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