Defective Harness - Kyocera Mita FS-C5016N - Color LED Printer Service Manual

FS-C5016N
Code
7402 Magenta developer unit non- install-
ing error
• The toner sensor 1 inside the magenta
developer unit did not output the den-
sity detection signal, judged the
engine controller PWB (KP-1054) the
magenta developer unit is not
installed.
7403 Cyan developer unit non- installing
error
• The toner sensor 2 inside the cyan
developer unit did not output the den-
sity detection signal, judged the
engine controller PWB (KP-1054) the
cyan developer unit is not installed.
7404 Yellow developer unit non- installing
error
• The toner sensor 3 inside the yellow
developer unit did not output the den-
sity detection signal, judged the
engine controller PWB (KP-1054) the
yellow developer unit is not installed.
1-5-14
Contents
Causes Check procedures/corrective measures

Defective harness

Check the damage of harness of the toner
of the toner sensor sensor 1, check the connection of the con-
1, defective con- nector with the magenta developer unit and
nection of the con- the printer main unit, if there is trouble, rem-
nector between edy or replace.
magenta devel-
oper unit and the
printer main unit or
poor contact of the
connector termi-
nals.
Defective toner Replace the magenta developer unit. See
sensor 1. page 1-6-11.
Defective engine Replace the engine controller PWB (KP-
controller PWB 1054). See page 1-6-25.
(KP-1054).
Defective engine Replace the engine relay PWB (KP-966).
relay PWB (KP-
966).
Defective harness Check the damage of harness of the toner
of the toner sensor sensor 2, check the connection of the con-
2, defective con- nector with the cyan developer unit and the
nection of the con- printer main unit, if there is trouble, remedy
nector between or replace.
cyan developer unit
and the printer
main unit or poor
contact of the con-
nector terminals.
Defective toner Replace the cyan developer unit. See page
sensor 2. 1-6-11.
Defective engine Replace the engine controller PWB (KP-
controller PWB 1054). See page 1-6-25.
(KP-1054).
Defective engine Replace the engine relay PWB (KP-966).
relay PWB (KP-
966).
Defective harness Check the damage of harness of the toner
of the toner sensor sensor 3, check the connection of the con-
3, defective con- nector with the yellow developer unit and the
nection of the con- printer main unit, if there is trouble, remedy
nector between or replace.
yellow developer
unit and the printer
main unit or poor
contact of the con-
nector terminals.
Defective toner Replace the yellow developer unit. See page
sensor 3. 1-6-11.
Defective engine Replace the engine controller PWB (KP-
controller PWB 1054). See page 1-6-25.
(KP-1054).
Defective engine Replace the engine relay PWB (KP-966).
relay PWB (KP-
966).
Remarks