IBM 8183 - ThinkCentre S50 User Manual page 49

8. Disconnect all other cables connected to the system board.
1
Microprocessor heat sink
2
Fan connectors (2)
3
DIMM connectors (2)
4
SATA 1 IDE and SATA 2 IDE hard
disk drive connectors (2)
5
PCI riser connector
6
Speaker connector
7
POV connector
9. Using the two blue handles provided, lift the system board assembly out of
the computer.
Note: You will have to tilt the system board assembly and move it around the
edge of the power supply assembly to remove it from the computer.
10. Take note of the location of the memory DIMMs and remove them from the
system board. See "Installing memory" on page 14.
11. Install the DIMMs on the new system board in the same location as they were
on the system board being replaced.
12. Install the new system board assembly into the computer chassis by aligning
the two tabs on the rear of the system board assembly with the slots in the
rear of the computer chassis. Slide the system board assembly to the rear until
the front edge of the system board assembly fits behind the flange in the front
and is seated flush to the bottom of the chassis.
13. Reconnect all cables that were disconnected from the system board. Make sure
all cables are routed correctly.
14. Install the microprocessor on the new system board. See "Replacing the
microprocessor" on page 38. Return here after replacing the microprocessor.
15. Lower the drive bay assembly into the normal position.
16. Go to "Completing the installation" on page 44.
8
Diskette drive connector
9
Front panel connector
10
Power connector (P1)
11
PATA Primary IDE connector (hard disk
drive and CD-ROM drive)
12
Power connector (P2)
13
Microprocessor heat sink clamps
14
CD audio connector
Appendix A. Replacing customer replaceable units (CRU)
35