Compaq Presario CQ20-400 Compaq Presario CQ20 Notebook PC - Maintenance and Se
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- Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 1
b Compaq Presario CQ20 Notebook PC Maintenance and Service Guide Document Part Number: 482402-002 October 2008 This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, components, and spare - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 2
, and Windows Vista are U.S. registered trademarks of Microsoft Corporation. SD Logo is a trademark of its proprietor. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 3
Safety warning notice Å WARNING: To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 4
4-5 Component replacement procedures 4-6 Serial number 4-6 Computer feet 4-7 Battery 4-7 Hard drive 4-8 Memory module 4-10 WLAN module 4-12 Optical drive 4-14 Keyboard 4-16 Top cover 4-18 Speaker assembly 4-22 Display assembly 4-24 Audio board 4-30 Maintenance and Service Guide iv - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 5
Fan 4-32 System board 4-34 RTC battery 4-36 Modem module 4-38 Bluetooth module 6 Specifications Computer specifications 6-1 12.1-inch, WXGA display specifications 6-2 Hard drive specifications 6-2 DVD/CD-RW Combo Drive specifications slotted screw 7-16 v Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 6
9-2 HDMI 9-3 RJ-11 (modem 9-4 RJ-45 (network 9-5 Universal Serial Bus 9-6 10 Power cord set requirements Requirements for all countries and regions 10-1 Requirements for specific countries and regions 10-2 11 Recycling Battery 11-1 Display 11-1 Index Maintenance and Service Guide vi - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 7
Panel Webcam Description Models with Models with GL40 system GM45 system board board Compaq Presario CQ20 Notebook PC X X Intel® Core™2 Duo processors: T9600 2.8-GHz processor, X X (WLAN) antennae Integrated low-light VGA camera X X (Continued) Maintenance and Service Guide 1-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 8
Supports dual-channel memory Supports up to 4 GB of system RAM PC2-6400, 800-MHz, DDR2 PC2-6400, 800-MHz, DDR2 supports Supports 9.5-mm, 2.5-inch hard drives Customer-accessible Serial ATA Supports the following drives: ■ 400 X X X X X X X X X (Continued) 1-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 9
Button X 65-W AC adapter with localized and pointing stick cable plug X support (3-wire plug with ground pin, supports 3-pin DC connector) 4-cell, 37-Wh Li-ion battery X 8-cell, 73-Wh Li-ion battery X Security cable slot X X X X X X X X X (Continued) Maintenance and Service Guide 1-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 10
Category Operating system Serviceability Description Preinstalled: Windows Vista® Home Basic 32 with Office 2007 Ready Windows Vista Business 32 with Office 2007 Ready Windows Vista Home Premium 32 with Office 2007 Ready FreeDOS End-user replaceable parts: AC adapter Battery (system) Hard drive - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 11
to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices are located in Help and Support. Record sound. ✎ All models have at least 1 internal microphone. On: The webcam is in use. Records audio and video and captures still photographs - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 12
Scrolls up or down. *This table describes factory settings. To view or change device preferences, select Start > Control Panel > Hardware and Sound > Mouse. 2-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 13
the computer. ■ When the computer is on, press the button to shut down the system. ■ When the computer is in Hibernation, press the exit the Sleep state. If the computer has stopped responding and Windows® shutdown procedures are ineffective, press and hold the power button Service Guide 2-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 14
Keys Item Component 1 esc key 2 fn key 3 Windows logo key 4 Windows applications key 5 Embedded numeric keypad keys 6 Function keys when pressed in combination with a function key or the esc key. Displays the Windows Start menu. Displays a shortcut menu for items beneath the pointer. Can be used - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 15
Service Guide Description On: Caps lock is on. ■ Amber: A battery is charging. ■ Green: A battery is close to full charge capacity. ■ Blinking amber: A battery device, such as a wireless local area network (WLAN) device, an HP Broadband Wireless Module, and/or a Bluetooth® device, is on. ■ Amber - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 16
models only) HP 3D DriveGaurd audio. Item Component 1 Battery light 2 Power connector 3 battery that is the only available power source has reached a low battery level. When the battery reaches a critical battery level, the battery stays off until the battery reaches a low battery level. Connects an - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 17
Function 1 ExpressCard slot (select models only) Supports optional ExpressCards. 2 Digital Media Slot (select models only) Supports the following optional digital card formats: ■ MultiMedia , but it may not prevent the computer from being mishandled or stolen. Maintenance and Service Guide 2-7 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 18
fan to cycle on and off during routine operation. Holds the battery. Releases the battery from the battery bay. Holds a WLAN module (select models only). ✎ , and then contact technical support through Help and Support. Holds the hard drive and two memory modules. 2-8 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 19
unique to each product. This number provides specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. This is the number you use to locate documents, drivers, and support for your computer. This number - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 20
Illustrated parts catalog Computer major components 3-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 21
493272-001 System board GM45 (includes RTC battery and replacement thermal material) 492152-001 GL40 (includes RTC battery and replacement thermal material) 504452-001 Plastics more Cable Kit information. 398393-002 RTC battery 449137-001 (Continued) Maintenance and Service Guide 3-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 22
■ T3400 2.16-Ghz processor ■ T3200 2.0-Ghz processor Thermal module (includes heat sink and thermal material) Battery 4-cell, 37-Wh 8-cell, 73-Wh Base enclosure (includes rubber feet) Optical drive (includes optical 493961-001 497536-001 493276-001 (Continued) 3-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 23
.11a/b/g/n WLAN module: ■ For use in Canada, the Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands, and 480985-001 the United States (Continued) Maintenance and Service Guide 3-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 24
Illustrated parts catalog Item (19) (20) Description Memory module 2048-MB 1024-MB Hard drive (includes hard drive bracket) 400-GB, 5400-rpm 320-GB, 5400-rpm 250-GB, 5400-rpm 160-GB, 5400-rpm 120-GB, 5400-rpm Cable Kit (not illustrated) Spare Part - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 25
Cable Kit Illustrated parts catalog Item Description Cable Kit: 1 Bluetooth module cable 2 Modem module cable (includes RJ-11 jack) Spare part number 493275-001 Maintenance and Service Guide 3-7 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 26
module compartment cover (includes one captive screw, secured by a C-clip) 3 ExpressCard slot bezel 4 SD Memory Card slot bezel Spare part number 506695-001 3-8 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 27
-Layer Drive DVD±RW and CD-RW Supermulti Double-Layer Drive with LightScribe Blu-ray ROM DVD±RW SuperMulti DL Drive 2 Hard drive (includes bracket) 400-GB, 5400-rpm 320-GB, 5400-rpm 250-GB, 5400-rpm 160-GB, 5400-rpm 120-GB, 5400-rpm Spare part number 493200-001 495017 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 28
part number 463958-001 490371-001 490371-031 490371-AA1 490371-201 490371-011 490371-D61 490371-AD1 490371-AB1 493277-001 3-10 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 29
Bluetooth module cable is included in the Cable Kit, spare part number 493275-001. RTC battery Broadcom 802.11b/g WLAN module for use in Afghanistan, Albania, Algeria, Andorra, Angola, MHz FSB), T9600 2.8-GHz (includes replacement thermal material) (Continued) Maintenance and Service Guide 3-11 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 30
cord for use in Korea Power cord for use in India System board, GM45 (includes RTC battery and replacement thermal material) 12.1-inch, WXGA BrightView display panel 12.1-inch, WXGA BrightView display Memory module, 1024-MB Memory module, 2048-MB (Continued) 3-12 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 31
rpm Hard drive, 320-GB, 5400-rpm DVD/CD-RW Combo Drive (includes drive bezel and bracket) Battery, 4-cell, 37-Wh Fan Thermal module (includes heat sink and thermal material) Base enclosure (includes rubber 16-Ghz (includes replacement thermal material) (Continued) Maintenance and Service Guide 3-13 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 32
, 800-MHz FSB) T5900 2.2-Ghz (includes replacement thermal material) Plastics Kit (see "Plastics Kit" on page 3-8 for more Plastics Kit spare part information) Hard drive, 400-GB, 5400-rpm 3-14 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 33
plastic parts. Apply pressure only at the points designated in the maintenance instructions. Cables and connectors Ä CAUTION: When servicing the computer, be sure that cables are placed in their proper flex cables with extreme care; these cables tear easily. Maintenance and Service Guide 4-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 34
or loss of information, observe these precautions: ■ Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer remove a component, place it in an electrostatic-safe container. 4-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 35
V 26,500 V 21,000 V Relative humidity 40% 55% 15,000 V 7,500 V 5,000 V 3,000 V 800 V 400 V 700 V 400 V 4,000 V 2,000 V 5,000 V 3,500 V 20,000 V 7,000 V 11,000 V 5,000 V Packaging and not possible, use an ionizer to dissipate electric charges. Maintenance and Service Guide 4-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 36
properly grounded work surface and use properly grounded tools and equipment. ■ Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ■ When fixtures must directly contact tabletop workstations with ground cords of one megohm resistance 4-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 37
on page 4-36). 6. Wait approximately 5 minutes. 7. Replace the RTC battery and reassemble the computer. 8. Connect AC power to the computer. Do not reinsert any batteries at this time. 9. Turn on the computer. All passwords and all CMOS settings have been cleared. Maintenance and Service Guide 4-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 38
the computer serial number to HP when requesting information or ordering specific information about the product's hardware components. The part number helps a service technician to determine what components and parts are needed. This is the number you use to locate documents, drivers, and support - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 39
the computer upside down on a flat surface, with the battery bay toward you. 2. Slide the battery release latch 1 to release the battery. 3. Remove the battery 2 from the computer. Install the battery by inserting it into the battery bay until you hear a click. Maintenance and Service Guide 4-7 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 40
include a hard drive bracket. Description 400-GB, 5400-rpm hard drive 320- in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). Remove the hard drive: 1. Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 41
drive. b. Lift the bracket 2 straight up to remove it from the hard drive. Reverse this procedure to reassemble and install the hard drive. Maintenance and Service Guide 4-9 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 42
is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). Remove the memory module: 1. Position the and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 43
angle. ✎ Memory modules are designed with a notch 3 to prevent incorrect insertion into the memory module slot. Reverse this procedure to install a memory module. Maintenance and Service Guide 4-11 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 44
.11a/b/g/n WLAN modules: ■ For use in Canada, the Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands, and the United States. 480985-001 4-12 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 45
off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). Remove the WLAN module: 1. Position the and Service Guide 4-13 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 46
off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). Remove the optical drive: 1. Position the computer and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 47
the optical drive bracket to the optical drive. c. Remove the optical drive bracket 2. Reverse this procedure to reassemble and install an optical drive. Maintenance and Service Guide 4-15 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 48
off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices and then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard drive Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 49
keyboard cable is attached, and disconnect the keyboard cable 2 from the system board. 6. Remove the keyboard. Reverse this procedure to install the keyboard. Maintenance and Service Guide 4-17 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 50
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-16) 4-18 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 51
2 is different. The rubber screw covers are included in the Plastics Kit, spare part number 493274-001. 3. Remove ten Torx T8M2.0×6.0 slotted screws. Maintenance and Service Guide 4-19 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 52
Removal and replacement procedures 4. Remove the three Phillips PM2.0×2.0BH screws in the battery bay. 5. Remove the three Phillips PM2.0×3.0 screws in the optical drive bay. 4-20 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 53
1 to release it. Move the top cover backward 2 and place it on the base enclosure. Reverse this procedure to install the top cover. Maintenance and Service Guide 4-21 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 54
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-18) 4-22 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 55
clips on the system board, and then remove the speaker assembly 3 from the base enclosure. Reverse this procedure to install the speaker assembly. Maintenance and Service Guide 4-23 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 56
Before removing the display assembly, follow these steps: 1. Shut down the computer. If you are unsure whether the computer and then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard drive ( Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 57
covers 1 at the bottom of the display assembly and peel back the two rubber bumper strips 2 at the top of the display assembly. Maintenance and Service Guide 4-25 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 58
route the cables through the side openings in the hinge covers and avoid pinching the cables between the bezel and display enclosure. 4-26 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 59
the backlight cable 2 and the display panel cable 3 from the display inverter. The display inverter is available using spare part number 493193-001. Maintenance and Service Guide 4-27 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 60
the display panel. d. Remove the display hinges 2 from the display panel. The display hinges are available using spare part number 493192-001. 4-28 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 61
the microphone cable or WLAN transceivers and cable: ✎ The microphone, WLAN antenna cable, and the LCD module cable are included in the Cable Kit, spare part number 493275-001. a. Remove the two Reverse this procedure to install the WLAN transceivers and cable. Maintenance and Service Guide 4-29 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 62
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-18) 4-30 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 63
3 so that the external audio connectors slide out of the openings in the base enclosure. Reverse this procedure to install the audio board. Maintenance and Service Guide 4-31 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 64
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-18) 4-32 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 65
high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 66
battery and replacement thermal material) GL40 (includes RTC battery and replacement thermal material) Spare part number 492152-001 504452-001 Before removing the system board, follow these steps: 1. Shut on the replacement system board: ■ RTC battery (see "RTC battery" on page 4-36) ■ Modem module - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 67
. 4. Remove the system board from the base enclosure by pulling it away at an angle 4. Reverse this procedure to install the system board. Maintenance and Service Guide 4-35 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 68
minutes causes all passwords and CMOS settings to be cleared. Description RTC battery Spare part number 449137-001 Before removing the RTC battery, follow these steps: 1. Shut down the computer. If page 4-32) i. System board (see "System board" on page 4-34) 4-36 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 69
Remove the RTC battery: 1. Turn the system board upside down with the front toward you. 2. Remove the RTC battery from the socket. Removal and replacement procedures Reverse this procedure to install the RTC battery. Maintenance and Service Guide 4-37 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 70
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-42) 4-38 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 71
. 4. Remove the modem module, cable, adhesive tape, and RJ-ll port. Reverse this procedure to install the modem module and modem module cable. Maintenance and Service Guide 4-39 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 72
or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard 4-34) 4-40 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 73
Phillips PM1.5×3.0 screws 2 that secure the Bluetooth module to the system board. 4. Remove the module 3. Reverse this procedure to install the Bluetooth module. Maintenance and Service Guide 4-41 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 74
Before removing the heat sink, follow these steps: 1. Shut down the computer. If you are unsure whether the then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard drive 4-34) 4-42 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 75
. Thermal material is included with all system board, heat sink, and processor spare part kits. Reverse this procedure to install the heat sink. Maintenance and Service Guide 4-43 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 76
496458-001 486255-001 486254-001 469459-001 490337-001 490336-001 506303-001 506307-001 506306-001 506305-001 506304-001 4-44 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 77
in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all then unplugging the AC adapter from the computer. 4. Remove the battery (see "Battery" on page 4-7). 5. Remove the following components: a. Hard page 4-42) Maintenance and Service Guide 4-45 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 78
triangle 3 on the processor must be aligned with the triangle 4 embossed on the processor slot. Reverse this procedure to install the processor. 4-46 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 79
is a ROM-based information and customization utility that can be used even when your Windows operating system is not working. The utility reports information about the computer and provides settings then press enter. Your change goes into effect immediately. Maintenance and Service Guide 5-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 80
Setup Utility Navigating and selecting in the Setup Utility Because the Setup Utility is not Windows based, it does not support the TouchPad. Navigation and selection are by keystroke. ■ To choose a menu or changed when you restore the factory default settings. 5-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 81
may not be supported by your computer. Main menu Select System information Security menu To do this ■ View and change the system time and date. ■ View identification information about the computer. ■ View specification information about the processor, memory size, system BIOS, and keyboard - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 82
Setup Utility System Configuration menu Select Language Support Button Sound (select models only) Virtualization Technology Processor C4 State (select models only) LAN Power self-test on a secondary hard drive. Run a diagnostic test on the system memory. 5-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 83
Specifications Computer specifications Metric U.S. Dimensions Length 22.6 cm 8.9 in Width 29.4 cm 11.7 in Height (front to rear) 2.8 to 3.6 cm 1.10 to 1.42 in Weight Equipped with 4-cell battery and operates well within this range of temperatures. Maintenance and Service Guide 6-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 84
55°C (41°F to 131°F) *1 GB = 1 billion bytes when referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. ✎ Certain restrictions and exclusions apply. Contact technical support for details. 6-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 85
1 and mode 2), CD-ROM XA (Mode 2, form 1 and form 2), Photo CD (Single and multiple sessions), CD Extra, CD-R, CD-RW, and CD-TEXT DVD-RAM (Ver.2), DVD+R, DVD-R, CD-R, and CD-RW BD DVD < 230 ms < 180 ms 4.5 MB 9 MB/sec 2,400 KB/sec 2,400 KB/sec 2,400 KB/sec Maintenance and Service Guide 6-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 86
Drive and DVD±RW and CD-RW SuperMulti Double-Layer Drive with LightScribe specifications Applicable disc Access time Random Cache buffer Data transfer rate 5X DVD-RAM 8X DVD±RW 8X DVD±R 16X CD-R 16X CD-RW (High Speed *PC Card controller can use DMA 1, 2, or 5. 6-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 87
specifications Specifications Hardware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-Key or Microsoft® Natural Keyboard IRQ8 System CMOS . ✎ For operating systems after Windows 2000, APIC (Advanced programming interrupt controller) is used. Maintenance and Service Guide 6-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 88
Specifications System I/O address specifications I/O address (hex) 000 - 01F 020 - 021 024 - 025 028 - 029 02C Embedded Controller Motherboard resources Motherboard resources System CMOS/real time clock Motherboard resources Direct memory Controller (Continued) 6-6 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 89
0F0- 0F0 0200-027F 3B0-3BB 3C0-3DF 400-47F 4D0-4D1 500-57F 1000-1003 1010- series Express Chipset Family ICH9M-E/M SATA AHCI Controller ICH9M-E/M SATA AHCI Controller Motherboard resources Motherboard resources Motherboard resources Motherboard resources Specifications Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 90
000C0000-000CFFFF 000E8000-000FFFFF 00100000- XFFFFFFF (X+1)0000000-FEDFFFFF FED00000-FED003FF FEE01000-FFFFFFFF System function Base memory Video memory Video BIOS System BIOS Extended memory (based on memory installed) PCI bus High precision event timer PCI bus 6-8 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 91
7 Screw listing This section provides specification and reference information for the screws used in the computer. Some screws listed in this section are available in the Screw Kit, spare part number 493277-001. Maintenance and Service Guide 7-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 92
Screw listing Phillips PM1.5×3.0 screw Color Silver Quantity 8 Length 3.0 mm Thread 1.5 mm Head diameter 3.0 mm Where used: 2 screws that secure the optical drive bracket to the optical drive 7-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 93
Screw listing Where used: 4 screws that secure the display hinges to the display panel Where used: 2 screws that secure the Bluetooth module to the system board Maintenance and Service Guide 7-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 94
Screw listing Phillips PM2.0×3.0 screw Color Silver Quantity 2 Length 3.0 mm Thread 2.0 mm Head diameter 3.0 mm Where used: 2 screws that secure the audio board to the base enclosure 7-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 95
Phillips PM2.0×4.0 screw Screw listing Color Silver Quantity 2 Length 4.0 mm Thread 2.0 Head diameter 3.5 mm Where used: 2 screws that secure the WLAN module to the system board Maintenance and Service Guide 7-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 96
screws 1 that secure the hard drive cover to the computer and 1 captive screw 2 that secures the wireless module compartment cover to the computer 7-6 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 97
optical drive bay) that secure the top cover to the computer Where used: 2 screws that secure the modem module to the system board Maintenance and Service Guide 7-7 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 98
Screw listing Phillips PM2.0×6.0 screw Color Black Quantity 2 Length 6.0 mm Thread 2.0 mm Head diameter 4.0 mm Where used: 2 screws that secure the display hinge covers to the display enclosure 7-8 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 99
used: 6 screws that secure the display panel to the display enclosure Where used: 6 screws that secure the display bezel to the display enclosure Maintenance and Service Guide 7-9 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 100
Screw listing Phillips PM2.0×7.0 captive screw Color Silver Quantity 1 Length 7.0 mm Thread 2.0 mm Head diameter 4.0 mm Where used: 1 captive screw that secures the fan to the base enclosure 7-10 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 101
Phillips PM2.0×10.0 captive screw Screw listing Color Silver Quantity 4 Length 10.0 mm Thread 2.0 Head diameter 5.0 mm Where used: 4 captive screws that secure the heat sink to the system board Maintenance and Service Guide 7-11 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 102
Screw listing Phillips PM2.5×10.0 captive screw Color Black Quantity 1 Length 10.0 mm Thread 2.5 Head diameter 5.0 mm Where used: 1 captive screw that secures the hard drive to the computer 7-12 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 103
Phillips PM3.0×3.0 screw Screw listing Color Silver Quantity 4 Length 3.0 mm Thread 3.0 Head diameter 4.5 mm Where used: 4 screws that secure the hard drive bracket to the hard drive Maintenance and Service Guide 7-13 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 104
Screw listing Phillips PM3.0×4.0 screw Color Silver Quantity 1 Length 4.0 mm Thread 3.0 Head diameter 4.5 mm Where used: 1 screw that secures the speaker assembly to the base enclosure 7-14 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 105
Phillips T2.0×2.0BH screw Screw listing Color Black Quantity 3 Length 2.0 mm Thread 2.0 Head diameter 6.0 mm Where used: 3 screws (in the battery bay) that secure the top cover to the base enclosure Maintenance and Service Guide 7-15 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 106
Screw listing Torx T8M2.5×6.0 slotted screw Color Black Quantity 21 Length 6.0 mm Thread 2.5 mm Head diameter 4.0 mm Where used: 1 screw that secures the optical drive to the computer Where used: 3 screws that secure the keyboard to the computer 7-16 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 107
Screw listing Where used: 2 screws that secure the top cover to the base enclosure (top) Where used: 4 screws that secure the display assembly hinges to the computer Maintenance and Service Guide 7-17 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 108
Screw listing Where used: 1 screw that secures the system board to the base enclosure Where used: 10 screws that secure the top cover to the base enclosure 7-18 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 109
program or driver (Recovery Manager software feature). This feature helps you reinstall a program or driver without performing is present, an HP Recovery drive is listed in the Hard Disk Drives section of the window. Creating recovery discs ✎ HP recommends that you create Service Guide 8-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 110
battery power, you will be prompted to connect to AC power before you can go to the next step. 3. Click Recovery disc creation, and then click Next. 4. Follow the on-screen instructions. Backing up your information With HP Windows in a window, toolbar, copy only the active window, press alt+fn+prt - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 111
system restore point allows you to save and name a snapshot of your hard drive at a specific point in time. You can then recover back to that point if you want to reverse , and then click Next. The System Restore window opens. 5. Follow the on-screen instructions. Maintenance and Service Guide 8-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 112
only files that you have previously backed up. HP recommends that you use Recovery Manager to create system and software. ✎ Windows has its own built-in repair features, such as System Restore and driver roll-back capabilities. If Follow the on-screen instructions. 8-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 113
Audio-out (headphone) 9 Connector pin assignments Pin 1 2 3 Audio-in (microphone) Signal Audio out, left channel Audio out, right channel Ground Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Maintenance and Service Guide 9-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 114
analog 8 Ground analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 9-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 115
) data clockConsumer electronics control (CEC) Not connected Display data channel (DDC) clock Display data channel (DDC) data Ground +5V Power Hot plug detect Maintenance and Service Guide 9-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 116
Connector pin assignments RJ-11 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused 9-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 117
RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused Connector pin assignments Maintenance and Service Guide 9-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 118
Connector pin assignments Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground 9-6 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 119
of an EN 60 320/IEC 320 Standard Sheet C13 connector for mating with the appliance inlet on the back of the computer. Maintenance and Service Guide 10-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 120
Power cord set requirements Requirements for specific countries and regions Country/region Accredited agency Accredited agency Applicable note number Australia EANSW 1 Austria OVE 1 Belgium evaluation in the country or region where it will be used. 10-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 121
liquid crystal display (LCD) panel 2. ✎ The procedures provided in this chapter are general disassembly instructions. Specific details, such as screw sizes, quantities, and locations, and component shapes and sizes, can vary from one computer model to another. Maintenance and Service Guide 11-1 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 122
the top and bottom inside edges 2 of the display bezel until the bezel disengages from the display assembly. 3. Remove the display bezel 3. 11-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 123
the display enclosure. 7. Turn the display panel assembly upside down. 8. Remove all screws that secure the display panel frame to the display panel. Maintenance and Service Guide 11-3 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 124
backlight cover. 14. Turn the display panel right-side up. 15. Remove the backlight cables 1 from the clip 2 in the display panel. 11-4 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 125
and handling the backlight to avoid damaging this component and causing exposure to the mercury. 18. Remove the backlight from the backlight frame. Maintenance and Service Guide 11-5 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 126
screws 2 that secure the LCD panel to the display rear panel. 21. Release the LCD panel 3 from the display rear panel. 22. Release the tape 4 that secures the LCD panel to the display rear panel. 23. Remove the LCD panel. 24. Recycle the LCD panel and backlight. 11-6 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 127
6-3 Blu-ray ROM DVD±RW SuperMulti DL Drive removal 4-14 spare part number 3-4, 3-13, 4-14 specifications 6-3 boot options 5-4 Maintenance and Service Guide Index boot order 5-4 bottom components 2-8 built-in device Bluetooth device radio 2-5 modem 4-38 wireless button 2-3 WLAN device - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 128
with LightScribe removal 4-14 spare part number 3-4, 3-13, 4-14 specifications 6-4 E electrostatic discharge 4-2 esc key 2-4 Ethernet, product description 4-28 spare part number 3-3, 3-12, 4-28 I I/O address specifications 6-6 interrupt specifications 6-5 Index-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 129
mass storage devices, spare part numbers 3-9 Media button 2-3 memory map specifications 6-8 memory module product description 1-2 removal 4-10 spare part numbers 3-6, 3-11, 3-12, 4-10 Maintenance and Service Guide Index microphone location 2-1 product description 1-2 microphone cable removal 4-29 - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 130
9-5 RTC battery removal 4-37 BIOS administrator password 5-3 Power-On password 5-3 security, product description 1-3 serial number 3-1, 4-6 service considerations 4-1 service tag 3-1, 4-6 serviceability specifications Blu-ray ROM DVD±RW SuperMulti DL Drive 6-3 display 6-2 Maintenance and Service Guide - Compaq Presario CQ20-400 | Compaq Presario CQ20 Notebook PC - Maintenance and Se - Page 131
removal 4-27 spare part number 3-12 Index webcam light 2-1 Windows application key 2-4 Windows logo key 2-4 wireless antenna disconnecting 4-13 location 2-1 product description 4-29 WLAN module compartment 2-8 WLAN module compartment cover illustrated 3-3, 3-8 Maintenance and Service Guide Index-5
b
Compaq Presario CQ20 Notebook PC
Maintenance and Service Guide
Document Part Number: 482402-002
October 2008
This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides
comprehensive information on identifying computer features, components, and spare parts; troubleshooting
computer problems; and performing computer disassembly procedures.