Ricoh C231 - Page 393

Trouble-
shooting
ELECTRICAL COMPONENT DEFECTS
SM 4-5 C231/C237/C238
4.2.3 LINES
Component Condition Symptom
+5v (CN102-4) Wire (or PSU)
broken
The machine does not turn on.
+5v (CN102-2, 3) The machine does not turn on, but LED104 on
the MPU blinks.
+12v (CN102-9) The thermal head does not burn the master.
-12v (CN102-8) The thermal head does not burn the master.
+24v (CN111-3, 4, 5) E-13 is displayed, and the output mode in SP
mode does not turn anything on except the
main motor.
+24v (CN111-1) E-13 is displayed, and SP5-14, 15 (pressure
plate motor output mode) does not turn the
motor on.