Lenovo 3000 J Series Manual

							Replacing the system board (Types 7396, 7397, and 7398) 
Note:   When replacing the system board, a new retention bracket for the 
microprocessor heat sink is required. Make sure you have a new retention 
bracket before beginning this procedure. 
 
1.   
 Remove the cover. See “Removing the cover” on page 11 4 
 
2.   
 Lift the fan duct off the heat sink fan. 
 
3.   
 Remove any adapter cards installed in the PCI connectors. See “Replacing a 
PCI adapter” on page 121. 
 
4.   
 Remove the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
 
5.   
 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 116. 
 
6.   
 Remove the hard disk drive. See “Replacing the hard disk drive” on page 140. 
 
7.   
 Remove the screws that secure the system board to the chassis. 
 
8.   
 Lift the system board out of the chassis. 
 
9.   
 Remove the memory modules from the failing system board and install them 
in the same location on the new system board. 
10. 
 
 Disconnect the heat sink and fan assembly cable from the system board. See 
“Identifying parts on the system board” on page 116. 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 125 
						

							11 .   
 Remove the four screws 
1 securing the heat sink and fan assembly to the 
system board. 
 
 
   
12. 
 
 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. 
13. 
 
 Lift the small handle 
3 and open the retainer 
1. 
 
 
 
 
126 Lenovo 3000 J Series 
						

							Important 
Touch only the sides of the microprocessor. Do not touch the gold 
contacts on the bottom.
14.   
 Lift the microprocessor 
2 straight up and out of the socket. 
 
 
 
Notes:   
a. 
 
 Note the orientation of the notches 
1 on the microprocessor. This is 
important when reinstalling the microprocessor on the new system board. 
 
 
   
b. 
 
 Do not drop anything onto the microprocessor socket while it is exposed. 
The socket pins must be kept as clean as possible.
15.
   
 On the new system board, release the lever securing the microprocessor 
retainer and then pivot the retainer until it is fully open.
Note:
   There will be a black plastic cover on the microprocessor retainer to 
protect the socket on the new system board. Remove the black plastic 
cover and place it on the microprocessor socket of the failing system 
board. 
16. 
 
 Holding the microprocessor with your fingers, position the microprocessor so 
that the notches on the microprocessor are aligned with the tabs in the 
microprocessor socket. 
 
 
Important 
To avoid damaging the microprocessor contacts, do not tilt the 
microprocessor when installing it into the socket.
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 127 
						

							17.   
 Lower the microprocessor straight down into the system board socket of the 
new system board. 
 
 
   
18. 
 
 Lower the microprocessor retainer. 
19. 
 
 Lock the retainer with the small handle to secure the microprocessor in the 
socket. 
20. 
 
 The new retention bracket has plastic one-way rings on the posts that insert 
into the rear of the new system board. Install the new retention bracket by 
aligning the posts on the module with the holes in the system board and 
pushing the posts through the holes until the retention bracket is secure. 
21. 
 
 Install the heat sink and fan assembly on the new system board. 
22. 
 
 Install the new system board into the chassis and align the screw holes with 
those in the chassis. Insert and tighten the screws that secure the system 
board. 
23. 
 
 Connect all cables to the system board. See “Identifying parts on the system 
board” on page 116. 
24. 
 
 Replace the hard disk drive. See “Replacing the hard disk drive” on page 140. 
25. 
 
 Install the drive bay assembly and connect the power and signal cables to the 
drives. 
26. 
 
 Reinstall any PCI adapter cards that were removed. See “Replacing a PCI 
adapter” on page 121. 
27. 
 
 Position the fan duct on the heat sink fan. 
28. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
128 Lenovo 3000 J Series 
						

							Replacing the system board (Types 7390, 7391, and 7392) 
 
1.   
 Remove the cover. See “Removing the cover” on page 114. 
 
2.   
 Lift the fan duct off the heat sink fan. 
 
3.   
 Remove any adapter cards installed in the PCI connectors. See “Replacing a 
PCI adapter” on page 121. 
 
4.   
 Remove the drive bay assembly. See “Removing and replacing the drive bay 
assembly” on page 118. 
 
5.   
 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 116. 
 
6.   
 Remove the hard disk drive. See “Replacing the hard disk drive” on page 140. 
 
7.   
 Remove the screws that secure the system board to the chassis. 
 
8.   
 Lift the system board out of the chassis. 
 
9.   
 Remove the retention module from the rear of the failing system board. 
10. 
 
 Remove the memory modules from the failing system board and install them 
in the same location on the new system board. 
11 . 
 
 Disconnect the heat sink and fan assembly cable from the system board. See 
“Identifying parts on the system board” on page 116. 
12. 
 
 Rotate handle 
1 to release the heat sink clamp and then disengage the 
clamp from the plastic retention bracket. 
 
 
   
13. 
 
 Lift the heat sink and fan assembly off the failing system board. 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 129 
						

							14.   
 Lift the small handle 
1. 
 
 
 
 
 
Important 
Touch only the sides of the microprocessor. Do not touch the gold 
contacts on the bottom.
15.   
 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 possible.
 
 
130 Lenovo 3000 J Series 
						

							16.   
 Holding the microprocessor with your fingers, position the microprocessor so 
that the small triangle
1 on one corner is aligned with the corresponding 
triangle on the socket. 
 
 
   
17. 
 
 Make sure that the small handle is in the raised position. 
18. 
 
 Lower the microprocessor straight down into the system board socket of the 
new system board. 
 
 
   
19. 
 
 Lower and latch the handle to secure the microprocessor in the socket. 
20. 
 
 Install the retention module that was removed from the rear of the failing 
system board on the new system board. 
21. 
 
 Install the heat sink and fan assembly on the new system board. 
22. 
 
 Install the new system board into the chassis and align the screw holes with 
those in the chassis. Insert and tighten the screws that secure the system 
board. 
23. 
 
 Connect all cables to the system board. See “Identifying parts on the system 
board” on page 116. 
24. 
 
 Replace the hard disk drive. See “Replacing the hard disk drive” on page 140. 
25. 
 
 Install the drive bay assembly and connect the power and signal cables to the 
drives. 
26. 
 
 Reinstall any PCI adapter cards that were removed. See “Replacing a PCI 
adapter” on page 121. 
27. 
 
 Position the fan duct on the heat sink fan. 
28. 
 
 Go to “Completing the FRU replacement” on page 144.
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 131 
						

							Replacing the microprocessor (Types 7396, 7397, and 7398) 
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.   
 Lay the computer on the right side to make the system board and 
microprocessor accessible. 
 
3.   
 Disconnect the heat sink and fan assembly cable from the system board. See 
“Identifying parts on the system board” on page 87. 
 
4.   
 Remove the four screws securing the heat sink and fan assembly to the system 
board. Notice that there is a retention bracket on the back side of the system 
board. 
 
 
   
 
5.   
 Lift the heat sink and fan assembly off the failing system board. 
 
132 Lenovo 3000 J Series 
						

							6.   
 Lift the small handle 
3 and open the retainer 
1. 
 
 
 
 
 
Important 
Touch only the sides of the microprocessor. Do not touch the gold 
contacts on the bottom.
 7.   
 Lift the microprocessor 
2 straight up and out of the socket. 
 
 
 
 
Chapter 9. Replacing FRUs (Types 7390, 7391, 7392, 7396, 7397, and 7398) 133 
						

							Notes:   
a. 
 
 Note the orientation of the notches 
1 on the microprocessor. This is 
important when reinstalling the microprocessor on the system board. 
 
 
   
b. 
 
 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 microprocessor retainer is fully open. 
 
9.   
 Holding the microprocessor with your fingers, remove the protective cover 

2 that protects the gold contacts on the new microprocessor 
1.
 
 
   
10. 
 
 Holding the microprocessor with your fingers, position the microprocessor so 
that the notches on the microprocessor are aligned with the tabs in the 
microprocessor socket. 
 
 
Important 
To avoid damaging the microprocessor contacts, do not tilt the 
microprocessor when installing it into the socket.
 
 
134 Lenovo 3000 J Series