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. 
 
 Connect the heat sink and fan assembly cable to the system board. See 
“Identifying parts on the system board” on page 87. 
17. 
 
 Go to “Completing the FRU replacement” on page 112.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 135 
						

							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 system board” on page 116. 
 
4.   
 Rotate handle 
1 to release the heat sink clamp and then disengage the 
clamp from the plastic retention bracket. 
 
 
   
 
5.   
 Lift the heat sink and fan assembly off the system board. 
 
136 Lenovo 3000 J Series 
						

							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 when 
reinstalling the microprocessor on the system board. 
c. 
 
 Do not drop anything onto the microprocessor socket while it is exposed. 
The socket pins must be kept as clean as possible.
 8. 
 
 Make sure that the small handle is in the raised position. 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 137 
						

							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 to secure the microprocessor in the socket. 
 
138 Lenovo 3000 J Series 
						

							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 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 139 
						

							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 signal and power cables from the rear of the hard disk drive. 
 
6.   
 Remove the four screws that secure the hard disk drive to the bracket and 
remove the drive from the bracket. 
 
7.   
 Position the new drive into the hard disk drive bracket so that the screw holes 
on each side are aligned and install two screws into each side of the drive. 
 
8.   
 Reconnect the signal and power cables to the rear of the hard disk drive. 
 
9.   
 Position the hard disk drive bracket so that it engages the retaining clips in 
the bottom of the chassis when you slide the bracket to the right. 
10. 
 
 Slide the hard disk drive bracket to the right until the screw holes are aligned 
and install the screws. 
11 . 
 
 Reinstall the drive bay assembly and connect the power and signal cables to 
the drives. 
12. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
140 Lenovo 3000 J Series 
						

							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 bay assembly. 
6. 
 
 Reinstall 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.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 141 
						

							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 that secure the drive to the drive bay 
assembly. 
6. 
 
 Reinstall 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.
 
 
142 Lenovo 3000 J Series 
						

							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 the chassis. 
 
 
   
 
6.   
 Note the power switch/LED assembly cable routing and remove the assembly 
from the chassis. 
 
7.   
 Route the cable for the new power switch/LED assembly through the hole in 
the chassis and to the system board. 
 
8.   
 Install the power switch/LED assembly into the chassis and secure the 
assembly with the screw. 
 
9.   
 Connect the power switch/LED cable to the system board. 
10. 
 
 Reinstall the hard disk drive. See “Replacing the hard disk drive” on page 
140. 
11 . 
 
 Reinstall the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
12. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 143 
						

							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 from 
the chassis. 
 
6.   
 Route the cable for the new front panel card assembly through the hole in the 
chassis and to the system board. 
 
7.   
 Install the front panel card assembly into the chassis and secure it with the 
screw. 
 
8.   
 Connect the front panel assembly cables to the system board. 
 
9.   
 Reinstall the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
10. 
 
 Go to “Completing the FRU replacement.”
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. 
 
 Ensure that all components have been reassembled correctly and that no tools 
or loose screws are left inside the computer. 
2. 
 
 Replace the cover and secure it with two screws. 
 
144 Lenovo 3000 J Series