Others - Ricoh A109 Service Manual

14. OTHERS

14.1 MAIN CONTROL BOARD REPLACEMENT
[B]
[A]
CAUTION: The RAM board on the main control board has a
lithium battery which can explode if replaced
incorrectly. Replace the battery only with an identical
one. The manufacturer recommends replacing the
entire RAM board. Do not recharge or burn this
battery. Used batteries must be handled in
accordance with local regulations.
1. Turn off the main switch and unplug the machine.
2. Remove the upper rear cover (4 screws).
3. Remove the RAM board [A].
4. Disconnect all the connectors from the main control board [B].
5. Replace the main control board [B] (5 locking supports).
6. Install the RAM board [A] on the new main control board.
7. Reinstall the upper rear cover and turn on the main switch.
8. Check the machine operation and copy quality.
FSM 5-107 A109