2KL/2KK
1-4-22
(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 high voltage
PWB.
Check if transfer charging takes place when CN1-4 on the
high voltage PWB goes low while maintenance item U101 is
run. If not, replace the high voltage PWB.
Defective main/engine
PWB.
Check if YC8-4 on the main/engine PWB goes low when
maintenance item U101 is run. If not, replace the engine
PWB.
No LSU
laser is
output.
Defective laser scanner
unit.
Replace the laser scanner unit (see page 1-5-28).
Defective main/engine
PWB.
Check if YC35-5 on the main/engine PWB goes low when
maintenance item U100 is run. If not, replace the main/
engine PWB.
No devel-
oping bias
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 high voltage
PWB.
Check if developing bias is output when CN1-9 on the high
voltage PWB goes low while maintenance item U101 is run.
If not, replace the high voltage PWB.
Defective engine PWB.
Check if YC8-9 on the engine PWB goes low when mainte-
nance item U101 is run. If not, replace the engine PWB.
Copy example
Causes
Check procedures/corrective measures
No main
charging.
Broken main charger
wire.
Replace the main charger unit (see page 1-5-36).
Leaking main charger
housing.
Clean the main charger wire and grid.
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 high voltage
PWB.
Check if main charging takes place when CN1-7 on the high
voltage PWB goes low while maintenance item U100 is run.
If not, replace the high voltage PWB.
Defective main/engine
PWB.
Check if YC8-7 on the main/engine PWB goes low when
maintenance item U100 is run. If not, replace the main/
engine 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 YC1-3 on the
inverter PWB goes low while maintenance item U061 is run.
If not, replace the inverter PWB.
Defective main/engine
PWB.
Check if YC16-4 on the main/engine PWB goes low when
maintenance item U061 is run. If not, replace the main/
engine PWB.
Service Manual Y110980-1
Summary of Contents for d-Copia 1800
Page 1: ...d Copia 1800 d Copia 2200 Digital Copier SERVICE MANUAL Code Y110980 1...
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Page 271: ...INSTALLATION GUIDE FOR PAPER FEEDER...
Page 285: ...INSTALLATION GUIDE FOR DUPLEX UNIT...
Page 294: ...INSTALLATION GUIDE FOR Printing System Z...
Page 297: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 09 2009 1ST EDITION 297 Y110980 1...