Instruction/ maintenance manual of the product CQ56 Compaq
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Compaq Presario CQ56 Notebook PC and HP G56 Notebook PC Maintenance and Service Guide SUMMARY This guide is a troublesh ooting reference us ed for maintaining an d servicing the comput er.
© Copyright 2010 Hew lett-Packard Development Company, L.P. AMD, ATI, and Athlon are trademar ks of Advanced Micro Devices, Inc. Bluetooth is a trademark owned by its proprietor and used by Hewlett-Packard Company under license. Intel, Celeron, and Pentium are trademarks of Intel corporation in the U.
Safety warning notice WARNING! To reduce the possibility of heat-related inju ries or of ove rheating th e computer, do not place the compu ter directly on your lap or o bstruct the computer ai r vents.
iv Safety warning no tice.
Table of contents 1 Product description ............ ......... ........... ........... ........ ............ ........... ........ ............ ......... . ................ ......... ....... 1 2 External component id enti fication ...... ........... ..
Packaging and transporting guidelines ........ ........... .......... ........ ........ 32 Works tation guideline s ..................................................................... 32 Equipmen t guidelines .................... ...................
DVD±RW SuperMulti Double-Layer Driv e with LightScribe specifications ......... ............. ............. ...... 85 7 Backup and recovery .................... ................. ............... ............. ................. ............... .......
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1 Product description Category Description HP G56 Compaq Presario CQ56 HP G56 Compaq Presario CQ56 AMD AMD Intel Intel Product name Compaq Presario CQ56 N otebook PC √ √ HP G56 Notebook PC √ √ Processors Intel Mobile Celeron 925 processor (2.3 GHz, 1-MB L3 cache, 800 MHz) √√ Intel® Celeron® 900 processor (2.
Category Description HP G56 Compaq Presario CQ56 HP G56 Compaq Presario CQ56 AMD AMD Intel Intel Chipset ATI™ RS880M √√ Southbridge - SB820 √√ Intel® GL40 √√ Southbridge - ICH9m √√ .
Category Description HP G56 Compaq Presario CQ56 HP G56 Compaq Presario CQ56 AMD AMD Intel Intel Optical drives 12.7-mm (0.5-in) fixed SATA tray load √√ √ √ DVD±RW SuperMulti Double-Laye r Drive with Li ghtScr ibe (select models only) √√ √ √ Webcam Select models only.
Category Description HP G56 Compaq Presario CQ56 HP G56 Compaq Presario CQ56 AMD AMD Intel Intel USB (3) √√ √ √ VGA (Dsub 15-pin) supporting 1600×1200 external resolution at 75 Hz √√ √ √ Smart-pin AC power √√ √ √ Keyboard/ pointing devices Pocket keyboa rd, 39.
2 External component identification Top TouchPad Component Description (1) TouchPad light To turn the TouchPad on and off, q uickly double-tap the TouchPad light. ● Off: TouchPad is on. ● Amber: TouchPad is off. (2) TouchPad zone Moves the pointer and selects or activates items on the screen.
Lights NOTE: Your computer may look sligh tly different from the illustrati on in this section. Component Description (1) TouchPad light ● Off: TouchPad is on. ● Amber: TouchPad is off. (2) Caps lock light On: Caps lock is on. (3) Power light ● On: The computer is on.
Button and speakers NOTE: Your computer may look sligh tly different from the illustrati on in this section. Component Description (1) Speaker grill Two integrated speakers produce sound. (2) Power button* ● When the computer is off, press the button to turn on the computer.
Keys NOTE: Your computer may look sligh tly different from the illustrati on in this section. Component Description (1) esc key* Displays system information when pressed in combina tion with the fn key. (2) Send e-mail key Opens a new e-mail in your default e-mail client.
Right side NOTE: Your computer may look sligh tly different from the illustrati on in this section. Component Description (1) Optical drive (select models only) Reads and writes to an optical disc. (2) Optical drive light (select models only) Blin king: The optical drive is being a ccessed.
Left side NOTE: Your computer may look sligh tly different from the illustrati on in this section. Component Description (1) External monitor port Connects an ex ternal VGA monitor or p rojector. (2) Vent Enables airflow to cool internal components. NOTE: The computer fan starts up automatically to cool in ternal components and prevent overheating.
Display Component Description (1) Internal microphone (selec t models only) Records sound. (2) Webcam (select models only) Records video and ca ptures still photographs.
Wireless antennas Your computer model ha s two anten nas that send and re ceive signals from one o r more wireless devices. These antenna s are not visibl e from the outside of the computer. NOTE: For optimal transmission, ke ep the areas i mme diately aroun d the antennas (shown in the previous illustr ation) free from o bstructions.
Bottom Component Description (1) Battery bay Holds the battery. (2) Vents (4) Enable airflow to coo l internal components. NOTE: The computer fan starts up automatically to cool in ternal components and prevent overheating. It is no rmal for the internal fan to cycle on and off during routine operation.
Additional hardware Component Description (1) Power cord* Connects an AC adapter to an AC o utlet. (2) AC adapter Converts AC power to DC pow er. (3) Battery* Powers the computer when the computer is not plugged into external power. *Batteries and power cords vary in appearance by region or country.
3 Illustrated parts catalog Service tag When ordering pa rts or requestin g information, pr ovide the comput er serial number an d model description provided on the servi ce tag. Component Description (1) Product name The product name affixed to the front of your computer.
Computer major components 16 Chapter 3 Illustrated parts catalo g.
Item Description Spare part number (1) Display assembly NOTE: For more display assembly internal component spare par t information. See Display assembly components on p age 20 . ● 39.6- cm (15.6-in) HD LED BrightView with webcam and microphone display assembly for HP G56 computer 620589-001 ● 39.
Item Description Spare part number ● For use in Spain 595199-071 ● For use in Switzerland 595199-BG1 ● For use in Turkey 595199-141 ● For use in United Kingdom 595199-031 (3) Speaker assembly .
Item Description Spare part number ● AMD Athlon II P340 processor (2.2 GHz, 1-MB L2 cache, 106 6 MHz, 3.2 GT/s)— dual-core 25 W 616343-001 ● AMD Athlon II P320 processor (2.1 GHz, 1-MB L2 cache, 106 6 MHz, 3.2 GT/s)— dual-core 25 W 594165-001 (13) Hard drive (includes bracket, connector, and screws) ● 500-GB, 5400-rpm 9.
Display assembly components Item Description Spare part number (1) Display bezel ● Presario CQ56 with webcam and micro phone modules 620593-001 ● Presario CQ56 with microphone module only 620592-0.
Item Description Spare part number 39.6-cm (15.6-in) HD, BrightView, CCFL display panel (includes backli ght cables) 616450-001 (4) Hinge/Bracket Kit (includes left and right brackets) For use with LE.
Plastics Kit Item Description Spare part number Plastics Kit 595200-001 (1) Hard drive cover (inc ludes captive scr ews) (2) Memory module compartment cover ( includes captive screw) 22 Chapter 3 Illu.
Mass storage devices Item Description Spare part number (1) Optical dri ve (12.7 mm, SATA, fixed, includes bezel and bracket) DVD± RW SuperMulti Double-Layer Drive with LightScribe 620604-001 (2) Hard drive ● 500-GB, 5400-rpm 9.5-mm, 6 .35-cm (2.5-in) 634932-001 ● 320-GB, 7200-rpm 9.
Miscellaneous parts Description Spare part num ber AC adapt ers ● 65-W, 3-pin Smart AC adapter for use in all coun tries and regions e xcept India 609939-001 ● 65-W, 3-pin Smart AC adapter for use only in India 609948-001 Power cord, AC, 3 wire, black, 1.
Sequential part number listing Spare part number Description 490371-001 Power cord for use in North America 490371-001 Power cord for use in Australia 490371-021 Power cord for use in Europe 490371-03.
Spare part number Description 595199-161 Keyboard for use in Latin America (includes keyboa rd cable) 595199-171 Keyboard for use in Saudi Ara bia (includes keybo ard cable) 595199-211 Keyboard for us.
Spare part number Description 616334-001 AMD Athlon II N350 processor (2.4 GHz, 1-MB L2 cache, 106 6 MHz, 3.2 GT/s)—dual-co re 35 W 616343-001 AMD Athlon II P340 processor (2.2 GHz, 1-MB L2 cache, 106 6 MHz, 3.2 GT/s)—dual-co re 25 W 616450-001 39.
Spare part number Description 621559-001 1-GB memory module (1333-MHz, DDR3 , AMD) 621566-001 2-GB memory module (1333-MHz, DDR3 , AMD) 623909-001 PCA UMA system board (Intel) 623915-001 PCA UMA system board (AMD) 625830-001 Intel Celeron T3500 processor (2.
4 Removal and replacement procedures Preliminary replacement requirements Tools required You will need the following tools to comple te the removal and re placement procedures: ● Flat-bla ded screw .
Cables and connectors CAUTION: When servicing the computer, be sure that c abl es are placed in their prop er locations during the reassembly p rocess. Improp er cable placem ent can damage the co mputer. Cables must be handle d with extreme care to avo id damage.
Grounding guidelines Electrostatic discharge damage Electronic componen ts are sensit ive to electrostatic d ischarge (ESD). Circu itry design and struc ture determine the deg ree of sensitiv ity.
Packaging and transporting guidelines Follow these groun ding guidelines whe n packaging and transp orting equipment: ● To avoid hand contact, transport products in static-safe tubes, bags, or boxes. ● Protect ESD-sensitive parts an d assemblies wi th conductive or approv ed containe rs or packaging.
Equipment guidelines Grounding equi pment must include eith er a wrist stra p or a foot strap at a grou nded workstation. ● When seated, wear a wrist strap connected to a grounded syste m. Wrist straps are flexibl e straps with a minimu m of one megohm ±1 0% resi stance in the ground co rds.
Component replacement procedures This chapter provides removal an d replacement proced ures. There are as many as 6 7 screws, in 10 different sizes, that mu st be removed, replaced, or lo osened when servicing the computer. Make specia l note of each screw size an d location during remova l and replacement.
Computer feet Description Spare part num ber Rubber Kit (includes computer feet) 600849-001 The computer feet a re adhesive -backed rubber pads . The feet attach to the base enclosur e in the locations illustrated below.
Battery Description Spare part num ber 6 cell, 2.20-Ah, 47-Wh 593553-001 6 cell, 2.55-Ah, 55-Wh 593554-001 Before r emoving th e batter y, follow these st eps: 1. Shut down the co mputer. If you are unsure whether th e computer is off or in Hibe rnation, turn the computer on, and th en shut it down thr ough the operating system.
Hard dr ive NOTE: The hard drive spare part kit includes a bra cket, co nnector, and screws. The bracket, connector, an d screws are al so available in the Ha rd Drive Hardwa re Kit. Description Spare part num ber 500-GB, 5400-rpm 9.5-mm, 6.35-cm (2 .
5. Use the Mylar tab (2) to lift the hard drive out of the ha rd drive compartme nt. 6. Disconnect the hard drive ca ble from the system board (3) and remove the hard drive from the computer (4 ) . 7. To replace the hard drive bracket, re move the four Phillip s 3.
Optical drive NOTE: The optical drive spare part ki t includes a bezel an d bracket. Description Spare part num ber DVD±RW SuperMulti Double-Laye r Drive with LightScribe 620604-001 Before removing the optical drive: 1.
2. Remove the optical drive screw. 3. Insert a thin tool, such as a screwdriver (1) , into the releas e access slot in the hard drive bay, and press against the ba ck of the optical drive.
4. Grasp the drive (2) and remove it from the optical drive b ay. Reverse this procedure to rea ssemble an d install the o ptical drive. Component replacement procedures 41.
WLAN module Description Spare part number Atheros AR9285 802.11b/g/n 1x1 WiFi adapter 605560-005 Realtek RTL8191SE 802.11b/g/n 1x1 WiFi ada pter 593533-001 Broadcom 4313 802.11b/g/n 1x1 WiFi adapter 593836-0 01 Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070 Bluetooth 2.
4. Disconnect th e main antenna cable (1) and the auxili ary antenna cable (2) from th e wireless module. 5. Remove the Phillip s 2.0×3.0 screw (3) that secu res the WLAN m odule to the co mputer. (The edge of the m odule opposite the slo t rises away from the comp uter.
Memory module Description Spare pa rt number 1 GB, 1066 MHz DDR2 (Intel) 619545-001 2 GB, 1066 MHz DDR2 (Intel) 619546-001 1 GB, 1333 MHz, DDR3 (AMD) 621559-001 2 GB, 1333 MHz, DDR3, (AMD) 621566-001 Before removing a memory module: 1. Shut down the comp uter.
4. Spread the retaining ta bs (1) on each side of the memory module slot to release the memo ry module. (The edge o f the module opp osite the slot rises away from the computer.
Keyboard Description Spare part number For use in Adriatic countries 5 95199-BA1 For use in Belgium 595199-A41 For use in Canada 595199-121 For use in the Czech Republic 595199-221 For use in France 5.
Remove the keyboard: 1. Position the computer upside down, with the fro nt toward you. 2. Remove the three Phillips 2.5×5.0 and three Phill ips 2.5×6.0 screws that secure the keyboard to the computer. 3. Position the compute r right-side up, with the front to ward you.
7. Release the zero inserti on force (ZIF) conne ctor (1) to which the keyboard cable is a ttached and disconnect the keyboard cable (2) from the system board.
Top cover Description Spare part num ber Top cover (includes TouchPad board) 620605-00 1 Before removing the top cover: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
5. Remove the Phillips 2. 0×5.0 screw that secures the top cover to the computer. 6. Release the speaker cab le (1) , power button ZIF connector (2) , TouchPad ZIF connector (3) , and TouchPad button ZIF co nnector (4) . 7. Lift the rear edge of the top cover (1) until the top cover disengages from the base enclosure.
8. Remove the top cover (2) . NOTE: The TouchPad is glue d to the top cove r and is included with the top cover spare part. Reverse this procedure to insta ll the top cover.
Speaker assembly Description Spare part number Speaker assembly (includes cable) 620607-001 Before removing the sp eaker assembly: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
6. Remove the speaker assembl y by sliding the left ed ge (4) from beneath th e bracket in the to p cover. Reverse this procedu re to install the speake r assembly.
Power button board Description Spare part number Power button board 595204-001 Before removing the power button board: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
TouchPad button board Description Spare part num ber TouchPad button board (with cable) 595203-001 Before removing the Touch Pad button b oard: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
USB board Description Spare part num ber USB board 595205-001 Before removing the USB board: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
Reverse this procedure to insta ll the USB board. Component replacement procedures 57.
Power connector Description Spare part num ber Power connector (includes cable) 602743-001 Before removing t he power connec tor cable: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
Display assembly Description Spare part num ber 39.6-cm (15.6-in) HD LED BrightView display assembly with webcam and microphone for HP G56 computer 620589-001 39.6-cm (15.6-in) HD LED BrightView display assembly with micr ophone for HP G56 computer 620588-001 39.
4. Pull the antenna ca bles through the open ing in the top cove r (3) and disen gage the cables from the clip in the ro uting channel lead ing to the display h inge (4) . 5. Disconnect th e webcam cable (select models only) (5) from the system board and relea se it from the clips that attach it to the system board.
8. To replace any of th e display a ssembly internal components, re move the following screw covers and screws: (1) Two Mylar screw covers on the display bezel bottom edge (2) Two Phillips 2.5× 3.0 screws The display screw covers are included in the Di splay Screw Kit, spare part number 595197-001.
12. Disconnec t the webcam module ca ble (1) from the webcam module, and remove the webcam module (2) . The webc am module is avail able using spare part number 626656-001. Reverse this pro cedure to install th e webcam module. 13. To replace the display inverter, disconnect the cables (1) on both side s of the inverte r.
16. Remove the display hin ge covers (2) . The d isplay hinge covers ar e availabl e using spare part number 600650-0 01. Reverse this proc edure to install the d isplay hinge covers. 17. To replace the display panel, remove the eight Phillip s 2.5 x 4.
20. Remove the display pan el brackets (2) from the display panel. The display panel brackets are available using spare part number 5951 95-001. Reverse this proc edure to install the d isplay panel brackets.
24. To replace the webcam cable, release the a dhesive tabs (3) from the display cover and lift up on the webcam cable (4) . Reverse this procedure to insta ll the microphon e and webcam cable s.
System board NOTE: The system board spare part kit inclu des UMA graphics subsystem memory and replacement thermal material . Description Spare part num ber PCA UMA system board (AMD) 623915-001 PCA U.
Remove the following cabl es from the system board: ● Power connector cable (see Powe r connector on page 58 ) ● USB board cable (see USB board on pag e 56 ) 1. Position the computer u pright with the right side toward you. 2. To remove the optical drive cable, disconnect it from the system board (1) , and then remove the two Phillips 2.
6. Pull the system board (3) away from the base enclosure at an angle. The AMD system board is sh own below. The Intel system board is sh own below. Reverse this procedure to install the system board.
RTC battery Description Spare part number RTC battery 602745-001 Before r emoving the RTC b attery: 1. Shut down the comp uter. If you are unsure whether the computer is off or in Hibernat ion, turn on the computer, and th en shut it down through the operating system.
3. Lift the battery (2) out of the computer. Reverse this procedure to in stall the RTC battery. 70 Chapter 4 Remova l and replacement procedures.
Fan/heat sink assembly Description Spare part num ber Fan/heat sink assembly (includes r eplacement thermal materi al) for use with UMA systems (AMD) 630722-001 Fan/heat sink assembly (includes r eplacement thermal materi al) for use with UMA systems (Intel) 606573-001 Before removing the fan/heat sink assembly: 1.
2. Disconnect the fan cable from the system board. 3. Follow the sequence embossed on the heat sink to loosen the th ree Phillips 2.5 x 9.0 captive screws (1) that secure the fan/heat sink assembly to the system board.
6. Disconnect the fan cable from the system board. 7. Loosen the two Phillip s captive screws and the four Ph illips spring-loaded captive screws (1) that secure the fan/ heat sink asse mbly.
Thermal pads and thermal paste must be installed on all surfaces before the fan/heat sink asse mbly is reinstalled. NOTE: Thermal pads and th ermal paste are included with all fan/heat sink assembly, system board, and processor spare part kits.
Processor NOTE: The processor spare part kits inclu de replacement therma l material. Description Spare part num ber Intel Mobile Celeron 925 processor (2.3 GHz, 1-MB L3 cache, 800 MHz) 636636-001 Intel Celeron 900 processor (2.2 GHz) 534419-001 Intel Pentium T4500 processor (2.
Remove the proce ssor: 1. Turn the processor locking screw (1) one-half turn counterclockwise unti l you hear a click. 2. Lift the processor (2) straight up and remove it. NOTE: The gold tria ngle (3) on the processor must be alig ned with the triangle i con (4) embossed on the processor soc ket when you in stall the proc essor.
5 Setup Utility Computer Setup To view the drives install ed on the compute r, select Start > Comp uter . On models with a secondary hard d rive (drive D), the optical drive becomes drive E. The next drive added to the system, such as a new USB drive, is assigned the next available drive letter.
3. Use the arrow keys to select a lang uage, and then press enter key. 4. When a confirmation prom pt with your langua ge selected di splays, press the enter key. 5. To save your change and exit Setup Utility, use the arro w keys to select Exit > Exit Saving Changes , and then press the enter key.
Restoring defa ult settings in S etup Utility The following procedure expl ains how to restore Setu p Utility default settings. If Setup Uti lity is not already running, begin at step 1. If Setup Utility is already running, begin at step 2. 1. Open Setup Utility by turn ing on or restarting the computer .
Exiting Setup Utility You can exit Setup Utility with or without saving changes. ● To exit Setup Utility and save changes from the current session: If the Setup Utility menu s are not displayed, p ress the esc key to return to the menu display. Then use the a rro w keys to select Exit > Exit Saving Changes , and then press the enter key.
System Configuration menu Select To do this Language Support Change the language of Setup Utility. Button Sound (select models only) Enable/d isable the capacitive button tapping sound. Virtualization Technology (select models only) Enable /disable the processor Vi rtualization Technology.
6 Specifications Computer specifications Dimensions Depth 24.7 cm (9.7 in) Width 37.4 cm (14.7 in) Height (front to rear) 3.3 cm to 3.8 cm (1.3 to 1.5 in) Weight (lowest weight config uration) 2.54 kg (5.59 lb s) Input power Operating voltage 18.5 V dc @ 4.
39.6-cm (15.6-in) display specifications Dimensions Height 21.0 cm (8.27 in) Width 35.9 cm (14.1 in) Diagonal 39.6 cm (15.6) Number of colors Up to 16.8 million Contrast ratio 300:1 (typical) Brightness 200 nits ( typical) Pixel resolution Pitch 0.259 × 0.
Hard drive specifications 320 GB* 250 GB* 160 GB* Dimensions Height 9.5 mm 9 .5 mm 9.5 mm Width 70 mm 70 mm 70 mm Weight 101 g 101 g 102 g Interface typ e SATA SATA SATA Transfer rate 300 MB/sec 100 MB/sec 100 MB/sec Security ATA security ATA security ATA security Seek times (typical read, including setting) Single track 1.
DVD±RW SuperMulti Double-Layer Drive with LightScribe specifications Applicable disc Read CD-DA, CD+(E)G, CD-MID I, CD-TEXT, CD-ROM, CD-ROM XA, MIXED MODE CD, CD-I, CD-I Bridge (P hoto-CD, Video CD),.
7 Backup and recovery Windows 7 backup and recovery To protect you r information, use Windows Backup and Restore to back up individua l files and folders, back up your entire hard drive (sel ect models only), create system repair discs (select models only), or create system restore points.
● Save customized settings th at appear in a window , toolb ar, or menu bar by taking a screen shot of your settings. The scree n shot can be a time -s aver if you have to reset you r preferenc es. To create a scr een shot: 1. Display the screen you want to save.
NOTE: If you are unable to boot (start up) your computer and you cannot use the system repair discs you previously created (select models only ), you must purchase a Window s 7 operating system DVD to reboot the computer and re pair the operating system.
NOTE: If your comput er includes a solid-st ate drive (SSD), you may not have a re covery partition. Recovery discs have been included for computers that do not have a partition. Use these discs to recover your operatin g system a nd softwar e. To che ck for the presen ce of a re covery partition, select Start > Computer .
Linux backup and recovery Use the instructions in this section if SUSE Li nux SLED 11 is insta lled on you r computer. To protect your information, back up your files and folders. Then if the syst em fails , you can restore your important files from co pies.
8 Power cord set requirements The wide range input fe ature of the co mputer permits it to ope rate from any line voltag e from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor powe r cord set included wi th t he computer meets the requirem ents for use in the country or region where the e quipment is purchased .
Requirements for specific countries or regions Country/region Accredited agency Applicable note number Australia EANSW 1 Austria OVE 1 Belgium CEBC 1 Canada CSA 2 Denmark DEMKO 1 Finland FIMKO 1 Franc.
9 Recycling Battery When a battery has reached the end of its useful life, d o not dispose of the battery in genera l household waste. Follo w the local laws a nd regulati ons in your area for computer b attery disposal. Display WARNING! The backlight contains mercury.
Perform the following ste ps to di sassemble the display assembly: 1. Remove all screw covers (1) and screws (2 ) that secure the display bezel to the display assembly. 2. Lift up and out o n the left and ri ght inside edges (1) and the top an d bottom inside edge s (2) of the display beze l until the bezel disengag es from the display assembly.
4. Remove the two screws (1) that secure each hinge to the display enclosure and lift up to remove the display hinge covers (2) . 5. Remove all screws (1) that secure the display panel a ssembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure.
8. Use a sharp-edg ed tool to cut the tape (1) that secures the sides of the display panel to the display panel frame. 9. Remove the display panel frame (2) from the d isplay panel. 10. Remove the screws (1) that secure the backlight cover to the display panel.
14. Remove the backlight cables (1) from the clip (2) in the display pa nel. 15. Turn the display pane l upside down. 16. Remove the backlight frame from th e display panel. WARNING ! The backlight contains mercury. Exercise caution when removing and handling t he backlight to avoid damag ing this compon ent and causin g exposure to the me rcury.
17. Remove the backlight from the backlight frame. 18. Disconnec t the display cabl e (1) from the LCD panel. 19. Remove the screws (2) that secure the LCD panel to the d isplay rear panel. 20. Release the LCD panel (3) from the d isplay rear panel. 21.
22. Remove the LCD panel. 23. Recycle the LCD panel and backlight. Display 99.
Index A AC adapter identifying 14 spare part numbers 24 AC adapter light, identifying 9 action keys, identifying 8 administrator password 80 antennas identifying 12 remov al 64 applications key, Windo.
drives boot order 81 preventing damage 30 DVD±RW SuperMulti Double- Layer Drive with L ightScribe identifying 9 precautions 30 product description 3 remov al 39 spare part numbers 23, 39 specificatio.
power conn ector cable remov al 58 spare part number 18, 58 power connector, identi fying 9 power cord identifying 14 spare part numbers 24 power cord set re quirements 91 power light, identifyin g 6 .
An important point after buying a device Compaq CQ56 (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 CQ56 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 CQ56 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Compaq CQ56 you will learn all the available features of the product, as well as information on its operation. The information that you get Compaq CQ56 will certainly help you make a decision on the purchase.
If you already are a holder of Compaq CQ56, 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 CQ56.
However, one of the most important roles played by the user manual is to help in solving problems with Compaq CQ56. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Compaq CQ56 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
