Lenovo 3000 J Series Manual

11 .   
 Lower the microprocessor straight down into the system board socket of the 
system board. 
 
 
   
12. 
 
 Lower the microprocessor retainer. 
13. 
 
 Lock the retainer with the small handle to secure the microprocessor in the 
socket. 
14. 
 
 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).
 
 
   
15. 
 
 Install the heat sink and fan assembly on the system board. 
16....

Replacing the microprocessor (Types 7390, 7391, and 7392) 
Note:   A thermal grease syringe is required to complete the microprocessor 
installation. Make sure the grease syringe is available before beginning the 
procedure. The FRU number for the thermal grease is 91P8835. 
 
1.   
 Remove the cover. See “Removing the cover” on page 114. 
 
2.   
 Lift the fan duct off the heat sink fan. 
 
3.   
 Disconnect the heat sink and fan assembly cable from the system board. See 
“Identifying parts on the...

6.   
 Lift the small handle 
1. 
 
 
 
 
 
Important 
Do not touch the gold contacts on the bottom of the microprocessor. If 
you must touch the microprocessor, touch only the sides.
 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...

9.   
 Holding the microprocessor with your fingers, position the microprocessor so 
that the small triangle on one corner is aligned with the corresponding 
triangle on the microprocessor socket.
 
 
   
10. 
 
 Holding the microprocessor with your fingers, remove the protective cover 

2 that protects the gold contacts on the new microprocessor 
1.
 
 
   
11 . 
 
 Lower the microprocessor straight down into the system board socket of the 
new system board. 
 
 
   
12. 
 
 Lower and latch the handle...

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. 
 
 Install the heat sink and fan assembly on the system board. 
15. 
 
 Connect the heat sink and fan assembly to the system board. See “Identifying 
parts on the system board” on page 87. 
16. 
 
 Position the fan duct on the heat sink fan. 
17. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
Chapter...

Replacing the hard disk drive 
 
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.   
 Remove the two screws that secure the hard disk drive bracket. 
 
 
   
 
4.   
 From the front of the chassis, slide the drive bracket to the left until it is free 
of the retaining clips in the bottom of the chassis. It can now be can be 
removed from the chassis. 
 
5.   
 Disconnect the...

Replacing an optical drive 
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. 
 
 Remove the screws that secure the drive in the drive bay assembly. 
 
 
   
4. 
 
 Slide the drive being replaced out the front of the drive bay assembly. 
5. 
 
 Slide the new drive into the bay until the screws holes on each side are aligned 
and install the screws that secure the drive to the drive...

Replacing the diskette drive 
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. 
 
 Remove the screws at the bottom of the diskette drive that secure the drive to 
the drive bay assembly. 
 
 
   
4. 
 
 Slide the diskette drive out of the drive bay assembly. 
5. 
 
 Slide the new drive into the bay until the screws holes at the bottom of the 
drive are aligned and install the screws...

Replacing the power switch/ LED assembly 
 
1.   
 Remove 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.   
 Remove the hard disk drive. See “Replacing the hard disk drive” on page 140. 
 
4.   
 Disconnect the power switch/LED assembly cable from the system board. See 
“Identifying parts on the system board” on page 116. 
 
5.   
 Remove the screw that secures the power switch/LED assembly to...

Replacing the front panel card 
 
1.   
 Remove 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 the front panel assembly cables from the system board. See 
“Identifying parts on the system board” on page 116. 
 
4.   
 Remove the screw that secures the front panel card assembly to the chassis. 
 
 
   
 
5.   
 Note the front panel assembly cable routing and remove the assembly...