2K5
1-4-35
(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.
Check if YC12-11 on the engine PWB goes low when main-
tenance item U101 is run. If not, replace the engine PWB.
Defective high voltage
PWB.
Check if transfer charging takes place when CN1-2 on the
high voltage PWB goes low while maintenance item U101 is
run. If not, replace the high voltage PWB.
No LSU
laser is
output.
Defective laser scanner
unit.
Replace the laser scanner unit (see page 1-5-26).
Defective main PWB.
Check if YC21-3 on the main PWB goes low when mainte-
nance item U100 is run. If not, replace the main 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 engine PWB.
Check if YC12-2 on the engine PWB goes low when mainte-
nance item U101 is run. If not, replace the engine PWB.
Defective high voltage
PWB.
Check if developing bias is output when CN1-11 on the high
voltage PWB goes low while maintenance item U101 is run.
If not, replace the high voltage PWB.
Copy example
Causes
Check procedures/corrective measures
No main
charging.
Broken main charger
wire.
Replace the main charger unit (see page 1-5-33).
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 engine PWB.
Check if YC12-5 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 CN1-8 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.
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 CN1-1 and CN1-6 on
the inverter PWB goes low while maintenance item U061 is
run. If not, replace the inverter PWB.
Defective scanner PWB.
Check if YC5-1 and YC5-6 on the scanner PWB goes low
when maintenance item U061 is run. If not, replace the scan-
ner PWB.
Содержание TASKALFA 300I
Страница 1: ...SERVICE MANUAL Published in February 2010 842K5111 2K5SM061 Rev 1 TASKalfa 300i ...
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Страница 14: ...2K5 This page is intentionally left blank ...
Страница 22: ...2K5 1 1 8 This page is intentionally left blank ...
Страница 196: ...2K5 1 4 52 This page is intentionally left blank ...
Страница 252: ...2K5 1 5 56 This page is intentionally left blank ...
Страница 274: ...2K5 2 1 20 This page is intentionally left blank ...
Страница 280: ...2K5 2 2 6 16 Operation fan motor OFM Cools the operation section 17 Eject fan motor EFM Cools the eject section ...
Страница 310: ...2K5 2 3 28 This page is intentionally left blank ...
Страница 347: ...INSTALLATION GUIDE FOR PAPER FEEDER ...
Страница 369: ...INSTALLATION GUIDE FOR BUILT IN FINISHER ...
Страница 381: ...INSTALLATION GUIDE FOR JOB SEPARATOR ...
Страница 391: ...INSTALLATION GUIDE FOR FAX System ...
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