Kyocera FS C5020N - Color LED Printer Service Manual page 58

2F3/2F4-3.0
Code
0953 LED print head 1 (EEPROM) commu-
nication error [magenta drum unit]
• The LED print head 1 (EEPROM) of
the magenta drum unit does not com-
municate with the engine controller
PWB (A0004) normally.
0954 LED print head 3 (EEPROM) commu-
nication error [yellow drum unit]
• The LED print head 3 (EEPROM) of
the yellow drun unit does not commu-
nicate with the engine controller PWB
(A0004) normally.
1-5-6
Contents
Causes Check procedures/corrective measures
Defective LED print Replace the LED print head 1. See page 1-
head 1. 6-15.
Installing the LED Install the compatible LED print head to the
print head, which is black drum unit.
incompatible with the
printer specification.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Defective LED print Replace the LED print heads relay PWB
heads relay PWB (A0008). See page 1-6-44.
(A0008).
Check the continuity of the harness
Defective harness
(S02869), check the insertion of YC3 of the
(S02869) between
engine controller PWB (A0004), if there is
engine controller
trouble, remedy or replace.
PWB (A0004) and
LED print heads relay
PWB (A0008), or
poor contact of the
connector terminals.
Check the connection of the FFCs with the
Defective FFCs
magenta drum unit and the printer main unit,
(S03011) between
check the continuity of the FFCs (S03011),
LED print head 1 and
check the connection of the LED print head
LED print heads relay
1, if there is trouble, remedy or replace. See
PWB (A0008), or
page 1-6-15.
poor contact of the
FFC terminals.
Defective LED print Replace the LED print head 3. See page 1-
head 3. 6-15.
Installing the LED Install the compatible LED print head to the
print head, which is black drum unit.
incompatible with the
printer specification.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Defective LED print Replace the LED print heads relay PWB
heads relay PWB (A0008). See page 1-6-44.
(A0008).
Check the continuity of the harness
Defective harness
(S02869), check the insertion of YC3 of the
(S02869) between
engine controller PWB (A0004), if there is
engine controller
trouble, remedy or replace.
PWB (A0004) and
LED print heads relay
PWB (A0008), or
poor contact of the
connector terminals.
Check the connection of the FFCs with the
Defective FFCs
magenta drum unit and the printer main unit,
(S03011) between
check the continuity of the FFCs (S03011),
LED print head 3 and
check the connection of the LED print head
LED print heads relay
3, if there is trouble, remedy or replace. See
PWB (A0008), or
page 1-6-15.
poor contact of the
FFC terminals.
Remarks