housing. Note: Four screws are fine-threaded screws that screw into metal; the four other screws are coarse-threaded screws that screw into plastic. One screw is located inside the I/O panel door. - Apple IMAC | User Manual - Page 186
Take Apart Front Lower Panel - 61 2. Press down on the tab at the top of the housing and pull the bottom housing toward you. Note: Be careful with the tabs; see the next step. - Apple IMAC | User Manual - Page 187
Take Apart Front Lower Panel - 62 3. Position the iMac on its side and gently release the front lower panel tabs from the tab slots. To remove the front lower panel from the bottom housing, continue with the procedures. - Apple IMAC | User Manual - Page 188
Take Apart Front Lower Panel - 63 4. Push in on the front lower panel tabs to remove the front lower panel from the bottom housing. - Apple IMAC | User Manual - Page 189
Take Apart Speakers - 6 4 Speakers Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Bottom rear housing - Apple IMAC | User Manual - Page 190
Take Apart Speakers - 6 5 1. Remove the speaker screw. 2. Disconnect the speaker cable. - Apple IMAC | User Manual - Page 191
Take Apart Speakers - 6 6 3. Lift speaker up and out of the chassis frame. Note: The speakers are keyed left and right. Replacement Note: Make sure the speaker cable is repositioned through the chassis hole if you removed or replaced internal chassis cables, the internal CRT chassis frame, or - Apple IMAC | User Manual - Page 192
Take Apart IrDA Board - 67 IrDA Board Before you begin, remove the following: • Lower access cover • Logic board/mass storage chassis • Bottom rear housing - Apple IMAC | User Manual - Page 193
Take Apart IrDA Board - 68 1. Remove the screw on the IrDA bracket; remove the bracket. 2. Remove IrDA cable from the IrDA board. 3. Remove the screw attaching the IrDA board to the chassis. 4. Lift the IrDA board up and out of the inner bezel. - Apple IMAC | User Manual - Page 194
Take Apart Headphone/Power Board - 6 9 Headphone/Power Board Before you begin remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom rear housing • Front lower panel - Apple IMAC | User Manual - Page 195
Take Apart Headphone/Power Board - 7 0 1. Disconnect the two cables (three-wire LED cable and multi-colored audio cable) from the headphone/power board. 2. Remove the two screws. 3. Lift the headphone/ power board from chassis frame. Note: You may have to wiggle the board a bit and assist from - Apple IMAC | User Manual - Page 196
Take Apart Front Outer Bezel - 71 Front Outer Bezel Before you begin, remove the front lower panel (which is attached to the bottom housing). - Apple IMAC | User Manual - Page 197
Take Apart Front Outer Bezel - 72 1. Remove two screws on the front outer bezel. - Apple IMAC | User Manual - Page 198
Take Apart Front Outer Bezel - 73 2. With the CRT facing you, use a plastic tool to push in the tabs on the left side and then on the right side to release the tabs from the bezel holes. Start pushing the tabs in from the bottom left corner and work your way to the top. Note: Be careful not to - Apple IMAC | User Manual - Page 199
following: • Lower access cover • Main logic/mass storage chassis • Bottom rear housing • Front lower panel • Front outer bezel • Top rear housing • CRT EMI shield • Analog/video board • Power supply - Apple IMAC | User Manual - Page 200
Take Apart Front Inner Bezel - 75 ±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. 1. Remove the eight screws attaching the inner CRT bezel frame to the inner plastic bezel. There are four screws on - Apple IMAC | User Manual - Page 201
Take Apart Front Inner Bezel - 76 3. Lift the CRT bezel frame away from the inner bezel. - Apple IMAC | User Manual - Page 202
Take Apart Front Inner Bezel - 77 4. Lift the CRT off the front inner bezel. 5. The inner bezel and microphone remain. Remove the microphone from the front inner bezel. - Apple IMAC | User Manual - Page 203
Take Apart Top Rear Housing - 7 8 Top Rear Housing Before you begin, remove the following: • Front lower panel • Front outer bezel • Lower access cover - Apple IMAC | User Manual - Page 204
Take Apart Top Rear Housing - 7 9 1. Remove the the eight bottom housing screws. - Apple IMAC | User Manual - Page 205
Take Apart Top Rear Housing - 8 0 2. Press down on the tab and pull the bottom housing off the computer. - Apple IMAC | User Manual - Page 206
Take Apart Top Rear Housing - 8 1 3. With a jeweler's screwdriver, pry off the two screw plugs on the top housing. Note: The screw plugs are keyed right and left. 4. Remove the two silver screws under the screw plugs. - Apple IMAC | User Manual - Page 207
Take Apart Top Rear Housing - 8 2 5. Note: There are tab holes on both sides of the front inner bezel To remove the top rear housing, hold the housing near the bottom and pull the housing up to unhook the tabs from the tab holes (start on one side). Then, pull the sides out and back to release the - Apple IMAC | User Manual - Page 208
Take Apart Top Rear Housing - 8 3 6. Lift the top rear housing off the computer. - Apple IMAC | User Manual - Page 209
Take Apart EMI Shield - 8 4 EMI Shield ±Warning: This product contains high voltage and a high-vacuum picture tub. Review CRT safety in Bulletins/Safety. Before you begin, discharge the CRT and remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom rear - Apple IMAC | User Manual - Page 210
Take Apart EMI Shield - 8 5 1. Remove the ten screws on the EMI shield. 2. Pull out and up on the EMI shield to remove it from the chassis. Replacement Note: Position the tabs on the top of the the EMI shield first, then line up the remaining screws holes. - Apple IMAC | User Manual - Page 211
: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, discharge the CRT. Note: There are two versions of the analog/video board. Identify which version you have before replacing a module. Exchange like-for-like. Refer to the Service Parts Database and the - Apple IMAC | User Manual - Page 212
Take Apart Analog/Video Board - 8 7 Ver. 2 board is not backwards compatible and must be used with the other Ver. 2 service parts. - Apple IMAC | User Manual - Page 213
Board - 8 8 Note: The procedures for removing the two versions of the analog/video board are very similar. The following procedures are for the 6612080 analog/video board. Before you begin, discharge the CRT and remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom - Apple IMAC | User Manual - Page 214
Take Apart Analog/Video Board - 8 9 1. Gently pull the video board off the CRT neck. 2. Disconnect P301, P306, and the black ground wire on the video board. Note: Leave P302, P303, and the red wires connected to the video board. 3. Carefully pull the video board straight off the neck of the CRT. - Apple IMAC | User Manual - Page 215
careful not to bump the factory-set magnets located on the neck of the CRT. Changing these settings may adversely affect the quality of the video and require you to replace the CRT. - Apple IMAC | User Manual - Page 216
Take Apart Analog/Video Board - 9 1 5. Disconnect P702, P505, P514, and P508 and a 4-pin multi-color CRT cable (not shown). Don't disconnect P506 and P502, the two gray cables. Replacement Note: P506 and P502 (gray cables shown) should be returned with the board if the board is faulty. - Apple IMAC | User Manual - Page 217
contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety Note: There are two versions of the analog/video board. Identify which version you have before replacing a module. Exchange like-for-like. Refer to the Service Parts Database - Apple IMAC | User Manual - Page 218
Take Apart Analog/Video Board, Ver. 2 - 9 3 diagrams for the analog/ video and power supply boards located in the Exploded View chapter. The Ver. 2 board is not backwards compatible and must be used with the other Ver. 2 service parts. - Apple IMAC | User Manual - Page 219
, Ver. 2 - 9 4 The following procedure is for the 661-2166 Ver. 2 analog/video board. Before you begin, discharge the CRT and remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom rear housing • Front lower panel • - Apple IMAC | User Manual - Page 220
Board, Ver. 2 - 9 5 1. Gently pull the video board off the CRT neck. 2. Disconnect P301, P305, and the black ground wire on the video board. Note: Leave P 3 0 2 ( the red wire) and P303 (the gray cable) connected to the video board. 3. Carefully pull the video board straight off the neck of the CRT. - Apple IMAC | User Manual - Page 221
careful not to bump the factory-set magnets located on the neck of the CRT. Changing these settings may adversely affect the quality of the video and require you to replace the CRT. - Apple IMAC | User Manual - Page 222
out and disconnect six cables; P702, P504, P514, P703, P506, and P701. Replacement Note: This board should have two cables on it when returned to Apple: the red permanent cable that connects the analog and video board, and the gray cable that goes from P303 on the - Apple IMAC | User Manual - Page 223
a high-vacuum picture tube. To prevent serious injury, discharge the CRT. Note: There are two versions of the power supply board. Identify which version you have before replacing a module. Exchange like-for-like. Refer to the Service Parts Database and the wiring diagrams for the analog/ video and - Apple IMAC | User Manual - Page 224
Take Apart Power Supply Board - 99 boards located in the Exploded View chapter. The Rev.2 power supply board is not backwards compatible and must be used with the other Ver. 2 service parts. - Apple IMAC | User Manual - Page 225
Take Apart Power Supply Board - 100 Before you begin, discharge the CRT and remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom rear housing • Front lower panel • Front outer bezel • Rear top housing • EMI shield - Apple IMAC | User Manual - Page 226
. Note: There are two versions of the power supply board, 6612081 (shown here) and 661-2167, Ver. 2. They must be exchanged likefor-like. Refer to the Service Parts database or the Exploded View, wiring diagram for the Rev.2 analog/video and Rev.2 Power Supply boards, for additional information. - Apple IMAC | User Manual - Page 227
Take Apart Power Supply Board - 102 Note: The power supply has a ground clip connected near the AC plug (not shown here). When replacing the power supply, remove the ground clip from the defective board and place it on the new service part. The ground clip does not ship with the new service part. - Apple IMAC | User Manual - Page 228
Take Apart Power Supply Board - 103 2. Disconnect three cables on the board; P902 (brown cable), the multi-colored power cable, and P908, the gray cable. 3. Lift the board off the chassis. Note: There is a fuse on the AC line on the power supply board. The fuse is located at F901 (near the bottom - Apple IMAC | User Manual - Page 229
Take Apart Power Supply Board - 104 replacing the power supply board, test the fuse. Refer to the "Testing for Power" in the iMac Troubleshooting chapter for instructions on how to check the power supply board fuse. This fuse is an orderable service part and can be replaced by service providers. - Apple IMAC | User Manual - Page 230
product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review CRT safety in Bulletins/Safety. Note: There are two versions of the power supply board. Identify which version you have before replacing a module and exchange them like-forlike. Refer to the Service Parts - Apple IMAC | User Manual - Page 231
Take Apart Power Supply Board, Ver. 2 - 106 diagrams for the Ver. 2 analog/ video and power supply boards located in the Exploded View Chapter. The Rev.2 power supply board is not backwards compatible and must be used with the other Ver. 2 service parts. - Apple IMAC | User Manual - Page 232
Take Apart Power Supply Board, Ver. 2 - 107 Before you begin, discharge the CRT and remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom rear housing • Front lower panel • Front outer bezel • Rear top housing • EMI shield - Apple IMAC | User Manual - Page 233
the power supply board. Note: There are two versions of the power supply board, 6612081 and 661-2167, Ver. 2. They must be exchanged like-for-like. Refer to the Service Parts database or the wiring diagram for the Rev.2 Analog/Video and Rev.2 power supply boards located in the Exploded View chapter. - Apple IMAC | User Manual - Page 234
Board, Ver. 2 - 109 2. Disconnect P904, P906, and P902. Connector CN1 (is hard wired to power supply) and P907 stay connected to the power supply. Note: There is a ground clip connected near the AC plug (not shown here). If replacing the power supply, remove the ground clip from the defective board - Apple IMAC | User Manual - Page 235
are facing the back side of the board). Before replacing the power supply board, test the fuse. Refer to the "Testing for Power" in the iMac Troubleshooting chapter for instructions on how to check the power supply board fuse. This - Apple IMAC | User Manual - Page 236
Take Apart Power Supply Board, Ver. 2 - 111 fuse is an orderable service part and can be replaced by service providers. - Apple IMAC | User Manual - Page 237
Take Apart CRT - 1 1 2 CRT ±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, discharge the CRT. Before you begin, remove the following: • Lower access cover • Main logic/mass storage chassis • Bottom - Apple IMAC | User Manual - Page 238
Take Apart CRT - 1 1 3 Note: There is a Ver. 2 CRT. Refer to the Service Parts database for additional information. The Ver. 2 CRT is not backwards compatible. - Apple IMAC | User Manual - Page 239
Remove the eight screws attaching the CRT frame to the inner plastic bezel. There are four screws on each side. Note: This graphic shows the computer without an analog/video board attached. The CRT can be removed without removing the analog and power supply boards, see "Shortcut" on the next page. - Apple IMAC | User Manual - Page 240
Take Apart CRT - 1 1 5 2. Lift the CRT bezel frame off the CRT. Shortcut: With the analog and power supply boards in place, remove the video board off the CRT neck. Disconnect P701 (large 4-pin connector on the analog board), P702 (3-pin cable in the upper left corner of the analog - Apple IMAC | User Manual - Page 241
careful not to bump the factory-set magnets located on the neck of the CRT. Changing these settings may adversely affect the quality of the video and require you to replace the CRT. - Apple IMAC | User Manual - Page 242
you begin, remove the following: • Front lower panel • Front outer bezel • Lower access cover • Bottom rear housing • Top rear housing ±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, discharge the CRT and review CRT safety in Bulletins/Safety. - Apple IMAC | User Manual - Page 243
access the microphone. 3. With needlenose pliers, gently pull the microphone out of the rubber enclosure. Note: The microphone does not ship with the rubber enclosure around the microphone. - Apple IMAC | User Manual - Page 244
can be tricky to remove. Don't hesitate to pull hard on the I/O door to unhook the tab latches. Note: There are two versions of the iMac I/O door. Refer to the Service Parts database for more information. - Apple IMAC | User Manual - Page 245
Door - 120 Serial Number and Ethernet Address The serial number and Ethernet hardware address are located on the inside panel of the I/O door. Replacement logic boards ship with an Ethernet label. If you replace the logic board, you must affix the new label over the existing Ethernet label (located - Apple IMAC | User Manual - Page 246
frame and the CRT bezel frame (top piece). All the cables shown are offered separately except for the degaussing cable, which is not offered as a service part. Note: There are two versions of the CRT bottom frame: 922-3627 and 922-3837, Ver. 2. They are not interchangeable. - Apple IMAC | User Manual - Page 247
: • Lower access cover • Main logic board/mass storage chassis • Bottom rear housing • Front lower panel • Front outer bezel • Top rear housing • CRT EMI shield • Analog/video board • Power supply board • CRT • Speakers • Headphone/power board • IrDA board - Apple IMAC | User Manual - Page 248
Take Apart CRT Frame - 1 2 3 1. Remove the four brasscolored screws to separate the top frame from the bottom frame.R Note: Take note of the cable routing before removing/replacing any cables. - Apple IMAC | User Manual - Page 249
Take Apart CRT Frame - 1 2 4 2. Pull the tabs out of the catches on the CRT frame. 3. Lift the top frame up and off the bottom frame. - Apple IMAC | User Manual - Page 250
Take Apart CRT Frame - 1 2 5 4. The remaining frame is the CRT bottom frame. It ships without the cables and rubber plugs. Note: The cables and rubber plugs are offered separately. - Apple IMAC | User Manual - Page 251
Installing a Microphone Gasket Installing the microphone gasket (922-3679) will improve audio recording quality from the internal microphone on some early production iMac computers. Refer to TIL article #58053 for additional information. Remove the following: • Front lower panel • Front outer bezel - Apple IMAC | User Manual - Page 252
Take Apart Installing a Microphone Gasket - 127 1. Place the gasket around the microphone opening in a vertical orientation. Ensure that the microphone opening is not obstructed by the gasket. - Apple IMAC | User Manual - Page 253
Take Apart Installing a Microphone Gasket - 128 2. Replace the front outer bezel, taking care not to dislodge the gasket. - Apple IMAC | User Manual - Page 254
Take Apart Installing a Microphone Gasket - 129 3. Replace the two front bezel screws. - Apple IMAC | User Manual - Page 255
K Service Source Upgrades iMac - Apple IMAC | User Manual - Page 256
Upgrades - 1 SDRAM Before you begin, position the iMac face down on an ESD mat. 1. Remove the lower access cover. - Apple IMAC | User Manual - Page 257
Upgrades - 2 2. Remove the two screws at the top of the logic board/mass storage chassis and disconnect the cables and screw clamp. - Apple IMAC | User Manual - Page 258
Upgrades - 3 3. Using the handle, pull the main logic board/ mass storage chassis from the unit. - Apple IMAC | User Manual - Page 259
Upgrades - 4 4. Place the logic board/mass storage unit on an ESD mat. - Apple IMAC | User Manual - Page 260
Upgrades - 5 5. Remove the processor card top shield. - Apple IMAC | User Manual - Page 261
Upgrades RAM Expansion Slot Tab Metal Tab - 6 Notch Metal Tab SDRAM 6. Line up the notch in the SDRAM DIMM with the small plastic tab in the SDRAM slot. Push in on the card and then down until the two metal snaps click into place.L Note: There are two expansion slots for RAM DIMM modules on the - Apple IMAC | User Manual - Page 262
Upgrades - 7 VRAM Before you begin, position the iMac face down on an ESD mat. 7. Remove the lower access cover. - Apple IMAC | User Manual - Page 263
Upgrades - 8 8. Remove the two screws at the top of the logic board/mass storage chassis and disconnect the cables and screw clamp. - Apple IMAC | User Manual - Page 264
Upgrades - 9 9. Using the handle, pull the main logic board/ mass storage chassis from the unit. - Apple IMAC | User Manual - Page 265
Upgrades - 10 10. Place the logic board/ mass storage chassis on an ESD mat. - Apple IMAC | User Manual - Page 266
Upgrades Notch Tab VRAM Expansion Slot VRAM Metal Tab - 11 11. Line up the notch in the SGRAM DIMM expansion card with the small plastic tab in the VRAM expansion slot. Push in on the VRAM card, and then down, until the two metal snaps click into place. - Apple IMAC | User Manual - Page 267
K Service Source Adjustments iMac - Apple IMAC | User Manual - Page 268
Tools The following items are needed to perform video adjustments on the iMac: • Display Adjustment Utility • a light meter The utility can be found on the Service Source CD or under the Diagnostic link found on the Troubleshooting and Repair page online at: http:// service.info.apple.com. - Apple IMAC | User Manual - Page 269
Adjustments Adjustment Tools - 2 Light Meter Setup This topic covers setup for three light meter models: R77, L-248, and 246. Model R77 (Apple part number 076-0310) is the newest model available. Model R77 The R77 light meter is capable of reading luminance from 10 to 1,000 footcandles ( - Apple IMAC | User Manual - Page 270
Adjustments Adjustment Tools - 3 Three scales are shown on the light meter: • 200-1000 fc • 50-250 fc • 10-50 fcT Because display screen luminance typically ranges from 10 to 50 fc, take readings from the bottom scale only. - Apple IMAC | User Manual - Page 271
, 1. Set the scale switch to the bottom position (to set up the 10-50 fc scale). 2. Place the lens against the middle of the screen and read the bottom scale. Note: When the light meter is not in use, slide the scale switch to its top position, and store the - Apple IMAC | User Manual - Page 272
Adjustments Adjustment Tools - 5 Important: If you suspect the light meter is giving false readings, verify the readings with a known-good light meter or photometer. Also check the age of the R77 light meter by its four-digit manufacturing date stamp (such as 0398 for March 1998). Caution: Dropping - Apple IMAC | User Manual - Page 273
its upper position so that the scale reads 10 through 18. 3. Uncover the lens of the meter. 4. Place the lens against the middle of the screen and press the read button to read the scale. - Apple IMAC | User Manual - Page 274
lens with the red dot. 3. Swivel the head so the lens of the meter faces the monitor. 4. Place the lens against the middle of the screen and read the scale. - Apple IMAC | User Manual - Page 275
Adjustments Geometry - 8 Geometry The Geometry adjustments shown are controlled via the Display Adjustment Utility. 5. Open the Display Adjustment Utility and select the Geometry window. 6. Adjust the geometry settings by moving the appropriate slider bar. 7. When done, save your adjustments. - Apple IMAC | User Manual - Page 276
the "Save" button and repeat the sequence for the next resolution. If you do not save the adjustments from one resolution before switching to a new resolution, a dialog box will appear asking if "saving" is desired before switching resolutions. If "yes" is selected, adjustments will be saved and the - Apple IMAC | User Manual - Page 277
Adjustments Video - 1 0 Video Use the Display Adjustment Utility to perform the Cutoff and White Balance adjustments. Perform the cutoff and white balance adjustments whenever you replace the CRT or the analog /video board. - Apple IMAC | User Manual - Page 278
Adjustments Cutoff - 11 Cutoff Perform the cutoff adjustment prior to adjusting the white balance. Make sure the monitor has been on for at least 10 minutes. 1. Using the Monitors Control Panel, set the contrast to maximum and brightness to midrange. - Apple IMAC | User Manual - Page 279
Adjustments Cutoff - 12 2. Open the Display Adjustment Utility, and select the 640 x 480 resolution from the Resolution Menu. - Apple IMAC | User Manual - Page 280
Adjustments Cutoff - 13 3. Select the Color tab window and move the Sub Contrast and Sub Brightness controls to midrange. - Apple IMAC | User Manual - Page 281
Adjustments Cutoff - 14 4. Set the drive and cutoff controls to their midpoint positions. Note: You will need to switch back and forth between the Gray Bars test pattern (under the Pattern menu) and the Color adjustment window. - Apple IMAC | User Manual - Page 282
the Pattern menu. Note: This procedure should be performed in a dimly lit room. Important: If any color adjustments are turned down too far, and the screen goes completely dark, press the Command-R keystroke combination to revert the color adjustment to the last saved setting. - Apple IMAC | User Manual - Page 283
Adjustments Cutoff - 16 6. Look at the Gray Bar Test pattern. • The bars should have no predominant color. • The leftmost bar should be as black as the screen border. • The second bar (from the left) should be barely visible. • The third bar should be dark gray. - Apple IMAC | User Manual - Page 284
Adjustments Cutoff - 17 7. Adjust the red, green, and blue cutoff controls until the second bar (from the left) is barely visible. - Apple IMAC | User Manual - Page 285
Adjustments Cutoff - 18 8. Check the Gray Bar test pattern. If there is a predominant color in the three gray bars (on the left), adjust the color accordingly until there is no predominant color. - Apple IMAC | User Manual - Page 286
Adjustments Cutoff - 19 9. The cutoff is now set correctly. You should see shades of black and gray and the second bar (from the left) is barely visible. 10. Click the Save button in the Color window to save your settings. 11. Proceed to the White Balance adjustment. - Apple IMAC | User Manual - Page 287
Adjustments Cutoff - 20 White Balance Make sure the cutoff is set correctly before you proceed and that the monitor has been on for at least 10 minutes. 1. Open the Display Adjustment Utility and select the Gray Bars test pattern from the Pattern menu. - Apple IMAC | User Manual - Page 288
Adjustments Cutoff - 21 2. Hold a light meter on the white bar (last bar on the right). Adjust the red, green, and blue drive controls until the light meter reads one of the following: • 18 foot candles on light meter R77. • 18 foot candles on light meter L246. • Middle of 9 - Apple IMAC | User Manual - Page 289
Adjustments Cutoff - 22 Important: If a predominant color is displayed in the three left gray bars, adjust the cutoff controls until you see no predominant color. Recheck the white bar until you get one of the meter readings mentioned on the previous page. Adjust the - Apple IMAC | User Manual - Page 290
Adjustments Cutoff - 23 3. Select White from the Pattern menu. 4. Hold a light meter or photometer against the center of the screen. The screen luminance reading should be one of the following: • 21 (foot candles) on light meter Model R77 • Upper end of 10 on the 10 through 18 scale of light meter - Apple IMAC | User Manual - Page 291
Adjustments Cutoff - 24 5. Adjust the Sub Contrast slider to increase the screen brightness until the luminance measures correctly. Important: The Display Adjustment Utility requires that your system be restarted in order for Color, Sub Contrast, or Sub - Apple IMAC | User Manual - Page 292
Adjustments Focus Focus - 2 5 Focus ±Warning: This product contains high voltage and a high-vacuum picture tube. To prevent serious injury, review the Saftey information on Service Source. Before you begin, remove the following: • Lower access cover • Bottom rear housing • Front lower panel • - Apple IMAC | User Manual - Page 293
Adjustments Focus - 2 6 1. Power on the computer. 2. Open the Display Adjustment Utility and select Focus from the Pattern menu to display the focus test pattern. - Apple IMAC | User Manual - Page 294
Adjustments Focus Cutoff - 27 3. Using a flat-head plastic adjustment tool, adjust the focus control on the flyback transformer until the focus test pattern reaches the best center-of-screen performance. 4. Replace the covers and panels and return the computer to the customer. - Apple IMAC | User Manual - Page 295
K Service Source Exploded View iMac - Apple IMAC | User Manual - Page 296
922-3566 Fan 922-3841, Rev 2 w/o Bracket Bottom CRT Frame 922-3837, Rev 2 922-3627 LED Cable 922-3623 Audio Cable 922-3624 922-3836, Rev 2 See Logic Board/ Mass Storage Chassis Exploded View Bottom Rear Housing 922-3578 USB Keyboard 922-3559 USB Mouse 922-3560 Foot with I/O Door Clips Kit 922 - Apple IMAC | User Manual - Page 297
Bezel, CD (refer to Colored Service Parts Matrix Exploded View) CD-ROM Kit 076-0753 SDRAM, 4MB 661-2023 Product ID Label Heatsink Kit Controller (ref. only) Modem 661-2085 Modem Standoff 922-3620 IrDA Cable 922-3592 Audio Cable 922-3590 Video Cable 922-3591 Screwlocks 922-3617 Audio/Video - Apple IMAC | User Manual - Page 298
Colored Service 922-3776Blueberry 922-3796 Grape 922-3798 Lime 922-3795Strawberry 922-3797Tangerine Keyboard, USB 922-3559 Bondi Blue 922-3728 Blueberry 922-3800 Grape 922 Bottom Rear Housing 922-3578 Bondi Blue 922-3775 Blueberry Foot Kit with Clips 076-0770 Blueberry 076-0743 Bondi Blue 076-0772 - Apple IMAC | User Manual - Page 299
Exploded View 5 iMac Screw Matrix Lower Access Cover (1) Imac Screw Matrix Can Assy to CRT Chassis w/lock washer (2) Logic Board w/washer (5) I/O Panel (2) HDA/ CD- Housing (Brass colored) (4) Bottom Housing (4) Speaker (1)ea ,Fan (2) CRT to CRT Chassis (4) Front outer Bezel (2) Headphone - Apple IMAC | User Manual - Page 300
661-2080 and Power Supply 661-2081 Use this wiring diagram to verify cable connections and to identify visible differences from the Ver. 2 analog/video and power supply boards. The Ver. 2 wiring diagram is shown on the next page.˙ R-Speaker P1 P2 P920 P918 P919 P917 Mic P908 P502 P514 - Apple IMAC | User Manual - Page 301
previous page shows the cable connections of the original analog/video and power supply boards. R-Speaker P1 P2 To MLB Mic P904 P907 P906 P504 P514 P703 L-Speaker Flyback P702 Transformer CN1 P915 P506 P902 AC Socket Power Supply Board Ver.2 (661-2167) Fan - Apple IMAC | User Manual - Page 302
K Service Source Additional Procedures iMac - Apple IMAC | User Manual - Page 303
ejecting CDs from the iMac CD-ROM tray (of both /A and /B models), the eject mechanism sometimes does not reset into a position that allows the tray door to close properly. Instead of replacing the CD-ROM assembly, the eject mechanism can be manually reset with a paperclip to correct the problem. - Apple IMAC | User Manual - Page 304
Additional Procedures - 2 1. Position the iMac on its side. 2. Insert a paperclip into the manual eject hole on the front of the CD-ROM tray door to open the tray. Note: The manual eject mechanism is accessed from the underside of the CD-ROM drive. - Apple IMAC | User Manual - Page 305
eject mechanism forward until you hear a click. 4. Close the CD-ROM tray. If the tray doesn't latch, check that the eject mechanism is clear and free of plastic parts. If it still doesn't latch, the CD-ROM drive should be replaced. - Apple IMAC | User Manual - Page 306
Emergency Handbook Includes troubleshooting, hard disk repair, and software installation information for your iMac - Apple IMAC | User Manual - Page 307
. The Apple logo is a trademark of Apple Computer, Inc., registered in the U.S. and other countries. Use of the "keyboard" Apple logo ( First Aid, Extensions Manager, Finder, Foreign File Access, and Macintosh PC Exchange are trademarks of Apple Computer, Inc. ENERGY STAR is a U.S. registered - Apple IMAC | User Manual - Page 308
down. 13 Quit open applications. 13 Make sure your computer is getting power. 13 Make sure the screen is properly adjusted. 13 Make sure external devices are properly connected and turned on. 14 Check RAM disk settings in the Memory control panel. 15 Increase the memory available for system software - Apple IMAC | User Manual - Page 309
Drives and Discs 30 Problems Using ISO 9660 or High Sierra Discs 32 Problems Using Photo CDs 33 Problems Playing Audio CDs 33 Problems With USB Devices 33 Problems Printing 35 Performance and Other Problems 36 Problems With Networks and File Sharing 39 Problems With Sound and Video 41 3 Starting Up - Apple IMAC | User Manual - Page 310
Extensions, Fonts, and Control Panels 59 If the Clean Installation Didn't Solve the Problem 60 Problems During Installation 60 Responding 6 Contacting Apple for Help 65 Obtaining Information via the World Wide Web 65 Have This Information Available Before Calling 66 Using the Apple System Profiler 66 - Apple IMAC | User Manual - Page 311
- Apple IMAC | User Manual - Page 312
occurs when you try to start up the computer. Try these solutions: m Make sure external devices are properly connected and turned on. (p. 14) m Make sure memory is installed correctly. (p. 20) m Test and repair the hard disk directory. (p. 21) Computer won't restart. Try these solutions: m Make sure - Apple IMAC | User Manual - Page 313
sure memory is installed correctly. (p. 20) m Three, four, or five beeps: Contact an Apple-authorized service provider. See the service and support information that came with your computer. Computer freezes Computer freezes before "Welcome to Mac OS" appears. Note: Startup may take several minutes if - Apple IMAC | User Manual - Page 314
Make sure external devices are properly connected and turned on. (p. 14) m Force your computer to restart. (p. 12) m Resolve system extension conflicts. (p. 17) m Test and repair the hard disk directory. (p. 21) m Reinstall system software. (p. 21) Keyboard or mouse doesn't work. Try these solutions - Apple IMAC | User Manual - Page 315
these solutions: m Take notes. (p. 11) m Check RAM disk settings in the Memory control panel. (p. 15) Normal desktop doesn't appear Screen is dark. Try these solutions: m Wake up your computer. (p. 11) m Make sure your computer is getting power. (p. 13) m Reset the PRAM. (p. 19) No icons appear in - Apple IMAC | User Manual - Page 316
some of your work will be easy to replace. If this doesn't solve your problem, return to "Problems" on page 7. Wake up your computer. If your screen is dark, a screen saver program may have darkened your screen, or the computer may have "gone to sleep" (to save energy) because it was inactive. If - Apple IMAC | User Manual - Page 317
above suggestions work, unplug your computer. Wait at least 30 seconds, then reconnect the power plug and turn your computer on by pressing the power button (®) on your Apple USB keyboard or on the front of the computer. If this doesn't solve your problem, return to "Problems" on page 7. Shut down - Apple IMAC | User Manual - Page 318
documents, quit all other open programs, and restart your computer. If this doesn't solve your problem, return to "Problems" on page 7. Make sure your computer is getting power. m Check that the keyboard and mouse cables are properly connected. Unplug each cable, then reconnect them. m Check that - Apple IMAC | User Manual - Page 319
your mouse. Consult an Apple-authorized service provider. m If you suspect a keyboard problem, borrow an Apple USB keyboard from another computer and connect it to yours. If that solves the problem, you may need to repair your keyboard. Consult an Apple-authorized service provider. For non-USB - Apple IMAC | User Manual - Page 320
control panel to make sure that you aren't trying to create a RAM disk larger than the amount of free space on your hard disk. If this doesn't solve your problem, return to "Problems" on page 7. Increase the memory available for system software. If you're having trouble starting up your computer - Apple IMAC | User Manual - Page 321
came with your computer for instructions on how to do this. If this doesn't solve your problem, return to "Problems" on page 7. Reset the window display. There may be a problem with the display of the windows. Restart the computer and hold down the Option key until the desktop icons appear. When - Apple IMAC | User Manual - Page 322
disc. Do not use excessive force. If this doesn't solve your problem, return to "Problems" on page 7. Resolve system extension conflicts. If your computer does not start up properly or behaves erratically, you may have an extension or control panel that is not compatible with another extension or - Apple IMAC | User Manual - Page 323
at the factory. 5 Click the Continue button to continue startup. 6 When the computer is ready, try the same actions that caused the problem. If the problem no longer occurs, you probably have one or more extensions or control panels that don't work with Mac OS 8.1. Continue with the steps that - Apple IMAC | User Manual - Page 324
may not work with some USB keyboards from manufacturers other than Apple. 1 Make sure the Caps Lock key is not engaged. 2 Restart your computer and immediately press and hold the Command (x), Option, P, and R keys. 3 Hold the keys down until you hear the startup sound a second time, then release the - Apple IMAC | User Manual - Page 325
correctly. If you hear one or more beeps, there may be a problem with the memory in your computer. If you recently installed RAM in your computer, check the installation instructions in the online documentation that came with your computer to make sure it is properly installed. Make sure you've used - Apple IMAC | User Manual - Page 326
Your Hard Disk Directory." If this doesn't solve your problem, return to "Problems" on page 7. Reinstall system software. Follow the instructions in Chapter 5, "Reinstalling Your Computer's Software." If this doesn't solve your problem, return to "Problems" on page 7. Problems Starting Up 21 - Apple IMAC | User Manual - Page 327
Mac OS, including troubleshooting information. Double-click the Mac OS Info Center icon on the desktop to open the Info Center. Click this button to see the online user's manual. 22 Chapter 1 Click this button to see troubleshooting information and information on Apple's online support Web sites. - Apple IMAC | User Manual - Page 328
Computer from the Apple (K) menu. Take note of the number in the Largest Unused Block section. This number tells you how much memory is available to open programs. 2 Quit the program if it's open, select its icon, and choose Get Info from the File menu. Take note of the numbers in the Minimum Size - Apple IMAC | User Manual - Page 329
this program. To free memory, quit open programs or restart the computer. You can also type a smaller number in the Minimum Size box if you want m Use the Memory control panel to reduce the size of the disk cache, remove or reduce the size of your RAM disk, or turn on virtual memory. For more - Apple IMAC | User Manual - Page 330
Chapter 5, "Reinstalling Your Computer's Software," on page 53 File menu.) See "Message appears saying there's not enough memory." on page 23. m If the problem occurs when you are trying to print, there may not be enough memory for printing. Quit other open programs to free memory. m If the problem - Apple IMAC | User Manual - Page 331
. Restart after you turn on each extension or control panel. This procedure should identify incompatible extensions and control panels. (If you just added new software to your computer, its system extension is the most probable cause of the problem.) See "Resolve system extension conflicts." on page - Apple IMAC | User Manual - Page 332
of the document can convert it to a format that one of your programs can use. m Rebuild your desktop. To rebuild the desktop, hold down the Command (x) and Option keys on the keyboard while you restart the computer. Hold down the keys until a dialog box appears asking if you want to rebuild the - Apple IMAC | User Manual - Page 333
File menu. 3 Type a lower number in the box for Preferred Size File menu. m Use the PC Exchange control panel (in the Control Panels folder in the Apple DOS computers. sharing temporarily (click Stop in the File Sharing control panel). Or you can select the shared folder, choose Sharing from the File - Apple IMAC | User Manual - Page 334
holding down the Command (x) and Control keys while you press the power button (®) on your Apple USB keyboard or on the front of the computer. Problems With Hard Disks, CDs, and Other Storage Media Problems With Hard Disks Only one document called "Where have all my files gone?" appears on the hard - Apple IMAC | User Manual - Page 335
appear on desktop. m Make sure that the disc label is facing up and the disc is centered in the tray. m Make sure the tray is closed all the way. m Try restarting your computer. m Make sure that the Apple CD-ROM and Foreign File Access extensions are turned on in the Extensions Manager control panel - Apple IMAC | User Manual - Page 336
a disc can't be put away because it is being shared, turn file sharing off in the File Sharing control panel in the Control Panels folder, available in the Apple (K) menu. If no CD-ROM disc icon appears on your screen: m Restart your computer. Immediately after you hear the startup sound, press the - Apple IMAC | User Manual - Page 337
sharing is on and you are having trouble ejecting a disc, turn file sharing off in the File Sharing control panel in the Control Panels folder, available in the Apple replace it. Problems Using ISO 9660 or High Sierra Discs Files can't be opened. m Discs in the ISO 9660 and High Sierra disc formats - Apple IMAC | User Manual - Page 338
5, "Reinstalling Your Computer's Software," on page 53. Problems Using Photo CDs Icon doesn't appear on desktop. m Reinstall the computer, see Chapter 1, "Problems Starting Up.") The program you are using may not be designed to work with large (high-resolution) image files. You can open the image - Apple IMAC | User Manual - Page 339
port on your computer. If the mouse works, then you may have a problem with the keyboard. If the mouse doesn't work, borrow an Apple USB mouse from another computer and connect it to yours. If that solves the problem, you may need to repair your mouse. Consult an Apple-authorized service provider. - Apple IMAC | User Manual - Page 340
m If you suspect a keyboard problem, borrow an Apple USB keyboard from another computer and connect it to yours. If that solves the problem, you may need to repair your keyboard. Consult an Apple-authorized service provider. m Make sure the cables on your device are not damaged or frayed. If so, - Apple IMAC | User Manual - Page 341
your screen. m Open the desktop printer icon and check for status messages. m Print a detailed report. (In the Print dialog box, select "Print and Other Problems Performance decreases. m If you notice a decrease in your computer's speed and general performance after you install a control panel or - Apple IMAC | User Manual - Page 342
size of the cache, do not set the Cache Size too high.) m In the Virtual Memory section, click Off if you haven't already done so. m Open the Keyboard control panel in the Control your computer may provide additional information about the video modes (resolution and color depth) that support 3D - Apple IMAC | User Manual - Page 343
les. To fix this problem, rebuild the desktop. Hold down the Command (x) and Option keys on the keyboard while you restart the computer. m You may be using a file-compression program to save space on your hard disk. Some compression programs change the appearance of icons. Font file can't be opened or - Apple IMAC | User Manual - Page 344
Make sure file sharing is active on the computer you're trying to connect to. (That computer's File Sharing control panel should say that file sharing is on.) Shared disk you want to use is not available. m You may already be connected to the shared disk. Check for its icon on your desktop. m You may - Apple IMAC | User Manual - Page 345
problem with some of the information your computer uses to start up file sharing. Follow these steps in order until the problem is solved: 1 Open the File Sharing control panel and enter new and configurations) by dragging the AppleTalk or TCP/IP Preferences file (inside the Preferences folder in your - Apple IMAC | User Manual - Page 346
IP control panel. Problems With Sound and Video Can't hear any sound. m If you have headphones connected to the computer, make sure they are firmly connected. Make sure the volume control volume control slider up, use the volume controls on your computer, or press the Up Arrow key on your keyboard. m - Apple IMAC | User Manual - Page 347
the X from the Enabled checkbox. Can't record from audio CD. m Check your computer's sound input port to see if a microphone or other device is connected. m You may need to reset the sound options in the Monitors & Sound control panel. See the information on sound in Mac OS Help (choose Help from - Apple IMAC | User Manual - Page 348
steps: 1 Select the application's icon in the Finder. 2 Choose Get Info from the File menu. 3 Type a lower number in the box for Preferred Size. m Install more memory (RAM). See the online documentation that came with your computer for instructions on how to do this. Problems Using Your Computer 43 - Apple IMAC | User Manual - Page 349
- Apple IMAC | User Manual - Page 350
Turn on your computer if it's not C key on your keyboard while you choose Restart screen that says "Mac OS" and the phrase "Starting Up," release the C key. In a few seconds the desktop appears. The CD's icon appears at the top-right corner of the desktop (above your hard disk icon), and the Apple - Apple IMAC | User Manual - Page 351
CD-ROM drive. Note: You can also change the startup disk by opening the Startup Disk control panel and selecting the hard disk. Restart your computer. After startup, eject the CD by selecting its icon and choosing Put Away from the File menu (or by dragging its icon to the Trash). 46 Chapter 3 - Apple IMAC | User Manual - Page 352
can be fixed easily by using Disk First Aid. Disk First Aid is an application on the software install CD that came with your computer. 1 Start up your computer from the software install CD. See Chapter 3, "Starting Up From a CD," on page 45. 2 Locate the Disk First Aid icon and double-click - Apple IMAC | User Manual - Page 353
45. m Try running Disk First Aid a second or third time. Sometimes repeating the process corrects the problem. m Use the Drive Setup utility (typically computer and the version of Mac OS installed on your computer. Apple cannot guarantee the performance of software from manufacturers other than Apple - Apple IMAC | User Manual - Page 354
, click the disk you want to update. 4 From the Functions menu, choose Update Driver. A message appears saying the new driver won't be available until you restart your computer. 5 Restart your computer. (See "Restart the computer." on page 12.) Initializing a Hard Disk The hard disk inside your - Apple IMAC | User Manual - Page 355
the disk again. If initialization fails a second time, test your hard disk for damage Mac OS Extended format is a new method of formatting hard disks that of your hard disk. For instructions, see Drive Setup Help in the on the size of your disk. 1 Start up your computer from the software install CD. - Apple IMAC | User Manual - Page 356
want to test. 4 From the Functions menu, choose Test Disk. 5 When a message tells you that the testing is complete, click Quit. If the test reveals a problem, the hard disk may be damaged. Consult an Apple-authorized service provider for assistance. Testing and Repairing Your Hard Disk Directory 51 - Apple IMAC | User Manual - Page 357
- Apple IMAC | User Manual - Page 358
preferences and settings: If you have preferences or settings in control panels and individual applications, make a note of them so you can easily reset them if necessary, after you install system software. Note: If you are having problems with your computer, you may not be able to open any files - Apple IMAC | User Manual - Page 359
runs in the background, such as virus protection software or access control software, you may need to turn it off before you reinstall system software. For instructions, see the documentation that came with the software. Important It is highly recommended that you back up the data on your hard disk - Apple IMAC | User Manual - Page 360
between a standard or a custom installation. The standard installation installs all the software you need for your model of computer and is the best choice to solve system software problems. A custom installation lets you add or remove specific system software components. Note: Keep in mind that the - Apple IMAC | User Manual - Page 361
Standard Installation 1 Follow the instructions on your screen until you see the Install Software window. Note: Your screen may look slightly different 3 Click Start. 4 When the installation has finished, restart your computer. Custom Installation 1 In the window that appears, select the software to - Apple IMAC | User Manual - Page 362
click OK. 8 Click Start. A window appears, showing the status of the installation or removal process. If you see messages about problems with your hard disk, see "Problems During Installation" on page 60. 9 When a message appears saying that the installation process finished, click Quit to leave the - Apple IMAC | User Manual - Page 363
on your hard disk. The old System Folder is renamed Previous System Folder. Since your computer has a new System Folder, after a clean installation you must reinstall custom fonts, extensions, and control panels that you've added to your system or that came with utility or application programs - Apple IMAC | User Manual - Page 364
and follow the instructions in the section, "Custom Installation" on page 56. 8 Click Start to install the software. A new System Folder is installed on your hard disk. (The old System Folder is renamed Previous System Folder.) 9 Restart your computer from the hard disk. If the problem is solved - Apple IMAC | User Manual - Page 365
If the Clean Installation Didn't Solve the Problem You may have a hardware problem. Consult an Apple-authorized service provider. You may want to revert to the Previous System Folder so that you do not have to reinstall your custom extensions, fonts, control panels, and other items not installed - Apple IMAC | User Manual - Page 366
sharing is on, turn it off. Then try installing again. m Use Disk First Aid or a third-party disk repair utility to see if it can repair the disk. Note: Before using a disk utility from a manufacturer other than Apple computer from the software install CD. You see a message that the System file - Apple IMAC | User Manual - Page 367
select the System or Finder icon. Open the File menu and choose Get Info. To unlock the computer and the version of Mac OS installed on your computer. Apple cannot guarantee the performance of software from manufacturers other than Apple. Reinstalling Individual Applications If you're having problems - Apple IMAC | User Manual - Page 368
procedure may modify that data. 1 Start up your computer from the software restore CD and open the Apple Software Restore application. For instructions, see Chapter 3, "Starting Up From a CD," on page 45. 2 Click the OK button on the introductory screen. 3 If necessary, click Switch Disk to choose - Apple IMAC | User Manual - Page 369
applications that came with your computer). 1 Start up your computer from the software restore CD and open the Apple Software Restore application. For instructions, see Chapter 3, "Starting Up From a CD," on page 45. 2 Click the OK button on the introductory screen. 3 If necessary, click Switch Disk - Apple IMAC | User Manual - Page 370
site, or don't have access to the Web, contact Apple for assistance. For information on how to contact the Apple Assistance Center, see the service and support card that came with your computer. Before you contact Apple, see the section, "Have This Information Available Before Calling." Obtaining - Apple IMAC | User Manual - Page 371
able to start up your computer, the Apple System Profiler provides information about your computer that will help you and the Apple Assistance Center troubleshoot your computer. To open the Apple System Profiler: 1 Choose Apple System Profiler from the Apple (K) menu. A System Overview window appears - Apple IMAC | User Manual - Page 372
65, 66 AppleCD Audio Player 31, 41 Apple Guide. See Mac OS Help Apple System Profiler 66 application programs clean installation and 58 compatibility issues with older Macintosh programs 29 Disk First Aid 47-48 Drive Setup program 49-51 problems with 23-29 quitting 13, 29 reinstalling individual - Apple IMAC | User Manual - Page 373
, troubleshooting 14-15, 33-35 F, G files deleting 28 DOS 28 Finder file 62 font file 38 locked files 28, 62 missing 27, 29, 61 problems with 27-28, 32-33 System file 61-62 unlocking 28, 62 "Where have all my files gone?" file 29 Windows 28 file sharing 28, 31, 32, 39-41 File Sharing control panel - Apple IMAC | User Manual - Page 374
9 resetting PRAM and 19 startup problems and 13 troubleshooting USB devices and 14, 35 Keyboard control panel 37 keyboard shortcuts canceling current operation 24 forcing application to quit 13 forcing computer to restart 12 quitting application 13, 29 rebuilding desktop 27, 38 resetting PRAM 19 - Apple IMAC | User Manual - Page 375
original software and 63 printing problems 35-36 problems. See troubleshooting ProDOS partitions 30 programs. See application programs Put Away command 31, 46 Q question mark icon 8 "QuickDraw 3D could not be found" message 27-28, 42-43 QuickTime Settings control panel 42 quitting application - Apple IMAC | User Manual - Page 376
65 testing extensions and control panels 18 testing hard disk 50-51 3D accelerator 37-38 3D Surround Sound 42 troubleshooting. See also specific problems Apple Assistance Center and 65, 66 Apple support Web site 22, 65 Apple System Profiler and 66 application programs 23-29 computer beeps 8, 20, 39 - Apple IMAC | User Manual - Page 377
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 |
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Service Source
K
iMac