IBM 3112 Service Manual page 108

5. Remove the 4 nuts (N), 1 standoff(ST), and the screw/lock
washer.
Note: Note: In the following step, the Engine Board to RIP
board connector will be damaged if the assembly is not pulled
straight out of the printer.
6. Remove the inner EMC shield and RIP board straight out from
the printer as an assembly. (You need to pull hard, but carefully)
7. If the RIP board is being replaced, remove the ROM SIMM and
all options for installation on the new board.
8. Remove the 4 nuts (N) and the standoff (ST) to separate the RIP
board from the inner EMC shield.
9. If you are here to remove the Engine board:
•
Disconnect the engine cable connections.
•
Remove the nut and the three threaded standoffs (the longer
standoff is in the center).
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Service Manual