Kyocera TASKalfa 400ci - No Image Appears (Entirely White); No Image Appears (Entirely Black)

2JZ/2JX/2JV/2H7
1-4-61
(1) No image appears (entirely white).
(2) No image appears (entirely black).
Copy example Causes Check procedures/corrective measures
Defective
transfer
bias output.
The connector terminals
of the transfer high volt-
age PWB 1 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.
Defective transfer high
voltage PWB 1.
Replace the transfer high voltage PWB 1.
Defective transfer belt
unit.
Replace the transfer belt unit (see page 1-5-37).
No LSU
laser is out-
put.
Defective laser scanner
unit.
Replace the laser scanner unit (see page 1-5-21).
Defective engine PWB. Replace the engine PWB.
Defective
developing
bias output.
The connector terminals
of the main high voltage
PWB make poor contact.
Reinsert the connector. Also check for continuity within the
connector cable. If none, remedy or replace the cable.
The connector terminals
of the high voltage con-
trol PWB make poor con-
tact.
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.
Defective high voltage
control PWB.
Replace the high voltage control PWB.
Defective main high volt-
age PWB.
Replace the main high voltage PWB.
Copy example Causes Check procedures/corrective measures
No main
charging.
Defective drum unit. Replace the drum unit (see page 1-5-35).
The connector terminals
of the main 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.
Defective main high volt-
age PWB.
Replace the main high voltage PWB.
Exposure
lamp fails to
light.
Poor contact in the expo-
sure lamp connector ter-
minals.
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 the terminal on the
inverter PWB goes low while maintenance item U061 is
run. If not, replace the inverter PWB.
Defective ISM PWB. Run maintenance item U061 and check if YC5-4 on the ISM
PWB goes low. If not, replace the ISM PWB.
The laser is
activated
simulta-
neously for
all colors.
Defective laser scanner
unit.
Replace the laser scanner unit (see page 1-5-21).