Kyocera FS C5020N - Color LED Printer Service Manual page 67

Code
7002 Toner motor 2 overcurrent detection
error (cyan toner)
• The engine controller PWB (A0004)
detected the overcurrent of toner
motor 2.
7003 Toner motor 1 overcurrent detection
error (magenta toner)
• The engine controller PWB (A0004)
detected the overcurrent of toner
motor 1.
7004 Toner motor 3 overcurrent detection
error (yellow toner)
• The engine controller PWB (A0004)
detected the overcurrent of toner
motor 3.
7401 Black developer unit non- installing
error
• The toner sensor 4 inside the black
developer unit did not output the den-
sity detection signal, judged the
engine controller PWB (A0004) the
black developer unit is not installed.
Contents
Causes Check procedures/corrective measures
Defective toner Replace the toner motor 2. See page 1-6-
motor 2. 50.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Lump of toner Replace the cyan toner container.
inside cyan toner
container or defec-
tiveness of toner
replenishment
drive system.
Defective toner Replace the toner motor 1. See page 1-6-
motor 1. 50.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Lump of toner Replace the magenta toner container.
inside magenta
toner container or
defectiveness of
toner replenish-
ment drive system.
Defective toner Replace the toner motor 3. See page 1-6-
motor 3. 50.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Lump of toner Replace the yellow toner container.
inside yellow toner
container or defec-
tiveness of toner
replenishment
drive system.
Defective harness Check the damage of harness of the toner
of the toner sensor sensor 4, check the connection of the con-
4, defective con- nector with the black developer unit and the
nection of the con- printer main unit, if there is trouble, remedy
nector between or replace.
black developer
unit and the printer
main unit or poor
contact of the con-
nector terminals.
Defective toner Replace the black developer unit. See page
sensor 4. 1-6-12.
Defective engine Replace the engine controller PWB (A0004).
controller PWB See page 1-6-41.
(A0004).
Defective engine Replace the engine relay PWB (A0009).
relay PWB
(A0009).
Remarks
2F3/2F4
1-5-15