Kyocera Mita DC-1560, Service Manual

Page: 273 / 289

1AF
3-6-35
(19)
Separation
charging does
not take
place.
(20)
No develop-
ing bias is
output.
(21)
PF is dis-
played while
paper is
present in the
paper drawer.
Broken separation
charger wire.
Poor contact in the
high-voltage trans-
former PCB con-
nector terminals.
Defective high-
voltage trans-
former PCB.
Defective main
PCB.
Poor contact in the
developing bias
wire.
Poor contact in the
high-voltage trans-
former PCB con-
nector terminals.
Defective high-
voltage trans-
former PCB.
Defective main
PCB.
Poor contact in the
drawer switch con-
nector terminals.
Defective drawer
switch.
Check visually and replace the separation
charger wire if it is broken (see page 3-3-49).
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 31 and if separation charging
does not take place while CN1-5 on the
high-voltage transformer PCB goes low, re-
place the high-voltage transformer PCB.
Run simulation 31 and check if CN1-23 on
the main PCB goes low. If not, replace the
main PCB.
Check the developing bias wire for poor con-
tact.
Check for continuity across the connector
terminals. If none, replace them.
Run simulation 10. If no developing bias is
output while CN1-8 on the high-voltage
transformer PCB goes low, replace the high-
voltage transformer PCB.
Run simulation 10 and check if CN1-20 on
the main PCB goes low. If not, replace the
main PCB.
Check for continuity across the connector
terminals. If none, replace them.
Check for continuity. If none when the
drawer switch is turned on, replace the
switch.
Problem Causes Check procedures/corrective measures