2F3/2F4-3.0
1-5-5
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 communi-
cate with the engine controller PWB
(A0004
The incompatible LED print head is
installed to the printer.
) normally.
Defective LED print
head 4.
Replace the LED print head 4. See page 1-
6-15.
Defective engine
controller PWB
(A0004).
Replace the engine controller PWB (A0004).
See page 1-6-41.
Defective LED print
heads relay PWB
(A0008).
Replace the LED print heads relay PWB
(A0008). See page 1-6-44.
Check the continuity of the harness
(S02869), check the insertion of YC3 of the
engine controller PWB (A0004), if there is
trouble, remedy or replace.
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 1-6-15.
0952
LED print head 2 (EEPROM) commu-
nication error [cyan drum unit]
• The LED print head 2 (EEPROM) of
the cyan drum unit does not communi-
cate with the engine controller PWB
(A0004) normally.
Defective LED print
head 2.
Replace the LED print head 2. See page 1-
6-15.
Defective engine
controller PWB
(A0004).
Replace the engine controller PWB (A0004).
See page 1-6-41.
Defective LED print
heads relay PWB
(A0008).
Replace the LED print heads relay PWB
(A0008). See page 1-6-44.
Check the continuity of the harness
(S02869), check the insertion of YC3 of the
engine controller PWB (A0004), if there is
trouble, remedy or replace.
Check the connection of the FFCs with the
cyan drum unit and the printer main unit,
check the continuity of the FFCs (S03011),
check the connection of the LED print head
2, if there is trouble, remedy or replace. See
page 1-6-15.
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Defective FFCs
(S03011) between
LED print head 2 and
LED print heads relay
PWB (A0008), or
poor contact of the
FFC terminals.
Defective harness
(S02869) between
engine controller
PWB (A0004) and
LED print heads relay
PWB (A0008), or
poor contact of the
connector terminals.
Defective FFCs
(S03011) between
LED print head 4 and
LED print heads relay
PWB (A0008), or
poor contact of the
FFC terminals.
Defective harness
(S02869) between
engine controller
PWB (A0004) and
LED print heads relay
PWB (A0008), or
poor contact of the
connector terminals.
Installing the LED
print head, which is
incompatible with the
printer specification.
Install the compatible LED print head to the
black drum unit.
Installing the LED
print head, which is
incompatible with the
printer specification.
Install the compatible LED print head to the
black drum unit.
Содержание C5020N - FS Color LED Printer
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