Kyocera KM-2035 - No Image Appears (Entirely Black)

2HA/2HB
1-4-21
(1) No image appears (entirely white).
(2) No image appears (entirely black).
Copy example Causes Check procedures/corrective measures
No trans-
fer charg-
ing.
The connector terminals
of the high-voltage PWB
make poor contact.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Defective engine PWB. Replace the engine PWB and check for correct operation.
Defective high-voltage
PWB.
Replace the high voltage PWB and check for correct opera-
tion.
No LSU
laser is
output.
Defective laser scanner
unit.
Replace the laser scanner unit (see page 1-5-19).
Defective main PWB. Replace the main PWB and check for correct operation.
No devel-
oping bias
is output.
The connector terminals
of the high-voltage PWB
make poor contact.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Defective engine PWB. Replace the engine PWB and check for correct operation.
Defective high-voltage
PWB.
Replace the high voltage PWB and check for correct opera-
tion.
Copy example Causes Check procedures/corrective measures
No main
charging.
Broken main charger
wire.
Replace the main charger unit (see page 1-5-25).
Leaking main charger
housing.
Clean the main charger wire, grid and shield.
The connector terminals
of the high-voltage PWB
make poor contact.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Defective engine PWB. Check if YC9-5 on the engine PWB goes low when mainte-
nance item U100 is run. If not, replace the engine PWB.
Defective high-voltage
PWB.
Check if main charging takes place when YC1-12 on the
high-voltage PWB goes low while maintenance item U100 is
run. If not, replace the high-voltage PWB.
Exposure
lamp fails
to light.
The connector terminals
of the exposure lamp
make poor contact.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
Defective inverter PWB. Check if the exposure lamp lights when YC1-1 and 1-6 on
the inverter PWB go low while maintenance item U061 is run.
If not, replace the inverter PWB.
Defective engine PWB. Check if YC17-1 and YC17-6 on the engine PWB goes low
when maintenance item U061 is run. If not, replace the
engine PWB.