Error Code 4200 [E3] (Laser Output Error) - Kyocera Mita FS-6020 Service Manual

(1-3) Error code 4200 [E3] (laser output error)

Detection conditions
• The pin photo signal (PDN) is not output within a specified time after the polygon motor ready signal (MOTRDYN)
becomes ready (L level).
Corrective measures
between the main PWB and the PD
PWB or improper connection at the
Turn on the printer, connect a tester
or an oscilloscope, and measure as
follows.
main PWB 5 V DC in the printer
Pin No. 6 of the YC10 connector
Replace the laser scanner
unit. (See page 1-6-15.)
* Possible defective locations
Start
(causes)
• Main PWB
• Laser scanner unit
Is there any damage
to the harness (S02820)
YC11 connector on the main
PWB?
Yes
Is the voltage at
the following pins of the
standby mode?
Pin No. 1 of the YC11
connector
Yes
No
OK?
Yes
Replace the laser scanner unit
and the main PWB at the same
time. (See pages 1-6-15 and
25.) If the error is not cleared,
replace the engine/high voltage
PWB. (See page 1-6-26.)
End
No
If any problem is found on the
harness or the connector,
repair or replace it.
No
OK?
Yes
Replace the laser scanner
unit. (See page 1-6-15.)
End
No
Replace the main PWB. (See
page 1-6-25.)
No
OK?
Yes
Replace the laser scanner
unit. (See page 1-6-15.)
End
FS-6020
1-5-5