The Cleaning Lamp Does Not Turn On; The Exposure Lamp Does Not Turn On - Kyocera Mita KM-4230 Service Manual

2A3/4
Problem
(24) Broken eject
The eject speed switching
speed clutch coil.
switching
Poor contact in the
clutch does
eject speed
not operate.
switching clutch
connector
terminals.
Defective engine
PCB.
Broken bypass
(25)
solenoid coil.
The bypass
solenoid does
Poor contact in the
not operate.
bypass solenoid
connector termi-
nals.
Defective engine
PCB.
(26) Poor contact in the
The cleaning cleaning lamp con-
lamp does not nector terminals.
turn on.
Defective cleaning
lamp.
Defective engine
PCB.
(27)
Poor contact in the
The exposure
exposure lamp
lamp does not
connector
turn on.
terminals.
Defective inverter
PCB.
Defective scanner
motor PCB.
3-6-80
Causes Check procedures/corrective measures
Check for continuity across the coil. If none,
replace the eject speed switching clutch.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U032 and check if
CN3-A11 on the engine PCB goes low. If
not, replace the engine PCB.
Check for continuity across the coil. If none,
replace the bypass solenoid.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Run maintenance item U033 and check if
CN14-A8 on the engine PCB goes low. If
not, replace the engine PCB.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
Check for one-way continuity across each
LED comprising the cleaning lamp. If none,
replace the cleaning lamp.
If the cleaning lamp turns on when CN2-A2
on the engine PCB is held low, replace the
engine PCB.
Reinsert the connector. Also check for
continuity within the connector cable. If
none, remedy or replace the cable.
If the exposure lamp does not turn on when
CN1-5 and CN1-6 on the inverter PCB are
held low, replace the inverter PCB.
If the exposure lamp turns on when CN3-1
and 3-2 on the scanner motor PCB are held
low, replace the scanner motor PCB.