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Service Guide OL830
Chapter 3 Maintenance & Disassembly
3.2.05 Main Controller Board (APSM)
1. Remove the upper cover.
(See 3.2.01){
}
2. Remove the interface board (APSR) if installed.
(See 3.2.02){
}
3. Remove the RAM board (REXM) if installed
. (See 3.2.03){
}
4. Remove the emulation board (APSH)
(See 3.2.04){
}
5. Remove the four screws (1) and remove shield plate B (2).
6. Remove the four screws (3),
7. Lift the main controller board, disengaging it from the connector (4).
P/N 55057901 Main Controller without ROM (APSM)
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