Triumph Adler CLP3316, Service Manual

Page: 54 / 188

2HJ/2HK
1-4-4
0951 LED print head 4 (EEPROM) commu-
nication error [black drum unit]
The LED print head 4 (EEPROM) of the
black drum unit does not communicate
with the engine controller PWB (A0004)
normally.
The incompatible LED print head is
installed to the printer.
Defective LED print
head 4. Replace the LED print head 4. See page 1-
5-15.
Installing the LED
print head, which is
incompatible with
the printer specifi-
cation. Install the compatible LED print head to the
black drum unit.
Defective engine
controller PWB
(A0004). Replace the engine controller PWB (A0004).
See page 1-5-41.
Defective LED print
heads relay PWB
(A0176). Replace the LED print heads relay PWB
(A0176). See page 1-5-44.
Defective harness
(S03214) between
engine controller
PWB (A0004) and
LED print heads
relay PWB
(A0176), or poor
contact of the con-
nector terminals. Check the continuity of the harness
(S03214), check the insertion of YC3 of the
engine controller PWB (A0004), if there is
trouble, remedy or replace.
Defective FFCs
(S03011) between
LED print head 4
and LED print
heads relay PWB
(A0176), or poor
contact of the FFC
terminals. Check the connection of the FFCs with the
black drum unit and the printer main unit,
check the continuity of the FFCs (S03011),
check the connection of the LED print head
4, if there is trouble, remedy or replace. See
page 1-5-15.
Code Contents
Remarks
Causes Check procedures/corrective measures