Ricoh D255-17 - IOB; IOB (MP 501;601)

Electrical Components
SM 4-147 D255/D256/M281/M282
Replacement
and Adjustment
4.23.4 IOB
IOB (MP 501/601)
1. Remove the controller box. (page 4-128)
2. Remove the bracket [A]. (hook×2)
3. Remove the IOB [A].
4. Remove the NVRAM [A] from the old IOB and attach it to the new IOB.