Kyocera KM-2550, Service Manual

Page: 167 / 282

2FT
1-5-37
(20)
Main charging is not-
performed. Broken main charger wire. See page 1-5-27.
Leaking main charger hous-
ing.
Poor contact in the high
voltage PCB connector ter-
minals.
Defective engine PCB.
Defective high- voltage
PCB.
(21)
Transfer charging is
not performed. Poor contact in the high
voltage PCB connector ter-
minals. See page 1-5-27.
Defective engine PCB.
Defective high-voltage
PCB.
(22)
No developing bias is
output. Poor contact in the high
voltage PCB connector ter-
minals. See page 1-5-27.
Defective engine PCB.
Defective high-voltage
PCB.
(23)
The original size is
not detected. Defective original detection
switch. If the level of YC18-5 on the engine PCB does not change when
the original detection switch is turned on and off, replace the origi-
nal detection switch.
(24)
The original size is
not detected cor-
rectly. Original is not placed cor-
rectly. Check the original and correct if necessary.
Poor contact in the original
size detection sensor con-
nector terminals. Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective original size
detection sensor. Check if sensor operates correctly. If not, replace it.
(25)
The message
requesting paper to
be loaded is shown
when paper is
present in the drawer
1. Poor contact in the paper
switch connector terminals. Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective paper switch. If the level of YC8-2 on the engine PCB does not change when
the paper switch is turned on and off, replace the paper switch.
(26)
The message
requesting paper to
be loaded is shown
when paper is
present in the drawer
2. Poor contact in the drawer
paper switch connector ter-
minals. Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Defective drawer paper
switch. If the level of YC5-2 on the drawer main PCB does not change
when the drawer paper switch is turned on and off, replace the
drawer paper switch.
Problem Causes Check procedures/corrective measures