5300 - Eraser Lamp Error - Kyocera FS-1900 Service Manual

(12) 5300 - Eraser lamp error

Meaning
The ERADEAD*
signal (delivered from
the eraser lamp
blown-out detection
circuit on the engine
board) goes low
continuously more
than 1 second, while
eraser lamp is on.
Call service
5300:0123456
Turn power switch off.
Remove and check
harness (S02407)
between engine board
(KP-864) and sensor
board (KP-754).
No
OK?
Yes
Remove and check
harness (S02412)
between drum board
(KP-748) and eraser
lamp [board KP762].
No
OK?
Yes
Check deformation pins
of connector YC702 on
sensor board.
Yes
Deformed ?
No
Turn power switch on
and print starus page.
Suggested causes
Blown-out eraser lamp [board KP-762].
Defective CPU U201 on the engine board.
Improper connector insertion to the eraser lamp
[board KP-762].
Replace sensor board (KP-754)
and linked harness (S02407).
Replace harness (S02412)
between drum board (KP-748)
and eraser lamp [board KP762].
Remedy pins or replace
sensor board (KP-754).
See page 5-26.
Measure voltage #1 pin
(ERASEDR*) of sensor
board (KP-754).
Approximately
0 V DC?
Approximately
14 to 15.5 V DC?
Approximately
24 V DC?
Replace sensor board
(KP-754). See page 5-26.
NOTE:
If the problem is not solved by
this flow chart replace the
following items:
Engine board (KP864)
Sensor board (KP754)
Drum unit
6-17
Corrective action
Follow the flow chart
below.
Yes
No
Yes
Replace engine board
No
(KP-864. See page 5-22.
Yes
No
Replace drum unit.
Replace drum unit.
See page 5-12.
See page 5-12.
FS-1900