Lenovo 3000 J Series Manual

7.   
 Lift the microprocessor 
2 straight up and out of the socket. 
 
 
 
Notes:   
a. 
 
 Your microprocessor and socket might look different than the one 
illustrated. 
b. 
 
 Note the orientation of the microprocessor in the socket. Look for the small 
triangle on one corner of the microprocessor. This is important when 
reinstalling the microprocessor on the new system board. 
c. 
 
 Do not drop anything onto the microprocessor socket while it is exposed. 
The socket pins must be kept as clean as...

11 .   
 Lower the microprocessor straight down into the socket.
 
 
 
Note:   Install the black protective cover that was removed from the new 
microprocessor onto the defective microprocessor after the installation is 
complete. 
12. 
 
 Lower the small handle to secure the microprocessor in the socket. 
13. 
 
 Use the thermal grease syringe to place five drops of grease on the top of the 
microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the 
grease syringe).
 
 
   
14....

Replacing the primary hard disk drive 
 
Important 
When you install a new hard disk drive, you also need a set of Product 
Recovery discs. The set of Product Recovery discs will enable the contents of the 
hard disk to be restored to the same state as when the computer was 
originally shipped from the factory. For more information on recovering 
factory-installed software, refer to “Recovering software” in the User Guide.
1. 
 
 Remove the left-side and right-side covers. See “Removing the covers” on...

Replacing an optical drive 
1.   
 Remove the left-side and right-side covers. See “Removing the covers” on page 
84. 
2. 
 
 Disconnect the power cable and signal cable from the optical drive. 
3. 
 
 Remove the two screws that secure the drive on each side. 
 
 
   
4. 
 
 Slide the drive being replaced out the front of the computer. 
5. 
 
 If the drive you are replacing has jumpers on the rear, make sure the jumpers 
on the new drive are in the same exact position as the drive being replaced. 
6....

Replacing the diskette drive 
1.   
 Remove the left-side and right-side covers. See “Removing the covers” on page 
84. 
2. 
 
 Disconnect the signal and power cables from the rear of the hard disk drive. 
Note: 
 Yo u will probably have to disconnect cables that are connected to the 
system board and other drives to allow the diskette drive to be removed 
from inside the chassis. 
3. 
 
 Remove the two screws that secure the drive on each side. 
 
 
   
4. 
 
 Slide the drive toward the rear of the...

Replacing the power switch/ LED assembly 
1.   
 Disconnect the power switch/LED assembly cable from the system board. See 
“Identifying parts on the system board” on page 87. 
2. 
 
 Remove the front bezel. See “Removing and replacing the front bezel” on page 
89. 
3. 
 
 Remove the power switch/LED assembly by disconnecting it from the inside of 
the bezel. 
4. 
 
 Install the new power switch/LED assembly into the bezel. 
5. 
 
 Route the cable for the new power switch/LED assembly through the hole in...

Replacing the front panel card assembly 
1.   
 Remove the left-side and right-side covers. See “Removing the covers” on page 
84. 
2. 
 
 Remove the front bezel. See “Removing and replacing the front bezel” on page 
89. 
3. 
 
 Disconnect the front USB cable and the front audio cable from the system 
board. See “Identifying parts on the system board” on page 87. 
4. 
 
 Remove the screw on the front of the chassis that secures the front panel 
assembly. 
 
 
   
5. 
 
 Route the new front panel cable...

Completing the FRU replacement 
After replacing FRUs, you need to install any removed parts, replace the cover, and 
reconnect any cables, including telephone lines and power cords. Also, depending 
on the FRU that is replaced, you might need to confirm the updated information in 
the Setup Utility program. 
Note:   When the power cord is first plugged in, the computer might appear to turn 
on for a few seconds and then turn off. This is a normal sequence to enable 
the computer to initialize. 
1....

Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 
7397, and 7398) 
 
Important 
Before you replace any FRU, read Chapter 2, “Safety information,” on page 3. 
These precautions and guidelines will help you work safely.
 FRU replacements are to be done by trained service technicians only. 
This chapter does not contain a remove and replace procedure for all FRUs. Only 
the major FRUs are documented. 
Note:   The computer might look slightly different than the illustrations in this 
chapter.
 
 
©...

Rear connectors 
The following illustration shows the locations of the connectors on the rear of the 
computer. 
   
 
 

1 Standard mouse connector 
9 PCI Express x1 adapter or Express x16 
graphics adapter connector (some 
models) 

2 Parallel connector 
10 Audio line out connector 

3 Ethernet connector 
11 Microphone connector 

4 Audio line in connector 
12 USB connectors 

5 Power cord connector 
13 USB connectors 

6 Voltage selection switch (some 
models) 

14 VGA monitor connector...