LENOVO THINKCENTRE M70A (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. Ensure 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.

Attention: Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you think are 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, ensure 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. Ensure 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 nonconductive clip, approximately 8 centimeters (3 inches) from the end.

Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Remember: 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.

Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately.

Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool.

CAUTION: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures.

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 Field Replaceable Units (FRUs)

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. Remember: 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. Remember: There must be a complete circuit to cause electrical shock. By observing the above rule, you may prevent a current from passing through your body.

When using a tester, 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; these instructions 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, 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. 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

and similar units. (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.

The guide consists of a series of steps presented in a checklist. 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 frame ground.

b. The power cord should be the appropriate type as specified in the parts listings.

c. Insulation must not be frayed or worn.

4. Remove the cover.

5. Check for any obvious alterations. Use good judgment as to the safety of any alterations.

6. 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.

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

8. 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 while handling the part.

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 the black side of 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 is desirable but not required to protect against ESD damage.

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

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

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

Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

DANGER: Electrical current from power, telephone and communication cables is hazardous.

To avoid a shock hazard:

Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm.

Connect all power cords to a properly wired and grounded electrical outlet.

Connect to properly wired outlets any equipment that will be attached to this product.

When possible, use one hand only to connect or disconnect signal cables.

Never turn on any equipment when there is evidence of fire, water, or structural damage.

Disconnect the attached power cords, telecommunications systems, networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

Connect and disconnect cables as described in the following tables when installing, moving, or opening covers on this product or attached devices.

CAUTION: If your system has a module containing a lithium battery, replace it only with the same module type made by the same manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed of. Do not:

Throw or immerse into water

Heat to more than 100°C (212°F)

Repair or disassemble

Dispose of the battery as required by local ordinances or regulations.

CAUTION: When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following:

Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device.

Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.

DANGER: Some laser products contain an embedded Class 3A or Class 3B laser diode. Note the following: Laser radiation when open. Do not stare into the beam, do not view directly with optical instruments, and avoid direct exposure to the beam.

CAUTION: Use safe practices when lifting.

The following weight indications are provided with symbols: ≥18 kg (37 lb), ≥32 kg (70.5 lb), ≥55 kg (121.2 lb).

CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:

If you are instructed to replace a FRU but the replacement does not correct 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 the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one.

If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms.

Always try to run a low-level format operation before replacing a hard disk drive or a solid-state drive. This will cause all customer data on the drive to be lost. Ensure that the customer has a current backup of the data before you perform this task.

Attention: The drive startup sequence in the computer you are servicing might have been changed. Be extremely careful during write operations such as copying, saving, or formatting. If you select an incorrect drive, data or programs can be overwritten.

Some components mounted on a system board are very sensitive. Improper handling of a system board can cause damage to those components, and may cause a system malfunction.

Attention: When handling a system board:

Do not drop a system board or apply any excessive force to it.

Avoid rough handling of any kind.

Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset.

Use the error codes displayed on the screen to diagnose failures. If more than one error code is displayed, begin the diagnosis with the first error code. Whatever causes the first error code might also cause false error codes. If no error code is displayed, see whether the error symptom is listed in the “Symptom-to-FRU Index” section.

* for selected models

* for selected models

* for selected models

Attention: The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive.

Use the following procedure to help determine the cause of the problem:

1. Turn off the computer and all external devices.

2. Check all cables and power cords.

3. Set all display controls to the middle position.

4. Turn on all external devices.

5. Turn on the computer.

Look for displayed error codes.

Listen for beep codes.

Look for readable instructions or a main menu on the display.

If you did not receive the correct response, proceed to step 6.

If you do receive the correct response, proceed to step 7.

6. Look at the following conditions and follow the instructions:

If you hear beep codes during POST, go to “Beep symptoms”.

If the computer displays a POST error, go to “POST error codes”.

If the computer hangs and no error is displayed, continue at step 7.

7. Run the Diagnostic programs.

If you receive an error, replace the part that the diagnostic program calls out.

If the test stops and you cannot continue, replace the last device tested.

If possible, have this information available when requesting assistance from Service Support and Engineering functions.

Machine type and model

Processor or hard disk drive upgrades

Failure symptom

Do diagnostics indicate a failure?

What, when, where, single, or multiple systems?

Is the failure repeatable?

Has this configuration ever worked?

If it has been working, what changes were made prior to its failing?

Is this the original reported failure?

Diagnostics version

Type and version level

Hardware configuration

Print (print screen) configuration currently in use

BIOS level

Operating system software

Type and version level

Notes: To eliminate confusion, identical systems are considered identical only if they:

1. Are the exact machine type and models

2. Have the same BIOS level

3. Have the same adapters/attachments in the same locations

4. Have the same address jumpers/terminators/cabling

5. Have the same software versions and levels

6. Have the same Diagnostic Diskettes (version)

7. Have the same configuration options set in the system

8. Have the same setup for the operating system control files

The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first. Always begin with “Service checkout”. This index can also be used to help you decide which FRUs to have available when servicing a computer. If you are unable to correct the problem using this index, go to “Undetermined problems”.

Notes:

The Symptom-to-FRU index is not specific to any machine type and are applicable to all computers.

If you have both an error message and an incorrect audio response, diagnose the error message first.

If you cannot run the diagnostic tests or you get a diagnostic error code when running a test, but did receive a POST error message, diagnose the POST error message first.

If you did not receive any error message, look for a description of your error symptoms in the first part of this index.

If you suspect a power problem, use the following procedures.

Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST. The following table describes the beep symptoms.

Each time you turn on the system, it performs a series of tests that check the operation of the system and some options. This series of tests are called the Power-On Self-Test, or POST. If the POST detects a problem, an error message appears on the screen. A single problem might cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time.

This section provides instructions on how to find out the failing devices or adapters.

1. Turn off the computer.

2. Remove or disconnect the following components (if installed) one at a time.

a. External devices (modem, printer, or mouse)

b. Any adapters

c. Memory modules

d. Extended video memory

e. External Cache

f. External Cache RAM

g. Hard disk drive

h. Diskette drive

3. Turn on the computer to retest the system.

4. Repeat steps 1 through 3 until you find the failing device or adapter.

If all devices and adapters have been removed, and the problem continues, replace the system board.

1. Remove all media from the drives and turn off all connected devices.

2. Insert the BIOS update disc into the optical drive, and then turn off the computer.

3. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the Clear CMOS jumper.

4. Move the jumper from the standard position to the maintenance position.

5. Reconnect the power cords for the computer and the monitor to electrical outlets.

6. Turn on the computer and the monitor. When the computer beeps, the recovery process begins.

7. After the recovery process is completed, the computer will be turned off automatically.

Note: Depending on the computer model, the recovery process will take two to three minutes.

8. Disconnect all power cords from electrical outlets.

9. Move the jumper back to the standard position.

10. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and the monitor to electrical outlets.

11. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.

12. To prevent data loss, ensure that BIOS settings are restored to an earlier point.

1. Remove all media from the drives and turn off all connected devices and the computer.

2. Disconnect all power cords from electrical outlets. Then, remove any parts that impede access to the Clear CMOS jumper.

3. Move the jumper from the standard position to the maintenance position.

4. Reconnect the power cords for the computer and the monitor to electrical outlets.

5. Turn on the computer and the monitor. When the computer beeps, wait for approximately 10 seconds.

6. Turn off the computer by holding the power button for approximately four seconds.

7. Disconnect all power cords from electrical outlets.

8. Move the jumper back to the standard position.

9. Reinstall all the parts that have been removed. Then, reconnect the power cords for the computer and the monitor to electrical outlets.

10. Turn on the computer and the monitor. When the logo screen is displayed, press F1 or Fn+F1.

11. To prevent data loss, ensure that BIOS settings are restored to an earlier point.

Prerequisite: Before you start, read Chapter 1 “Important safety information” and print the following instructions.

1. Check that:

a. The cables for all connected devices are connected correctly and securely.

b. All components have been reassembled correctly.

c. All connected devices that require ac power are connected to properly grounded and working electrical outlets.

d. All connected devices are enabled in UEFI BIOS.

2. Use an antivirus program to see if the computer has been infected by a virus. If the program detects a virus, remove the virus.

3. Go to “Self-help resources” and follow the instructions for the type of problem you are experiencing.

4. Run the diagnostic program.

5. Recover your operating system. See “Self-help resources”.

6. If the problem persists, contact Lenovo.

A UEFI diagnostic program is preinstalled on the computer. It enables you to test memory modules and internal storage devices, view system information, and check and recover bad sectors on internal storage devices.

To run the UEFI diagnostic program, do the following:

1. Turn on the computer. If the computer cannot be turned on, go to “Basic procedure for resolving computer problems”. If an error code is displayed, go to “Symptom-to-FRU index” for error code descriptions and troubleshooting hints.

2. Repeatedly press and release the F10 key when turning on the computer. The main screen of the UEFI diagnostic program is displayed.

3. Follow the instructions on the screen to use the diagnostic program.

The options on the main screen of the UEFI diagnostic program are as follows:

Note: The options on the main screen might vary, depending on the hardware configuration and the UEFI diagnostic program version preinstalled on the computer.

The Vantage app is preinstalled on your computer. To diagnose problems with the Vantage app:

1. Type Vantage in the Windows search box and press Enter.

2. Follow the on-screen instructions and run a hardware scan.

If you are unable to isolate and resolve the problem after running the Vantage app, save and print the log files created by the program. You might need the log files when you speak to a Lenovo technical support representative.

To reset or restore Windows, you can:

• Use Lenovo recovery options.

1. Access Lenovo’s recovery creation resources.

2. Follow the on-screen instructions.

• Use Windows recovery options.

1. Access PC support resources.

2. Detect your computer or manually select your computer model.

3. Navigate to the troubleshooting menu to diagnose the operating system for recovery instructions.

Use the Vantage app to:

• Configure device settings.

• Download and install UEFI BIOS, drivers and firmware updates.

• Secure your computer from outside threats.

• Diagnose hardware problems.

• Check the computer warranty status.

• Access User Guide and helpful articles.

Note: The available features vary depending on the computer model. To access the Vantage app, type Vantage in the Windows search box.

To access Windows help information:

• Type Get Help or Tips in the Windows search box.

• Use Windows Search.

• Access the Microsoft support Web site.

Do not open the static-protective package containing the new part until the defective part has been removed and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage computer components and options.

When you handle options and other computer components, take these precautions to avoid static-electricity damage:

• Limit your movement. Movement can cause static electricity to build up around you.

• Always handle options and other computer components carefully. Handle PCI/PCIe cards, memory modules, system boards, and CPUs by the edges. Never touch any exposed circuitry.

• Prevent others from touching the options and other computer components.

• Touch the static-protective package containing the part to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity from the package and your body before you install or replace a new part.

• When possible, remove the new part from the static-protective package, and install it directly in the computer without setting the part down. When this is not possible, place the static-protective package on a smooth, level surface and place the part on the package.

• Do not place the part on the computer cover or other metal surface.

Ensure that the following common service tool kit is prepared before you service the computer.

Note: The silicone grease can be applied to the surfaces of the CPU and heat sink to eliminate air gaps. For parts with silicone grease applied, it is suggested that you apply new grease during the installation.

Your computer contains the following types of CRUs and FRUs:

• Self-service CRUs: Refer to parts that can be replaced easily by customer themselves or by trained service technicians at an additional cost.

• Optional-service CRUs: Refer to parts that can be replaced by customers with a greater skill level. Trained service technicians can also provide service to replace the parts under the type of warranty designated for the customer’s machine.

• FRUs: Refer to parts that are more complicated to replace and it is recommended that these should be replaced by trained service technicians. If customers elect to replace the FRUs by themselves, we recommend that you ensure the correct instructions provided by Lenovo are carefully followed.

* for selected models

Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Turn off the computer and remove all connected devices and cables.

2. Disconnect the computer from ac power and all connected cables.

3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the computer cover is facing up.

1. Remove the stand from the computer. Detach the stand arm from the base if needed.

2. Connect the stand arm and base of a new stand. Mount the stand on the computer.

Note: Some computer models might not be shipped with a computer stand. In this case, remove the mylar over the VESA mounting first if you want to install a new computer stand.

1. Remove the stand from the computer. Detach the stand arm from the base if needed.

2. Connect the stand arm and base of a new stand. Mount the stand on the computer.

Note: Some computer models might not be shipped with a computer stand. In this case, remove the mylar over the VESA mounting first if you want to install a new computer stand.

1. Remove the stand from the computer. Detach the stand arm from the base if needed.

2. Connect the stand arm and base of a new stand. Mount the stand on the computer.

Note: Some computer models might not be shipped with a computer stand. In this case, remove the mylar over the VESA mounting first if you want to install a new computer stand.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the rear cover, turn off the computer and wait several minutes until the computer is cool.

For access, do the following:

1. Turn off the computer and remove all connected devices and cables.

2. Unlock any locking device that secures the computer cover.

3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the computer cover is facing up.

4. Remove the computer stand, if any. See “Computer stand (for selected models)” on page 51.

Note: Some computer models might not be shipped with a serial connector module. In this case, remove the dummy cover for the serial connector module first.

Replacement steps:

1. Grab the rear cover from the upper edge of the computer’s VESA mounting and lift the rear cover.

2. Align a new rear cover to the computer back and install it.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

Replacement steps:

1. Push the hook that secures the upper edge of the system board shield outward, hold the right edge of the system board shield, and remove the shield.

2. Install a new system board shield in reverse order.

Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines:

• Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for frequent changes or replacement.

• Before replacing the internal storage drive, make a backup copy of all the data that you want to keep.

• Do not touch the contact edge of the internal storage drive. Otherwise, the internal storage drive might get damaged.

• Do not apply pressure to the internal storage drive.

• Do not make the internal storage drive subject to physical shocks or vibration. Put the internal storage drive on a soft material, such as cloth, to absorb physical shocks.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the relevant instructions. Also observe precautions for handling SSDs.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

The M.2 SSD slots are located on the system board. Slot 1 is for M90a models only, supporting up to Gen 5 SSDs. Slot 1 and Slot 2 support up to Gen 4 SSDs. SSD installation should follow the sequence: Slot 1, Slot 2, then Slot 3. In systems equipped with an NPU card, Slot 3 is reserved for the NPU card.

Removal steps for the SSD without a heat sink:

1. Remove the screw that secures the SSD to the system board. Screw specifications:

2. Remove the SSD and the thermal pad (if any) depending on the computer model.

To install, follow the steps in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the relevant instructions. Also observe precautions for handling SSDs.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

Removal steps for the SSD with a heat sink:

1. Remove the screw which secures the heat sink to the system board. Screw specifications:

2. Remove the heat sink.

3. Pinch the two latches on top of the heat sink to remove the heat sink cover.

4. Remove the SSD and the thermal pad (if any) depending on the computer model.

Notes:

• Install a new SSD in reverse order.

• Remove the film that covers the thermal pad (if any) when installing the M.2 solid-state drive, heat sink, and thermal pad.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

This computer supports two memory slots beside the CPU. If you have only one memory module, install it to the slot that is closer to the CPU. If you have two memory modules, install them to both slots.

Replacement steps:

1. Open the buckles on the two sides and remove the memory module.

2. Insert a new memory module into the memory slot and press it down.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

Replacement steps:

1. Remove four screws from the VESA mount bracket. Lift the VESA mount bracket and disconnect the cover presence switch cable from the system board. Screw specifications:

2. Install a new VESA mount bracket in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

2. Lay the VESA mount bracket down while making the cover presence switch cable facing up.

Replacement steps:

1. Detach the tape securing the cover presence switch cable to the VESA mount bracket. Press the two latches on the cover presence switch and guide it through the hole on the VESA mount bracket.

2. Install a new cover presence switch in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

2. Locate the M.2 NPU card slot on the system board (refer to M.2 SSD slot illustration).

Replacement steps:

1. Remove the NPU card and the heat sink kit in the following steps:

a. Remove two screws that fix the NPU card with its heat sink to the system board. Screw specifications:

b. Pull the NPU card with the heat sink away from the M.2 slot on the system board.

c. Remove four screws on the two sides of the heat sink. Screw specifications:

d. Lift the heat sink away from the NPU card. Note: Do not touch the thermal grease while handling the heat sink.

e. Remove the NPU card and the thermal pad (if any).

2. Install a new NPU card and heat sink kit in reverse order.

Notes:

• When installing a new NPU card or heat sink, it’s recommended to clean the old thermal grease and apply new thermal grease (TC-5622 or 7783) for 0.1 grams. Either too much or too little application of grease can cause a thermal problem due to imperfect contact with a component.

• After installing the NPU card and the heat sink kit, stick a gasket on the top right of the NPU heat sink.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

2. Locate the M.2 Wi-Fi slot on the system board. The slot is in the lower right corner of the system board.

Replacement steps:

1. Remove the Wi-Fi card and the Wi-Fi card shield in the following steps:

a. Remove the screw that secures the Wi-Fi card to the system board. Screw specifications:

b. Pull the Wi-Fi card away from the M.2 Wi-Fi card slot.

c. Remove the Wi-Fi card shield from the Wi-Fi card.

d. Disconnect the antennas from the Wi-Fi card.

2. Install a new Wi-Fi card or Wi-Fi card shield in reverse order.

Note: While installing, ensure that you connect the gray cable to the connector labeled AUX (auxiliary) and the black cable to the connector labeled MAIN (main) on the card.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

2. Locate the SD card reader. The SD card reader is located on the lower left side of the system board.

Note: Some models might not be shipped with an SD card reader. In this case, remove the dummy SD card reader cover on the side I/O bezel first if you want to install a new SD card reader.

Replacement steps:

1. Disconnect the SD card reader cable from the system board. Remove two screws from the SD card reader board. Find the screw specification from the following table. Remove the SD card reader with cable.

2. Install a new SD card reader module in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

Replacement steps:

1. Release the three hooks on the side I/O bezel and remove the side I/O bezel.

2. Install a new side I/O bezel in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “NPU card and its heat sink kit (for selected models)”

• “Wi-Fi card and Wi-Fi card shield (for selected models)”

Replacement steps:

1. Remove the serial connector board with cable in the following steps:

a. Disconnect the serial connector board cable from the serial (COM1) connector at the bottom left of the system board.

b. Remove the tape that fixes the serial connector board cable.

c. Remove two screws from the serial connector board. Screw specifications:

d. Remove the serial connector board with cable.

2. Install a new serial connector board with cable in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

The system fan right to the system board can be in the size of either: 110 mm (diameter) x 18 mm (thickness) or 120 mm (diameter) x 19 mm (thickness). The former is for UMA models and the second one is for dGPU models. Both can be replaced in the following steps.

Replacement steps:

1. Remove the system fan in the following steps:

a. Disconnect the system fan cable from the system fan connector, the first connector on the right of the system board.

b. Remove three screws from the system fan and remove the system fan. Screw specifications:

2. Install a new system fan in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

Depending on the model, your product might come with a fixed camera module, a tiltable camera module, or no camera module. For models with no camera module, remove the dummy camera cover first if you want to install a new camera module.

Replacement steps (for the fixed camera module):

1. Disconnect the camera cable and the radar card cable (if available) from the system board. Pry up the camera module cover.

2. Remove two screws from the camera module and remove the camera module. Screw specifications:

CAUTION: Do not pull out the camera module cable with force; otherwise, the cable may be damaged.

3. Install a new camera module in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

Replacement steps (for the tiltable camera module):

1. Disconnect the camera cable and the radar card cable (if available) from the system board. Pry up the camera module hinge cover.

2. Remove two screws from the camera module and remove the camera module. Screw specifications:

CAUTION: Do not pull out the camera module cable with force; otherwise, the cable may be damaged.

3. Install a new camera module in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Although there are no moving parts in the computer after the power cord has been disconnected, the following warnings are required for your safety: Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service technician.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “Serial connector board with cable (for selected models)”

2. Locate the power supply assembly. The power supply assembly composes of the power supply unit, the power connector board, and the power supply assembly cables that connect to them. The power supply unit is right to the system fan, and the power connector board is lower to the system fan and the NPU card (if available).

Replacement steps:

1. Remove the power supply assembly in the following steps:

a. Disconnect the power supply assembly cables from the ac-in power connector and the PSU identification connector on the right of the system board.

b. Peel off the acetate tape that fixes the power supply assembly cables, and remove the cables from the cable hooks.

c. Remove four screws from the power supply unit and two screws from the power connector board. Screw specifications:

d. Remove the power supply unit, the power connector board, and the power supply assembly cables together.

2. Install new power supply assembly in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “Serial connector board with cable (for selected models)”

• “Power supply assembly (for M90a only)”

Replacement steps:

1. Remove one screw from the power connector bracket and pull the power connector bracket outward. Screw specifications:

2. Install a new power connector bracket in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

Replacement steps (for UMA models):

1. Remove the heat sink in the following steps:

a. Loosen four screws that fix the heat sink to the CPU. Note: Carefully loosen the screws from the system board to avoid any possible damage to the system board. The screws cannot be removed from the heat sink.

b. Remove one screw on the right of the heat sink. Screw specifications:

c. Lift the heat sink away. Notes: You might have to gently twist the heat sink to free it from the CPU. Do not touch the thermal grease while handling the heat sink.

2. Install a new heat sink in reverse order.

Note: When installing a new heat sink, it’s recommended to clean the old thermal grease on the CPU and apply new thermal grease (TC-5622 or 7783) for 0.8 grams. Either too much or too little application of grease can cause a thermal problem due to imperfect contact with a component.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

Replacement steps (for dGPU models):

1. Remove the heat sink in the following steps:

a. Loosen four screws that fix the heat sink to the CPU. Note: Carefully loosen the screws from the system board to avoid any possible damage to the system board. The screws cannot be removed from the heat sink.

b. Loosen four screws that fix the heat sink to the GPU card.

c. Remove one screw on the right corner of the heat sink. Screw specifications:

d. Lift the heat sink away. Notes: You might have to gently twist the heat sink to free it from the CPU. Do not touch the thermal grease while handling the heat sink.

2. Install a new heat sink in reverse order.

Note: When installing a new heat sink, it’s recommended to clean the old thermal grease on the CPU and the GPU and apply new thermal grease (TC-5622 or 7783) for 0.8 grams to the CPU and 0.22 grams to the GPU. Either too much or too little application of grease can cause a thermal problem due to imperfect contact with a component.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

2. Locate the GPU slot. The GPU slot is located in the upper left of the system board.

Replacement steps:

1. Remove the GPU card in the following steps:

a. Remove two screws from the GPU card. Screw specifications:

b. Pull the GPU card away from the GPU slot on the system board. Note: Do not touch the thermal grease when handling the GPU card.

2. Install a new GPU card in reverse order.

Note: When installing a new GPU, it’s recommended to clean the old thermal grease on the heat sink and apply new thermal grease (TC-5622 or 7783) for 0.22 grams on the top of the GPU. Either too much or too little application of grease can cause a thermal problem due to imperfect contact with a component.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions. CAUTION: Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect the power, and wait approximately 10 minutes for the components to cool.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “Heat sink”

2. Locate the CPU socket. The CPU socket is in the center right area of the system board.

Replacement steps:

1. Remove the CPU in the following steps:

a. Press down, then lift the CPU handle to release the CPU retainer.

b. Open the CPU retainer.

c. Lift the CPU straight up and out of the CPU socket.

Notes:

• Touch only the edges of the CPU. Do not touch the gold contacts on the bottom.

• Do not drop anything onto the CPU socket while it is exposed. The socket pins must be kept as clean as possible.

2. Install a new CPU in reverse order.

Note: When installing a new CPU, it’s recommended to clean the old thermal grease on the heat sink and apply new thermal grease (TC-5622 or 7783) for 0.8 grams, on the area marked ‘a’ in the illustration. Either too much or too little application of grease can cause a thermal problem due to imperfect contact with a component.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “M.2 solid-state drive (SSD) (for selected models)”

• “Memory module”

• “NPU card and its heat sink kit (for selected models)”

• “Wi-Fi card and Wi-Fi card shield (for selected models)”

• “SD card reader (for selected models)”

• “Serial connector board with cable (for selected models)”

• “System fan”

• “Heat sink”

• “GPU card (for selected models)”

• “CPU”

Replacement steps:

1. Remove the system board in the following steps:

a. Record the cable routing and cable connections, and then disconnect all cables from the system board. See “System board illustration”.

b. Remove seven screws from the system board. Screw specifications:

c. Hold the edge of the system board, and lift it gently away.

2. Install a new system board in reverse order.

CPU socket cover installation procedure: The failing system board must be returned with a CPU socket cover to protect the pins during shipping and handling.

1. After you have removed the CPU from the failing system board, close the CPU retainer. Then, put the lever to the locked position to secure the retainer in place.

2. Note the orientation of the socket cover, and install one side of the socket cover into the CPU socket. Carefully press the other side of the socket cover downward until the socket cover snaps into position.

Note: The CPU socket cover might look slightly different from the illustration.

3. Carefully check the four corners of the socket cover to ensure that the cover is seated securely.

4. Follow any additional instructions that are included with the replacement part you received.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “M.2 solid-state drive (SSD) (for selected models)”

• “Memory module”

• “NPU card and its heat sink kit (for selected models)”

• “Wi-Fi card and Wi-Fi card shield (for selected models)”

• “SD card reader (for selected models)”

• “Serial connector board with cable (for selected models)”

• “System fan”

• “Heat sink”

• “GPU card (for selected models)”

• “CPU”

• “System board”

2. Locate the speakers. The speakers are at the bottom of the computer.

Replacement steps:

1. Remove the speakers in the following steps:

a. Peel off the tape that fixes the speaker cable.

b. Remove four screws from the speakers. Screw specifications:

c. Remove the speakers with cable.

Note: The speakers of M70a and M90a are in different lengths.

2. Install new speakers in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “M.2 solid-state drive (SSD) (for selected models)”

• “Memory module”

• “NPU card and its heat sink kit (for selected models)”

• “Wi-Fi card and Wi-Fi card shield (for selected models)”

• “SD card reader (for selected models)”

• “Serial connector board with cable (for selected models)”

• “System fan”

• “Heat sink”

• “GPU card (for selected models)”

• “CPU”

• “System board”

• “Speakers”

Replacement steps:

1. Gently peel off the two Wi-Fi antennas from the bottom of the LCD bracket.

2. Install new Wi-Fi antennas in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order:

• “Computer stand (for selected models)”

• “Rear cover”

• “System board shield”

• “VESA mount bracket”

• “M.2 solid-state drive (SSD) (for selected models)”

• “Memory module”

• “NPU card and its heat sink kit (for selected models)”

• “Wi-Fi card and Wi-Fi card shield (for selected models)”

• “SD card reader (for selected models)”

• “Serial connector board with cable (for selected models)”

• “System fan”

• “Heat sink”

• “GPU card (for selected models)”

• “CPU”

• “System board”

• “Power supply assembly (for M90a only)”

• “Power connector bracket (for M90a only)”

• “Camera module (for selected models)”

• “Side I/O bezel”

• “Speakers”

Replacement steps:

1. Remove three screws from the side I/O bracket. Screw specifications:

Then, remove the side I/O bracket.

2. Remove 18 screws from the main frame. Screw specifications:

Then, remove the main frame.

3. Remove five screws from the LCD bracket assembly. Screw specifications:

Then, lift the LCD bracket while getting the LCD power cable, the LVDS cable, and the touch cable (if available) through the holes in the LCD bracket.

4. Install a new main frame or LCD bracket assembly in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, remove the following parts, if any, in order (includes removing many internal components up to the “Main frame and LCD bracket assembly”).

Replacement steps:

1. Remove the LCD power cable, the LVDS cable, and the touch board cable (if supported) in the following steps.

• LCD power cable

a. Peel off the tape from the LCD power connector in the lower center of the LCD panel.

b. Unplug the LCD power cable gently.

c. Peel off the tape that fix the LCD power cable to the LCD panel.

• LVDS cable

a. Open the lid of the LVDS connector to the upper left of the LCD power connector on the LCD panel.

b. Pull out the LVDS cable from the connector gently.

• Touch board cable (for selected models)

a. Locate the touch board. The touch board is to the upper left of the LVDS connector on the LCD panel.

b. Unplug the touch board cable from the touch board’s right side.

2. Install a new cable in reverse order.

Prerequisite: Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

For access, do the following:

1. Remove the following parts, if any, in order (includes removing many internal components up to the “Main frame and LCD bracket assembly” and “LCD power cable, LVDS cable, and touch board cable”).

2. Locate the front decoration cover. The front decoration cover is a strip cover at the bottom edge of the screen.

Note: For models with a non-touch screen, the front decoration cover and the LCD panel are combined as one FRU. In this case, replace the front decoration cover and LCD panel assembly directly.

Replacement steps:

1. Remove four screws at the bottom of the LCD panel. Then, remove the front decoration cover from the LCD panel. Screw specifications:

2. Install the front decoration cover and the LCD panel in reverse order.