Main Board; When Installing The New Main Board - Ricoh M156 Service Manual

4.11.2 MAIN BOARD

1. Left cover (page 4-3 "Left Cover")
2. Main board [A] ( x 4,flat cable x 2, all

Do not connect any connectors to JRS1 and JRS2 when reinstalling the main board
[A]. JRS1 and JRS2 are only used at the factory.

Do not change the dip switch. The dip switch is only for factory use.
3. EEPROM [A]

When installing the new main board

1. Remove the EEPROM from the old main board.
2. Install it on the new main board after replacing the main board.
3. Replace the EEPROM if the EEPROM on the old main board is defective.
SM
s)
4-47
Electrical Components
M156/M157/M176/M177