Ricoh B121 - Bicu (Base-Engine Image Control Unit); Main Motor

OTHER REPLACEMENTS
B121 Series/B259 Series 3-46 SM
3.12.3 BICU (BASE-ENGINE IMAGE CONTROL UNIT)
1. Rear cover ( 3.3.1)
2. BICU [A] ( x 7, all connectors,
2 flat cables)
NOTE: When replacing the BICU, remove
the NVRAM [B] from the old BICU
and install it on the new BICU. The
NVRAM stores machine-specific
data.
3.12.4 MAIN MOTOR
1. Rear cover ( 3.3.1)
2. Main motor [A] ( x 4,  x 1)
B121R933.WMF
B121R503.WMF
[A]
[A]
[B]