LENOVO V17 G4 IRU (01) PDF MANUAL

Follow these rules to ensure general safety:

• Observe good housekeeping in the area of the machines during and after maintenance.

• When lifting any heavy object:

1. Make sure that you can stand safely without slipping.

2. Distribute the weight of the object equally between your feet.

3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

• Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

• Before you start the machine, make sure that other people are not in a hazardous position.

• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

• Keep your tool case away from walk areas so that other people will not trip over it.

• Do not wear loose clothing that can be trapped in the moving parts of a machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

• Insert the ends of your necktie or scarf inside clothing or fasten it with a non-conductive clip, about 8 centimeters (3 inches) from the end.

• Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Metal objects are good electrical conductors.

• Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes.

• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

• Reinstall all covers correctly before returning the machine to the customer.

• Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers.

Observe the following rules when working on electrical equipment.

Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical shock.

• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or unplug the power cord quickly.

• Do not work alone under hazardous conditions or near equipment that has hazardous voltages.

• Disconnect all power before:

– Performing a mechanical inspection

– Working near power supplies

– Removing or installing main units

• Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position.

• If you need to work on a machine that has exposed electrical circuits, observe the following precautions:

– Ensure that another person, familiar with the power-off controls, is near you.

– Attention: Another person must be there to switch off the power, if necessary.

– Use only one hand when working with powered-on electrical equipment; keep the other hand in your pocket or behind your back.

– Attention: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body.

– When using testers, set the controls correctly and use the approved probe leads and accessories for that tester.

– Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as metal floor strips and machine frames.

• Observe the special safety precautions when you work with very high voltages; Instructions for these precautions are in the safety sections of maintenance information. Use extreme care when measuring high voltages.

• Regularly inspect and maintain your electrical hand tools for safe operational condition.

• Do not use worn or broken tools and testers.

• Never assume that power has been disconnected from a circuit. First, check that it has been powered off.

• Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, non-grounded power extension cables, power surges, and missing safety grounds.

• Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.

• Do not service the following parts with the power on when they are removed from their normal operating places in a machine:

– Power supply units

– Pumps

– Blowers and fans

– Motor generators

– Similar units as listed above

This practice ensures correct grounding of the units.

• If an electrical accident occurs:

– Use caution; do not become a victim yourself.

– Switch off power.

– Send another person to get medical aid.

To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of every service task. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1. Check exterior covers for damage (loose, broken, or sharp edges).

2. Power off the computer. Disconnect the power cord.

3. Check the power cord for:

a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 ohm or less between the external ground pin and the frame ground.

b. The power cord should be the authorized type specified for your computer.

c. Insulation must not be frayed or worn.

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.

8. Check for worn, frayed, or pinched cables.

9. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

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.

Notes:

1. Use product-specific ESD procedures when they exceed the requirements noted here.

2. Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

• Keep the parts in protective packages until they are inserted into the product.

• Avoid contact with other people.

• Wear a grounded wrist strap against your skin to eliminate static on your body.

• Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

• Use a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.

• Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement.

Note: The use of a grounding system to guard against ESD damage is desirable but not necessary.

– Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.

– When working on a double-insulated or battery-operated system, use an ESD common ground or reference point. You can use coax or connector-outside shells on these systems.

– Use the round ground prong of the ac plug on ac-operated computers.

DANGER

Before the computer is powered on after FRU replacement, make sure that all screws, springs, and other small parts are in place and are not left loose inside the computer. Verify this by shaking the computer and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

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. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.

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. Use of an incorrect battery can result in ignition or explosion of the battery.

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. Use only the battery in the appropriate parts listing. Use of an incorrect battery can result in ignition or explosion of the battery.

DANGER

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 for at least 15 minutes. Seek medical care if any symptoms from the fluid are present after washing.

DANGER

To avoid shock, do not remove the plastic cover that protects the lower part of the inverter card.

DANGER

Though the main batteries have low voltage, a short-circuited or grounded battery can produce enough current to burn personnel or combustible materials.

DANGER

Unless hot swap is allowed for the FRU being replaced, do as follows before removing it: power off the computer, unplug all power cords from electrical outlets, remove the battery pack, and disconnect any interconnecting cables.

Before you go to the checkout instructions, ensure that you read the following important notes.

Important notes:

• It is recommended that only certified trained personnel perform service on the computer. For customers electing to repair their own machines, please follow all instructions carefully.

• Before replacing any FRU, read the entire page on removing and replacing FRUs.

• Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten.

• Replace an FRU only with another FRU of the correct model. When you replace an FRU, make sure that the model of the machine and the FRU part number are correct by referring to the FRU parts list.

• An FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing an FRU only when a problem recurs. If you suspect that an FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU.

• Be careful not to replace a nondefective FRU.

When you return a 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 service technician

2. Date of service

3. Date on which the machine failed

4. Date of purchase

5. Failure symptoms, error codes appearing on the display, and beep symptoms

6. Procedure index and page number in which the failing FRU was detected

7. Failing FRU name and part number

8. Machine type, model number, and serial number

9. Customer’s name and address

The following are some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use.

The following are not covered under warranty:

• LCD panel cracked from the application of excessive force or from being dropped

• Scratched (cosmetic) parts

• Distortion, deformation, or discoloration of the cosmetic parts

• Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force

• Damage caused by liquid spilled into the system

• Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an incompatible card

• Improper disc insertion or use of an external optical drive

• Fuses blown by attachment of a non-supported device

• Forgotten computer password (making the computer unusable)

• Sticky keys caused by spilling a liquid onto the keyboard

• Use of an incorrect ac power adapter on laptop products

The following symptoms might indicate damage caused by non-warranted activities:

• Missing parts might be a symptom of improper service or modification.

• Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard disk drive might have been dropped or subject to excessive force.

* for selected models

Notes:

• T30 screw drivers are used to service the new Intel Xeon CPUs.

• Hexagonal sockets are used to remove antenna connectors.

• Silicone grease is applied to the CPU and heatsink surfaces to eliminate air gaps.

When removing or replacing a FRU, ensure that you observe the following general guidelines:

1. It is recommended that only certified trained personnel perform service on the computer. For customers electing to repair their own machines, please follow all instructions carefully.

2. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs are listed at the beginning of each FRU replacement procedure. Remove them in the order in which they are listed.

3. Follow the correct sequence in the steps for removing a FRU, as shown in the illustrations by the numbers in square callouts.

4. When removing a FRU, move it in the direction as shown by the arrow in the illustration.

5. To install a new FRU in place, perform the removal procedure in reverse and follow any notes that pertain to replacement.

6. When replacing a FRU, carefully retain and reuse all screws.

7. When replacing the base cover, reapply all labels that come with the replacement base cover. If some original labels are not included with the replacement base cover, peal them off from the original base cover and paste them on the replacement base cover.

DANGER: Before removing any FRU or CRU, shut down the computer and unplug all power cords from electrical outlets.

Attention: After replacing a FRU, do not turn on the computer until you have ensured that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

Attention: The system board is sensitive to and can be damaged by ESD. Before touching it, establish personal grounding by touching a ground point with one hand or by using an ESD strap (P/N 6405959).

Make sure the computer has been shut down before servicing the computer.

Step 1. Place the computer upside down on a flat surface.

Step 2. Remove 10 screws.

Step 3. Remove the lower case.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove the memory module shielding.

Step 3. Peel off the memory absorber from the memory module.

Step 4. Open the latches and remove the memory module from the system board.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove four screws and then remove the battery pack.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove six screws and then remove the battery pack.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove one screw. Remove the 2242 solid-state drive with the bracket. Then, remove the thermal pad.

Step 3. Remove the 2242 solid-state drive.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Remove one screw and then remove the 2280 solid-state drive by pulling it away from the slot.

Step 3. Remove the 2280 solid-state drive thermal pad.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Step 2. Loosen four screws and then remove the heat sink.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Disconnect the antennas from the Wi-Fi card. Disconnect the system fan cable from the system board. Then, remove all the cables from the fan hooks.

Step 3. Remove three screws and then remove the system fan.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Disconnect the antenna cable connectors from the Wi-Fi card. Remove one screw and then remove the Wi-Fi card.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Disconnect and remove the USB board cable. Remove three screws and then remove the USB board.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.

Step 2. Disconnect the CMOS battery cable from the system board. Press the CMOS battery outwards and then remove it from the system board.

Make sure the following FRUs (CRUs) have been removed:

“Remove the lower case”

“Remove the USB board and cable”

Step 1. Disconnect and remove the fingerprint reader cable.

Step 2. Remove the fingerprint reader.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

“Remove the memory module and shielding”

“Remove the solid-state drive and thermal pad”

“Remove the Wi-Fi card”

“Remove the CMOS battery”

Step 1. Disconnect all cables connected to the system board and remove two screws that secure the right hinge.

Step 2. Open the right hinge.

Step 3. Remove six screws. Then, turn the system board over carefully.

Step 4. Disconnect the touchpad cable and remove the system board.

Some key product information and settings are stored in the ROMs of the PC’s system board. After replacing a system board, you need to use a Lenovo-provided software tool to write key information including machine type model (MTM), serial number (SN), and product name as well as settings such as keyboard language to the replacement system board.

For users, follow the following steps:

Attention: Take extra caution when entering the MTM and SN and when selecting the product name and keyboard language. Carefully verify these details before committing the writing action. Once recorded on the system board, they cannot be altered. Consult Lenovo service if you are uncertain about the MTM, SN, and product name for your PC.

Step 1. Connect the ac power adapter and turn on the computer.

Step 2. Download the tool package and double-click the WinMBDWizard.exe file to run the tool.

Step 3. Follow the on-screen instructions to input the MTM and SN, select the product name and keyboard language of the computer.

Step 4. Click Start Update to update the product information.

Step 5. Click Yes in the confirmation window to continue the update.

Step 6. Click Finish to close the tool.

Step 7. Click Yes in the confirmation window to restart the computer and apply the configuration on the system board.

Note: Do not turn off the computer or disconnect the computer from ac power during the whole process.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

“Remove the battery pack”

“Remove the system board”

Step 1. Peel off the touchpad waterproof mylar.

Step 2. Disconnect and remove the touchpad cable.

Make sure the following FRUs (CRUs) have been removed:

“Remove the lower case”

Step 1. Disconnect the battery pack cable from the system board.

Step 2. Disconnect the EDP cable and antenna cables. Then, remove four screws.

Step 3. Open the hinges.

Step 4. Remove the LCD unit.

Attention: When disassembling the LCD unit, handle the LCD unit and upper case with care.

Make sure the following FRUs (or CRUs) have been removed:

“Remove the lower case”

“Remove the memory module and shielding”

“Remove the battery pack”

“Remove the solid-state drive and thermal pad”

“Remove the Wi-Fi card”

“Remove the USB board and cable”

“Remove the CMOS battery”

“Remove the fingerprint reader and cable (for selected models)”

“Remove the system board”

“Remove the touchpad cable”

“Remove the LCD unit”

After these parts are removed, the upper case is what remains.

The LCD unit as a whole is not a FRU. Instead, it contains FRUs as its components. Before disassembling the LCD unit, make sure it has been detached from the upper case assembly. The disassembly process involves removing the following components in order:

• LCD bezel

• Hinge covers

• LCD panel with hinges

• Microphone rubbers

• Camera board

• EDP cable

• LCD cover

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

Step 1. Insert your fingernails under the lower inner side of the LCD bezel and then carefully pull the LCD bezel outwards. Repeat this action along the inner edges of the LCD bezel until all hooks that secure the LCD bezel are detached.

Attention: Do not pull the LCD bezel from the outer sides of the LCD bezel, otherwise the hooks may be damaged. The lower side of the LCD bezel is fixed to the LCD panel with adhesive tape. Detach with care.

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

“Remove the LCD bezel”

Step 1. Remove the hinge covers.

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

“Remove the LCD bezel”

“Remove the hinge covers”

Step 1. Remove ten hinge screws and then carefully lift the LCD panel with hinges from the LCD cover.

Step 2. Disconnect the EDP cable. Then, remove the LCD panel with hinges.

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

“Remove the LCD bezel”

“Remove the hinge covers”

“Remove the LCD panel with hinges”

Step 1. Remove the microphone rubbers.

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

“Remove the LCD bezel”

“Remove the hinge covers”

“Remove the LCD panel with hinges”

“Remove the microphone rubbers”

Step 1. Remove the camera board.

Make sure the following FRUs (CRUs) have been removed:

“Remove the LCD unit”

“Remove the LCD bezel”

“Remove the hinge covers”

“Remove the LCD panel with hinges”

Step 1. Remove the EDP cable.

Make sure the following FRUs (CRUs) have been removed:

“Remove the lower case”

“Remove the LCD unit”

“Remove the LCD bezel”

“Remove the hinge covers”

“Remove the LCD panel with hinges”

“Remove the microphone rubbers”

“Remove the camera board”

“Remove the EDP cable”

After all the listed components have been removed from the LCD assembly, the remaining part is the LCD cover.