2HJ/2HK
1-4-8
5301
Eraser lamp 4 error (black drum unit)
The eraser lamp 4 [PWB] (KP-1090) of
the black drum unit does not communi-
cate with the engine controller PWB
(A0004) normally.
Defective eraser
lamp 4 [PWB] (KP-
1090).
Replace the eraser lamp 4 [PWB] (KP-
1090).
Defective engine
controller PWB
(A0004).
Replace the engine controller PWB (A0004).
See page 1-5-41.
Defective drum
PWB 4 (KP-972).
Replace the black drum unit. See page 1-5-
13.
Defective harness
(S03212) between
drum PWB 4 (KP-
972) and eraser
lamp 4 [PWB] (KP-
1090), or poor con-
tact of the connec-
tor terminals.
Check the connection of the YC402 connec-
tor of the drum PWB 4 (KP-972), if there is
trouble, remedy or replace.
Defective harness
(S03214) between
engine controller
PWB (A0004) and
LED print heads
relay PWB (A0176),
or poor contact of
the connector termi-
nals.
Check the continuity of the harness
(S03214), check the connection YC3 con-
nector of the engine controller PWB
(A0004), if there is trouble, remedy or
replace.
Defective LED print
heads relay PWB
(A0176).
Replace the LED print heads relay PWB
(A0176). See page 1-5-44.
Code
Contents
Remarks
Causes
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