Lenovo 3000 J Series Manual

							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 any locking devices such as a padlock that secure the cover. 
5. 
 
 Remove the two screws at the rear of the computer cover and slide the cover to 
the rear. 
 
 
 
Locations 
The following illustration will help you locate the major FRUs in the computer. 
   
 
 

1 Fan plenum, fan, 
and heat sink 

6 Diskette drive 

2 Microprocessor 
7 Front panel card 

3 Optical drive 
8 Memory modules 

4 Power switch/LED 
assembly 

9 System board 

5 Hard disk drive 
10 Power supply 
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 115 
						

							Identifying parts on the system board 
System board locations are different depending on the machine type. 
Machine Types 7390, 7391, and 7392 
   
 
 

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
 
 
116 Lenovo 3000 J Series 
						

							Machine Types 7396, 7397, and 7398 
   
 
 

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 
 
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 117 
						

							Removing and replacing the drive bay assembly 
Yo u will need to remove the drive bay assembly to access some FRUs. 
1.   
 Remove the computer cover. See “Removing the cover” on page 114. 
2. 
 
 Remove the front bezel by releasing the three tabs and pivoting the top of the 
bezel outward. 
 
 
   
3. 
 
 Remove the two screws at the front of the chassis securing the drive bay 
assembly. 
 
 
 
 
 
118 Lenovo 3000 J Series 
						

							4.   
 Slide the drive bay assembly forward until it stops. Disconnect the power 
supply and signal cables from the drives. Pivot the rear of the drive bay 
assembly upward to remove it completely from the computer.
 
 
 
Note:   To allow easier access to the cables, lift the fan plenum off the heat sink. 
See “Locations” on page 115. 
5. 
 
 Reverse this procedure to replace the drive bay assembly and bezel.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 119 
						

							Replacing a memory module 
1.   
 Remove the cover. See “Removing the cover” on page 114. 
2. 
 
 Remove the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
3. 
 
 Locate the memory connectors. See “Identifying parts on the system board” on 
page 116. 
4. 
 
 Open the retaining clips and remove the failing memory module. 
 
 
   
5. 
 
 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. 
 
 
   
6. 
 
 Replace the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
7. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
120 Lenovo 3000 J Series 
						

							Replacing a PCI adapter 
1.   
 Remove the computer cover. See “Removing the cover” on page 114. 
2. 
 
 Remove the screw that secures the adapter retainer and remove the retainer. 
 
 
   
3. 
 
 Remove the failing adapter. 
4. 
 
 Remove the new adapter from its static-protective package. 
5. 
 
 Install the new adapter into the appropriate connector on the system board. 
 
 
   
6. 
 
 Reinstall the adapter retainer and screw that secures the retainer. 
7. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 121 
						

							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. 
 
 
Important 
Refer to “Safety notices (multi-lingual translations)” on page 7 for information 
about replacing and disposing of the battery.
1.   
 Remove the cover. See “Removing the cover” on page 114. 
2. 
 
 Locate the battery. See “Identifying parts on the system board” on page 116. 
3. 
 
 Depending on the location of the CMOS battery in the computer, you might 
have to remove the drive bay assembly to access the battery. If necessary, see 
“Removing and replacing the drive bay assembly” on page 118. 
4. 
 
 If necessary, remove any adapters that impede access to the battery. See 
“Replacing a PCI adapter” on page 121 for more information. 
5. 
 
 Remove the old battery. 
 
 
   
6. 
 
 Install the new battery. 
 
 
   
7. 
 
 Replace the drive bay assembly if it was removed. See “Removing and 
replacing the drive bay assembly” on page 118. 
8. 
 
 Replace any adapters that were removed to gain access to the battery. See 
“Replacing a PCI adapter” on page 121 for more information. 
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 144.
 
 
122 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 cover. See “Removing the cover” on page 114. 
 
2.   
 Remove the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
 
3.   
 Disconnect all power supply cables from the drives. 
 
4.   
 Disconnect all power supply cables from the system board. See “Identifying 
parts on the system board” on page 116. 
 
5.   
 Remove the hard disk drive. See “Replacing the hard disk drive” on page 140. 
 
6.   
 The system board must be moved out of the way to remove the power supply. 
Remove the screws that secure the system board to the chassis and slide the 
system board away from the power supply. 
Note: 
 Yo u do not have to remove the system board from the chassis to 
remove the power supply. 
 
7.   
 At the rear of the chassis, remove the three screws that secure the power 
supply. Also remove the screw that secures the power supply at the front. 
 
 
   
 
8.   
 Lift the power supply out of the chassis. 
 
9.   
 Install the new power supply and install the three screws that secure the 
power supply at the rear of the chassis and install the screw that secures the 
power supply at the front. 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 123 
						

							10.   
 Position the system board so that the screws holes are aligned and install the 
system board screws. 
11 . 
 
 Install the hard disk drive. Make sure to route the power supply cable for the 
system board underneath the hard disk drive. See “Replacing the hard disk 
drive” on page 140. 
12. 
 
 Reconnect all other power supply cables to the system board and the drives. 
See “Identifying parts on the system board” on page 116. Make sure the cables 
are correctly routed. 
13. 
 
 Replace the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
14. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
124 Lenovo 3000 J Series