Kyocera Mita KM-4530 Service Manual page 196

Problem
(50) Broken transfer charger
Transfer charging is wire.
not performed
Poor contact in the high
(C5110).
voltage transformer PCB
connector terminals.
Defective engine PCB.
Defective high voltage
transformer PCB.
(51) Broken separation charger
Separation charging wire.
is not performed
Poor contact in the high
(C5110).
voltage transformer PCB
connector terminals.
(52) Poor contact in the devel-
No developing bias oping bias wire.
is output.
Poor contact in the high
voltage transformer PCB
connector terminals.
Defective high voltage
transformer PCB.
Defective engine PCB.
(53) Defective original detec-
The original size is tion switch.
not detected.
(54) Original is not placed cor-
The original size is rectly.
not detected
Poor contact in the original
correctly.
size detection sensors
connector terminals.
Defective original size de-
tection sensor or the scan-
ner drive PCB.
(55) Poor contact in the touch
The touch panel panel connector terminals.
keys do not work.
Defective touch panel or
operation unit PCB.
Causes
See page 1-5-33.
Replace the separation charger wire (see page 1-6-48).
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check the developing bias wire. If there is any problem, replace
it.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the developing bias is output when CN1-9 on the high
voltage transformer PCB goes low while maintenance item U030
is run. If not, replace the high voltage transformer PCB.
Check if CN12-9 on the engine PCB goes low during copying. If
not, replace the engine PCB.
If the level of CN5-2 on the scanner drive PCB does not change
when the original detection switch is turned on and off, replace
the original detection switch.
Check the original and correct if necessary.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if sensor operates correctly. If not, replace it or, if neces-
sary, the scanner drive PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
If any keys do not work after the touch panel has been initial-
ized, replace the touch panel or operation unit main PCB.
Check procedures/corrective measures
2BC/D
1-5-49