HP G72-c55DX HP G72 Notebook PC - Maintenance and Service Guide
HP G72-c55DX Manual
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- HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 1
HP G72 Notebook PC Maintenance and Service Guide SUMMARY This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides comprehensive information on identifying computer features, components, and spare parts; troubleshooting computer problems; and performing - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 2
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 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 3
components on page 18, Mass storage devices on page 27, Sequential part number listing on page 30, Hard drive on page 43. ● Added newly supported memory modules to spare parts listings in the following locations: Computer major components on page 18, Sequential part number listing on page 30, Memory - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 4
iv MSG revision history ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 5
Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 6
vi Safety warning notice ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 7
Miscellaneous parts ...29 Sequential part number listing ...30 4 Removal and replacement procedures ...35 Preliminary replacement requirements 35 Tools required ...35 Service considerations ...35 Plastic parts ...35 Cables and connectors 36 Drive handling 36 Grounding guidelines ...37 ENWW vii - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 8
Electrostatic discharge damage 37 Packaging and transporting guidelines 38 Workstation guidelines 38 Equipment guidelines 39 Component replacement procedures 40 Serial number ...40 Computer feet ...41 Battery ...42 Hard drive ...43 Optical drive ...46 WLAN module ...48 Memory module ...51 RTC - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 9
factory settings in Computer Setup 91 Computer Setup menus ...92 File menu ...92 Security menu 93 Diagnostics menu 93 System Configuration the recovery discs 108 Recovering from the dedicated recovery partition (select models only 108 Linux backup and recovery ...109 8 Connector pin assignments - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 10
10 Recycling ...119 Battery ...119 Display ...119 Index ...127 x ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 11
Name Processors Chipset Graphics ENWW Description HP G72 Notebook PC Intel® Arrandale™ i5-540M Processor PCs) (for model 1.2 only) ATi Robson XT (ATI Mobility Radeon™ HD6370) with 1GB of dedicated video memory (128Mx16 DDR3 800MHz x 4 PCs) (for model 1.2 only) HP G72 Discrete √ √ HP G72 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 12
drives Webcam (select models only) Switchable Discrete Graphics ● ATi Robson XT (ATI Mobility Radeon™ HD6370) with 512MB of dedicated memory (64Mx16 DDR3 800 MHz x 4 PCs) ● ATi Robson XT (ATI Mobility Radeon™ HD6370) with 1GB of dedicated memory (128Mx16 DDR3 800 MHz x 4 PCs) Support for BD or HD - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 13
select models only) RJ-45 (Ethernet) USB (3; one is an eSATA/USB port) VGA (Dsub 15-pin) supporting 1600 × 1200 external resolution at 75 Hz Multi-pin AC power Full-size keyboard with numeric keypad, 43.9-cm (17.3in) TouchPad with 2 buttons and 2-way scroll (taps enabled as default) HP G72 Discrete - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 14
cable plug support Kensington Security Lock Preinstalled: Windows® 7 Home Premium (32 & 64 bit) Windows 7 Home Basic (32 & 64 bit) Free DOS End-user replaceable parts: AC adapter Battery (system) Hard drive Memory module Optical drive Mini-card devices HP G72 Discrete √ √ √ √ √ HP G72 UMA - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 15
component identification Identifying the hardware Components included with the computer might vary by region and model. The illustrations in this chapter identify the standard features on most computer models. To see a list of hardware installed in the computer: 1. Select Start > My Computer. 2. In - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 16
Top components TouchPad Component (1) TouchPad light (2) TouchPad zone (3) Left TouchPad button (4) Right TouchPad button *This table describes factory settings. Description Off-Touchpad is on. Amber-Touchpad is off. Moves the pointer and selects or activates items on the screen. Press - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 17
Lights Component (1) TouchPad light (2) Caps lock light (3) Power light (4) Wireless light (5) num lk light Description ● Off-TouchPad is enabled. ● Amber-TouchPad is disabled. On-Caps lock is on ● On-The computer is on. ● Flashing-The computer is in Sleep. ● Off-The computer is off or in - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 18
and Security > Power Options. (2) Speakers grill Two integrated speakers produce sound. *This table describes factory settings. For information about changing factory settings, see the user guides located in Help and Support. 8 Chapter 2 External component identification ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 19
Keys Component (1) esc key (2) fn key (3) Windows logo key (4) Windows applications key (5) Integrated numeric keypad keys (6) Action keys Description Displays system information when pressed in combination with the fn key. Displays system information when pressed in conjunction with - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 20
Display Component (1) Internal microphone (2) Integrated webcam (select models only) (3) Webcam light (select models only) Description Records sound. Records audio and video and captures still photographs. On-The webcam is in use. 10 Chapter 2 External component identification ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 21
Right-side components Component (1) Optical drive (2) Optical drive light on release button (3) USB port (4) RJ-11 (modem) jack (select models only) (5) AC adapter light (6) Power connector (7) Security cable slot Description Reads and writes to optical discs. Flashing-The optical - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 22
or any compatible digital or audio component. NOTE: Depending on the computer model, the computer might include an HDMI port or a USB port at this powered stereo speakers, headphones, earbuds, a headset, or television audio. Supports the following optional digital card formats: ● Memory Stick (MS) - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 23
the hard drive. Contains two memory module slots and, on select models, the wireless LAN (WLAN) device. CAUTION: To prevent an unresponsive module to restore computer functionality, and then contact technical support through Help and Support. Wireless antennas At least two antennas send and receive - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 24
around the antennas free from obstructions. To review the wireless regulatory notices, see to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices are located in Help and Support. 14 Chapter 2 External component identification ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 25
Additional hardware components Component (1) Power cord* (2) AC adapter (3) Battery* *Power cords vary in appearance by country or region. Description Connects an AC adapter to an AC outlet. Converts AC power to DC power. Powers the computer when the computer is not plugged into external - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 26
16 Chapter 2 External component identification ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 27
number (p/n) (4) Warranty period (5) Model description ENWW Description The name affixed to service technician to determine what components and parts are needed. The duration of the warranty period for the computer. An alphanumeric identifier used to locate documents, drivers, and support - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 28
Computer major components 18 Chapter 3 Illustrated parts catalog ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 29
display assembly internal component spare part information, see Display assembly components on page 24. ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) 612094-001 612095-001 620538-001 Keyboard (includes keyboard cable) for use in - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 30
1.0 and 1.1 only) 597623-001 ● Intel Arrandale i5-430 Processor (2.26 GHz, 3 MB total L3 cache, 1066 MHz)-Dual 597624-001 Core 35 W (for models 1.0 and 1.1 only) ● Intel Arrandale i3-370 Processor (2.4 GHz, 3 MB L3 cache, 1066 MHz)-Dual Core 613584-001 35 W ● Intel Arrandale i5-450M Processor - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 31
Item (11) Description Spare part number ● 2 GB 598856-001 ● 4 GB (for models 1.1 and 1.2 only) 599092-001 Wireless (WLAN) module ● Atheros AR9285 802.11b/g/n 1x1 WiFi Adapter for use in Afghanistan, Albania, 518436-002 Algeria, Andorra, Angola, Antigua - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 32
Item (12) (13) (14) (15) (16) (17) (18) (19) (20) Description Spare part number ● Realtek RTL8191SE 802.11b/g/n 1x1 WiFi Adapter (for models 1.0 and 1.1 only) 593533-001 ● Broadcom 4313 802.11b/g/n 1x1 WiFi Adapter 593836-001 ● Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070 Bluetooth 2.1+EDR - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 33
(22) (23) (24) Description ● Charcoal computer models (for models 1.1 and 1.2 only) Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double-Layer Drive for use with: ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) Optical drive cable - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 34
Display assembly components Item (1) (2) (3) (4) Description Display bezel: Webcam module 43.9-cm (17.3-in) high definition, Brightview, display panel (includes display panel cable) Display bracket (with hinges) Spare part number 612102-001 612109-001 612097-001 612104-001 24 Chapter 3 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 35
001 Microphone (includes cable) 612110-001 Display back cover (includes logo) for use with: ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) 612098-001 612099-001 620539-001 LCD cable (not illustrated; includes webcam module cable - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 36
Plastics Kit Item Description Plastics kit (1) Hard drive bay cover (includes captive screws) (2) Wireless/memory module mini-card compartment cover (includes captive screw) Spare part number 616497-001 26 Chapter 3 Illustrated parts catalog ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 37
bracket) DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe for use with: ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) 614549-001 616482-001 620541-001 Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 38
Item Description ● 160 GB, 7200 rpm (for models 1.0 and 1.1 only) Hard drive hardware kit (not illustrated, includes bracket and screws) Spare part number 615082-001 615086-001 28 Chapter 3 Illustrated parts catalog ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 39
wire, black, 1.83-m (for use with both HP G62 and Presario CQ 62 computer models) for use in: ● Denmark (for models 1.0 and 1.1 only) 490371-081 ● Europe (for models 1.0 and 1.1 only) 490371-021 ● Israel (for models 1.0 and 1.1 only) ● Italy (for models 1.0 and 1.1 only) 490371-BB1 490371-061 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 40
, Turkmenistan, Tuvalu, Uganda, United Arab Emirates, United Kingdom, Uruguay, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zambia, and Zimbabwe Bluetooth module (for model 1.0 only) Intel Core i7-620M Processor (4M cache, 2.66 GHz, SC turbo up to 3.33 GHz) 30 Chapter 3 Illustrated parts catalog - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 41
Virgin Islands, the United States, Uzbekistan, Vanuatu, Venezuela, Vietnam, Yemen, Zaire, Zambia, and Zimbabwe Realtek RTL8191SE 802.11b/g/n 1x1 WiFi Adapter (for models 1.0 and 1.1 only) Battery, 6-cell, 2.20 Ah, 47 Wh Battery, 6-cell, 2.55 Ah, 55 Wh Broadcom 4313 802.11b/g/n 1x1 WiFi Adapter Intel - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 42
Definition display panel (includes display panel and backlight cables) Display back cover for use with biscotti computer models Display back cover for use with matte black computer models Display Bezel LCD cable (includes webcam module cable) Display hinge kit (includes left and right display hinges - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 43
with HDMI card reader and without modem for matte black computer models Top cover (includes TouchPad board) for use in biscotti computer models Top cover (includes TouchPad board) for use in matte black computer models Touchpad button board (includes bracket and cable) USB board Power button - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 44
battery Cable kit 43.9-cm (17.3-in) HD, light-emitting diode display assembly for charcoal computer models (for models 1.1 and 1.2 only) Display back cover for use with charcoal computer models (for models 1.1 and 1.2 only) Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double-Layer Drive for use - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 45
screwdriver ● Phillips P0 and P1 screwdrivers Service considerations Before disassembly or assembly procedures, review and adhere to all service considerations. NOTE: As you remove pressure only at the points designated in the maintenance instructions. ENWW Preliminary replacement requirements 35 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 46
Cables and connectors CAUTION: When servicing the computer, be sure that cables are placed in their proper locations during the reassembly process. Improper cable placement can damage the computer. Cables must - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 47
Grounding guidelines Electrostatic discharge damage Electronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure determine the degree of sensitivity. Networks built into many integrated circuits provide some protection, but in many cases, ESD contains enough - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 48
work surface and use properly grounded tools and equipment. ● Use conductive field service tools, such as cutters, screwdrivers, and vacuums. ● When fixtures must directly input signals before inserting or removing connectors or test equipment. 38 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 49
with ground cords of one megohm resistance ● Static-dissipative tables or floor mats with hard ties to the ground ● Field service kits ● Static awareness labels ● Material-handling packages ● Nonconductive plastic bags, tubes, or boxes ● Metal tote boxes ● Electrostatic voltage levels and - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 50
the product's hardware components. The part number helps a service technician to determine what components and parts are needed. The duration of the warranty period for the computer. An alphanumeric identifier used to locate documents, drivers, and support for the computer. 40 Chapter 4 Removal and - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 51
Computer feet Description Rubber Feet Kit Spare part number 616499-001 The computer feet are adhesive-backed rubber pads. The feet attach to the base enclosure in the locations illustrated below. ENWW Component replacement procedures 41 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 52
Battery Description 6 cell, 2.20 Ah, 47 Wh 6 cell, 2.55 Ah, 55 Wh Spare part number 593553-001 593554-001 Before disassembling the computer: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, and then shut it down through the operating - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 53
1.1 only) 640 GB, 5400 rpm 500 GB, 7200 rpm 320 GB, 5400 rpm (for model 1.1 only) 320 GB, 7200 rpm 250 GB, 7200 rpm 160 GB, 7200 rpm (for models 1.0 and 1.1 only) Hard drive hardware kit (not illustrated, includes connector, bracket, and screws) Spare part number 603787-001 603785-001 615085-001 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 54
3. Lift the left side of the hard drive cover (2), swing it forward, and remove the cover (3). The hard drive cover is included in the plastics kit, spare part number 616497-001. 4. Remove the four Phillils PM2.5x5.0 screws (1) that secure the hard drive to the computer. Use the mylar tabs (2) to - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 55
6. Grasp the two attached Mylar tabs and pull the bracket straight up to remove it from the hard drive (2). Reverse this procedure to install the hard drive. ENWW Component replacement procedures 45 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 56
Drive for use with: ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) Spare part number icon. 3. Insert a thin tool, such as a screw driver (2), into the release access slot in the hard drive bay. 46 Chapter 4 Removal - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 57
4. Grasp the bezel and slide the optical drive out of the computer (3). 5. To replace the optical drive bracket, position the optical drive with the optical drive bracket toward you. 6. Remove the two Phillips PM2.0×3.0 screws (1) that secure the optical drive bracket to the optical drive. 7. - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 58
AR9285 802.11b/g/n 1x1 WiFi Adapter Intel Centrino Wireless-N 1000 802.11b/g/n 1x2 WLAN module Realtek RTL8191SE 802.11b/g/n 1x1 WiFi Adapter (for models 1.0 and 1.1 only) Broadcom 4313 802.11b/g/n 1x1 WiFi Adapter Broadcom 4313 802.11b/g/n 1x1 WiFi and 2070 Bluetooth 2.1+EDR Combo adapter (BT3.0+HS - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 59
4. Lift the cover off the computer (3). The wireless/memory module compartment cover is included in the plastics kit, spare part number 616497-001. 5. Disconnect the main antenna cable (1) and the auxiliary antenna cable (2) from the wireless module. 6. Remove the Phillips PM2.0×3.0 screw (3) that - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 60
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. NOTE: WLAN modules are designed with a notch (5) to prevent incorrect insertion into the WLAN module slot. Reverse this procedure - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 61
Memory module Description 1 GB, 1066 MHz DDR3 2 GB, 1066 MHz DDR3 4 GB, 1066 MHz DDR3 (for models 1.1 and 1.2 only) Spare part number 598859-001 598856-001 599092-001 Before removing the memory module: 1. Shut down the computer. If you are unsure whether - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 62
6. Remove the module (2) by pulling it 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 a memory module. RTC battery Description RTC battery Spare part number 616501-001 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 63
4. Lift the cover off the computer (3). The wireless/memory module compartment cover is included in the plastics kit, spare part number 616497-001. NOTE: Small tabs hold the cover in place. Firmly pull up on the cover to release the tabs. 5. Unplug the RTC battery from the system board (1). 6. Use a - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 64
and 1.1 only) For use in Belgium (for models 1.0 and 1.1 only) For use in the Czech Republic (for models 1.0 and 1.1 only) For use in France (for models 1.0 and 1.1 only) For use in French Canada (for models 1.1 and 1.2 only) For use in Germany (for models 1.0 and 1.1 only) For use in Greece (for - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 65
2. Remove the three Phillips PM2.5×5.0 screws that secure the keyboard to the computer. 3. Turn the computer display-side up with the front toward you. 4. Open the computer as far as possible. 5. Release the tabs along the left (1) and right (2) edges of the keyboard using a thin flat-bladed - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 66
7. Release the zero insertion force (ZIF) connector (1) to which the keyboard cable is attached and disconnect the keyboard cable (2) from the system board. 8. Remove the keyboard. Reverse this procedure to install the keyboard. 56 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 67
Top cover Description For use with biscotti computer models For use with matte black computer models For use with charcoal computer models (for models 1.1 and 1.2 only) Spare part number 616490-001 616492-001 620542-001 Before removing the switch cover: 1. Shut down the computer. If you are unsure - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 68
2. Remove four Phillips PM2.5x3 and three Phillips PM2.5x6.5 screws in the battery bay, and remove ten Phillips PM2.5x6.5 screws on the base enclosure. The top cover screws are identified by a triangle icon embossed on the base enclosure. 3. Turn the computer display-side up with the front toward - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 69
6. Release the power button ZIF connector (1), speaker cable (2), touchpad ZIF connector (3), and touchpad button ZIF connector (4). 7. Lift the rear edge of the top cover (1) until the top cover disengages from the base enclosure. Remove the top cover (2). NOTE: The TouchPad is glued to the top - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 70
Speaker assembly Description Speaker assembly (includes cable) Spare part number 616498-001 Before removing the speaker assembly: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, and then shut it down through the operating system. 2. - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 71
Power button board Description Power button board Spare part number 616495-001 Before removing the power button board: 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 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 72
TouchPad button board Description Touchpad button board (includes bracket and cable) Spare part number 616493-001 Before removing the TouchPad button board: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, and then shut it down - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 73
Modem module Description 56K V.92 data/fax modem (select models only) (for model 1.0 only) Spare part number 510100-001 Before removing the modem module: 1. Shut down the computer. If you are unsure whether the computer is off or - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 74
Reverse the above procedure to install the modem module, and be sure that the connector on the bottom of the modem module connects firmly into the system board. 64 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 75
USB board Description USB board Spare part number 616494-001 Before removing the USB board: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, and then shut it down through the operating system. 2. Disconnect all external devices - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 76
Reverse this procedure to install the USB board. 66 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 77
Power connector Description Power connector (includes cable) Spare part number 616496-001 Before removing the power connector cable: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn on the computer, and then shut it down through the operating system. - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 78
Bluetooth module Description Bluetooth module (for model 1.0 only) Bluetooth module cable (for model 1.0 only) Spare part number 537921-001 605904-001 Before removing the Bluetooth module: 1. Shut down the computer. If you are unsure whether the computer is - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 79
(15.6-in) High Definition (HD), light-emitting diode (LED) display assembly for use in: ● Biscotti computer models ● Matte black computer models ● Charcoal computer models (for models 1.1 and 1.2 only) Spare part number 612094-001 612095-001 620538-001 Before removing the display assembly: 1. Shut - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 80
the system board and release it from the clips that attach it to the system board. CAUTION: Support the display assembly when removing the display screws in the following steps. Failure to support the display assembly can result in damage to the assembly and other components. 6. Remove the five - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 81
display back cover. 10. Remove the display bezel (4). Reverse this procedure to install the display bezel. 11. To replace the webcam module (select models only), lift the webcam module as far from the display enclosure as the webcam module cable allows. ENWW Component replacement procedures 71 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 82
12. Disconnect the webcam module cable (1) from the webcam module, and remove the webcam module (2). The webcam module is available using spare part number 612109-001. Reverse this procedure to install the webcam module. 13. To replace the display hinge covers, remove the two Phillips PM2.5×6.0 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 83
16. Remove the display panel (2) from the display enclosure. The display panel is available using the spare part number 612097-001. Reverse this procedure to install the display panel. 17. To replace the display panel brackets, remove the three Phillips PM2.0×3.0 screws (1) that secure each bracket - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 84
20. Lift up to remove the antenna transceivers (3). The wireless antenna transceivers with cable is available using spare part number 612108-001. Reverse this procedure to install the display wireless antenna transceivers. 74 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 85
. Description HD 5430/1 G discrete system board with card reader 1.1 (for model 1.1 only) HD 5430/512 MB discrete system board with card reader 1.1 (for model 1.1 only) HD 5430/512 MB discrete system board with card reader (for model 1.0 only) HD 5430/1 G discrete system board with card reader (for - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 86
h. Modem module (see Modem module on page 63) i. Display assembly (see Display assembly on page 69) Remove the following cables from the system board: ● Power connector cable (see Power connector on page 67) ● USB board cable (see USB board on page 65) ● Bluetooth module cable (see Bluetooth module - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 87
5. To replace the modem module cable, remove the RJ-11 connector cable from the clips (1), and then lift the connector straight up (2) and out of the computer. The modem module cable is available with the cable kit using spare part number 616502-001. Reverse this procedure to install the modem - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 88
Reverse the preceding procedure to install the system board. 78 Chapter 4 Removal and replacement procedures ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 89
board on page 75) Remove the fan/heat assembly (fan/heat sink appearance might vary): NOTE: Steps 1 through 4 apply only to computer models equipped with graphics subsystems having UMA memory. 1. Turn the system board right-side up, with the front toward you. ENWW Component replacement procedures - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 90
side to detach the assembly. 4. Remove the fan/heat sink assembly (2) by lifting straight up. NOTE: Steps 5 through 8 apply only to computer models equipped with graphics subsystems having discrete memory. 5. Turn the system board right-side up, with the front toward you. 80 Chapter 4 Removal and - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 91
6. Disconnect the fan cable from the system board. 7. Loosen the two Phillips captive screws (1) and four Phillips spring-loaded captive screws (2) that secure the fan/heat sink assembly. NOTE: Due to the adhesive quality of the thermal material located between the fan/heat sink assembly and system - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 92
NOTE: Thermal pads and thermal paste are included with all fan/heat sink assembly, system board, and processor spare part kits. The following illustration shows the locations for thermal material on systems with UMA graphics subsystems. The thermal material must be thoroughly cleaned from the - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 93
and 1.1 only) 597623-001 Intel Arrandale i5-430 Processor (2.26 GHz, 3 MB total L3 cache, 1066 MHz)-Dual Core 35 W (for models 1.0 and 1.1 only) 597624-001 Intel Arrandale i3-370 Processor (2.4 GHz, 3 MB L3 cache, 1066 MHz)-Dual Core 35 W 613584-001 Intel Arrandale i5-450M Processor (2.4 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 94
4. Remove the battery (see Battery on page 42). 5. Remove the following components: a. Hard drive (see Hard drive on page 43) b. Optical drive (see Optical drive on page 46) c. Keyboard (see Keyboard on page 54) d. Top cover (see Top cover on page 57) e. Speaker assembly (see Speaker assembly on - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 95
5 Setup Utility Computer Setup in Windows 7 To view the drives installed on the computer, select Start > Computer. On models with a secondary hard drive (drive D), the optical drive becomes drive E. The next drive added to the system, such as a new USB drive, is assigned the - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 96
the enter key. Changes goes into effect immediately. Navigating and selecting in Setup Utility Because Setup Utility is not Windows based, it does not support the TouchPad. Navigation and selection are by keystroke. ● To choose a menu or a menu item, use the arrow keys. ● To choose an item in a list - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 97
Restoring default settings in Setup Utility The following procedure explains how to restore Setup Utility default settings. If Setup Utility is not already running, begin at step 1. If Setup Utility is already running, begin at step 2. 1. Open Setup Utility by turning on or restarting the computer. - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 98
Some of the Setup Utility menu items listed in this chapter might not be supported by the computer. Main menu Select System information To do this ● View size, system BIOS, and keyboard controller version (select models only). Security menu Select Administrator password Power-On password To - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 99
the internal network adapter. ● Boot Order―Set the boot order for: ◦ Notebook Hard Drive ◦ Internal CD/DVD ROM Drive ◦ USB Diskette on Key/USB Hard Self Test Secondary Hard Disk Self Test (select models only) Memory Test To do this Run a comprehensive self-test on the hard drive. NOTE: On models - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 100
Setup menu items listed in this guide might not be supported by the computer. NOTE: Pointing devices are not supported in Computer Setup. Use the keyboard preferences, use the arrow keys to select File > Ignore Changes And Exit. Then follow the instructions on the screen. ● To save your preferences - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 101
box opens, press the f10 key. 4. To save your preferences and exit Computer Setup, use the arrow keys to select File > Save Changes And Exit. Then follow the instructions on the screen. Your preferences go into effect when the computer restarts. NOTE: Your password settings and security settings are - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 102
an overview of Computer Setup options. NOTE: Some of the Computer Setup menu items listed in this chapter might not be supported by the computer. File menu Select System information Restore Defaults Ignore Changes And Exit Save Changes And Exit To do this ● View identification information for - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 103
the menu items listed in this section might not be supported by the computer. Select Setup Password Power-On Password drive is destroyed permanently. Diagnostics menu Select HDD Self-Test Options Memory Check To do this Run a comprehensive self-test on any hard drive in the system or on any - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 104
2nd boot device-USB floppy ◦ 3rd boot device-USB SuperDisk ◦ 4th boot device-Notebook hard drive ◦ 5th boot device-USB hard disk ◦ 6th boot device-Network controller and left ctrl key. ● Enable/disable USB legacy support. When enabled, USB legacy support allows the following: ◦ Use of a USB keyboard - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 105
Select Built-in device options Port options To do this ● Enable/disable embedded WLAN Device Radio. ● Enable/disable embedded Bluetooth Device Radio. ● Enable/disable Network Interface Controller (NIC) ● Enable/disable LAN/WLAN Switching. ● Enable/disable Wake on LAN. ● Enable/disable the - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 106
96 Chapter 5 Setup Utility ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 107
6 Specifications Computer specifications Dimensions Depth Width Height (front to rear) Weight (lowest weight configuration) Input power Operating voltage Operating current Temperature Operating (not writing to optical disc) 26.9 cm (10.59 in) 41.2 cm (16.22 in) 3.24 to 3.84 cm (1.28 to 1.51 in) < - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 108
Height Width Diagonal Number of colors Contrast ratio Brightness Pixel resolution Pitch Format Configuration Backlight Character display Total power consumption Viewing angle 23.3 cm (9.17 in) 39.8 cm (15.6 in) 43.9 cm (17.3) Up to 16.8 million 300:1 (typical) 200 nits (typical) 0.259 × 0.259 mm - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 109
referring to hard drive storage capacity. Actual accessible capacity is less. Actual drive specifications may differ slightly. NOTE: Certain restrictions and exclusions apply. Contact technical support for details. ENWW Hard drive specifications 99 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 110
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe specifications Applicable disc Read Write Random access time DVD CD Cache buffer Data transfer rate 24X CD-ROM 8X DVD-ROM 24X CD-R 16X CD-RW 8X DVD+R 4X DVD+RW 8X DVD-R 4X DVD-RW 2.4X DVD+R(9) 5X DVD-RAM Transfer mode CD-DA, CD - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 111
Blu-ray ROM with LightScribe DVD±R/RW SuperMulti Double-Layer Drive specifications Applicable disc Read Write Random access time BD DVD CD Cache buffer Data transfer rate 24X CD-ROM 8X DVD-ROM 4X BD 24X CD-R 16X CD-RW 8X DVD+R 4X DVD+RW 8X DVD-R 4X DVD-RW 2.4X DVD+R(9) 5X DVD-RAM 1X BD-ROM 1X BD-R - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 112
input/output (I/O) ports, interrupt request (IRQ) lines, and memory addresses. If two devices require the same resource and create a device conflict, manually change the resource settings in Device Manager to be sure each setting is unique. CAUTION: Improperly changing resource settings can disable - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 113
HP recommends creating recovery discs immediately after software setup. As you add new software and data files driver (Recovery Manager software feature). This feature helps you reinstall a program or driver works from a dedicated recovery partition (select models only) on the hard drive or from - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 114
model, you might have one of the following backup and recovery solutions: ● Roxio BackOnTrack ● HP Recovery Manager NOTE: For detailed information, perform a search for these topics in Help and Support. Creating recovery discs HP the on-screen instructions. 104 Chapter 7 Backup and recovery ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 115
when backing up: ● Create system restore points using the Windows System Restore feature, and periodically copy them to disc. ● Store personal files in the Documents library and back up this folder periodically. ● Back up templates stored in their associated programs. ● Save customized settings in - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 116
an hour, depending on file size and the speed of the computer. 1. Select Start > All Programs > Maintenance > Backup and Restore. 2. Follow the on-screen instructions to set up and create changing Windows settings. See Help and Support for more information. 106 Chapter 7 Backup and recovery ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 117
files and settings. When to create restore points ● Before you add or extensively screen instructions. Performing a recovery NOTE: You can recover only files that you have previously backed up. HP discs or from a dedicated recovery partition (select models only) on the hard drive. However, if - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 118
in repair features, such as System Restore and driver roll-back capabilities. Try these features before using 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 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 119
removed. The f11 recovery tool reinstalls the original operating system and HP programs and drivers that were installed at the factory. Software, drivers, and updates not installed by HP must be manually reinstalled. Personal files must be restored from a backup. To recover the original hard drive - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 120
110 Chapter 7 Backup and recovery ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 121
8 Connector pin assignments Audio-out (headphone) Pin Signal 1 Audio out, left channel 2 Audio out, right channel 3 Ground Audio-in (microphone) Pin Signal 1 Audio signal in 2 Audio signal in 3 Ground ENWW Audio-out (headphone) 111 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 122
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 analog 9 +5 VDC 10 Ground 11 Monitor detect 12 DDC 2B data 13 Horizontal sync 14 Vertical sync 15 DDC 2B clock 112 Chapter 8 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 123
RJ-11 (modem) Pin 1 2 3 4 5 6 RJ-45 (network) Signal Unused Tip Ring Unused Unused Unused Pin 1 2 3 4 5 6 7 8 ENWW Signal Transmit + Transmit Receive + Unused Unused Receive Unused Unused RJ-11 (modem) 113 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 124
HDMI Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Signal TMDS data 2+ TMDS data 2 shield TMDS data 2- TMDS data 1+ TMDS data 1shield TMDS data 1- TMDS data 0+ TMDS data 0 shield TMDS data 0- TMDS clock+ TMDS clock shield TMDS clock- CEC No connect DDC clock DDC data Ground +5V power Hot - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 125
Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground ENWW Universal Serial Bus 115 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 126
116 Chapter 8 Connector pin assignments ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 127
9 Power cord set requirements The wide range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC or from 220 to 240 volts AC. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 128
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 France UTE 1 Germany VDE 1 Italy IMQ 1 Japan METI 3 The Netherlands - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 129
them carefully. NOTE: Materials Disposal. This HP product contains mercury in the backlight in the www.eiae.org. This section provides disassembly instructions for the display assembly. The display provided in this chapter are general disassembly instructions. Specific details, such as screw sizes, - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 130
Perform the following steps to disassemble 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 on the left and right inside edges (1) and the top and bottom inside edges (2) of the display bezel until the - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 131
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 assembly to the display enclosure. 6. Remove the display panel assembly (2) from the display enclosure. ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 132
7. Turn the display panel assembly upside down and remove all screws that secure the display panel frame to the display panel. 8. Use a sharp-edged 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 display - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 133
14. Remove the backlight cables (1) from the clip (2) in the display panel. 15. Turn the display panel upside down. 16. 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 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 134
17. Remove the backlight from the backlight frame. 18. Disconnect the display cable (1) from the LCD panel. 19. Remove the screws (2) that secure the LCD panel to the display rear panel. 20. Release the LCD panel (3) from the display rear panel. 21. Release the tape (4) that secures the LCD panel - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 135
22. Remove the LCD panel. 23. Recycle the LCD panel and backlight. ENWW Display 125 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 136
126 Chapter 10 Recycling ENWW - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 137
94 button sound 89 buttons power 8 TouchPad right/left 6 C cables, service considerations 36 camera module removal 72 spare part number 72 camera, product description part number 41 Computer Setup accessing 90 Diagnostics menu 93 File menu 92 navigating and selecting 90 restoring factory settings 91 - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 138
41 File menu support, USB 90, 94 light power 7 lights caps lock 7 Digital Media Slot 12 webcam 10 wireless 7 M Main menu 88 mass storage devices, spare part numbers 27 memory module product description 2 removal 51 spare part numbers 20, 51 memory module compartment, identifying 13 memory test - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 139
model 4 serviceability 4 wireless 3 product name 1 R recovering a program or driver 103 part number 41 S secondary hard drive self test 89 security cable slot, identifying 11 Security menu 88, service considerations 35 serviceability, product description 4 setup utility Diagnostics menu 93 File - HP G72-c55DX | HP G72 Notebook PC - Maintenance and Service Guide - Page 140
LightScribe 100 hard drive 99 optical drive 100, 101 system resources 102 starting Setup Utility 85 static-shielding materials 39 stringent security 93 supported discs 104 system board removal 75 spare part numbers 22, 75 System Configuration menu 89, 94 system failure or instability 103 system fan
HP G72 Notebook PC
Maintenance and Service Guide
SUMMARY
This guide is a troubleshooting reference used for maintaining and servicing the computer. It provides
comprehensive information on identifying computer features, components, and spare parts;
troubleshooting computer problems; and performing computer disassembly procedures.