Kyocera TASKalfa 300i Service Manual page 188

2K5
Problem
(13)
The original size is
not detected cor-
rectly.
(14)
The touch panel keys
do not work.
(15)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 1/2 or MP tray.
(16)
The size of paper on
the cassette 1/2 or
MP tray is not dis-
played correctly.
1-4-44
Causes
1. Original is not placed cor-
rectly.
2. Poor contact in the origi-
nal detection switch or
original size sensor con-
nector terminals.
3. Defective original detec-
tion switch.
4. Defective original size
sensor.
1. Poor contact in the touch
panel connector termi-
nals.
2. Defective touch panel or
main operation PWB.
1. Poor contact in the con-
nector terminals of paper
switch 1/2 or MP paper
switch.
2. Defective paper switch 1/
2 or MP paper switch.
1. Poor contact in the con-
nector terminals of paper
size length switch 1/2,
paper size width switch
1/2, MP paper size length
switch or MP paper size
width switch.
2. Defective paper size
length switch 1/2 or MP
paper size length switch.
3. Defective paper size
width switch 1/2 or MP
paper size width switch.
Check procedures/corrective measures
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 YC17-5 on the engine PWB does not go low when
the original detection switch is turned on and off, replace the origi-
nal 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 any keys do not work after running the maintenance item U201
to initialize the touch panel, replace the touch panel or main oper-
ation unit 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 switch 1: YC23-B12 on the engine PWB
Paper switch 2: YC23-A5 on the engine PWB
MP paper switch: YC7-6 on the engine 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 1: YC23-B2 on the engine PWB
Paper size length switch 2: YC23-A12 on the engine PWB
MP paper size length switch: YC7-13 on the engine PWB
If the level of following terminal on PWB does not change when
the width guide in the cassette 1/2 or insert guide on the MP tray
is moved, replace the switch.
Paper size width switch 1: YC22-5, 7, 11 on the engine PWB
Paper size width switch 2: YC22-6, 8, 12 on the engine PWB
MP paper size width switch: YC7-1, 2, 3 on the engine PWB