This manual is intended only for trained servicers who are familiar with Lenovo products. Use this manual to troubleshoot problems effectively. Before servicing a Lenovo product, make sure to read all the information under “Safety information” on page 1 and “Important service information”...
Safety information Safety information This chapter presents the following safety information that you need to get familiar with before you service a Lenovo computer: • “General safety” on page 2 • “Electrical safety” on page 3 • “Safety inspection guide” on page 5 •...
Lenovo G770 Hardware Maintenance Manual General safety Follow these rules below to ensure general safety: • Observe a good housekeeping in the area where the machines are put during and after the maintenance. • When lifting any heavy object: 1. Make sure that you can stand safely without slipping.
Electrical safety Observe the following rules when working on electrical equipments. Important: Use only approved tools and test equipments. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have rubber floor mats near their machines that contain small conductive fibers to decrease electrostatic discharges.
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Lenovo G770 Hardware Maintenance Manual • Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. • Do not touch live electrical circuits with the reflective surface of a plastic dental mirror.
4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.
Lenovo G770 Hardware Maintenance Manual Handling devices that are sensitive to electrostatic discharge Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
Safety notices: multilingual translations The safety notices in this section are provided in English, French, German, Hebrew, Italian, Japanese, and Spanish. Safety notice 1 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer.
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Lenovo G770 Hardware Maintenance Manual Safety notice 2 DANGER Some standby batteries contain a small amount of nickel and cadmium. Do not disassemble a standby battery, recharge it, throw it into fire or water, or short-circuit it. Dispose of the battery as required by local ordinances or regulations.
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Safety information Safety notice 3 DANGER The battery pack contains small amounts of nickel. Do not disassemble it, throw it into fire or water, or short-circuit it. Dispose of the battery pack as required by local ordinances or regulations. Use only the battery in the appropriate parts listing when replacing the battery pack.
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Lenovo G770 Hardware Maintenance Manual Safety notice 4 DANGER The lithium battery can cause a fire, an explosion, or a severe burn. Do not recharge it, remove its polarized connector, disassemble it, heat it above 100°C (212°F), incinerate it, or expose its cell contents to water. Dispose of the battery as required by local ordinances or regulations.
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Safety information Safety notice 5 If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water at least for 15 minutes. Seek medical care if any symptoms caused by the fluid are present after washing.
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Lenovo G770 Hardware Maintenance Manual Safety notice 6 DANGER To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card. Afin d’éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d’alimentation.
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Safety information Safety notice 8 DANGER Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any interconnecting cables. Avant de retirer une unité remplaçable en clientèle, mettez le système hors tension, débranchez tous les cordons d’alimentation des socles de prise de courant, retirez la batterie et déconnectez tous les cordons d’interface.
Lenovo G770 Hardware Maintenance Manual Laser compliance statement Some models of Lenovo computer are equipped from the factory with an optical storage device such as a CD-ROM drive or a DVD-ROM drive. Such devices are also sold separately as options. If one of these drives is installed, it is certified in the U.S.
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A CD-ROM drive, a DVD-ROM drive, or any other storage device installed may contain an embedded Class 3A or Class 3B laser diode. Note the following: DANGER Emits visible and invisible laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.
To download software fixes, drivers, and BIOS, follow the steps below: 1. Go to http://consumersupport.lenovo.com/. 2. Enter the serial number or select a product or use Lenovo smart downloading. 3. Select the BIOS/Driver/Applications and download.
Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs: • If you are instructed to replace an FRU, but the replacement does not solve the problem, reinstall the original FRU before you continue. • Some computers have both a processor board and a system board. If you are instructed to replace either of them, and replacing one of them does not solve the problem, reinstall that board, and then replace the other one.
Electronic Equipment Directive (2002/95/EC) is a European Union legal requirement affecting the global electronics industry. RoHS requirements must be implemented on Lenovo products placed on the market after June 2006. Products on the market before June 2006 are not required to have RoHS compliant parts.
General checkout This chapter presents the following information: • “What to do first” on page 20 • “Power system checkout” on page 21 Before you go to the checkout, make sure to read the following important notes: Important notes: • Only certified trained personnel can service the computer. •...
Lenovo G770 Hardware Maintenance Manual What to do first When you do return an FRU, you must include the following information in the parts exchange form or parts return form that you attach to it: 1. Name and phone number of servicer 2.
4. If the voltage is acceptable, do the following: • Replace the system board. • If the problem persists, go to “Lenovo G770” on page 27. Note: Noise from the AC adapter does not always indicate a defect. Checking operational charging...
Lenovo G770 Hardware Maintenance Manual Perform operational charging. If the battery status indicator or icon does not light on, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack.
1. Insert the bootable Start Recovery Disc into the optical drive. 2. Start the computer. When the Lenovo logo comes up, immediately press F12; on the boot sequence menu, select the optical drive as the first boot-up device.
Windows screen is displayed. Follow the instructions on the screen to complete the Windows setup. Passwords As many as three passwords may be needed for any Lenovo computer: the power-on password (POP), the hard disk password (HDP), and the supervisor password (SVP).
Power management Note: Power management modes are not supported for APM operating system. To reduce power consumption, the computer has three power management modes: screen blank, sleep (standby), and hibernation. Screen blank mode If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off.
Lenovo G770 Hardware Maintenance Manual Hibernation mode In hibernation mode, the following occurs: • The system status, RAM, VRAM, and setup data are stored on the hard disk. • The system is powered off. To cause the computer to enter hibernation mode, follow the steps below: •...
• “FRU replacement notices” on page 32 • “Removing and replacing an FRU” on page 33 • “Locations” on page 66 • “Parts list” on page 69 Specifications The following table lists the specifications of the Lenovo G770: Table 1. Specifications Feature Processor Core Chipset...
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Lenovo G770 Hardware Maintenance Manual Table 1. Specifications (continued) Feature I/O port Audio Video Ethernet (on the system board) PCI Express Mini Card slot WLAN WWAN Bluetooth Keyboard Touch pad Integrated camera Battery AC adapter Pre-installed operating system Description • External monitor connector •...
Lenovo G770 Status indicators The system status indicators below show the computer status:...
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Lenovo G770 Hardware Maintenance Manual Table 2. Status indicators Indicator Caps lock Num lock Power on Battery status Wireless status Drive in use White: Data is being read from or written to the hard disk Meaning White: Caps Lock mode is enabled. You can enter all alphabetic characters (A-Z) in uppercase without pressing the Shift key.
Stop playback of Windows Media Player. Skip to the previous track. Skip to the next track. Activate the system request. Enable/Disable the scroll lock. Activate the pause function. Activate the break function. Increase/Decrease display brightness. Increase/Decrease sound volume. Lenovo G770...
This section presents notices related to removing and replacing parts. Read this section carefully before replacing any FRU. Screw notices Loose screws can cause a reliability problem. In the Lenovo computer, this problem is addressed with special nylon-coated screws that have the following characteristics: •...
Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove potential shock reasons. Lenovo G770...
Lenovo G770 Hardware Maintenance Manual 1010 Battery pack DANGER Only use the battery specified in the parts list for your computer. Any other battery could ignite or explode. Figure 1. Removal steps of battery pack Unlock the battery release lever unlocked position When installing: Install the battery pack along the slide rails of the slot.
Lenovo G770 1020 Dummy card For access, remove this FRU: • “1010 Battery pack” on page 34 Figure 2. Removal steps of dummy cards Remove the dummy card in the direction shown by arrows...
Figure 4. Removal steps of hard disk drive Remove the frame fixing screws Step Screw (quantity) M2.5 × 4 mm, flat-head, nylok-coated (2) Black Pull the HDD bracket in the direction shown by arrow Color Lenovo G770 Torque 2.0 kgfcm...
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Lenovo G770 Hardware Maintenance Manual Take out the hard disk drive secured in a metal frame Remove four screws Step When installing: Make sure that the HDD connector is attached firmly. and detach the metal frame from the hard disk drive Screw (quantity) M3 ×...
, insert a screwdriver into the screw hole and push the optical drive in the direction shown by arrow direction shown by arrow Step Screw (quantity) M2.5 × 8 mm, flat-head, nylok-coated . Pull the optical drive out in the Color Black Lenovo G770 Torque 2.0 kgfcm...
Notes: wireless LAN card has 2 cables in step wireless LAN card in some models may have 3 cables in step Step Screw (quantity) M2 × 3 mm, flat-head, nylok-coated (1) Black Lenovo G770 , and then remove the Color Torque 1.6 kgfcm...
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Lenovo G770 Hardware Maintenance Manual Figure 7. Removal steps of PCI Express Mini Card for wireless LAN/WAN (continued) Remove the card in the direction shown by arrow When installing: • In models with a wireless LAN card that has two antenna connectors, plug the black cable (1st) (MAIN) into the jack labeled 1, and the white cable (2nd) (AUX) into jack labeled 2 on the card.
• “1010 Battery pack” on page 34 Figure 8. Removal steps of keyboard Remove the screw Loosen the keyboard with fingers in the direction shown by arrow Step Screw (quantity) M2.5 × 8 mm, flat-head, nylok-coated (1) Black Color Lenovo G770 Torque 2.0 kgfcm...
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Lenovo G770 Hardware Maintenance Manual Figure 8. Removal steps of keyboard (continued) Lift the keyboard a little , and then detach the connector in the direction shown by arrows When installing: Make sure that the FPC connector is attached firmly.
Screw (quantity) M2.5 × 8 mm, flat-head, nylok-coated (16) M2 × 2 mm, flat-head, nylok-coated (4) M2 × 3 mm, flat-head, nylok-coated (2) , four screws and two screws Lenovo G770 on the bottom. Color Torque Black 2.0 kgfcm Black 1.6 kgfcm...
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Lenovo G770 Hardware Maintenance Manual Figure 9. Removal steps of keyboard bezel (continued) Remove four screws Step Screw (quantity) M2.5 × 5 mm, flat-head, nylok-coated (4) White Color Torque 2.0 kgfcm...
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Lenovo G770 Figure 9. Removal steps of keyboard bezel (continued) Detach three FPC connectors in the direction shown by arrows When installing: Make sure that all the FPC connectors, microphone connectors and LCD connector are attached firmly.
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Lenovo G770 Hardware Maintenance Manual Figure 9. Removal steps of keyboard bezel (continued) Remove the keyboard bezel in the direction shown by arrow Remove two screws Step Remove the screw Step , and then remove the power board Screw (quantity) M2 ×...
• “1050 Optical drive” on page 39 • “1060 DIMM” on page 40 • “1070 PCI Express Mini Card for wireless LAN/WAN” on page 41 • “1080 Keyboard” on page 43 • “1090 Keyboard bezel” on page 45 Lenovo G770...
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Lenovo G770 Hardware Maintenance Manual Figure 10. Removal steps of system board Remove five screws shown by arrows When installing: Make sure that all the connectors are attached firmly. Step Screw (quantity) M2.5 × 4 mm, flat-head, nylok-coated (5) . Unplug three microphone connectors in the direction...
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Lenovo G770 Figure 10. Removal steps of system board (continued) Remove the system board in the direction shown by arrow When installing: When attaching the system board to the base cover, adjust the placement of the wireless radio switch as shown in...
Lenovo G770 Hardware Maintenance Manual 1110 LCD unit For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
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Lenovo G770 Figure 11. Removal steps of LCD unit (continued) Remove the LCD unit in the direction shown by arrows...
Lenovo G770 Hardware Maintenance Manual 1120 Fan assembly and Heat Sink assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 •...
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Lift the fan assembly and heat sink assembly in the direction shown by arrow . Be careful not to damage the connector. Step Screw (quantity) M2 × 2 mm, flat-head, nylok-coated (4) M2.5 × 4 mm, flat-head, nylok-coated (3) Black Lenovo G770 Color Torque Black 1.6 kgfcm 2.0 kgfcm...
Lenovo G770 Hardware Maintenance Manual 1130 CPU For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Lenovo G770 1140 Base cover, speakers, bluetooth card and power assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
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Lenovo G770 Hardware Maintenance Manual Remove four screws arrows Step Screw (quantity) M2.5 × 2 mm, flat-head, nylok-coated (4) , and then remove the speakers in the direction shown by Color Torque Black 2.0 kgfcm...
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FCC labels, find duplicates of them in the label kit and apply them to the new base cover. For the location of each label, refer to the following figure: Lenovo G770...
Lenovo G770 Hardware Maintenance Manual 1150 LCD front bezel For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
When installing: Make sure that the connector is attached firmly. Step Screw (quantity) M2.5 × 4 mm, flat-head, nylok-coated (4) Black . Unplug the integrated camera connector in the . Lift the LCD panel in the direction shown by Color Lenovo G770 Torque 2.0 kgfcm...
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Lenovo G770 Hardware Maintenance Manual Figure 16. Removal steps of LCD panel, LCD cable and hinges (continued) Remove eight screws Step and the hinges in the direction shown by arrows Screw (quantity) M2 × 3 mm, flat-head, nylokcoated (8) Color...
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Lenovo G770 Figure 16. Removal steps of LCD panel, LCD cable and hinges (continued) Note: The LCD cables are attached to the LCD panel by a metal connector. Peel off the adhesive tape and detach the connector in the direction shown by arrow When installing: Make sure that the metal connector is attached firmly.
Lenovo G770 Hardware Maintenance Manual 1170 Integrated camera For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Lenovo G770 1180 Antenna assembly and LCD cover For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 • “1040 Hard disk drive” on page 37 •...
Lenovo G770 Hardware Maintenance Manual Locations Front view Integrated camera (Select models only) Wireless module antennas (Select models only) Computer display Power button OneKey Rescue System button System status indicators Note: For the description of each indicator, see “Status indicators” on page 29.
Lenovo G770 Hardware Maintenance Manual Bottom and Left-side view Kensington slot Fan louvers VGA port RJ-45 port HDMI port (Select models only) USB port Battery latch - manual Battery pack Battery latch - spring loaded Hard disk drive (HDD)/Memory/Mini PCI Express Card slot compartment...
• “Keyboard” on page 77 • “Miscellaneous parts” on page 79 • “AC adapters” on page 80 • “Power cords” on page 81 Notes: • Each FRU is available for all types or models, unless specific types or models are specified. Lenovo G770...
LCD FRUs In Lenovo G770, there are following types of LCDs. • “17.3 -in. HD TFT” Lenovo G770...
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Lenovo G770 Hardware Maintenance Manual 17.3-in. HD TFT Table 5. Parts list—17.3-in. HD TFT PIWG4 LCD BEZEL W/CAMERA HOLE PIWG1 LCD SCREW RUBBER UP FH0GL000900 17.3 HD LED Panel, LTN173KT01-L01 17.3 HD LED Panel, N173FGE-L21 17.3 HD LED Panel, B173RW01 V3 17.3 FHD LED Panel, N173HGE-L21...
Italian U.K. English English Bulgarian Czechoslovakian International English Swiss Slovenian Icelandic Chicony Belgian Four Nordic countries Hungarian Hebrew Greek Dutch Japanese Lenovo G770 25012419 25012420 25012421 25012422 25012423 25012424 25012425 25012426 25012427 25012428 25012429 25012430 25012431 25012432 25012433 25012434 25012435...
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Lenovo G770 Hardware Maintenance Manual Table 6. Parts list—Keyboard (continued) Language G770 (continued) Brazilian Arabic German French Russian Traditional Chinese Korean Canadian English&French Chicony (continued) Latin Portuguese Thai Turkish Spanish Italian U.K. English English 25012345 25012346 25012347 25012348 25012349 25012350...
Power cords A Lenovo power cord for a specific country or region is usually available only in that country or region: Table 9. Parts list—3-pin power cords Region • SSD YD-118-1+IEC53RVV+SSD-3-2B-1 1m • LINETEK PC323+RVV300/300+LS15 1m Argentina • LINETEK LS15+H03VV-F+LP39 1m Danmark •...
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Lenovo G770 Hardware Maintenance Manual Table 9. Parts list—3-pin power cords (continued) Region Brazil • Longwell LP-46+H03VV-F+LS-18 1m Israel • Longwell LP-41+H03VV-F+LS-18 1m • Longwell LP-30B+SPT-2 18AWG+LS-18 1m • Longwell LP-61L+H03VV-F+LS-18 1m Indian • Longwell LP-67+BIS+LS-18 1m Italy • Longwell LP-22+H03VV-F+LS-18 1m Korea •...
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Table 9. Parts list—3-pin power cords (continued) Region Korea • Volex LP-486+KTLH03VV-F+LS-5 1m Australia • Volex LP-23A+LFC-3R+LS-18 1m Taiwan • Volex LP-71+VCTF+LS-33 1m Japan • Volex LP-54+VCTF+LS-18 1m • Volex LP-34A+H03VV-F+LS-18 1m Lenovo G770 145000533 145000532 145000531 145000530 145000525...
The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
Actual results may vary. Users of this document should verify the applicable data for their specific environment. Trademarks The following terms are either registered trademarks or trademarks of Lenovo in the United States and/or other countries: ® Lenovo Lenovo logo ®...