Kyocera FS-9120DN Service Manual page 110

FS-9120DN/9520DN
Problem
(32)
The message re-
questing paper to be
loaded is shown
when paper is
present on the MP
tray.
(33)
The size of paper in
the upper cassette
is not displayed cor-
rectly.
(34)
The size of paper in
the lower cassette is
not displayed cor-
rectly.
(35)
The printing width of
the paper on the MP
tray is not detected
correctly.
1-5-40
Causes
Poor contact in the MP
paper switch connector
terminals.
Defective MP paper
switch.
Poor contact in the upper
paper length switch con-
nector terminals.
Defective upper paper
length switch.
Poor contact in the upper
paper width switch con-
nector terminals.
Defective upper paper
width switch.
Poor contact in the lower
paper length switch con-
nector terminals.
Defective lower paper
length switch.
Poor contact in the lower
paper width switch con-
nector terminals.
Defective lower paper
width switch.
Poor contact in the MP
paper length switch con-
nector terminals.
Defective MP paper length
switch.
Poor contact in the MP
paper width switch con-
nector terminals.
Defective MP paper width
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 YC6-A6 on the engine controller PWB goes low when
the MP paper switch is turned on with 5 V DC present at YC6-A5
on the engine controller PWB. If not, replace the MP paper
switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if YC13-B2 on the engine controller PWB goes low when
the upper paper length switch is turned on. If not, replace the
upper paper length switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the levels of YC12-3, YC12-4 and YC12-5 on the en-
gine controller PWB change alternately when the width guide in
the upper cassette is moved. If not, replace the upper paper
width switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if YC13-A19 on the engine controller PWB goes low
when the lower paper length switch is turned on. If not, replace
the lower paper length switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the levels of YC12-9, YC12-10 and YC12-11 on the en-
gine controller PWB change alternately when the width guide in
the lower cassette is moved. If not, replace the lower paper
width switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if YC6-B11 on the engine controller PWB goes low when
the MP paper length switch is turned on. If not, replace the MP
paper length switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the levels of YC6-A1, YC6-A2 and YC6-A3 on the en-
gine controller PWB change alternately when the insert guide on
the MP table is moved. If not, replace the MP paper width
switch.