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2KL/2KK
Problem
(10)
Transfer charging is
not performed.
(11)
The original size is
not detected cor-
rectly.
(12)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette or MP tray.
(13)
The size of paper on
the cassette or MP
tray is not displayed
correctly.
(14)
A paper jam in the
paper feed, paper
conveying, eject or
duplex section is indi-
cated when the main
power switch is
turned on.
1-4-30
Causes
1. The connector terminals
of the high voltage PWB
make poor contact.
2. Defective high voltage
PWB.
3. Defective main/engine
PWB.
1. Original is not placed cor-
rectly.
2. Poor contact in the origi-
nal detection switch or
original size detection
sensor connector termi-
nals.
3. Defective original detec-
tion switch.
4. Defective original size
detection sensor.
1. Poor contact in the con-
nector terminals of paper
switch or MP paper
switch.
2. Defective paper switch or
MP paper switch.
1. Poor contact in the con-
nector terminals of paper
size length switch or MP
paper size width switch.
2. Defective paper size
length switch or MP
paper size width switch.
1. A piece of paper torn
from copy paper is
caught around registra-
tion switch, eject switch
or duplex paper convey-
ing switch.
2. Defective switch.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
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.
Check if YC8-4 on the main/engine PWB goes low when mainte-
nance item U101 is run. If not, replace the main/engine PWB.
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.
If the level of YC5-B8 on the main/engine PWB does not go low
when the original detection switch is turned on and off, replace the
original detection switch.
Check if sensor operates correctly. If not, replace it.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
If the level of following terminal on PWB does not go low when the
switch is turned on and off, replace the switch.
Paper switch: YC2-2 on the cassette PWB
MP paper switch: YC5-12 on the cassette PWB
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
If the level of following terminal on PWB does not go low when the
switch is turned on and off, replace the switch.
Paper size length switch: YC9-B3, B4, B6 on the main/engine
PWB
MP paper size width switch: YC5-2 on the cassette PWB
Check visually and remove it, if any.
Run maintenance item U031 and turn switch on and off manually.
Replace the switch if indication of the corresponding switch is not
light.
Registration switch, eject switch, duplex paper conveying switch
Service Manual
Y110980-1
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