Kyocera Mita KM-2530 Service Manual page 210

2DF
Problem
(34) Defective main PCB.
No developing bias
Defective high-voltage
is output.
transformer PCB.
(35) Defective original detec-
The original size is tion switch.
not detected.
(36) Original is not placed cor-
The original size is rectly.
not detected cor-
Poor contact in the original
rectly.
size detection sensor con-
nector terminals.
Defective original size de-
tection sensor.
(37) Poor contact in the touch
The touch panel panel connector terminals.
keys do not work.
Defective touch panel or
operation unit PCB.
(38) Poor contact in the upper
The message re- paper switch connector
questing paper to be terminals.
loaded is shown
Defective upper paper
when paper is
switch.
present in the upper
drawer.
(39) Poor contact in the lower
The message re- paper switch connector
questing paper to be terminals.
loaded is shown
Defective lower paper
when paper is
switch.
present in the lower
drawer.
(40) Poor contact in the bypass
The message re- paper switch connector
questing paper to be terminals.
loaded is shown
Defective bypass paper
when paper is
switch.
present on the by-
pass tray.
(41) Poor contact in the upper
The size of paper in paper length switch con-
the upper drawer is nector terminals.
not displayed cor-
Defective upper paper
rectly.
length switch.
Poor contact in the upper
paper width switch con-
nector terminals.
Defective upper paper
width switch.
1-5-56
Causes
See page 1-5-43.
If the level of CN5-2 on the scanner drive PCB does not change
when the original detection switch is turned on and off, replace
the original detection switch.
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.
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 the touch panel has been initial-
ized, replace the touch panel or operation unit PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if CN13-B12 on the main PCB goes low when the upper
paper switch is turned on with 5 V DC present at CN13-B13 on
the main PCB. If not, replace the upper paper switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if CN13-B18 on the main PCB goes low when the upper
paper switch is turned on with 5 V DC present at CN13-B19 on
the main PCB. If not, replace the lower paper switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if CN6-A6 on the main PCB goes low when the bypass
paper switch is turned on with 5 V DC present at CN6-A5 on the
main PCB. If not, replace the bypass paper switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if CN13-B2 on the main PCB 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 CN12-3, CN12-4 and CN12-5 on the main
PCB change alternately when the width guide in the upper
drawer is moved. If not, replace the upper paper width switch.
Check procedures/corrective measures