Ricoh C231 Service Manual page 355

3.2.4 PSU
Upper left cover ( 3.2.2)
Master eject unit ( 3.4.1)
[A]: PSU ( x 5,  x 2, 2 clamps)
CAUTION: When the PSU is replaced, the thermal head voltage returns to the
default. Adjust the thermal head voltage ( 3.5.3) after installing the
new board.
SM
[A]
3-3
COVERS / BOARDS
C238R009.WMF
C231/C237/C238