Lenovo 3000 J Series Manual
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3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. 4. Remove the two thumb screws at the rear of the left-side cover and slide the cover to the rear to remove. 5. If necessary, remove the right-side cover in the same manner. Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 85
Locations The following illustration will help you locate the major FRUs in the computer. 1 Heat sink and fan 6 Front panel card 2 Microprocessor 7 Hard disk drive 3 Memory modules 8 System board 4 Optical drive 9 System fan 5 Diskette drive 10 Power supply 86 Lenovo 3000 J Series
Identifying parts on the system board There are different system boards depending on the machine type. Machine Types 7387, 7388, and 7389 1 Microprocessor fan connector 11 Front panel (power switch/LED) connector 2 Microprocessor and heat sink 12 S ATA IDE connectors (2) 3 Memory connector 1 13 Front USB connectors (2) 4 Memory connector 2 14 Serial (COM2 connector) 5 Clear CMOS/Recovery jumper 15 PCI adapter connectors 6 Power supply connector 16 Front audio connector 7 Diskette drive connector 17 PCI Express x16 graphics adapter connector 8 IDE connector 1 18 PCI Express x1 graphics adapter connector 9 IDE connector 2 19 System fan connector 10 CMOS battery 20 12V power connector Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 87
Machine Types 7393, 7394, and 7395 1 Microprocessor and heat sink 11 Front USB connectors (2) 2 Microprocessor fan connector 12 Serial (COM2) connector 3 Memory connector 1 13 Front audio connectors 4 Memory connector 2 14 PCI adapter connectors (2) 5 Power connector 15 PCI Express x1 graphics adapter connector 6 Diskette drive connector 16 CMOS battery 7 IDE connector 17 PCI Express x16 graphics adapter connector 8 S ATA IDE connectors (2) 18 System fan connector 9 Front panel (power switch/LED) connector 19 12V power connector 10 Clear CMOS/Recovery jumper 88 Lenovo 3000 J Series
Removing and replacing the front bezel The front bezel must be removed to replace some FRUs. 1. Remove both the left-side and right-side covers. See “Removing the covers” on page 84. 2. Disconnect the cable for the power switch/LED assembly from the system board. See “Identifying parts on the system board” on page 87 for the connector location. 3. Remove the screws that secure the bezel. There are two on each side. 4. There are three plastic tabs on each side of the bezel. While applying pressure on the top of the bezel, release each tab starting with the tabs at the top. Note: The power switch/LED assembly cable is connected inside the bezel. Be careful to not damage the cable and connectors when removing the bezel from the chassis. 5. When the tabs are all released, remove the bezel from the chassis. To replace the bezel: 6. Route the power switch/LED cable through the hole in the chassis and to the system board. 7. Align the tabs in the chassis and snap it into position. Install the two screws on each side to secure the bezel. 8. Reconnect the power switch/LED cable to the system board. Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 89
Replacing a memory module 1. Remove the left-side cover. See “Removing the covers” on page 84. 2. Locate the memory connectors. See “Identifying parts on the system board” on page 87. 3. Open the retaining clips and remove the failing memory module. 4. Make sure the notch 1 on the new memory module is aligned correctly with the connector key 2 on the socket. Insert the memory module straight down into the connector until it snaps into position and the retaining clips are closed. 5. Go to “Completing the FRU replacement” on page 112. 90 Lenovo 3000 J Series
Replacing a PCI adapter 1. Remove the left-side cover. See “Removing the covers” on page 84. 2. Remove the screw securing the adapter being replaced. 3. Pull the adapter straight out of the PCI connector. 4. Remove the new adapter from its static-protective package. 5. Install the new adapter into the appropriate PCI connector. 6. Install the screw to secure the new adapter. 7. Go to “Completing the FRU replacement” on page 112. Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 91
Replacing the CMOS battery If the CMOS battery fails, the date, time, and configuration information (including passwords) are lost. An error message is displayed when you turn on the computer. 1. Refer to “Safety notices (multi-lingual translations)” on page 7 for information about replacing and disposing of the battery. 2. Turn off the computer and all attached devices. 3. Remove the left-side cover. See “Removing the covers” on page 84. 4. Locate the battery. See “Identifying parts on the system board” on page 87. 5. If necessary, remove any adapters that impede access to the battery. See “Replacing a PCI adapter” on page 91 for more information. 6. Remove the old battery. 7. Install the new battery. 8. Replace any adapters that were removed to gain access to the battery. See “Replacing a PCI adapter” on page 91 for instructions for replacing adapters. Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. This is normal after replacing the battery. 9. Go to “Completing the FRU replacement” on page 112. 92 Lenovo 3000 J Series
Replacing the power supply Attention 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 servicable parts inside these components. 1. Remove the left-side cover. See “Removing the covers” on page 84. 2. Disconnect all power supply cables from the drives. 3. Disconnect all power supply cables from the system board. See “Identifying parts on the system board” on page 87. 4. At the rear of the chassis, remove the four screws that secure the power supply. 5. Lift the power supply out of the chassis. 6. Install the new power supply and insert the four screws that hold the power supply in place. 7. Reconnect all power supply cables to the system board and the drives. See “Identifying parts on the system board” on page 87. Make sure the cables are correctly routed. 8. Go to “Completing the FRU replacement” on page 112. Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 93
Replacing the system board (Types 7393, 7394, and 7395) Note: When replacing the system board a new retention module for the microprocessor heat sink is required. Make sure you have a new retention module before beginning this procedure. 1. Remove both side covers. See “Removing the covers” on page 84. 2. Lay the computer on the right side to make the system board accessible. 3. Remove any adapter cards installed in the PCI connectors. See “Replacing a PCI adapter” on page 91. 4. Carefully take note of the location of all cable connections on the system board and disconnect all cables. See “Identifying parts on the system board” on page 87. 5. Remove the screws that secure the system board to the chassis. 6. Lift the system board out of the chassis. 7. Remove the memory modules from the failing system board and install them in the same location on the new system board. 8. Remove the four screws 1 securing the heat sink and fan assembly to the system board. 9. Lift the heat sink and fan assembly off the failing system board. Lay the heat sink on its side so that the thermal grease does not come in contact with anything. 94 Lenovo 3000 J Series