Kyocera ECOSYS FS-C5350DN, Service Manual

Page: 57 / 178

2K8
1-4-11
4204 Laser output error (Yellow)
The pin photo signal (PDN) is not output
from PD PWB Y for one second while
laser is emitted.
Defective harness
between APC
PWB Y and engine
PWB (YC29), or
improper connec-
tor insertion. Reinsert the connector. Also check for conti-
nuity within the connector harness. If none,
remedy or replace the harness.
Defective APC
PWB Y. Replace the laser scanner unit YK (See
page 1-5-37).
Defective PD PWB
Y. Replace the laser scanner unit YK (See
page 1-5-37).
Defective engine
PWB. Replace the engine PWB (See page 1-5-
29).
4600 LSU cleaning motor error
When the LSU cleaning motor is driven,
the LSU cleaning motor over-current
detection signal is detected continu-
ously for 50 times (5 s) at 100 ms inter-
vals.
Defective harness
between LSU
cleaning motor and
engine PWB
(YC37), or
improper connec-
tor insertion. Reinsert the connector. Also check for conti-
nuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission sys-
tem of the LSU
cleaning motor. Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective LSU
cleaning motor. Replace the LSU cleaning motor.
Defective engine
PWB. Replace the engine PWB (See page 1-5-
29).
4700 VIDEO ASIC device error Faulty connection
of the connector
between the main
PWB and engine
PWB. Check the installation of the main PWB and
engine PWB and reinstall them if necessary
(See page 1-5-28 and 1-5-29).
Defective main
PWB. Replace the main PWB (See page 1-5-28).
Defective engine
PWB. Replace the engine PWB (See page 1-5-
29).
Code Contents
Remarks
Causes Check procedures/corrective measures