Acer Aspire M3985 Acer Aspire M3985 Desktop Service Guide
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- Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 1
Acer Aspire M3985 Service Guide PRINTED IN TAIWAN - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 2
Revision History Please refer to the table below for the updates made on this service guide. Date Chapter Updates ii - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 3
, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated. iii - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 4
of all necessary servicing, repair, and any incidental or consequential damages resulting from any defect in the software. Acer is a registered trademark of Acer Corporation. Intel is a registered trademark of Intel Corporation. Pentium Dual-Core, Celeron Dual-Core, Core 2 Duo, Core 2 Quad, Celeron - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 5
Conventions The following conventions are used in this manual: SCREEN MESSAGES Denotes actual messages that appear on screen. NOTE . Gives precautionary measures to avoid possible hardware or software problems. Reminds you to do specific actions relevant to the accomplishment of procedures. v - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 6
it will not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the list provided by your regional Acer office to order FRU parts for repair and - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 7
Rear Panel 7 Hardware Specifications and Configurations 8 Power Management Function(ACPI support function) 12 System Utilities 13 CMOS Setup VGA Card 33 Removing the Hard Disk Drive 35 Removing the Optical Drive 37 Removing the System Fan 39 Removing the Power Supply 41 Removing - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 8
System Troubleshooting 76 Hardware Diagnostic Procedure 76 System Check Procedures 77 Power System Check 77 System External Inspection 77 System Internal Inspection 77 Beep Codes 78 Checkpoints 79 BIOS Recovery 82 Jumper and Connector Information 85 M/B Placement 85 Jumper - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 9
1600 (1GB / 2GB / 4GB). Graphics • Intel® HD Graphics Support (supported by CPU). • Dual independent display. • Digital display (HDMI/DVI/DP/eDP) and VGA. • DVMT 5.0 technology support. • Enhanced 3D and Clear Video technology support. • Need to measure VGA follow Acer VGA SOP. • Monitor compatible - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 10
AVLC. Graphics card • No mechanical retriction to support dual slot, full length graphics cards in ODD: Support BD/SuperMulti/DVD ROM. LAN • Giga Lan, Intel 82579V co-lay with Realtek LAN 8111E. SUPER IO • Support PECI should meet USB IF spec and support 1A current over drive. 2 Chapter 1 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 11
Mechanism) for LGA 1155 CPU (assign by Acer). • 1 * 24-pin ATX PWR connector. • 1 * H2X4 Power Supply Connector. • 4 * DDR3 DIMM Socket. • 5 * SATA 3Gb/s. • 1 * SATA 6Gb/s. • 2 * USB2.0 H5X2 Header (support 4 ports). • 1 * USB 3.0 H10x2 Header (support 2 ports). Location is defined in EE requirement - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 12
System BIOS • Type: Use SPI Flash • System BIOS: 8MB • Kernel: AMI Kernel with Acer skin Power supply • Non PFC 300W / PFC 300W /FR 300W. • Support models are listed on AVLC. 4 Chapter 1 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 13
Block Diagram Chapter 1 5 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 14
. Component 1 USB 2.0 ports 8 2 HDD activity indicator 9 3 Micro SD slot 10 4 XD(XD-Picture) slot 11 5 CF I/II (CompactFlash Type I/II) slot button to access the removable HDD. Power button MS/MS PRO slot SD/MMC(Secure Digital/MultiMedia Card)slot Headphone/Speaker-out/line-out jack - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 15
Rear Panel No. Component 1 Power connector 2 PS2 keyboard port 3 HDMI port 4 VGA port 5 USB 2.0 ports 6 Line-out jack 7 Microphone-in jack 8 Expansion slot (Modem card and Graphics card) 9 line-in jack 10 RJ45 LAN connector 11 USB 3.0 ports 12 System FAN 13 PS2 mouse port - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 16
BIOS Item Specification BIOS code programer AMI Kernel with Acer skin BIOS version P01-A0 BIOS ROM type SPI Flash BIOS ROM size 8Mb Support protocol SMBIOS(DMI)2.4/DMI2.0 Device Boot Support 1st priority: SATA HDD 2nd priority: CD-ROM 3rd priority: Removable Device 4th priority: LAN - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 17
size per socket 1GB/2GB/4GB Support memory type DDRIII Support memory interface DDRIII 1333/1600MHz Support memory voltage 1.5V Support memory module package 240-pin DDRIII Support to parity check feature Yes Support to error correction code (ECC) feature No Memory module combinations - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 18
Sampling rate MPU-401 UART support Microphone/Headphone jack Specification Intel PCH Panther Point B75 REALTEK/ALC662-VD0-GR codec 5.1 Enable/disable by BIOS Setup Stereo ALC662-VD meets audio performance and function requirements for the latest Microsoft Windows Logo Program and Lync specification - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 19
S1 S3 S4 Power Button V V V USB Keyboard/Mouse V V N/A PME Disabled Disabled Disabled RCT Disabled Disabled Disabled WOR Disabled Disabled Disabled • Devices wake up from S3 should be less than. • Devices wake up from S5 should be less than 10 seconds. S5 V N/A Disabled - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 20
activated (keyboard for DOS, keyboard &mouse for Windows. • Resume recovery time 3-5sec Global Standby Mode • Global power management timer(2-120minutes,time step=10minute). • Hard • S0,S1,S2 and S5 sleep state support. • On board device power management support. • On board device configuration - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 21
the system RAM which allows configuration data to be retained when power is turned off. Before you run the CMOS Setup Utility, make sure that you have saved all open files. The system reboots immediately after you close the Setup. NOTE: CMOS Setup Utility will be simply referred to as "BIOS", "Setup - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 22
- Move the cursor to the last page of a multiple page menu. • + and - keys - Select a value for the currently selected field (only if it is user-configurable). Press these keys repeatedly to display each possible entry, or the Enter key to choose from a pop-up menu. NOTE: Grayed-out fields are not - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 23
Number Asset Tag Number System Date System Time (hh:mm:ss) Description Version number of the BIOS setup utility. Date when the BIOS setup utility was built Type of CPU installed on the system. Core speed of the CPU installed on the system. Physical CPU count Total size of system memory installed - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 24
Advanced Parameter Miscellaneous Advanced Chipset Configuration Integrated Peripherals PC Health Status Description Press Enter to access the Miscellaneous submenu Press Enter to access the Advanced Chipset Configuration submenu Press Enter to access the Integrated - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 25
AHCI Port0/1/2/3/4/5 Bootup Num-lock Description Displays the status of auto detection of the AHCI device. Selects power on state for Num Lock. USB Beep Message Enables or disables BIOS to display error beeps or messages during USB device enumeration. Option On Off Enabled Disabled Chapter 2 17 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 26
Intel VT When enabled, this feature allows the OS to reduce power consumption. When disabled, the system operates at maximum CPU speed. When enabled, the processor disables code execution when a worm attempts to insert a code in the buffer preventing damage and worm propagation. When disabled, the - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 27
Integrated Peripherals Parameter Onboard SATA Controller Onboard SATA Mode Onboard USB Controller Legacy USB Support USB Storage Emulation Onboard Audio Controller Onboard LAN Controller Onboard LAN Option ROM Description Enables or disables the onboard SATA controller. Select an operating mode - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 28
PC Health Status Parameter Smart Fan Description Enables or disables the smart system fan control function. Option Enabled Disabled 20 Chapter 2 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 29
power supply in order to use this feature.Use this item to dowake-up action if inserting the PCIE card. Enables or disables an onboard LAN controller to generate a wake event. Enables or disables to wake up the system from a power saving mode using a PS2 keyboard or mouse. If enabled, press any key - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 30
. If not, Not Installed displays. This item allows you to change user password. You can select this option and press to access the supervisor password. Setting a supervisor password 1. Use the up/down arrow keys to select Change Supervisor Password menu then press Enter. A password box - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 31
boot order from the available devices. EFI Hard Disk CD^DVD Removable Device LAN Press Enter to access the EFI Device Priority submenu and specify the boot priority sequence from available network drives. When enabled, the BIOS splash screen displays during startup. When disabled, the diagnostic - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 32
Exit Setup Save Changes Discard Changes Load Default Settings Save as User Default Settings Load User Default Settings Description When you have completed the system configuration changes, select this option to leave the BIOS Setup Utility and reboot the computer, so the new system configuration - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 33
3 System Disassembly and Assembly This chapter contains step-by-step procedures on how to disassemble and assembly the desktop computer for maintenance and troubleshooting. Disassembly Requirements To disassemble the computer, you need the following tools: • Wrist grounding strap and conductive mat - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 34
procedure, perform the steps listed below: 1. Turn off the system and all the peripherals connected to it. 2. Unplug the power cord from the power outlets. 3. Unplug the power cord from the system. 4. Unplug all peripheral cables from the system. 5. Place the system unit on a flat, stable surface - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 35
Removing the Side Panel 1. Remove the two screws located on the rear edge of the side panel. 2. Slide the side panel toward the back of the chassis until the tabs on the cover disengage with the slots on the chassis. 3. Lift the side panel away from the server and put it aside for reinstallation - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 36
Removing the Front Bezel 1. Remove the side panel. Refer to the previous section for instructions. 2. Release the front bezel from the chassis interior. 3. Pull the bezel away from the chassis. 28 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 37
Removing the Heat Sink Fan Assembly WARNING:The heat sink becomes very hot when the system is on. NEVER touch the heat sink with any metal or with your hands. 1. Use a long-nosed screwdriver to loosen the four screws on the heat sink, in the order as shown below. Note:CPU Fan has been highlighted - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 38
3. Disconnect the fan cable from the mainboard. 4. Remove the heat sink fan assembly then lay it down in an upright position-with the thermal patch facing upward. Do not let the thermal patch on the heat sink fan assembly touch the work surface. 5. Use an alcohol pad to wipe off the thermal grease - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 39
Removing the Processor IMPORTANT:Before removing a processor from the mainboard, make sure to create a backup file of all important data. WARNING:The processor becomes very hot when the system is on. Allow it to cool off first before handling. 1. Release the load lever. 2. Lift the load lever and - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 40
3. Pull out the processor from the socket. IMPORTANT: If you are going to install a new processor, note the arrow on the corner to make sure the processor is properly oriented over the socket. 32 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 41
Removing the VGA Card 1. Remove the screw that secures the card to the chassis. 2. Open PCI Latch. Chapter 3 33 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 42
the direction indicated. 4. Gently pull up the expansion board (1), move it slightly to the left and remove (2) from the slot. Note:Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 43
Removing the Hard Disk Drive 1. Disconnect the data and power cables from the rear of the optical drive. 2. Disconnect the other end of the data cable from the main board. 3. Remove the screw that secures the HDD cage to the chassis. Chapter 3 35 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 44
4. Lift the HDD cage up and turn it over. 5. Remove the HDD module. a. Remove the four screws secure the HDD module to the HDD cage. b. Slide the HDD out of the cage. 36 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 45
Removing the Optical Drive 1. Disconnect data and power cable from the rear of the optical drive. 2. Disconnect the other end of the data cable from the mainboard. 3. Remove the screws that secure the optical drive to the chassis. Chapter 3 37 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 46
4. Pull the Pull the optical drive out of the chassis. 38 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 47
Removing the System Fan 1. Use a knife to cut the cable tying. 2. Disconnect system FAN cable from main board connector. Chapter 3 39 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 48
3. Remove the four screws that secure the system fan to the chassis. 4. Remove the system fan from chassis. Note:System fan has been highlighted with the yellow rectangle as above image shows.Please detach the system fan and follow local regulations for disposal. 40 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 49
Removing the Power Supply 5. Disconnect the 4-pin and 24-pin power supply cables from the mainboard. 6. Remove the four screws that secures the power supply to the chassis. Chapter 3 41 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 50
7. Lift the power supply module out of the chassis. 42 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 51
of the DIMM slot outward to release the DIMM(1). 2. Gently pull the DIMM upward to pull it away from the M/B(2). Note:Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal. Chapter - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 52
front panel cable, front audio cable, USB cable and card reader cable from the main board, then take out the these cables from the cable retention clip. 2. Remove the eight screws that secure the mainboard to the chassis. Note:Circuit boards >10 cm² has been highlighted with the yellow rectangle as - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 53
3. Lift the board from the chassis. 4. Punching in IO Shield then you can remove it. Chapter 3 45 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 54
5. Remove the RTC battery. Note:RTC battery has been highlighted with the yellow circle as above image shows.Please detach the RTC battery and follow local regulations for disposal. 46 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 55
Removing the Top Cover 1. Gently release the top bezel retention tabs from the chassis interior. 2. When perform the step one, then release the top bezel retention tabs from the chassis interior. Chapter 3 47 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 56
3. Pull the top cover away from the chassis. 4. Pull the power switch and LED cable from chassis hole. 48 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 57
Removing the Power Switch and LED Cable Assembly 1. Release the locking tabs (1) and gently power switch cable out of the bracket (2). 2. Release the locking tabs (1) and gently LED cable out of the bracket (2). 3. Release the two locking tabs and take out the cable. Chapter 3 49 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 58
Removing the Card Reader 1. Removing the two screws from the chassis. 2. Lift the card reader away from chassiss. then Pull the card reader cable from chassis hole. 50 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 59
Removing the Top USB and Audio I/O Assembly 1. Removing the two screws from the chassis. 2. Release these cables from the chassis. 3. Lift the top USB and audio I/O assembly away from chassiss. Chapter 3 51 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 60
4. Removing the top USB and audio I/O board. a. Use screwdriver to remove the two screws. 5. Grasp the bracket then gently Pull the USB board out of the bracket. 52 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 61
Assembly Requirements To assemble the computer, you need the following tools: • Wrist grounding strap and conductive mat for preventing electrostatic discharge • Flat-blade screwdriver • Philips screwdriver • Hex screwdriver • Plastic flat-blade screwdriver • Plastic tweezers NOTE: The screws for - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 62
procedure, perform the steps listed below: 1. Turn off the system and all the peripherals connected to it. 2. Unplug the power cord from the power outlets. 3. Unplug the power cord from the system. 4. Unplug all peripheral cables from the system. 5. Place the system unit on a flat, stable surface - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 63
Reinstalling the Processor 1. Release the load lever. 2. Lift the load lever and load plate to the fully open,then take out the CPU cover. 3. Put the CPU in the seat and close the load plate and load lever. NOTE: When you install the processor, note the arrow on the corner to make sure the processor - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 64
Reinstalling the Memory 1. Open the holding clips on both sides of the DIMM slot outward. 2. Insert the memory module into the DIMM1 slot (1) and then press it down until it clicks into place (2). 3. If a second memory module is available, install it in the DIMM2 slot by repeating step 1. 56 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 65
Removing the Side Panel 1. Remove the four screws located on the rear edge of the side panel. 2. Slide the side panel toward the back of the chassis until the tabs on the cover disengage with the slots on the chassis. 3. Lift the side panel away from the server and put it aside for reinstallation - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 66
Removing the Cage of Hard Disk Drive 1. Remove the screw that secures the HDD cage to the chassis. 2. Lift the HDD cage up and turn it over. 58 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 67
Removing the PCI Cover 1. Remove the PCI cover. NOTE: Based on actual requirment to remove the PCI cover. Chapter 3 59 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 68
Reinstalling the Power Supply 1. Install the power supply to chassis. 2. Fix the four screws. 60 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 69
Reinstalling the I/O Shielding 1. Install I/O shielding into chassis. Chapter 3 61 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 70
Reinstalling the MainBoard 1. Slide the mainboard into the chassis, with the I/O ports of the mainboard extruding from their port holes, then lower the mainboard in place. 2. Make sure the screw holes on the main board are aligned with those on the chassis. Secure the mainboard with eight screws. - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 71
3. Connect the ATX 24Pin Power cable and ATX 4Pin Power cable to main board. 4. Connector the front USB, card reader and front audio cable to motherboard. and put the these cables into the cable retention clip. Chapter 3 63 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 72
Reinstalling the Optica Drive 1. Removing the front bezel, please refer to "Removing the front bezel" on page 28. 2. Install the ODD into the bay. 3. Secure the optical drive to the chassis using two screws. 64 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 73
4. Connect the power cables and data cable to the rear of the optical drive. 5. Connect the other end of the data cable to the mainboard. Chapter 3 65 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 74
Reinstalling the Hard Disk Drive 1. Install the HDD. a. Install the HDD into the cage. b. Secure the HDD module to the HDD cage using the four screws. 2. Install HDD cage into chassis by the track. 66 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 75
3. Secure the bracket of HDD to the chassis using the screws. 4. Connect the data cable and power cable to the rear of the hard disk drive. 5. Connect the other end of the data cable to the main board. Chapter 3 67 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 76
expansion board over the PCIE16X 1 slot and move it slightly to the right (1), making sure the card guide is aligned with the slot guide on the chassis. Insert the expansion card properly connector into PCIE16X 1 slot (2). 2. Insert the expansion board properly until that expansion slot lock locks - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 77
3. Close the PCI Latch, fix the three screws. Chapter 3 69 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 78
Reinstalling the System Fan 1. Push the system fan to chassis. 2. Fix the four screws. 3. Connect the system fan power cable to Main board. 70 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 79
Reinstalling the Heat Sink Fan Assembly 1. Position the heat sink fan assembly on top of the processor, making sure the screws are aligned with the screw holes on the main board. 2. Secure the heat sink fan assembly to the screw holes on the main board using four screws. Chapter 3 71 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 80
3. Connect the cooler cable to the main board connector. 72 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 81
Reinstalling the Front Bezel 1. Take 2PCS cable tying, use cable tying to bundle PSU power cables & system FAN power cable, and use other 1pc cable tying to bundle PSU power cables & System FAN power cable on bracket. 2. Insert the tabs on the front bezel into the notches (1) on the right side of - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 82
3. Make sure the front bezel retention tabs are securedly fastened to the chassis interior. 74 Chapter 3 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 83
Reinstalling the Side Panel 1. Install the side Panel, then fix two screws. Chapter 3 75 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 84
Chapter 4 System Troubleshooting This chapter provides instructions on how to troubleshoot system hardware problems. Hardware Diagnostic Procedure IMPORTANT:The diagnostic tests described in this chapter are only intended to test Acer products. NonAcerproducts, prototype cards, or modified options - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 85
their appropriate connectors. 9. Verify that all components are Acer-qualified and supported. 10. Replace the system covers. 11. Power on the system. 12. If the problem with the system is not evident, you can try viewing the POST messages and BIOS event logs during the system startup. 77 Chapter 4 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 86
Beep Codes Beep codes are used by the BIOS to indicate a serious or fatal error to the end user. Beep codes are used when an error occurs before the system video has been initialized. Beep codes will be generated by the system board speaker, commonly referred to as the PC speaker. AMIBIOS displays - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 87
block code to memory in right segments. Copies BIOS from ROM to RAM for faster access. Performs main BIOS checksum and updates recovery status accordingly. Both key sequence and OEM specific method is checked to determine if BIOSrecovery is forced. Main BIOS checksum is tested. If BIOS recovery is - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 88
Checkpoint DA DC E1-E8 ECEE Description Restore CPUID value back into register. Give control to BIOS POST (ExecutePOSTKernel). See POST Code Checkpoints section of document for more information. System is waking from ACPI S3 state. OEM memory detection/configuration error. This range is reserved - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 89
Recovery Code Checkpoints The Bootblock recovery code gets control when the BIOS determines that a BIOS recovery needs to occur because the user has forced the update or the BIOS checksum is corrupt. The following table describes the type of checkpoints that may occur during the Bootblock recovery - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 90
file to "AMIBOOT.ROM" and burn in BIOS ROM file to CDROM or copy BIOS ROM file to USB Thumb drive. 2. Automatic mode: • When BIOS flash crashed, using recovery CDROM/USB Thumb drive to recover BIOS. 3. Recovery Menu and Step: a. Before recovering BIOS, please change "Reset NVRAM" item form "Enabled - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 91
b. Select "Proceed with flash update" and Press "Enter". 83 Chapter 4 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 92
c. System will start to flash update progress. d. Once firmware update is completed, press any key to reboot the system. Chapter 4 84 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 93
3 DIMM1~4 5 CMOS Description No Label Description LGA1155 socket for 2 Intel CPU_FAN1 CPU cooling fan connector 240-pin DDR3 SDRAM slots 4 ATXPOWER Standard 24-pin ATX power connector Clear CMOS header 6 FRONT PANEL Front panel switch/ LED header Chapter 5 85 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 94
9 BIOS_WP 11 F_SSUSB1 13 PCIE_X16 Description No Serial ATA Gen2 8 connectors BIOS write protect 10 header Front panel USB3 12 header PCI Express x16 slot 14 Label SATA0 x1 slot Front panel audio header Auxiliary 4-pin power connector TPM header Board ID header 86 Chapter 5 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 95
Jumper Setting This section explains how to set the jumper for correct configuration of the main board. Jumpers with more than one pin are numbered. When setting a jumper, ensure that the jumper caps are placed on the correct pins. The following illustration shows the location of SW1. The following - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 96
The following table shows the settings of the 3-pin E50 jumper. Place the jumper cap on pins 1 and 2 to Enable ME OVERRIDE. Place the jumper cap on pins 2 and 3 to Disable ME OVERRIDE. Jumper E50 Type 3-pin Description FLASH_OVER RIDE Setting (default) 1-2: Enable ME(default) 2-3: Disable ME 88 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 97
. Place the jumper cap on pins 1 and 2 to Enable Protection. Place the jumper cap on pins 2 and 3 to Disable Protection. Jumper E51 Type 3-pin Description BIOS write Protection Setting (default) 1-2: Enable 2-3: Disable(default) Chapter 5 89 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 98
Definition 1: GND 2: +12V 3: CPUFAN_TACH 4: CPUFAN_PWM 5: NC FRONT PANEL HEADER FRONT USB HEADER 1: HD_LED# 2: FP_LED+ 3: GND 4: GND 5: GND 6: PWRBTN# 7: SYS_RESET# 8: GND 9: NC 10: KEY 11: +5VSB 12: FP_ACTP 13: NC 14: LAN_ACT# 1: +SBV1213 2: +SBV1213 3: LP124: LP135: LP12+ 6: LP13+ 7: GND 8: GND - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 99
USB HEADER Definition 1: +SBV89 2: +SBV89 3: LP94: LP85: LP9+ 6: LP8+ 7:GND 8: GND 9: KEY 10: NC FRONT USB3.0 HEADER FRONT AUDIO HEADER 1: USB3_HEADER_P1 2: LP0+ 3: LP1+ 4: LP05: LP16: GND 7: GND 8: USB3_TX_H_P1 9: USB3_TX_H_P2 10: USB3_TX_H_N1 11: USB3_TX_H_N2 12: GND 13: GND 14: USB3_RX_H_P1 15 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 100
Header Name Function TPM HEADER Definition 1: CK_33M_TPM 2: GND 3: LFRAME# 4: KEY 5: PLTRST# 6: NC 7: LAD3 8: LAD2 9: +3P3V 10: LAD1 11: LAD0 12: GND 13: NC 14: NC 15: +3P3VSB 16: SERIRQ 17: GND 18: F_CLKRUN# 19: LPCPD# 20: NC 92 Chapter 5 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 101
: NC 13: GND 14: GND 15: GND 16: GND 17: GND 1: RED 2: GREEN 3: BLUE 4,11: NC 9: +5V_VGA_IN 12: VGADATA 13: VHSYNC 14: VVSYNC 15: VGACLK 5,6,7,8,10,16,17: GND SATA CONN(BLUE) 1: GND 2: SATA_TXP0_C 3: SATA_TXN0_C 4: GND 5: SATA_RXN0_C 6: SATA_RXP0_C 7: GND 8:NC 9:NC Chapter 5 93 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 102
1:+3P3V 14:-12V 2: +3P3V 15:GND 3: GND 16: ATX_PSO 4:+5V 17:GND 5:GND 18:GND 6:+5V 19:GND 7:GND 20:-5V 8: ATX_PWRGD_PWRCORD 9:+5VA 21:+5V 10:+12V 22:+5V 11:+12V 23:+5V 12:+3P3V 24:GND 13:+3P3V 1: GND 2: GND 3: +12V_CPU 4: +12V_CPU 94 Chapter 5 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 103
HDMI_CON_19P USB_CON_2X4P 1: HDMI_TMDS_DATA2_P 2: GND 3: HDMI_TMDS_DATA2_N 4: HDMI_TMDS_DATA1_P 5: GND 6: HDMI_TMDS_DATA1_N 7: HDMI_TMDS_DATA0_P 8:GND 9: HDMI_TMDS_DATA0_N 10: HDMI_TMDS_CLK_P 11:GND 12: HDMI_TMDS_CLK_N 13~14:NC 15: HDMI_DDC_CLK_LS 16: HDMI_DDC_DATA_LS 17:GND 18: +5V_HDMI 19: - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 104
USB_CON_2X9P 1: +5V_DUAL_USB_B 2: LP2- 3: LP2+ 4: GND 5: USB3_SS_RXN3 6: USB3_SS_RXP3 7: GND 8: USB3_SS_TXN3 9: USB3_SS_TXP3 10: +R_VBUS_OUT 11:LP312: LP3+ 13: GND 14: USB3_SS_RXN4 15: USB3_SS_RXP4 16: GND 17: USB3_SS_TXN4 18: USB3_SS_TXP4 19,20: GND AUDIO_3IN1_AZA_13P 1: GND 2: MIC1_L 3: MIC1_JD - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 105
USB_LAN_LED 1: +5V_DUAL_USB_B 2: LP103: LP10+ 4: GND 5: +5V_DUAL_USB_B 6: LP117: LP11+ 8:GND 9: LAN_CTR 10: LAN_MDI0_P_C 11: LAN_MDI0_N_C 12: LAN_MDI1_P_C 13: LAN_MDI1_N_C 14: LAN_MDI2_P_C 15: LAN_MDI2_N_C 16: LAN_MDI3_P_C 17: LAN_MDI3_N_C 18:GND 19: ACTP_R 20: LAN_ACT#_R 21:LAN_LILEDN 22: - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 106
Replaceable Unit) list in global configuration of the Aspire M3985 desktop computer. Refer to this chapter whenever ordering the Service Guide. For Acer authorized service providers, your Acer office may have a different part number code from those given in the FRU list of this printed Service Guide - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 107
Aspire M3985 Exploded Diagram NOTE: This section will be updated when more information becomes available. ITEM 1 2 3 4 5 6 7 8 9 NAME PCI Door Rear Chassis IO Shielding Power Supply MB Chassis Support Chassis Support MB Support Sub Chassis 99 Q'TY 1 1 1 1 1 1 1 1 1 ITEM 21 22 23 24 25 26 27 28 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 108
ITEM 10 11 12 13 14 15 16 17 18 19 20 NAME Holder Bezel Top Bezel Cover Deco Power Button Spring Switch HDD Lens LED MCR Top USB ODD Button Up Q'TY 1 1 1 1 1 1 1 1 1 1 1 ITEM 30 31 32 33 34 35 36 37 38 39 NAME - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 109
Hai Aspire Bezel AM361 USB 4 port bezel w/ 1 ext. HDD carrier for HM090M chassis (2011 New CI) PZ.11900.310 "CPU Intel Core i7 2600 3.4G 8M 1333 95W D-2 KC.26001.CI7 N/A LGA-1155, Sandy Bridge" "Core i3-2120 (3.30G 3M DDR3 1333) , Q0 , 65W , Intel HD Graphics 2000" KC.21201.CI3 Core i5-2500 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 110
Number Acer P/N Celeron G460 (1.7G 1.5M 1066FSB LGA1155) Ivy Bridge E-0 6MB 4c LGA 3.1GHz STD 77W I53450 (FLOOR) GT1 QS Ivy Bridge E-0 6MB 4c LGA 3.3GHz STD 77W I53550 (HIGH BIN) VPRO GT1 QS "Core i3-2120 (3.30G 3M DDR3 1333) , Q0 , 65W , Intel HD Graphics 2000" Ivy Bridge E-0 4c LGA 95W i7-3770 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 111
Category ODD 103 Part Number Acer P/N "HDD WD 3.5"" 5400rpm 1500GB WD15EARS22MVWB0 (GP667-3D) SATA II 64MB LF F/ W:51.0AB51" "HDD WD 3.5"" 5400rpm 1500GB WD15EARX22PASB0 (GP667-3D) SATA III 64MB LF F/ W:51. - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 112
Category VGA Chapter 6 Part Number Acer P/N ODD PLDS Super-Multi DRIVE HH DL 16X DH16ABSH LF Black Bezel (HF+Win7) SATA ODD PIONEER Super-Multi DRIVE HH DL 16X DVR-219RS - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 113
WN7601R, Ralink RT3090, 802.11b/g/n 1x1 WLAN PCI-E x1 card NI.10200.037 N/A External Speaker Power Supply Mouse 105 JS speaker USB MS1238UA with new acer logo SP.10600.048 N/A JS speaker USB MS1238UA with new acer logo ( meet AJC spec) SP.10600.049 Neosonica speaker USB 9M-20A200-000 with - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 114
.121 MS.11200.122 MS.11200.123 Exploded Diagram Item N/A Keyboard LITE-ON SK-9660B RF2.4 Black US with new acer logo KB.RF40B.167 N/A Keyboard LITE-ON SK-9660B RF2.4 Black Traditional Chinese with new acer logo KB.RF40B.168 Keyboard LITE-ON SK-9660B RF2.4 Black Simplified Chinese with new - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 115
Keyboard LITE-ON SK-9660B RF2.4 Black Arabic/ French with new acer logo Keyboard LITE-ON SK-9660B RF2.4 Black Kazakh with new acer logo Keyboard LITE-ON SK-9660B RF2.4 Black Turkmen with new acer logo KB.RF40B.181 KB.RF40B.182 KB.RF40B.183 KB.RF40B.184 KB.RF40B.185 KB - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 116
SK-9621B USB Black Arabic/ English with new acer logo Keyboard LITE-ON SK-9621B USB Black Thailand with new acer logo Keyboard LITE-ON SK-9621B USB Black Spanish with new acer logo Keyboard LITE-ON SK-9621B USB Black Portuguese with new acer logo Keyboard LITE-ON SK-9621B USB Black Canadian - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 117
-ON SK-9621B USB Black Swiss/G with new acer logo Keyboard LITE-ON SK-9621B USB Black Belgium with new acer logo Keyboard LITE-ON SK-9621B USB Black Icelandic with new acer logo Keyboard LITE-ON SK-9621B USB Black Norwegian with new acer logo Keyboard LITE-ON SK-9621B USB Black Hebrew - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 118
SK-9611 PS/2 Black Arabic/ English with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Thailand with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Spanish with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Portuguese with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Canadian - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 119
-ON SK-9611 PS/2 Black Swiss/G with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Belgium with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Icelandic with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Norwegian with new acer logo Keyboard LITE-ON SK-9611 PS/2 Black Hebrew - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 120
logo Keyboard PRIMAX KBRF36211 RF2.4 Black UK with new acer logo Keyboard PRIMAX KBRF36211 RF2.4 Black Dutch with new acer logo Keyboard PRIMAX KBRF36211 RF2.4 Black Swiss/G with new acer logo Keyboard PRIMAX KBRF36211 RF2.4 Black Belgium with new acer logo KB.PS20B.196 KB.PS20B.197 KB.PS20B.198 - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 121
logo Keyboard PRIMAX KBRF36211 RF2.4 Black Czech/Slovak with new acer logo Keyboard PRIMAX KBRF36211 RF2.4 Black Swiss/FR with new acer logo Keyboard PRIMAX KBRF36211 RF2.4 Black Korean with new acer logo Acer P/N KB.RF40P.163 Exploded Diagram Item KB.RF40P.164 KB.RF40P.165 KB.RF40P.166 KB - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 122
logo Keyboard PRIMAX KB36211 USB Black Japanese with new acer logo Keyboard PRIMAX KB36211 USB Black German with new acer logo Keyboard PRIMAX KB36211 USB Black Italian with new acer logo Keyboard PRIMAX KB36211 USB Black French with new acer logo Keyboard PRIMAX KB36211 USB Black Swedish with new - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 123
logo Keyboard PRIMAX KB36211 USB Black Norwegian with new acer logo Keyboard PRIMAX KB36211 USB Black Hebrew with new acer logo Keyboard PRIMAX KB36211 USB Black Polish with new acer logo Keyboard PRIMAX KB36211 USB Black Slovenian with new acer logo Keyboard PRIMAX KB36211 USB Black Slovak with new - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 124
logo Keyboard PRIMAX KB36111 PS/2 Black UK with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Dutch with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Swiss/G with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Belgium with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Icelandic with new - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 125
logo Keyboard PRIMAX KB36111 PS/2 Black Greek with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Danish with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Czech with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Romanian with new acer logo Keyboard PRIMAX KB36111 PS/2 Black Turkish with new - Acer Aspire M3985 | Acer Aspire M3985 Desktop Service Guide - Page 126
Category Part Number Keyboard PRIMAX KB36111 PS/2 Black US with India Rupee Symbol with new acer logo Acer P/N KB.PS20P.290 Exploded Diagram Item Chapter 6 118