Brother MFC-9420CN - Page 263

Confidential
9-7
Error Code
(Hex)
Symptom Probable Cause Solution
Yellow switching
clutch
defective
Replace the yellow
switching clutch
34 Yellow switching clutch error
Engine controller board
defective
Replace the engine
controller board.
Magenta switching
clutch
defective
Replace the magenta
switching clutch
35 Magenta switching clutch
error
Engine controller board
defective
Replace the engine
controller board.
Cyan switching clutch
defective
Replace the cyan
switching clutch
36 Cyan switching clutch error
Engine controller board
defective
Replace the engine
controller board.
Black switching
clutch
defective
Replace the black
switching clutch
37 Black switching clutch error
Engine controller board
defective
Replace the engine
controller board.
Toner cartridge
defective
Replace the toner
cartridge
Toner retract solenoid
assy
defective
Replace the toner retract
solenoid assy
38 Yellow switching solenoid
error
Engine controller board
defective
Replace the engine
controller board.
Toner cartridge
defective
Replace the toner
cartridge
Toner retract solenoid
assy
defective
Replace the toner retract
solenoid assy
39 Magenta switching solenoid
error
Engine controller board
defective
Replace the engine
controller board.
Toner cartridge
defective
Replace the toner
cartridge
Toner retract solenoid
assy
defective
Replace the toner retract
solenoid assy
3A Cyan switching solenoid error
Engine controller board
defective
Replace the engine
controller board.