Kyocera KM-C2520 Service Manual page 219

Problem
(15) 1. Poor contact in the con-
The size of paper on
the cassette or MP
tray is not displayed
correctly.
2. Defective paper length
(16) 1. A piece of paper torn
A paper jam in the
paper feed, paper
conveying fuser,
duplex or eject sec-
tion is indicated when
the main power
switch is turned on.
2. Defective feed switch 1/
(17) 1. Poor contact in the con-
The message
requesting cover to
be closed is dis-
played when the front
cover or left cover 1/2
2. Defective front cover
is closed.
(18) 1. Wiring is broken, shorted
Others.
Causes
nector terminals of paper
length size switch 1/2,
paper width size switch
1/2, MP paper length size
switch or MP paper width
size switch.
size switch 1/2, paper
width size switch 1/2, MP
paper length size switch
or MP paper width size
switch.
from copy paper is
caught around feed
switch 1/2/3, transfer
detection sensor, duplex
jam detection switch, jam
detection sensor, eject
switch or paper full sen-
sor.
2/3, transfer detection
sensor, duplex jam
detection switch, jam
detection sensor, eject
switch or paper full sen-
sor.
nector terminals of front
cover switch, left cover 1
switch or left cover 2
switch.
switch, left cover 1 switch
or left cover 2 switch.
or makes poor contact.
Check procedures/corrective measures
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 change when
the switch is turned on and off, replace the switch.
Paper length size switch 1: YC5-4 on the feed PWB
Paper width size switch 1: YC4-6, 7, 8 on the feed PWB
Paper length size switch 2: YC5-2 on the feed PWB
Paper width size switch 2: YC4-2, 3, 4 on the feed PWB
MP paper length size switch: YC24-A8 on the engine PWB
MP paper width size switch: YC24-A2, A3, A4 on the engine PWB
Check visually and remove it, if any.
Run maintenance item U031 and turn each switch on and off
manually. Replace the switch if indication of the corresponding
switch on the touch panel is not displayed in reverse.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across each switch. If there is no continuity
when the switch is on, replace it.
Check for continuity. If none, repair.
2FZ/2F0/2HC-5
1-4-59