Supervisor password ........24 Power management .......... 25 Screen blank state ........25 Putting the computer to sleep or shutting it down .......... 25 Lenovo G70-35 ..........27 Specifications ............. 27 Status indicators ..........29 Hotkeys ............... 31 FRU replacement notices........32...
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 G70-35 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.
Safety information 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 G70-35 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 G70-35 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 information 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 G70-35 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 G70-35 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 G70-35 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 G70-35 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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Safety information 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://support.lenovo.com. 2. Enter the serial number or select a product or use Lenovo smart downloading. 3. Select the BIOS/Driver/Applications and download.
Important service information 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. •...
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 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: •...
Lenovo G70-35 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 G70-35” on page 27. Note: Noise from the AC adapter does not always indicate a defect. Checking operational charging...
Lenovo G70-35 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).
Related service information 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 state If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off.
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Lenovo G70-35 Hardware Maintenance Manual Shutting down the computer If you are not going to use your computer for a long time, shut it down.To shut down the computer, do one of the following: • Press and hold or right-click the Start button in the lower-left corner and select Shut down or sign out ...
• “FRU replacement notices” on page 32 • “Removing and replacing an FRU” on page 33 • “Locations” on page 73 • “Parts list” on page 76 Specifications The following table lists the specifications of the Lenovo G70-35: Table 1. Specifications Feature Description Processor See the system properties of your computer.
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Lenovo G70-35 Hardware Maintenance Manual WLAN Intel 802.11ac (1x1) + BT combo card non-Intel 802.11ac (1x1)+BT combo card non-Intel 802.11bgn (1x1) + BT combo card WWAN Bluetooth combined in combo card Keyboard 6 rows Lenovo Keyboard Touch pad Multi-touch type Integrated HD (720p) or 0.3 M...
Lenovo G70-35 Status indicators The system status indicators below show the computer status:...
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Lenovo G70-35 Hardware Maintenance Manual Table 2. Status indicators Indicator Indicator Charge Meaning status Status — The computer is powered on. Power (solid white) status Blinking — The computer is in sleep mode. indicator — The computer is powered off.
Lenovo G70-35 Hotkeys You can access certain system settings quickly by pressing the appropriate hotkeys. Table 3. Hotkeys Enables/disables airplane Mutes/unmutes the sound. mode. Switches the active Decreases the volume level. program. Turns on/off the backlight Increases the volume level.
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: •...
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. Note: The illustrations used in this section are of the Lenovo Z70-80, unless otherwise stated.
Lenovo G70-35 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 manual battery latch .
Lenovo G70-35 1020 Dummy card For access, remove this FRU: • “1010 Battery pack” on page 34 Figure 2. Removal steps of dummy card Remove the dummy card in the direction shown by arrows...
Lenovo G70-35 1040 Hard disk drive 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 Attention: • Do not drop the hard disk drive or apply any physical shock to it.
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Lenovo G70-35 Hardware Maintenance Manual Figure 4. Removal steps of hard disk drive (continued) Push the hard disk drive in the direction shown by arrow Take out the hard disk drive secured in a metal frame...
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Lenovo G70-35 Figure 4. Removal steps of hard disk drive (continued) Remove four screws and detach the metal frame from the hard disk drive. Step Screw (quantity) Color Torque M3 × 3 mm, flat-head, nylok-coated(4) White 3.0 kgfcm When installing: Make sure that the HDD connector is attached firmly.
Important: The preinstalled WLAN module may only be replaced with a Lenovo approved module in order to comply with FCC and IC regulations. Refer to “Table 4. Parts list—Overall” on page 78 for Lenovo part numbers for the approved modules.
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Lenovo G70-35 Hardware Maintenance Manual Figure 6. 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.
Lenovo G70-35 1070 Optical drive 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 Figure 7. Removal steps of optical drive...
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Lenovo G70-35 Hardware Maintenance Manual Figure 7. Removal steps of optical drive (continued) Insert a screwdriver into the screw hole and push the optical drive in the direction shown by arrow . Pull the optical drive out in the direction shown...
Lenovo G70-35 1080 Fan 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 Figure 8. Removal steps of fan assembly...
Lenovo G70-35 Hardware Maintenance Manual 1090 Keyboard 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 • “1080 Fan assembly” on page 45 Figure 9.
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Lenovo G70-35 Figure 9. Removal steps of keyboard (continued) Push the back of the keyboard in the direction shown by the arrow.
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Lenovo G70-35 Hardware Maintenance Manual Figure 9. Removal steps of keyboard (continued) Loosen the keyboard with fingers in the direction shown by arrow...
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Lenovo G70-35 Figure 9. Removal steps of keyboard (continued) Lift the keyboard a little . Pull the keyboard connector slot cover upward as shown by arrow , and detach the keyboard cable from the keyboard connector in the direction shown by arrow...
Lenovo G70-35 Hardware Maintenance Manual 1100 Keyboard 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 •...
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Lenovo G70-35 Figure 10. Removal steps of keyboard bezel (continued) Remove the screws Step Screw (quantity) Color Torque M2.5 × 4 mm, flat-head, nylok-coated (3) Black 3.0 kgfcm...
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Lenovo G70-35 Hardware Maintenance Manual Figure 10. Removal steps of keyboard bezel (continued) Pull the touch pad, LED indicator board and power board connector slot cover upward as shown by arrow , and detach the touch pad, LED indicator and...
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Lenovo G70-35 Figure 10. Removal steps of keyboard bezel (continued) Remove the keyboard bezel in the direction shown by arrow...
Lenovo G70-35 Hardware Maintenance Manual 1110 System board Important notices for handling the system board: When handling the system board, bear the following in mind. • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
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Lenovo G70-35 Figure 11. Removal steps of system board Loosen the screws . Detach optical disk drive switch board connector in the direction shown by arrow , USB board connector in the direction shown by arrow Step Screw (quantity) Color Torque M2.5 ×...
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Lenovo G70-35 Hardware Maintenance Manual Figure 11. Removal steps of system board (continued) Unplug power assembly connector in the direction shown by arrow disconnect LCD connector in the direction shown by arrow , unplug speakers connector in the direction shown by arrow...
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Lenovo G70-35 Figure 11. 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 USB as shown in...
Lenovo G70-35 Hardware Maintenance Manual 1120 LCD unit For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1020 Dummy card” on page 35 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 •...
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Lenovo G70-35 Figure 12. Removal steps of LCD unit Release the antenna cables from the cable guides in the direction shown by arrows . Remove the screws Step Screw (quantity) Color Torque M2.5 × 5 mm, flat-head, nylok-coated (4) White 3.0 kgfcm When installing: •...
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Lenovo G70-35 Hardware Maintenance Manual Figure 12. Removal steps of LCD unit (continued) Remove the LCD unit in the direction shown by arrows...
Lenovo G70-35 Hardware Maintenance Manual 1140 Base cover and LED board For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1020 Dummy card” on page 35 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover”...
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Lenovo G70-35 Figure 14. Removal steps of base cover and LED board Loosen the screw , then remove the USB and audio board. When installing: Make sure that the power connector is attached firmly. Step Screw (quantity) Color Torque M2.5 × 4 mm, flat-head, nylok-coated (1) Black 3.0 kgfcm...
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Lenovo G70-35 Hardware Maintenance Manual Figure 14. Removal steps of base cover and LED board (continued) Remove the power assembly in the direction shown by arrow Loosen screw , then remove the power board. Step Screw (quantity) Color Torque M2.5 × 4 mm, flat-head, nylok-coated (1) Black 3.0 kgfcm...
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Lenovo G70-35 Figure 14. Removal steps of base cover and LED board (continued) Loosen the two screws , then remove the LED board. Step Screw (quantity) Color Torque M2.0 × 3 mm, flat-head, nylok-coated (2) Black 2.0 kgfcm Loosen screw , then remove the optical disk drive switch board.
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Lenovo G70-35 Hardware Maintenance Manual Note: Applying labels to the base cover The new base cover FRU is shipped with a kit containing labels of several kinds. When you replace the base cover, you need to apply the following label: The following labels need to be peeled off from the old base cover, and need to be put on the new base cover.
Lenovo G70-35 1150 LCD front bezel For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1020 Dummy card” on page 35 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 •...
Lenovo G70-35 Hardware Maintenance Manual 1160 LCD panel, LCD cable and hinges For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1020 Dummy card” on page 35 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover”...
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Lenovo G70-35 Figure 16. Removal steps of LCD panel, LCD cable and hinges Remove the eight screws . Detach the integrated camera connector in the direction shown by arrow . Lift the LCD panel in the direction shown by arrows When installing: Make sure that the connector is attached firmly.
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Lenovo G70-35 Hardware Maintenance Manual Figure 16. Removal steps of LCD panel, LCD cable and hinges (continued) Remove four screws . Lift the LCD panel with hinges in the direction shown by arrows Step Screw (quantity) Color Torque M2.0 × 3 mm, flat-head, nylokcoated (4) Black 2.0 kgfcm...
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Lenovo G70-35 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 G70-35 Hardware Maintenance Manual 1170 Integrated camera For access, remove these FRUs in order: • “1010 Battery pack” on page 34 • “1020 Dummy card” on page 35 • “1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot compartment cover” on page 36 •...
Lenovo G70-35 Bottom and Left-side view AC power adapter jack Novo button Ventilation slots VGA port RJ-45 port HDMI port USB ports Battery latch - manual Battery pack Battery latch - spring loaded Ventilation slots Speakers...
Attention: Do not attempt to replace an FRU on your own. If an FRU is damaged, contact a Lenovo authorized servicer or a marketing representative for replacement or repair. Only qualified technicians can inspect or repair this product.
Lenovo G70-35 Hardware Maintenance Manual LCD FRUs In Lenovo G70-35, there are following types of LCDs. • “17.3-in. HD TFT”...
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Lenovo G70-35 17.3-in. HD TFT Table 5. Parts list—17.3-in. HD TFT FRU no. CRU ID LCD Bezel Black L G70-70 5B30G89492 Panel, AUO B173RTN01.1 0A HD+ G W LED1 NB 5D10F76131 Panel, CMI N173FGE-E23 HD+ G W NB 5D10F76128 Panel, IN N173FGE-E23 C2 HD+T G W NB...
Lenovo G70-35 Hardware Maintenance Manual Keyboard Table 6. Parts list—Keyboard Language CRU ID English 25214725 U.K. English 25214726 Italian 25214727 Spanish 25214728 Turkish 25214729 Thai 25214730 Portuguese 25214731 Latin 25214732 Canadian English&French 25214733 Korean 25214734 Traditional Chinese 25214735 Russian 25214736...
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Lenovo G70-35 Table 6. Parts list—Keyboard (continued) Language CRU ID Greek 25214773 Hebrew 25214774 Hungarian 25214775 Four Nordic countries 25214776 Belgian 25214777 Sunrex Icelandic 25214778 (continued) Slovenian 25214779 Swiss 25214780 International English 25214781 Czechoslovakian 25214782 Bulgarian 25214783 Indian 25214784 English 25214785 U.K.
Lenovo G70-35 Hardware Maintenance Manual Power cords A Lenovo power cord for a specific country or region is usually available only in that country or region: Table 10. Parts list—3-pin power cords Region CRU ID 145000600 • LINETEK PC323+RVV300/300+LS15 1m...
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Lenovo G70-35 Table 10. Parts list—3-pin power cords (continued) Region CRU ID Israel 145000563 • Longwell LP-41+H03VV-F+LS-18 1m 145000562 • Longwell LP-30B+SPT-2 18AWG+LS-18 1m 145000561 • Longwell LP-61L+H03VV-F+LS-18 1m Indian 145000560 • Longwell LP-67+BIS+LS-18 1m Italy 145000559 • Longwell LP-22+H03VV-F+LS-18 1m...
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Lenovo G70-35 Hardware Maintenance Manual Table 10. Parts list—3-pin power cords (continued) Region CRU ID Brazil 145000527 • VOLEX CH10S3+H03VV-F+VAC5S 1m Israel 145000526 • VOLEX SI16S3+H03VV-F+VAC5S 1m 145000525 • VOLEX M2511+HO3VV-F+VAC5S 1m 145500000 • lux 0031+H03VV-F 0.75/3C+0011 1m Europe 145500001 •...
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Lenovo G70-35 Hardware Maintenance Manual Trademarks The following terms are trademarks or registered trademarks of Lenovo in the United States, other countries, or both. Lenovo OneKey Microsoft and Windows are trademarks of Microsoft Corporation in the United States, other countries, or both.