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System DMA specifications, AMD

Hardware DMA

System function

DMA4

Direct memory access controller

System interrupt specifications, AMD discrete graphics

Hardware

IRQ System function

IRQ0

High precision event timer

IRQ1

Standard 101-/102-Key or Microsoft® Natural PS/2 Keyboard

IRQ5

RICOH OHCI Compliant IEEE 1394 Host Controller

IRQ7

Ricoh Memory Stick Controller

Ricoh SD/MMC Host Controller

Ricoh XD-Picture Card Controller

SDA Standard Compliant SD Host Controller

IRQ8

High precision event timer

IRQ10

nVidia nForce PCI System Management

IRQ11

nVidia nForce System Management Controller

IRQ12

Synaptics PS/2 Port TouchPad

IRQ13

Numeric data processor

IRQ14

ATA Channel 0

IRQ15

ATA Channel 1

IRQ16

Broadcom WLAN adapter

IRQ17

Standard Enhanced PCI to USB Host Controller

IRQ18

Standard OpenHCD USB Host Controller

IRQ19

nVidia GeForce8400M GS

IRQ20

nVidia nForce Networking Controller

IRQ21

HDA Controller

IRQ23

Standard Dual Channel PCI IDE Controller

System DMA specifications, AMD

Содержание Pavilion dv2

Страница 1: ...HP Pavilion dv2 Entertainment PC Maintenance and Service Guide ...

Страница 2: ...rosoft 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 such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or...

Страница 3: ...llow another hard surface such as an adjoining optional printer or a soft surface such as pillows or rugs or clothing to block airflow Also do not allow the AC adapter to contact the skin or a soft surface such as pillows or rugs or clothing during operation The computer and the AC adapter comply with the user accessible surface temperature limits defined by the International Standard for Safety o...

Страница 4: ...iv Safety warning notice ...

Страница 5: ...ervice tag 14 Computer major components 16 Access doors 22 Cable Kit 23 Mass storage devices 24 Miscellaneous parts 25 Sequential part number listing 26 4 Removal and replacement procedures Preliminary replacement requirements 31 Tools required 31 Service considerations 31 Plastic parts 31 Cables and connectors 32 Drive handling 32 Grounding guidelines 33 Electrostatic discharge damage 33 Packagin...

Страница 6: ...rting the Setup Utility 80 Using the Setup Utility 81 Changing the language of the Setup Utility 81 Navigating and selecting in the Setup Utility 81 Displaying system information 82 Restoring default settings in the Setup Utility 82 Exiting the Setup Utility 82 Setup Utility menus 84 Main menu 84 Security menu 84 System Configuration menu 84 Diagnostics menu 85 6 Specifications Computer specificat...

Страница 7: ... screw 108 Phillips PM2 5 4 0 screw 110 Phillips PM2 5x4 0 screw 112 Phillips PM3 0 4 0 screw 114 Phillips PM2 5 6 0 screw 115 Phillips PM2 5 9 0 screw 116 Phillips PM2 5x10 0 screw 117 8 Backup and Recovery Recovering system information 118 Creating recovery discs 119 Backing up your information 120 When to back up 120 Backup suggestions 120 Using system restore points 120 When to create restore ...

Страница 8: ...niversal Serial Bus 126 10 Power cord set requirements Requirements for all countries or regions 127 Requirements for specific countries or regions 128 11 Recycling Battery 129 Display 129 Index 135 viii ...

Страница 9: ...410 with 512 MB of discrete graphics subsystem memory 64 MB 16 DDR2 4 PCs Unified memory architecture UMA integrated with shared video memory ATI Radeon X1250 with 64 MB Up to 358 MB of graphics subsystem memory on computer models equipped with 2048 MB or more of main system memory Up to 251 MB of graphics subsystem memory on computer models equipped with 1024 MB Memory size is dynamic change Supp...

Страница 10: ...5400 rpm 320 GB 5400 rpm 250 GB 5400 rpm 160 GB 5400 rpm Optical drives Supports external optical drive only through USB port Webcam Low light VGA camera Fixed no tilt Activity LED 640 480 by 24 frames per second Microphone Single analog microphone with appropriate software supports beam forming echo cancellation and noise suppression Audio HD Audio IDT Supports Microsoft Premium requirements Pavi...

Страница 11: ...ital SD Memory Card Secure Digital High Capacity SDHC Memory Card xD supports mini versions of SD MMC MS Duo with adapter adapter not included Ports Audio in stereo microphone Audio out stereo headphone High Definition Multimedia Interface HDMI v1 3b supporting 1080p with HDCP key RJ 45 Ethernet includes link and activity lights USB 2 0 3 VGA Dsub 15 pin supporting 1920 x 1200 external resolution ...

Страница 12: ...y 65 W AC adapter with localized cable plug support 2 wire plug with ground pin supports 2 pin DC connector Security Security cable slot Operating system Preinstalled FreeDOS Windows Vista Home Basic 32 bit Windows Vista Home Premium 32 bit Windows Vista Home Premium 64 bit Serviceability AC adapter Battery system Hard drive 1 Memory module Mini Card components 4 Chapter 1 Product description ...

Страница 13: ...ntenna locations 2 select models only Send or receive signals from one or more wireless devices These antennas are not visible from the outside of the computer 2 Internal microphone Records sound 3 Webcam light On The webcam is in use 4 Webcam Records video and captures still photographs Top components 5 ...

Страница 14: ...left button on an external mouse 4 TouchPad light White TouchPad is enabled Amber TouchPad is disabled 5 TouchPad scroll zone Scrolls up or down 6 Right TouchPad button Functions like the right button on an external mouse This table describes factory settings To view and change pointing device preferences select Start Control Panel Hardware and Sound Mouse 6 Chapter 2 External component identifica...

Страница 15: ...y Displays the Windows Start menu 4 Windows applications key Displays a shortcut menu for items beneath the pointer 5 Embedded numeric keypad keys Can be used like the keys on an external numeric keypad 6 num lk key When pressed in combination with the fn key the num lk key enables and disables the embedded numeric keypad 7 Function keys Execute frequently used system functions when pressed in com...

Страница 16: ...y is charging Blinking A battery that is the only available power source has reached a low battery level When the battery reaches a critical battery level the battery light begins blinking rapidly Off If the computer is plugged into an external power source the light is turned off when all batteries in the computer are fully charged If the computer is not plugged into an external power source the ...

Страница 17: ...y is charging Blinking A battery that is the only available power source has reached a low battery level When the battery reaches a critical battery level the battery light begins blinking rapidly Off If the computer is plugged into an external power source the light is turned off when all batteries in the computer are fully charged If the computer is not plugged into an external power source the ...

Страница 18: ... turn off the computer To learn more about your power settings select Start Control Panel System and Maintenance Power Options 3 Wireless light On An integrated wireless device such as a WLAN device and or a Bluetooth device is on Off All wireless devices are off 4 Wireless button Turns the wireless feature on or off but does not create a wireless connection NOTE To establish a wireless connection...

Страница 19: ...a headset or television audio 9 USB port Connects an optional USB device 10 AC adapter light On The computer is connected to external power Off The computer is not connected to external power 11 Power connector Connects an AC adapter 12 Security cable slot Attaches an optional security cable to the computer NOTE The security cable is designed to act as a deterrent but it may not prevent the comput...

Страница 20: ...ital or audio component 4 USB ports 2 Connect optional USB devices NOTE Select models only can be configured with an optional external USB optical disc drive For more information refer to the printed Quick Setup poster 5 Vent Enables airflow to cool internal components NOTE The computer fan starts up automatically to cool internal components and prevent overheating It is normal for the internal fa...

Страница 21: ...located inside the battery bay 5 Battery release latches 2 Release the battery from the battery bay 6 Battery bay Holds the battery 7 Wireless module compartment Holds a wireless LAN module NOTE To prevent an unresponsive system replace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or re...

Страница 22: ...tifier that is unique to each product 3 Part number Product number p n 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 4 Model description This is the alphanumeric identifier needed to locate documents drivers and support for the computer 5 Warranty period This number desc...

Страница 23: ...Service tag 15 ...

Страница 24: ...m Description Spare part number 1 12 1 inch display Panel includes wireless antenna transceivers and cables WXGA BrightView display panel with webcam and 1 microphone Espresso Black 506769 001 16 Chapter 3 Illustrated parts catalog ...

Страница 25: ... brackets 517737 001 Display hinges 517738 001 Display hinge covers 517739 001 Display cable 517740 001 Display screw kit 517743 001 Antennas 517760 001 2 Keyboard includes keyboard cable Espresso Black Keyboards Belgium 506782 A41 Brazil 506782 201 Denmark Norway and Sweden 506782 DH1 France 506782 051 French Canada 506782 121 Germany 506782 041 Greece 506782 151 Italy 506782 061 Japan 506782 291...

Страница 26: ... 161 The Netherlands 517584 B31 Portugal 517584 131 Russia 517584 251 Saudi Arabia 517584 171 South Korea 517584 AD1 Spain 517584 071 Switzerland 517584 111 Taiwan 517584 AB1 Thailand 517584 281 Turkey 517584 141 The United Kingdom 517584 031 The United States 517584 001 3 Top cover includes TouchPad TouchPad cable and TouchPad buttons Top cover Espresso Black 517745 001 Top cover Moonlight White ...

Страница 27: ...hermal material With UMA graphics subsystem memory ATI Radeon X1250 with 64MB 506762 001 With discrete graphics subsystem memory ATI Mobility Radeon HD 3410 with 512MB of dedicated video memory 506763 001 10 RTC Battery 517759 001 11 Speaker includes speaker cable 517754 001 12 Battery Battery 4 cell 32 Wh 2 8 Ah Li on 506780 001 Battery 6 cell 55 Wh 2 55 Ah Li on 506781 001 Battery cover not illu...

Страница 28: ...dcom 4322 802 11a b g n WLAN module For use in Antigua and Barbuda Barbados Belize Canada the Cayman Islands Guam Puerto Rico Trinidad and Tobago the U S Virgin Islands and the United States 504664 001 For use in Afghanistan Albania Algeria Andorra Angola Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan the Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Be...

Страница 29: ...dels equipped with AMD processors 506772 001 1024 MB memory module for use only with computer models equipped with AMD processors 506771 001 19 WWAN module 483377 002 20 Hard drive includes left and right bracket rails connector cable Mylar cover with tab and 4 rubber isolators 500 GB 5400 rpm 506776 001 320 GB 5400 rpm 506775 001 250 GB 5400 rpm 506774 001 160 GB 5400 rpm 506773 001 Hard Drive Ha...

Страница 30: ...8 001 1 WLAN module compartment cover includes 1 captive screw secured by a C clip 2 Hard drive bay cover includes 2 captive screws secured by C clips 3 Memory module compartment cover includes 1 captive screw secured by a C clip 22 Chapter 3 Illustrated parts catalog ...

Страница 31: ...Cable Kit Item Description Spare part number Cable Kit 517757 001 1 Power connector cable 2 Bluetooth module cable 3 USB cable 4 RJ 45 cable includes RJ 45 jack Cable Kit 23 ...

Страница 32: ...400 rpm 506774 001 160 GB 5400 rpm 506773 001 Hard Drive Hardware Kit not illustrated includes left and right bracket rails connector cable Mylar cover with tab and 4 rubber isolators 506777 001 2 External Optical drives include front bezel and bracket Blu ray ROM with LightScribe DVD R RW SuperMulti DL Drive 506779 001 DVD RW SuperMulti Double Layer Combo Drive with LightScribe 506778 001 24 Chap...

Страница 33: ... States 490371 001 Denmark 490371 081 India 490371 D61 Israel 490371 BB1 Italy 490371 061 South Africa 490371 AR1 South Korea 490371 AD1 Switzerland 490371 111 Taiwan 490371 AB1 The United Kingdom and Singapore 490371 031 Screw Kit Phillips PM2 5x10 0 screw Phillips PM2 5 9 0 screw Phillips PM2 5 6 0 screw Phillips PM2 5 6 0 captive screw Phillips PM2 5x5 0 screw Phillips PM2 5 4 0 screw Phillips ...

Страница 34: ...therlands Norway Portugal Spain and Sweden 490371 031 Power cord for use in the United Kingdom and Hong Kong 490371 061 Power cord for use in Italy 490371 081 Power cord for use in Denmark 490371 111 Power cord for use in Switzerland 490371 201 Power cord for use in Brazil 490371 AB1 Power cord for use in Taiwan 490371 AD1 Power cord for use in South Korea 490371 AR1 Power cord for use in South Af...

Страница 35: ...Islands and the United States 504664 002 Broadcom 4322 802 11a b g n WLAN module for use only with computer models equipped with AMD processors in Afghanistan Albania Algeria Andorra Angola Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan the Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia and Herzegovina Botswana Brazil the Br...

Страница 36: ...06782 031 Espresso Black keyboard for use in the United Kingdom 506782 041 Espresso Black keyboard for use in Germany 506782 051 Espresso Black keyboard for use in France 506782 061 Espresso Black keyboard for use in Italy 506782 071 Espresso Black keyboard for use in Spain 506782 111 Espresso Black keyboard for use in Switzerland 506782 121 Espresso Black keyboard for use in French Canada 506782 ...

Страница 37: ... in Brazil 517584 251 Moonlight White keyboard for use in Russia 517584 281 Moonlight White keyboard for use in Thailand 517584 291 Moonlight White keyboard for use in Japan 517584 A41 Moonlight White keyboard for use in Belgium 517584 AB1 Moonlight White keyboard for use in Taiwan 517584 AD1 Moonlight White keyboard for use in South Korea 517584 B31 Moonlight White keyboard for use in The Netherl...

Страница 38: ...dule compartment cover hard drive bay cover 517749 001 Fan 517752 01 Base enclosure for use with system boards with UMA graphics subsystem memory 517753 001 Base enclosure for use with system boards with discrete graphics subsystem memory 517754 001 Speaker 517756 001 Power switch board 517757 001 Cable Kit 517758 001 DC in cable 517759 001 RTC battery 517760 001 Antennas 517761 001 Rubber Kit inc...

Страница 39: ...e some of the considerations that you must keep in mind during disassembly and assembly procedures NOTE As you remove each subassembly from the computer place the subassembly and all accompanying screws away from the work area to prevent damage Plastic parts CAUTION Using excessive force during disassembly and reassembly can damage plastic parts Use care when handling the plastic parts Apply press...

Страница 40: ...erting a hard drive shut down the computer If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it down through the operating system Before handling a drive be sure that you are discharged of static electricity While handling a drive avoid touching the connector Before removing a diskette drive or optical drive be sure that a diskette or disc is not in...

Страница 41: ...s Keep components in their electrostatic safe containers until you are ready to install them Use nonmagnetic tools Before touching an electronic component discharge static electricity by using the guidelines described in this section Avoid touching pins leads and circuitry Handle electronic components as little as possible If you remove a component place it in an electrostatic safe container The f...

Страница 42: ...nd that proper materials are selected to avoid static charging When grounding is not possible use an ionizer to dissipate electric charges Workstation guidelines Follow these grounding workstation guidelines Cover the workstation with approved static shielding material Use a wrist strap connected to a properly grounded work surface and use properly grounded tools and equipment Use conductive field...

Страница 43: ...e between the operator and ground To be effective the conductive strips must be worn in contact with the skin The following grounding equipment is recommended to prevent electrostatic damage Antistatic tape Antistatic smocks aprons and sleeve protectors Conductive bins and other assembly or soldering aids Nonconductive foam Conductive tabletop workstations with ground cords of one megohm resistanc...

Страница 44: ...ect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the RTC battery see RTC battery on page 66 6 Wait approximately 10 seconds 7 Replace the RTC battery and reassemble the computer 8 Connect AC power ...

Страница 45: ...vice tag 1 Product name This is the product name affixed to the front of the computer 2 Serial number s n This is an alphanumeric identifier that is unique to each product 3 Part number Product number p n 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 4 Model description ...

Страница 46: ...uded in the Rubber Kit spare part number 517761 001 Two rectangular rubber feet attach to the back edge of the base enclosure and two square rubber feet attach to the front edge of the base enclosure in the locations illustrated below 38 Chapter 4 Removal and replacement procedures ...

Страница 47: ...ter 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer Remove the battery 1 Turn the computer upside down on a flat surface 2 On the battery pack slide the right battery release latch to the left 1 then slide the left battery release latch to the right 2 and hold it 3 Slide the battery pack 3 away from...

Страница 48: ...se steps 1 Shut down the computer If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it down through the operating system 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery s...

Страница 49: ...he 7 0 mm screw in the correct location as indicated below If it is accidentally screwed into one of the 4 0 mm screw locations it imay damage the computer 5 Use the Mylar tab to slide the hard drive to the left to disconnect it from the system board 3 and then lift the hard drive up on the right and remove it from the hard drive bay 4 6 If it is necessary to replace the hard drive bracket or any ...

Страница 50: ...7 Lift the bracket 2 straight up to remove it from the hard drive Reverse this procedure to reassemble and install the hard drive 42 Chapter 4 Removal and replacement procedures ...

Страница 51: ...unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 Remove the memory module 1 Position the computer upside down with the front toward you 2 Loosen the two Phillips PM2 5 6 0 captive screws 1 that secure the memory module compartment cover to the computer 3 Lift the front edge of the cover swing it up and to the left 2 and remove the cover 3 The memory module co...

Страница 52: ...away from the slot at an angle NOTE Memory modules are designed with a notch 3 to prevent incorrect insertion into the memory module slot Reverse this procedure to install the memory module 44 Chapter 4 Removal and replacement procedures ...

Страница 53: ...ace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region If you replace the module and then receive a warning message remove the module to restore computer functionality and then contact technical support through Help and Support 1 Position the computer upside down with the front towa...

Страница 54: ...e the WWAN module to the computer The edge of the module opposite the slot rises away from the computer 6 Remove the WWAN module 3 by pulling it away from the slot at an angle NOTE WWAN modules are designed with a notch 4 to prevent incorrect insertion into the WWAN module slot Reverse this procedure to install the WWAN module 46 Chapter 4 Removal and replacement procedures ...

Страница 55: ...Uzbekistan Vanuatu Venezuela Vietnam Yemen Zaire Zambia and Zimbabwe 504664 002 Broadcom BCM4312 802 11b g WLAN module for use in Antigua and Barbuda Barbados Belize Canada the Cayman Islands Guam Puerto Rico Trinidad and Tobago the U S Virgin Islands and the United States 504593 001 Broadcom BCM4312 802 11b g WLAN module for use in Afghanistan Albania Algeria Andorra Angola Antigua and Barbuda Ar...

Страница 56: ... a warning message remove the module to restore computer functionality and then contact technical support through Help and Support 1 Position the computer upside down with the front toward you 2 Loosen the Phillips PM2 5x6 0 captive screw 1 that secures the WLAN module compartment cover to the computer 3 Lift the edge of the cover swing it up and to the left 2 and remove the cover 3 The WLAN modul...

Страница 57: ...y pulling it away from the slot at an angle NOTE WLAN modules are designed with a notch 4 to prevent incorrect insertion into the WLAN module slot Reverse this procedure to install a WLAN module Component replacement procedures 49 ...

Страница 58: ...n Spare part number For use in country or region Spare part number Belgium 517584 A41 Portugal 517584 131 Brazil 517584 201 Russia 517584 251 Denmark Norway and Sweden 517584 DH1 Saudi Arabia 517584 171 France 517584 051 South Korea 517584 AD1 French Canada 517584 121 Spain 517584 071 Germany 517584 041 Switzerland 517584 111 Greece 517584 151 Taiwan 517584 AB1 Italy 517584 061 Thailand 517584 281...

Страница 59: ...dule on page 45 d WLAN module see WLAN module on page 47 Remove the keyboard 1 Turn the computer upside down with the front toward you 2 Remove one Phillips PM2 5 10 0 screw located in the memory module compartment and one Phillips PM2 5 10 0 screw located in the WLAN compartment The screw locations are identified by keyboard icons 3 Turn the computer display side up with the front toward you 4 Op...

Страница 60: ...ard is accessible 7 Release the zero insertion force ZIF connector 1 to which the keyboard cable is connected and disconnect the cable 2 from the system board 8 Remove the keyboard Reverse this procedure to install the keyboard 52 Chapter 4 Removal and replacement procedures ...

Страница 61: ... from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on pag...

Страница 62: ...Phillips PM2 5x5 0 screws 1 that secure the top cover to the computer 6 Lift the rear edge 2 of the top cover until it rests at an angle 7 Remove the top cover 3 by lifting it up from the back and sliding it out Reverse this procedure to install the top cover 54 Chapter 4 Removal and replacement procedures ...

Страница 63: ...from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on page 50 f Top cover see Top cover on page 53 Remove the f...

Страница 64: ...n The fan is controlled by a temperature sensor and is designed to turn on automatically when 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 on the left side of the compute...

Страница 65: ...uter 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC Adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e K...

Страница 66: ...3 Remove the Bluetooth module 3 from the base enclosure Reverse this procedure to install the Bluetooth module 58 Chapter 4 Removal and replacement procedures ...

Страница 67: ...from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on page 50 f Top cover see Top cover on page 53 g Fan see Fa...

Страница 68: ...em board 1 Speaker cable 2 Camera microphone cable 3 Power connector cable 4 RJ 45 cable 2 Turn the computer upside down and disconnect the display panel cable located in the WLAN compartment 3 Turn the computer right side up 60 Chapter 4 Removal and replacement procedures ...

Страница 69: ...2 0x3 0 screws 1 from the power switch board on the top right side of the computer 6 Disconnect the audio infrared cable 2 from the power switch board 7 Lift the power switch board 3 up from the base enclosure The power switch board is available using spare part number 517756 001 Component replacement procedures 61 ...

Страница 70: ...osure as illustrated below 9 Pull the left side of the metal trim away from the computer 1 lift the system board up on the left side at an angle 2 and remove it from the base enclosure 3 Reverse this procedure to install the system board 62 Chapter 4 Removal and replacement procedures ...

Страница 71: ...he power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on page 50 f Top cover see Top cover on page 5...

Страница 72: ...ation turn the computer on and then shut it down through the operating system 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page ...

Страница 73: ...eaker assembly on page 63 Remove the LED board 1 Remove the two PM2 0x5 0 screws 1 that secure the LED board to the base enclosure 2 Lift the LED board up 2 and out of the base enclosure Reverse this procedure to install the LED board Component replacement procedures 65 ...

Страница 74: ...onnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see...

Страница 75: ...ve the RTC battery 2 from the socket on the system board Reverse this procedure to install the RTC battery Be sure that the RTC battery is installed with the sign facing up Component replacement procedures 67 ...

Страница 76: ...tery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on page 50 f Top cover see Top cover on page 53 g Fan see Fan on page 55 h System board see System board on page 59 i Speaker assembly see Speaker a...

Страница 77: ...Two rubber screw covers on the display bezel bottom edge The display rubber screw covers are included in the Rubber Kit spare part number 517761 001 2 Two Phillips PM2 0 5 0 screws 6 Flex the inside edges of the bottom edge 1 the left and right sides 2 and the top edge 3 of the display bezel until the bezel disengages from the display enclosure Component replacement procedures 69 ...

Страница 78: ...lips PM2 0x5 0 screws 1 and the four Phillips PM 2 5x4 0 screws 2 that secure the hinges to the display panel 9 Remove the display hinges 3 The display hinges are available in the Display Hinge Kit spare part number 517738 001 The display hinge screws are available in the Display Screw Kit spare part number 517743 001 70 Chapter 4 Removal and replacement procedures ...

Страница 79: ...f it is necessary to replace the display panel remove the four Phillips PM2 5 4 0 screws 1 that secure the display panel to the display enclosure 12 Remove the display panel 2 The display panel is available using spare part number 517742 001 WXGA BrightView display panel Reverse this procedure to reassemble and install the display assembly Component replacement procedures 71 ...

Страница 80: ...ter If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it down through the operating system 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer 4 Remove the battery see Battery on page 39 Remove t...

Страница 81: ...s far as the webcam microphone module cable allows 6 Disconnect the webcam microphone module cable 2 from the webcam microphone module 7 Remove the webcam microphone module Reverse this procedure to install the webcam microphone module Component replacement procedures 73 ...

Страница 82: ...rst unplugging the power cord from the AC outlet and then unplugging the AC Adapter from the computer 4 Remove the battery see Battery on page 39 5 Remove the following components a Hard drive see Hard drive on page 40 b Memory module see Memory module on page 43 c WWAN module see WWAN module on page 45 d WLAN module see WLAN module on page 47 e Keyboard see Keyboard on page 50 f Top cover see Top...

Страница 83: ...2 Remove the power connector cable 2 from the routing channel built into the base enclosure Reverse this procedure to install the power connector cable Component replacement procedures 75 ...

Страница 84: ...ilation grill located on the left side of the computer Before removing the heat sink follow these steps 1 Shut down the computer If you are unsure whether the computer is off or in Hibernation turn the computer on and then shut it down through the operating system 2 Disconnect all external devices connected to the computer 3 Disconnect the power from the computer by first unplugging the power cord...

Страница 85: ... 1 that secure the heat sink assembly to the system board 3 Remove the heat sink 2 NOTE Due to the adhesive quality of the thermal material located between the heat sink and system board components it may be necessary to move the heat sink from side to side to detach it NOTE Steps 4 and 5 apply only to computer models equipped with UMA graphics subsystem memory 4 Loosen the three Phillips PM2 0 4 ...

Страница 86: ... module kit spare part number 517747 001 and the discrete memory system board kit spare part number 506763 001 The following illustration shows the replacement thermal material locations for computer models equipped with discrete graphics subsystem memory NOTE The thermal material must be thoroughly cleaned from the surfaces of the system board 1 and 2 and the heat sink components 3 each time the ...

Страница 87: ...llustration shows the replacement thermal material locations for computer models equipped with UMA graphics subsystem memory Reverse this procedure to install the heat sink assembly Component replacement procedures 79 ...

Страница 88: ...and provides settings for startup security and other preferences To start the Setup Utility Open the Setup Utility by turning on or restarting the computer While the Press the ESC key for Startup Menu message is displayed in the lower left corner of the screen press f10 or 1 Open the Setup Utility by turning on or restarting the computer While the Press the ESC key for Startup Menu message is disp...

Страница 89: ...Configuration Language and then press enter 3 Use the arrow keys to select a language and then press enter 4 When a confirmation prompt with your language selected is displayed press enter 5 To save your change and exit the Setup Utility use the arrow keys to select Exit Exit Saving Changes and then press enter Your change goes into effect immediately Navigating and selecting in the Setup Utility ...

Страница 90: ...the computer While the Press the ESC key for Startup Menu message is displayed in the lower left corner of the screen press f10 or Open the Setup Utility by turning on or restarting the computer While the Press the ESC key for Startup Menu message is displayed in the lower left corner of the screen press esc When the Startup Menu is displayed press f10 2 Use the arrow keys to select Exit Load Setu...

Страница 91: ...After either choice the computer restarts in Windows Using the Setup Utility 83 ...

Страница 92: ...rd Enter change or delete an administrator password Power On Password Enter change or delete a power on password System Configuration menu Select To do this Language Support Change the Setup Utility language Button Sound select models only Enable disable the capacitive button tapping sound Virtualization Technology select models only Enable disable the processor Virtualization Technology Processor...

Страница 93: ...pter boot Enable disable boot from Internal Network Adapter Boot Order Set the boot order for USB Floppy Internal CD DVD ROM drive USB CD DVD ROM drive Hard drive USB Diskette on Key USB Hard drive Network adapter Diagnostics menu Select To do this Hard Disk Self Test Run a comprehensive self test on the hard drive NOTE On models with two hard drives this menu option is called the Primary Hard Dis...

Страница 94: ...current 3 5 A or 4 74 A Temperature Operating not writing to optical disc 0 C to 35 C 32 F to 95 F Operating writing to optical disc 5 C to 35 C 41 F to 95 F Nonoperating 20 C to 60 C 4 F to 140 F Relative humidity Operating 10 to 90 Nonoperating 5 to 95 Maximum altitude unpressurized Operating 15 m to 3 048 m 50 ft to 10 000 ft Nonoperating 15 m to 12 192 m 50 ft to 40 000 ft NOTE Applicable prod...

Страница 95: ...umber of colors Up to 16 8 million Contrast ratio 500 1 Brightness 150 nits typical Pitch resolution Pitch 0 204 0 204 mm Format 1280 800 Configuration RGB vertical stripe Backlight LED lit Character display 80 25 Total power consumption 4 5 W Viewing angle 45 horizontal 35 vertical typical 12 1 inch WXGA display specifications 87 ...

Страница 96: ...curity Seek times typical read including setting Single track 3 ms 3 ms 3 ms 3 ms Average 13 ms 13 ms 13 ms 13 ms Maximum 24 ms 24 ms 24 ms 24 ms Logical blocks 976 773 168 625 141 400 488 397 168 312 581 808 Disc rotational speed 5400 rpm 5400 rpm 5400 rpm 5400 rpm Operating temperature 5 C to 55 C 41 F to 131 F 1 GB 1 billion bytes when referring to hard drive storage capacity Actual accessible ...

Страница 97: ...Dual Layer HD DVD RW CD R and CD RW DVD R DVD R 9 DVD RW DVD R DVD R 9 DVD RW DVD RAM Access time CD DVD HD Random 170 ms 170 ms 230 ms Cache buffer 8 MB Data transfer rate 24X CD ROM 3 600 KB sec 8X DVD 10 800 KB sec 24X CD R 3 600 KB sec 16X CD RW 2 400 KB sec 8X DVD R 10 800 KB sec 4X DVD RW 5 400 KB sec 8X DVD R 10 800 KB sec 4X DVD RW 5 400 KB sec 2 4X DVD R 9 2 700 KB sec 5X DVD RAM 6 750 KB...

Страница 98: ...DVD 10 DVD 18 DVD R DVD RW DVD R DVD RW DVD RAM Write CD R and CD RW DVD R DVD RW DVD R DVD RW DVD RAM Access time CD DVD Random 175 ms 230 ms Cache buffer 2 MB Data transfer rate 24X CD ROM 3 600 KB sec 8X DVD 10 800 KB sec 24X CD R 3 600 KB sec 16X CD RW 2 400 KB sec 8X DVD R 10 800 KB sec 4X DVD RW 5 400 KB sec 8X DVD R 10 800 KB sec 4X DVD RW 5 400 KB sec 2 4X DVD R 9 2 700 KB sec 5X DVD RAM 6...

Страница 99: ...oh XD Picture Card Controller SDA Standard Compliant SD Host Controller IRQ8 High precision event timer IRQ10 nVidia nForce PCI System Management IRQ11 nVidia nForce System Management Controller IRQ12 Synaptics PS 2 Port TouchPad IRQ13 Numeric data processor IRQ14 ATA Channel 0 IRQ15 ATA Channel 1 IRQ16 Broadcom WLAN adapter IRQ17 Standard Enhanced PCI to USB Host Controller IRQ18 Standard OpenHCD...

Страница 100: ...ntroller IRQ8 High precision event timer IRQ10 nVidia nForce PCI System Management IRQ11 nVidia nForce System Management Controller IRQ12 Synaptics PS 2 Port TouchPad IRQ13 Numeric data processor IRQ14 ATA Channel 0 IRQ15 ATA Channel 1 IRQ16 nVidia MCP67M IRQ18 Standard OpenHCD USB Host Controller Standard OpenHCD USB Host Controller IRQ19 Broadcom WLAN adapter IRQ21 HDA Controller IRQ22 Standard ...

Страница 101: ... controller 008F 008F UMA only DMA controller 00A0 00A1 Programmable interrupt controller 00C0 00D1 DMA controller 00D4 00DF DMA controller 00F0 00F1 Numeric data processor 0170 0177 ATA Channel 1 01F0 01F7 ATA Channel 0 0376 0376 ATA Channel 1 03B0 03BB nVidia GeForce8400M GS discrete nVidia MCP67M UMA 03B0 03BB discrete only PCI standard PCI to PCI bridge 03C0 03DF nVidia GeForce8400M GS discret...

Страница 102: ...IDE Controller 30EC 30EF Standard Dual Channel PCI IDE Controller 30F0 30F7 Standard Dual Channel PCI IDE Controller 30F8 30FF discrete only Standard Dual Channel PCI IDE Controller 4000 407F discrete only nVidia GeForce8400M GS 4000 4FFF PCI standard PCI to PCI bridge 5000 5FFF discrete only PCI standard PCI to PCI bridge 94 Chapter 6 Specifications ...

Страница 103: ... System Management Controller 2 KB B0100000 B01007FF RICOH OHCI Compliant IEEE 1394 Host Controller 256 B B0100800 B01008FF SDA Standard Compliant SD Host Controller 256 B B0100C00 B0100CFF Ricoh SD MMC Host Controller 256 B B0101000 B01010FF Ricoh Memory Stick Controller 256 B B0101400 B01014FF Ricoh XD Picture Card Controller 16 KB B0200000 B0203FFF Broadcom WLAN adapter 16 MB B1000000 B1FFFFFF ...

Страница 104: ...Controller 4 KB B0008000 B0008FFF Standard OpenHCD USB Host Controller 4 KB B0009000 B0009FFF nVidia nForce Networking Controller 512 KB B0080000 B00FFFFF nVidia nForce System Management Controller 16 MB B1000000 B1FFFFFF nVidia MCP67M 16 MB B2000000 B2FFFFFF nVidia MCP67M 2 KB B3000000 B30007FF RICOH OHCI Compliant IEEE 1394 Host Controller 256 B B3000800 B30008FF SDA Standard Compliant SD Host C...

Страница 105: ...vides specification and reference information for the screws used in the computer All screws listed in this section are available in the Screw Kit spare part number 517762 001 and the Display Screw Kit spare part number 517743 001 97 ...

Страница 106: ...Phillips PM2 5 7 0 screw Color Quantity Length Thread Head diameter Silver 1 7 0 mm 2 5 mm 5 0 mm Where used One screw that secures the hard drive to the computer 98 Chapter 7 Screw listing ...

Страница 107: ...t secure the hard drive bay cover to the computer screws are secured by C clips 2 One captive screw that secures the WLAN module compartment cover to the computer screw is secured by a C clip 3 Two captive screws that secure the memory module compartment cover to the computer screws are secured by C clips Phillips PM2 5 6 0 captive screw 99 ...

Страница 108: ...Phillips PM2 5x5 0 screw Color Quantity Length Thread Head diameter Silver 5 5 0 mm 2 5 mm 5 0 mm Where used 5 screws that secure the top cover to the computer 100 Chapter 7 Screw listing ...

Страница 109: ... 0x3 0 broadhead screw Color Quantity Length Thread Head diameter Black 4 3 0 mm 2 0 mm 7 0 mm Where used 4 broadhead screws that secure the hinge covers to the display panel Phillips PM2 0x3 0 broadhead screw 101 ...

Страница 110: ...Phillips PM2 0x3 0 screw Color Quantity Length Thread Head diameter Black 3 3 0 mm 2 0 mm 4 5 mm Where used One screw that secures the Bluetooth module to the system board 102 Chapter 7 Screw listing ...

Страница 111: ...Where used 2 screws that secure the power switch board to the base enclosure Phillips PM2 0x3 0 screw 103 ...

Страница 112: ...read Head diameter Silver 9 4 0 mm 2 0 mm 4 5 mm Where used 2 screws that secure the discrete heat sink to the top of the system board Where used 4 screws that secure the discrete heat sink to the bottom of the system board 104 Chapter 7 Screw listing ...

Страница 113: ...Where used 3 screws that secure the UMA heat sink to the bottom of the system board Phillips PM2 0 4 0 screw 105 ...

Страница 114: ...w Color Quantity Length Thread Head diameter Black 16 5 0 mm 2 0 mm 5 0 mm Where used 4 screws that secure the top cover to the computer Where used 3 screws that secure the fan to the system board 106 Chapter 7 Screw listing ...

Страница 115: ...Where used 7 screws that secure the silver metal trim to the base component Where used 2 screws that secure the LED board to the base component Phillips PM2 0 5 0 screw 107 ...

Страница 116: ...Phillips PM2 0x5 0 screw Color Quantity Length Thread Head diameter Silver 13 5 0 mm 2 0 mm 5 0 mm Where used 2 screws that secure the hinges to the display panel 108 Chapter 7 Screw listing ...

Страница 117: ...that secure the display assembly to the computer Where used 2 screws that secure the display bezel to the display assembly Where used 5 screws that secure the system board to the base component Phillips PM2 0x5 0 screw 109 ...

Страница 118: ...y Length Thread Head diameter Black 10 4 0 mm 2 5 mm 5 0 mm Where used 4 screws that secure the display hinge covers to the display panel Where used 4 screws that secure the display panel to the display assembly 110 Chapter 7 Screw listing ...

Страница 119: ...Where used 2 screws that secure the speaker module to the base component Phillips PM2 5 4 0 screw 111 ...

Страница 120: ...Phillips PM2 5x4 0 screw Color Quantity Length Thread Head diameter Silver 5 4 0 mm 2 5 mm 5 0 mm Where used 3 screws that secure the hard drive to the bottom of the computer 112 Chapter 7 Screw listing ...

Страница 121: ...Where used 2 screws that secure the WLAN module to the bottom of the computer Phillips PM2 5x4 0 screw 113 ...

Страница 122: ...Phillips PM3 0 4 0 screw Color Quantity Length Thread Head diameter Silver 4 4 0 mm 3 0 mm 5 0 mm Where used 4 screws that secure the hard drive bracket to the hard drive 114 Chapter 7 Screw listing ...

Страница 123: ...hillips PM2 5 6 0 screw Color Quantity Length Thread Head diameter Black 2 6 0 mm 2 5 mm 5 0 mm Where used 2 screws that secure the WWAN module to the bottom of the computer Phillips PM2 5 6 0 screw 115 ...

Страница 124: ...Phillips PM2 5 9 0 screw Color Quantity Length Thread Head diameter Black 2 9 0 mm 2 5 mm 5 0 mm Where used 2 screws that secure the top cover to the computer 116 Chapter 7 Screw listing ...

Страница 125: ...Phillips PM2 5x10 0 screw Color Quantity Length Thread Head diameter Black 2 10 0 mm 2 5 mm 5 0 mm Where used 2 screws that secure the keyboard to the computer Phillips PM2 5x10 0 screw 117 ...

Страница 126: ...m restore points operating system feature System restore points allow you to reverse undesirable changes to your computer by restoring the computer to an earlier state Recovering a program or driver Recovery Manager software feature This feature helps you reinstall a program or driver without performing a full system recovery Performing a full system recovery Recovery Manager software feature With...

Страница 127: ...s have a much higher capacity than CDs If you use CDs up to 20 discs may be required whereas only a few DVDs or BDs are required NOTE Read write discs such as CD RW DVD RW double layer DVD RW and BD RE rewritable Blu ray discs are not compatible with the Recovery Manager software The computer must be connected to AC power during this process Only one set of recovery discs can be created per comput...

Страница 128: ... the screen b Copy the screen To copy only the active window press alt fn prt sc To copy the entire screen press fn prt sc c Open a word processing document and then select Edit Paste Using system restore points When you back up your system you are creating a system restore point A system restore point allows you to save and name a snapshot of your hard drive at a specific point in time You can th...

Страница 129: ...ndow opens 6 Follow the on screen instructions Restore to a previous date and time To revert to a restore point created at a previous date and time when the computer was functioning optimally follow these steps 1 Select Start Control Panel System and Maintenance System 2 In the left pane click System protection 3 Click the System Protection tab 4 Click the System Restore button and then click Next...

Страница 130: ...einstalled from the disc provided by the manufacturer Recovering from the recovery discs To restore the system from the recovery discs 1 Back up all personal files 2 Insert the first recovery disc into the optical drive and restart the computer 3 Follow the on screen instructions Recovering from the dedicated recovery partition select models only NOTE If your computer includes an SSD you may not h...

Страница 131: ...ssignments Audio in microphone Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground Audio out headphone Pin Signal 1 Audio out left channel 2 Audio out right channel 3 Ground External monitor Audio in microphone 123 ...

Страница 132: ...nalog 3 Blue analog 4 Not connected 5 Ground 6 Ground analog 7 Ground 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 124 Chapter 9 Connector pin assignments ...

Страница 133: ...ata 2 4 TMDS data 1 5 TMDS data 1 shield 6 TMDS data 1 7 TMDS data 0 8 TMDS data 0 shield 9 TMDS data 0 10 TMDS clock 11 TMDS clock shield 12 TMDS clock 13 CEC 14 Not connected 15 DDC clock 16 DDC data 17 Ground 18 5V power 19 Hot plug detect 20 Shell HDMI 125 ...

Страница 134: ... 45 network Pin Signal 1 Transmit 2 Transmit 3 Receive 4 Unused 5 Unused 6 Receive 7 Unused 8 Unused Universal Serial Bus Pin Signal 1 5 VDC 2 Data 3 Data 4 Ground 126 Chapter 9 Connector pin assignments ...

Страница 135: ...ents listed below are applicable to all countries or regions The length of the power cord set must be at least 1 5 m 5 0 ft and no more than 2 0 m 6 5 ft All power cord sets must be approved by an acceptable accredited agency responsible for evaluation in the country or region where the power cord set will be used The power cord sets must have a minimum current capacity of 10 amps and a nominal vo...

Страница 136: ...ug must be a two pole grounding type with a NEMA 5 15P 15 A 125 V or NEMA 6 15P 15 A 250 V configuration 3 The appliance coupler flexible cord and wall plug must bear a T mark and registration number in accordance with the Japanese Dentori Law The flexible cord must be Type VCT or VCTF 3 conductor 1 00 mm conductor size The wall plug must be a two pole grounding type with a Japanese Industrial Sta...

Страница 137: ... when removing these components NOTE Materials Disposal This HP product contains mercury in the backlight in the display assembly that might require special handling at end of life Disposal of mercury may be regulated because of environmental considerations For disposal or recycling information contact your local authorities or see the Electronic Industries Alliance EIA Web site at http www eiae o...

Страница 138: ... 1 and screws 2 that secure the display bezel to the display assembly 2 Lift up and out on the left and right inside edges 1 and the top and bottom inside edges 2 of the display bezel until the bezel disengages from the display assembly 3 Remove the display bezel 3 130 Chapter 11 Recycling ...

Страница 139: ...ssembly to the display enclosure 6 Remove the display panel assembly 2 from 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 9 Use a sharp edged tool to cut the tape 1 that secures the sides of the display panel to the display panel frame Display 131 ...

Страница 140: ...splay panel 11 Remove the screws 1 that secure the backlight cover to the display panel 12 Lift the top edge of the backlight cover 2 and swing it outward 13 Remove the backlight cover 14 Turn the display panel right side up 132 Chapter 11 Recycling ...

Страница 141: ...l 16 Turn the display panel upside down 17 Remove the backlight frame from the display panel WARNING The backlight contains mercury Exercise caution when removing and handling the backlight to avoid damaging this component and causing exposure to the mercury Display 133 ...

Страница 142: ...panel 20 Remove 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 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 134 Chapter 11 Recycling ...

Страница 143: ...mber 26 57 Bluetooth module cable illustrated 23 boot options 85 boot order 85 button sound 84 buttons TouchPad 6 TouchPad on off 6 wireless 10 C Cable Kit contents 23 spare part number 19 23 30 cables service considerations 32 caps lock light identifying 8 Card Reader Power Saving 84 chipset product description 1 CMOS clearing 36 compartments memory module 13 wireless module 13 WWAN module 13 com...

Страница 144: ...t number 21 24 28 40 hard drive self test 85 HDMI port identifying 12 pin assignments 125 headphone jack identifying 11 pin assignments 123 headset spare part number 25 26 heat sink removal 76 spare part numbers 18 76 I I O address specifications 93 integrated webcam light identifying 5 internal microphone identifying 5 interrupt specifications 91 92 J jacks audio in 11 audio out 11 RJ 45 network ...

Страница 145: ...e 1 microphone 2 modem 2 operating system 4 optical drives 2 pointing device 3 ports 3 power requirements 3 processor 1 product name 1 security 4 serviceability 4 webcam 2 wireless 2 product name 1 R recovery program or driver 118 using a dedicated recovery partition 122 using recovery discs 122 recovery discs 118 122 Recovery Manager 118 recovery partition 118 122 recovery system 118 removal repl...

Страница 146: ... regions 6 TouchPad light identifying 6 TouchPad on off button 6 transporting guidelines 34 U unknown password 36 USB cable illustrated 23 USB ports identifying 11 12 pin assignments 126 V vents identifying 12 13 Virtualization Technology 84 W webcam identifying 5 product description 2 webcam microphone cable spare part number 17 29 webcam microphone module removal 72 73 spare part number 17 29 72...

Страница 147: ......

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