Lenovo 3000 J Series Manual

							10.   
 Lift the small handle 
3 and open the retainer 
1. 
 
 
   
11 . 
 
 Lift the microprocessor 
2 straight up and out of the system board socket.
 
 
 
Notes:   
a. 
 
 Your microprocessor and socket might look different than the one 
illustrated. 
b. 
 
 Note the orientation of the notches on the microprocessor. This is 
important when reinstalling the microprocessor on the new system board. 
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.
12.
   
 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 
 
Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 95 
						

							cover and place it on the microprocessor socket of the failing system 
board when you complete this procedure. 
13.   
 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 on the new system board. 
 
 
Important 
To avoid damaging the microprocessor contacts, do not tilt the 
microprocessor when installing it into the socket.
14.   
 Lower the microprocessor straight down into the system board socket of the 
new system board. 
 
 
   
15. 
 
 Lower the microprocessor retainer. 
16. 
 
 Lock the retainer with the small handle to secure the microprocessor in the 
socket. 
17. 
 
 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. 
18. 
 
 Install the heat sink and fan assembly on the new system board. 
19. 
 
 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. 
20. 
 
 Connect all the cables to the system board. See “Identifying parts on the 
system board” on page 87. 
21. 
 
 Go to “Completing the FRU replacement” on page 112.
 
 
96 Lenovo 3000 J Series 
						

							Replacing the system board (Types 7387, 7388, and 7389) 
 
1.   
 Remove only the left-side cover. See “Removing the covers” on page 84. 
 
2.   
 Lay the computer on the right side to make the system board accessible. 
 
3.   
 Remove any adapter cards installed in the PCI connectors. See “Replacing a 
PCI adapter” on page 91. 
 
4.   
 Carefully 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 87. 
 
5.   
 Remove the screws that secure the system board to the chassis. 
 
6.   
 Lift the system board out of the chassis. 
 
7.   
 Remove the retention module from the rear of the failing system board. 
 
8.   
 Remove the memory modules from the failing system board and install them 
in the same location on the new system board. 
 
9.   
 Rotate handle 
1 to release the heat sink clamp and then disengage the 
clamp from the heat sink and fan assembly.
 
 
   
10. 
 
 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. 
 
Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 97 
						

							11 .   
 Lift the small handle 
1. 
 
 
   
12. 
 
 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.
 
 
98 Lenovo 3000 J Series 
						

							13.   
 Holding the microprocessor with your fingers, position the microprocessor so 
that the small triangle 
1 is aligned with the corresponding triangle on the 
socket. 
 
 
   
14. 
 
 Lower the microprocessor straight down into the socket.
 
 
   
15. 
 
 Lower and latch the handle to secure the microprocessor in the socket. 
16. 
 
 Install the retention module that was removed from the rear of the failing 
system board on the new system board. 
17. 
 
 Install the heat sink and fan assembly on the system board. 
18. 
 
 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. 
19. 
 
 Connect all the cables to the system board. See “Identifying parts on the 
system board” on page 87. 
20. 
 
 Go to “Completing the FRU replacement” on page 112.
 
 
Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 99 
						

							Replacing the microprocessor (Types 7393, 7394, and 7395) 
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 left-side cover. See “Removing the covers” on page 84. 
 
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 
1 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. Lay the heat 
sink on its side so that the thermal grease does not touch anything. 
 
100 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 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 101 
						

							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.
 8. 
 
 Holding the microprocessor with your fingers, remove the protective cover 

2 that protects the gold contacts on the new microprocessor 
1 .
 
 
   
 
9.   
 Make sure that the microprocessor retainer is fully open. 
10. 
 
 Lower the microprocessor straight down into the socket.
 
 
   
11 . 
 
 Lock the retainer with the small handle to secure the microprocessor in the 
socket. 
 
102 Lenovo 3000 J Series 
						

							12.   
 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).
 
 
   
13. 
 
 Install the heat sink and fan assembly on the system board. 
14. 
 
 Connect the heat sink and fan assembly cable to the system board. See 
“Identifying parts on the system board” on page 87. 
15. 
 
 Go to “Completing the FRU replacement” on page 112.
 
 
Chapter 8. Replacing FRUs (Types 7387, 7388, 7389, 7393, 7394, and 7395) 103 
						

							Replacing the microprocessor (Types 7387, 7388, and 7389) 
 
1.   
 Remove the left-side cover. See “Removing the covers” on page 84. 
 
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.   
 
 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 failing system board. Lay the heat 
sink on its side so that the thermal grease does not touch anything. 
 
6.   
 Lift the small handle 
1. 
 
 
   
 
104 Lenovo 3000 J Series