Kyocera TASKALFA 300I, Service Manual

Page: 188 / 408

2K5
1-4-44
(13)
The original size is
not detected cor-
rectly. 1. Original is not placed cor-
rectly.
Check the original and correct if necessary.
2. Poor contact in the origi-
nal detection switch or
original size sensor con-
nector terminals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
3. Defective original detec-
tion switch.
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.
4. Defective original size
sensor.
Check if sensor operates correctly. If not, replace it.
(14)
The touch panel keys
do not work. 1. Poor contact in the touch
panel connector termi-
nals.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Defective touch panel or
main operation PWB.
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.
(15)
The message
requesting paper to
be loaded is shown
when paper is
present on the cas-
sette 1/2 or MP tray. 1. Poor contact in the con-
nector terminals of paper
switch 1/2 or MP paper
switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Defective paper switch 1/
2 or MP paper switch.
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
(16)
The size of paper on
the cassette 1/2 or
MP tray is not dis-
played correctly. 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.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
2. Defective paper size
length switch 1/2 or MP
paper size length switch.
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
3. Defective paper size
width switch 1/2 or MP
paper size width switch.
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
Problem Causes Check procedures/corrective measures