Instruction/ maintenance manual of the product CQ20 Compaq
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b Compaq Pr esario CQ20 Notebook P C Maintenance and Se rvi ce Guide Doc ument P art Number : 48 2 4 02 -00 2 October 2008 This guide is a troubleshooting reference used for ma intaining and servicing the computer .
© Copyright 2008 He wlett-Packard Dev elopment Company , L.P . Bluetooth is a trademark owned b y its proprietor and used by He wlett-P ackard Company under license. Intel, Core, and Celeron ar e trademarks or registered trademarks of In tel Corporation or its subsidiaries in the United States and other countries.
Safety warning notice Å WA R N I N G : T o r educe the pos sibility of heat-re lated injur ies or of o verheating the computer , do no t place the compu ter dir ectly on you r l ap o r o bst ru ct t he co mpu te r a ir vent s. U se t he co mp ute r o nly on a h ard, fla t s ur fa ce.
Maintenance and Se rvi ce Guide iv Cont ent s 1 Product description 2 External component identification Top components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v Maintenance and Serv ice Guide Cont ents Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–32 System board . . . . . . . . . . . . . . . . .
Cont ents Maintenance and Se rvi ce Guide vi 8 Backup and recovery Creating recovery discs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1 Backing up your information .
Maintenance and Se rvi ce Guide 1–1 1 Pr oduc t desc r iption Category Description Models with GL40 system board Models with GM45 system board Product Name Compaq Presario CQ20 Notebook PC XX Processor s Intel® Core™2 Duo processor s: T9600 2.8-GHz processor , 6-MB L2 cache, 1066-MHz front side bus (FSB) X T9400 2.
1–2 Maintenance and Serv ice Guide Produc t descr iption Memory 2 customer-accessible/upgr adable memory module slots X X Suppor ts dual-channel memory X X Suppor ts up to 4 GB of system RAM X X PC2.
Pr oduct desc ription Maintenance and Se rvi ce Guide 1–3 Ethernet Intel Broadcom 88E8072 10/1 00/1000 network interface card (NIC) XX Ethernet cable included X X Wireless Integrated WLAN options by.
1–4 Maintenance and Serv ice Guide Produc t descr iption Operating system Preinstalled: Windows Vista® Home Basic 32 with Office 2007 Ready X X Windows Vista Business 32 with Office 2007 Ready X X .
Maintenance and Se rvi ce Guide 2–1 2 External component identification T op components Displa y components Item Component Description 1 Wireless antennae (2) (select models only) Send and receive signals from one or more wireless de vices. ✎ The antennae are not visible from the outside of the computer.
2–2 Maintenance and Serv ice Guide Extern al componen t identif ication To u c h Pa d Item Component Function 1 T ouchPad* Mov es the pointer and select s or activates items on the screen. 2 Left T ouchPad b utton* Functions like th e left b utton on an e x ternal mouse.
External component identification Maintenance and Se rvi ce Guide 2–3 Buttons Item Component Description 1 Po we r b u t t o n ■ When the computer is off, press the button to turn on the computer . ■ When the computer is on, press th e button to shut do wn the system.
2–4 Maintenance and Serv ice Guide Extern al componen t identif ication Keys Item Component Function 1 esc ke y Displa ys system inf ormation when pressed in comb ination with the fn key . 2 fn k ey Ex ecutes frequently used system fu nctions when pressed in combination with a function ke y or the esc key .
External component identification Maintenance and Se rvi ce Guide 2–5 Lights Item Component Description 1 Caps lock light On: Caps lock is on. 2 Batter y light (beside po wer connector) ■ Amber: A batter y is charging. ■ Green: A battery is close to full charge capacity .
2–6 Maintenance and Serv ice Guide Extern al componen t identif ication Fr ont components Left-side components Item Component Description 1 Drive light ■ Blinking g reen: The hard drive or optical drive is being accessed. ■ Amber : (select models only) HP 3D Dr iveGaurd has tempor ar ily parked the hard drive.
External component identification Maintenance and Se rvi ce Guide 2–7 Right-side components Item Component Function 1 ExpressCard slot (select models on ly) Suppor ts optional ExpressCards.
2–8 Maintenance and Serv ice Guide Extern al componen t identif ication Bottom components Item Component Function 1 V ents (3) Enables airflo w to cool inter nal components. ✎ The computer fan starts up automati cally to cool internal components and prevent overheating.
Maintenance and Se rvi ce Guide 3–1 3 Illustrated parts catalog Serial number location When ordering parts or requesting information, provid e the computer serial number and model number located on the bottom of the computer . Item Component Description 1 Product name This is the product name affix ed to the front of your computer .
3–2 Maintenance and Serv ice Guide Illustr ated parts catalog Computer major components.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–3 Item Description Spare P art Number (1) Display assemb ly (includes 2 WLAN antenna tr ansceiv ers and cables , nameplate, and logo) 12.1-inch, WXGA BrightView displa y assembly with w ebcam 492154-001 Display internal components (not illustrated) 12.
3–4 Maintenance and Serv ice Guide Illustr ated parts catalog (12) Fan 493269-001 (13) Processor (includes replacement thermal material) Intel Core2 Duo processor s (6-MB L2 cache, 1066-MHz FSB) : ■ T9600 2.8-GHz processor 486257-001 ■ T9400 2.53-GHz processor 486256-001 ■ P9500 2.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–5 (18) WLAN module Broadcom 802.11a/b/g/n WLAN module: ■ F or use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbud.
3–6 Maintenance and Serv ice Guide Illustr ated parts catalog (19) Memory module 2048-MB 493195-001 1024-MB 493194-001 (20) Hard drive (includes hard drive br ack et) 400-GB, 5400-rpm 512573-001 320.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–7 Cable Kit Item Description Spare part number Cable Kit: 493275-001 1 Bluetooth module cable 2 Modem module cable (includes RJ-11 jac k).
3–8 Maintenance and Serv ice Guide Illustr ated parts catalog P lastic s Kit Item Description Spare part number Plastics Kit: 506695-001 1 Hard drive cov er (includes one captive scre w , secured by.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–9 Mass storage d e vices Item Description Spare part number 1 Optical drive (includes bezel) D VD/CD-R W Combo Dr iv e 493200-001 D VD±R.
3–1 0 Maintenance and Service Gui de Illustr ated parts catalog Miscellan eous parts Description Spare part number 65-W A C adapter 463958-001 Pow e r c or d s: F or use in Nor th America 490371-001.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–1 1 Sequential part number listing Spare part number Description 398393-002 Bluetooth module ✎ The Bluetooth module spare part kit does not in clude a Bluetooth module cable. The Bluetooth module cable is included in the Cable Kit, spare part number 493275-001.
3–1 2 Maintenance and S ervi ce Guide Illustr ated parts catalog 487330-002 Broadcom 802.11a/b/g/n WLAN module f or use in Afghanistan, Albania , Algeria, Andorra, Angola, Antigua and Barbuda, Argen.
Illustr ated parts catalog Maintenance and Se rvi ce Guide 3–1 3 493196-001 Hard drive, 120-GB , 5400-r pm 493197-001 Hard drive, 160-GB , 5400-r pm 493198-001 Hard drive, 250-GB , 5400-r pm 493199-.
3–1 4 Maint enance and Serv ice Guide Illustr ated parts catalog 506306-001 Intel Core Duo processor (2-MB L2 cache, 800-MHz FSB) T5800 2.0-Ghz (includes replacement thermal mater ial) 506307-001 Intel Core Duo processor (2-MB L2 cache, 800-MHz FSB) T5900 2.
Maintenance and Se rvi ce Guide 4–1 4 Remo v a l and r eplacement procedur es Preliminary r eplacement requir em ents To o l s r e q u i r e d Y ou will need the follo wing tools to complete the rem.
4–2 Maintenance and Serv ice Guide Remo val and r eplacement procedur es Dri ve handling Ä CAUT ION: Dri ves ar e fragile co mponents that mu st be handled wi th car e.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 The follo wing table sho ws ho w humidity affects the electrost atic voltage le vels generated by dif ferent activities. Ä CAUT ION: A produc t can be degr aded by a s little as 7 00 V .
4–4 Maintenance and Serv ice Guide Remo val and r eplacement procedur es W orkstation guidelines Follo w these grounding workstation guidelines: ■ Cov er the workstation with approved static-shielding material. ■ Use a wrist strap connected to a properly grounded work surf ace and use properly grounded tools and equipment.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–5 ■ Static-dissipati ve tables or floor mats with hard ties to the ground ■ Field service kits ■ Static aw areness lab.
4–6 Maintenance and Serv ice Guide Remo val and r eplacement procedur es Component replacement pr ocedures This chapter provides remo val and replacement procedures. There are as many as 71 scre ws, in 14 di fferent sizes, that must be remo ved, replaced, or loosened when servicing the computer .
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–7 Computer feet The computer feet are adhesi ve-back ed rubber pads. The f eet are included in the Rubber Kit, spare part number 493274-001. There are 5 rubber feet that attach to th e base enclosure in the locations illustrated belo w .
4–8 Maintenance and Serv ice Guide Remo val and r eplacement procedur es Har d dr i ve ✎ All hard dri ve spare part kits include a hard dri ve bracket.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–9 4. Loosen the Phillips PM2.5×10.0 capti ve scre w 1 that secures the hard driv e to the computer . 5. Grasp the Mylar tab 2 on the hard dri ve and slide the hard dri ve 3 a way from the hard driv e connector .
4–1 0 Maintenance and Service Gui de Remo val and r eplacement procedur es Memor y module Before removing the memory module, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–1 1 ✎ The top memory module slot is for extension memo ry and the bottom slot is for primary memory . 4. Spread the retaining tabs 1 on each side of the memory module to release the memory module.
4–1 2 Maintenance and S ervi ce Guide Remo val and r eplacement procedur es WLAN modul e Ä CAUT ION: The WLAN module and the WW AN module ar e not inte r changeable .
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–1 3 Before removing the WLAN module, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the com puter is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
4–1 4 Maint enance and Serv ice Guide Remo val and r eplacement procedur es Optical dri v e ✎ All optical dri ve spare part kits include an optical dri ve bezel and bracket. Before removing the optical dri ve, follo w these steps: 1. Shut do wn the computer .
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–1 5 5. If it is necessary to replace the optical dri ve brack et, follo w these steps: a. Position the optical dri ve with the rear to ward you. b . Remo ve the two Phillips PM1.
4–1 6 Maintenance and Service Gui de Remo val and r eplacement procedur es Keyb o a rd Before removing the k eyboard, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–1 7 3. T urn the computer display-side up, and open the computer . 4. Lift the rear edge of the ke yboard 1 and rotate the ke yboard to ward you 2 until it rests upside do wn on the top cove r .
4–1 8 Maintenance and Service Gui de Remo val and r eplacement procedur es To p c o v e r Before removing the top co ver , follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–1 9 Remov e the top cover: 1. Close the computer and turn it upside do wn, with the front to ward you. 2. Remov e the following: Remov e four rubber screw cov ers on the front of the co mputer .
4–20 Maintenance and Serv ice Guide Remo val and r eplacement procedur es 4. Remov e the three Phillips PM2.0×2.0BH screws in the battery bay . 5. Remov e the three Phillips PM2.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–2 1 6. T urn the computer right-side up, with the front to ward you. 7. Open the LED board cable ZIF connector 1 , and then disconnect the cable. 8. Open the T ouchPad cable ZIF connector 2 , and then disconnect the cable.
4–2 2 Maintenance and Service Gui de Remo val and r eplacement procedur es Speak er assembl y Before removing the speak er assembly , follow these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–2 3 Remov e the speaker assembly: 1. Disconnect the speaker assembly cable 1 from the system board. 2. Remov e the Phillips PM3.0×4.0 screw 2 that attaches the left speaker to the base enclosure.
4–2 4 Maintenance and Serv ice Guide Remo val and r eplacement procedur es Displa y assembly Before removing the display assembly , follow these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–2 5 5. Remov e the four T orx T8M2.0×6.0 scre ws 1 that secure the display assembly to the computer . Be sure to hold the display before removing the last scre w to prev ent damage to the display .
4–2 6 Maintenance and Servi ce Guide Remo val and r eplacement procedur es b . Remo ve the two PM2.0×5.0 scre ws 1 and two PM3.0×6.0 2 scre ws that secure the display bezel to the display enclosure.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–2 7 2. T o remov e the webcam module: a. Disconnect the webcam cable 1 from the computer . b . Remo ve the webcam module 2 from the display enclosure. (T he webcam is secured with double-sided tape.
4–2 8 Maintenance and Service Gui de Remo val and r eplacement procedur es 4. T o remov e the display panel: a. Remov e the six Phillips PM2.0×5.0 screws 1 that secure the display panel to the display enclosure. b . Remo ve the display panel 2 from the display enclosure.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–2 9 5. T o remov e the microphone cable or WLAN transcei vers and cable: ✎ The microphone, WLAN antenna cable, and the LCD module cable are included in the Cable Kit, spare part number 493275-001.
4–30 Maintenance and S ervi ce Guide Remo val and r eplacement procedur es Audio boar d Before removing the audio board, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 1 Remov e the audio board and cable: 1. Open the audio board cable ZIF connector 1 , and then remov e the cable from the system board. 2. Remov e the two Phillips PM2.0×3.0 screws 2 that secure the audio board to the system board.
4–3 2 Maintenance and Servi c e Gui de Remo val and r eplacement procedur es Fa n Before removing the f an, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 3 Remov e the fan: 1. Disconnect the fan cable 1 from the system board. 2. Loosen the capti ve Phillips PM2.0×7.0 scre w 2 that secures the fan to the base enclosure, and then remov e the fan 3 from the heat sink.
4–34 Mainte nance and Servi ce Guide Remo val and r eplacement procedur es S ystem boar d Before removing the system board, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 5 Remov e the system board: 1. Remov e the T orx T8M2.0×6.0 scre w that secures the syst em board to the base enclosure. The screw is located beside the optical dri ve connector .
4–3 6 Maintenance and Service Guid e Remo val and r eplacement procedur es RT C ba tt er y ✎ Removing the R TC battery and leaving it uninstalled for 5 or more minutes causes all passwords and CMOS settings to be cleared. Before removing the R TC battery , follo w these steps: 1.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 7 Remov e the R TC battery: 1. T urn the system board upside down with the front to ward you. 2. Remov e the R TC battery from the socket. Re verse this procedure to install the R TC battery .
4–38 Maint enance and Servi ce Guide Remo val and r eplacement procedur es Modem m odule Before removing the modem module, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–3 9 Remov e the modem module: 1. T urn the system board upside down with the rear edge to ward you. 2. Remov e the two Phillips PM2.0×3.0 screws 1 that secure the modem module to the system board.
4–40 Maintenance and S ervi ce Guide Remo val and r eplacement procedur es Bluetooth module Before removing the Bluetooth module, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–4 1 Remov e the Bluetooth module: 1. T urn the system board upside down, with the front to ward you. 2. Disconnect the Bluetooth module cable 1 from the system board. 3. Remov e the two Phillips PM1.
4–4 2 Maintenance and Servi ce Guide Remo val and r eplacement procedur es Heat sink Before removing the heat sink, follo w these steps: 1. Shut do wn the computer . If you are unsure whether the computer is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–4 3 Remov e the heat sink: 1. Loosen the four Phillips PM2.0×10.0 capti ve scre ws 1 that secure the heat sink to the system board. 2. Remov e the heat sink 2 by lifting it straight up.
4–44 Maintenance and Serv ice Guide Remo val and r eplacement procedur es Processor ✎ All processor spare part kits include replacement thermal material. Description Spare part number Intel Core2 Duo processor s (6-MB L2 cache, 1066-MHz FSB): ■ T9600 2.
Remo val and r e placeme nt pr ocedures Maintenance and Se rvi ce Guide 4–4 5 Before removing the processor , follo w these steps: 1. Shut do wn the computer . If you are unsure whether the com puter is of f or in Hibernation, turn the computer on, and then shut it do wn through the operating system.
4–46 Mainte nance and Servi ce Guide Remo val and r eplacement procedur es Remov e the processor: 1. Use a flat-bladed screwdri ver to turn the processor locking scre w 1 one-half turn counterclockwise until you hear a click. 2. Lift the processor 2 straight up and remo ve it.
Maintenance and Se rvi ce Guide 5–1 5 Setup Utility The Setup Utility is a R OM-based information and customiz ation utility that can be used ev en when your Windo ws operating system is not working. The utility reports information about the computer and provid es settings for startup, security , and other preferences.
5–2 Maintenance and Serv ice Guide Setup Uti lity Nav igating and selec ting in the Setup Utilit y Because the Setup Utility is not W indows based, it doe s not support the T ouchPad. Navig ation and selection are by k eystrok e. ■ T o choose a menu or a menu item, use the arrow k eys.
Setup Ut ility Maintenance and Se rvi ce Guide 5–3 Ex iting the Setup Utilit y Y ou can exit the Setup Utility with or without saving changes. ■ T o exit the Setup Utility and sa ve your changes from the current session: If the Setup Utility menus are not visible, press esc to return to the menu display .
5–4 Maintenance and Serv ice Guide Setup Uti lity S ystem Configur ation menu Diagnostics menu Select T o do this Language Suppor t Change th e Setup Utility language. Button Sound (select models only) Enable/disa b le the capacitive button tapping sound.
Maintenance and Se rvi ce Guide 6–1 6 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 W eight Equipped with 4-cell battery and optical dr iv e 1.
6–2 Maintenance and Serv ice Guide Spe c i ficat ions 1 2. 1 -inch, WX G A displa y specifications Hard dri ve specifications Metric U .S. Dimensions Height 16.9 cm 6.7 in Width 26.2 cm 10.3 in Diagonal 30.8 cm 12.1 in Number of colors Up to 16.8 million Contrast ratio 250:1 (typical) Brightness 180 nits (typical) Pixel resolution Pitch 0.
Spe c i ficat ions Maintenance and Se rvi ce Guide 6–3 D VD/CD-R W Combo Dri ve specifications Blu-ra y ROM D VD ± R W SuperMulti DL Dri ve specifications Applicable disc Read: Write: CD-D A, CD+(E.
6–4 Maintenance and Serv ice Guide Spe c i ficat ions DV D ± RW and CD-R W SuperMulti Double -La yer Dri ve and D VD ± R W and CD-R W SuperM ulti Double -L a yer Dri ve with L ightSc r ibe spec if.
Spe c i ficat ions Maintenance and Se rvi ce Guide 6–5 S ystem inter rupt spec ifications Hard ware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-K ey or Microsoft® Natural K eyboard.
6–6 Maintenance and Serv ice Guide Spe c i ficat ions S ystem I/O addr ess specifications I/O address (hex) System function (shipping configuration) 000 - 01F DMA controller 020 - 021 Program interr.
Spe c i ficat ions Maintenance and Se rvi ce Guide 6–7 0C0- 0DF Direct memo r y access controller 0F0- 0F0 Numeric data processor 0200-027F Motherboard resource 3B0-3BB Mobile Intel 4 series Express.
6–8 Maintenance and Serv ice Guide Spe c i ficat ions S y stem memory map spec ifications Size Memory address System function 640 KB 00000000-0009FFFF Base memor y 128 KB 000A0000-000BFFFF Video mem.
Maintenance and Se rvi ce Guide 7–1 7 Scre w listing This section provides specif ication and reference informa tion for the screws used in the computer . Some screws listed in this section are av ailable in the Screw Kit, spare part number 493277-001.
7–2 Maintenance and Serv ice Guide Scr ew listi ng Phillips P M1 . 5×3 . 0 sc re w Where used: 2 scre ws that secure the optical driv e bracket to the optical driv e Color Quantity Length Thread Head diameter Silver 8 3.
Scr ew listin g Maintenance and Se rvi ce Guide 7–3 Where used: 4 scre ws that secure the disp lay hinges to the display panel Where used: 2 scre ws that secure the Bluetooth module to the system bo.
7–4 Maintenance and Serv ice Guide Scr ew listi ng Phillips P M2. 0×3. 0 sc re w Where used: 2 scre ws that secure the audio board to the base enclosure Color Quantity Length Thread Head diameter Silver 2 3.
Scr ew listin g Maintenance and Se rvi ce Guide 7–5 Phillips P M2. 0×4.0 scre w Where used: 2 scre ws that secure the WL AN module to the system board Color Quantity Length Thread Head diameter Silver 2 4.
7–6 Maintenance and Serv ice Guide Scr ew listi ng Phillips P M2. 0×5. 0 captiv e scre w Where used: 4 capti ve scre ws 1 that secure the hard driv e cov er to the computer and 1 captiv e scre w 2 that secures the wireless module compartment cov er to the computer Color Quantity Length Thread Head diameter Black 5 5.
Scr ew listin g Maintenance and Se rvi ce Guide 7–7 Phillips P M2. 0×3. 0 sc re w Where used: 3 scre ws (in optical driv e bay) that secure the top cover to the computer Where used: 2 scre ws that secure the m odem module to the system board Color Quantity Length Thread Head diameter Black 5 3.
7–8 Maintenance and Serv ice Guide Scr ew listi ng Phillips P M2. 0×6. 0 scre w Where used: 2 scre ws that secure the display hi nge cov ers to the display enclosure Color Quantity Length Thread Head diameter Black 2 6.
Scr ew listin g Maintenance and Se rvi ce Guide 7–9 Phillips P M2. 0×5. 0 sc r ew Where used: 6 scre ws that secure the displa y panel to the display enclosure Where used: 6 scre ws that secure the displa y bezel to the display enclosure Color Quantity Length Thread Head diameter Silver 12 5.
7–1 0 Maintenance and Service Gui de Scr ew listi ng Phillips P M2. 0×7 . 0 capti ve screw Where used: 1 capti ve scre w that secures the fan to the base enclosure Color Quantity Length Thread Head diameter Silver 1 7.
Scr ew listin g Maintenance and Se rvi ce Guide 7–1 1 Phillips P M2. 0×1 0.0 capti ve scre w Where used: 4 capti ve scre ws that secure the heat sink to the system board Color Quantity Length Thread Head diameter Silver 4 10.
7–1 2 Maintenance and Servi ce Guide Scr ew listi ng Phillips P M2.5×1 0. 0 captiv e sc re w Where used: 1 capti ve scre w that secures the hard driv e to the computer Color Quantity Length Thread Head diameter Black 1 10.
Scr ew listin g Maintenance and Se rvi ce Guide 7–1 3 Phillips P M3. 0×3. 0 sc r e w Where used: 4 scre ws that secure the hard driv e bracket to the hard driv e Color Quantity Length Thread Head diameter Silver 4 3.
7–1 4 Maintenance and Servi ce Guide Scr ew listi ng Phillips P M3. 0×4.0 scre w Where used: 1 scre w that secures the speaker assembly to the base enclosure Color Quantity Length Thread Head diameter Silver 1 4.
Scr ew listin g Maintenance and Se rvi ce Guide 7–1 5 P hi l l ip s T 2.0 ×2 .0B H sc re w Where used: 3 scre ws (in the battery bay) that secu re the top cove r to the base enclosure Color Quantity Length Thread Head diameter Black 3 2.0 mm 2.0 6.
7–1 6 Maintenance and Service Gui de Scr ew listi ng T or x T8M2 .5×6 .0 slotted sc r ew Where used: 1 scre w that secures the optical driv e to the computer Where used: 3 scre ws that secure the keyboard to the computer Color Quantity Length Thread Head diameter Black 21 6.
Scr ew listin g Maintenance and Se rvi ce Guide 7–1 7 Where used: 2 scre ws that secure the top cov er to the base enclosure (top) Where used: 4 scre ws that secure the display assembly hinges to th.
7–1 8 Maintenance and Service Gui de Scr ew listi ng Where used: 1 scre w that secures the system board to the base enclosure Where used: 10 scre ws that secure the top cover to the base enclosure.
Maintenance and Se rvi ce Guide 8–1 8 Bac k up and reco v er y Recov ery after a system failure is as complete as your most current backup. HP recommends that you create recov ery discs immediately after software setup.
8–2 Maintenance and Serv ice Guide Back up and r eco ve ry ■ Only one set of recov ery discs can be created per computer . ■ Number each disc before inserting it into the computer optical dri ve. ■ If necessary , you can exit the program before you hav e fi nished creating the recovery discs.
Back up and reco very Maintenance and Se rvi ce Guide 8–3 Using s ystem r estor e points When you back up your system, you are creating a system re store point. A system restore point allo ws you to sa ve and name a snapshot of your hard dri ve at a specif ic point in time.
8–4 Maintenance and Serv ice Guide Back up and r eco ve ry P er f orming a reco very ✎ Y ou can recover only f iles that you hav e previously ba cked up. HP recommends that you use Reco very Manager to create an entire dri ve backup as soon as you set up your computer .
Maintenance and Se rvi ce Guide 9–1 9 Connec tor pin assignments Audio-out (h eadphone) Audio-in (mic r ophone) Pin Signal 1 A udio out, left channel 2 A udio out, right channel 3 Ground Pin Signal .
9–2 Maintenance and Serv ice Guide Connec tor pin as signments External monitor Pin Signal 1 Red analog 2 Green analog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground analog 8 Ground.
Connec tor pin as signments Maintenance and Se rvi ce Guide 9–3 HDM I Pin Signal 1 T ransition minimized diff eren tial signal (TDMS) data 2+ 2 T ransition minimized diff erential signal (TDMS) data.
9–4 Maintenance and Serv ice Guide Connec tor pin as signments RJ- 1 1 (modem) Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused.
Connec tor pin as signments Maintenance and Se rvi ce Guide 9–5 RJ- 4 5 (net w ork) Pin Signal 1 T ransmit + 2 T ransmit 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused.
9–6 Maintenance and Serv ice Guide Connec tor pin as signments Univ ersal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground.
Maintenance and Se rvi ce Guide 10 – 1 10 P o wer cor d set requir em ents The wide range input feature of the co mputer permits it to operate from any line voltage from 100 to 120 v olts A C or from 220 to 240 volts A C.
10 – 2 Maintenance and Serv ice Guide P owe r c ord se t re qu irem en ts Requir ements for specific countries and r egions Country/region Accredited agency Accredited agency Applicable note number .
Maintenance and Se rvi ce Guide 11 – 1 11 Rec y c l in g Batter y When a battery has reached the end of its useful life, do not dispose of th e battery in general household waste. Follo w the local laws and regulations in your area for computer battery disposal.
11 – 2 Maintenance and S ervi ce Guide Recycl in g Perform the follo wing steps to disassemble the display assembly: 1. Remov e all screw cov ers 1 and screws 2 that secure the display b ezel to the display assembly .
Recycl in g Maintenance and Se rvi ce Guide 11 – 3 4. Disconnect all display panel cables 1 from the display in verter and remov e the inv erter 2 . 5. Remov e all screws 1 that secure the display panel a ssembly to the display enclosure. 6. Remov e the display panel assembly 2 from the display enclosure.
11 – 4 Maintenance and S ervi ce Guide Recycl in g 9. Use a sharp-edged tool to cut the tape 1 that secures the sides of the disp lay panel to the display panel frame. 10. Remov e the display panel frame 2 from the display panel. 11. Remov e the screws 1 that secure the backlight cov er to the display panel.
Recycl in g Maintenance and Se rvi ce Guide 11 – 5 16. T urn the display panel upside down. 17. Remov e the backlight frame from the display panel. Å WA R N I N G : The backlight contains mercury . Exer cise caution when remo ving and handling the bac klight to a voi d damaging this component and ca using e xposure to the me r cury .
11 – 6 Maintenance and S ervi ce Guide Recycl in g 19. Disconnect the display panel cable 1 from the LCD panel. 20. Remov e the screws 2 that secure the LCD panel to the display rear panel. 21. Release the LCD panel 3 from the display rear panel. 22.
Maintenance and Se rvi ce Guide Index–1 Inde x A AC adapter, spare part number 3–10 , 3–11 antenna components 1–3 , 2–1 disconnecting 4–13 locations 2–1 spare part number 3–3 , 3–12 .
Inde x–2 Maintenance and Serv ice Guide Index D Diagnostics menu 5–4 Digital Media Slot 2–7 display assembly removal 4–24 spare part number 3–3 , 3–12 , 4–24 display bezel removal 4–25.
Inde x Maintenance and Se rvi ce Guide Index–3 J jacks audio-in 2–6 audio-out 2–6 headphone 2–6 microphone 2–6 modem 2–6 network 2–6 RJ-11 2–6 RJ-45 2–6 K key components 2–4 keyboa.
Inde x–4 Maintenance and Serv ice Guide Index plastic parts 4–1 Plastics Kit contents 3–8 spare part number 3–3 , 3–14 ports external monitor 2–7 HDMI 2–7 product description 1–3 USB 2.
Inde x Maintenance and Se rvi ce Guide Index–5 DVD/CD-RW Combo Drive 6–3 DVD±RW and CD-RW SuperMulti Double-Layer Drive 6–4 DVD±RW and CD-RW SuperMulti Double-Layer Drive with LightScribe 6–.
An important point after buying a device Compaq CQ20 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Compaq CQ20 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Compaq CQ20 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Compaq CQ20 you will learn all the available features of the product, as well as information on its operation. The information that you get Compaq CQ20 will certainly help you make a decision on the purchase.
If you already are a holder of Compaq CQ20, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Compaq CQ20.
However, one of the most important roles played by the user manual is to help in solving problems with Compaq CQ20. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Compaq CQ20 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
