Brother DCP 8040 - B/W Laser - All-in-One Service Manual page 211

CHAPTER 6 TROUBLESHOOTING
Error
Code
(Hex)
73
74
75
76
78
79
7A
7B
7C
80
81
82
83
84
85
86
87
88
A1
Error factor
Drum unit is not mounted.
Toner empty.
In-casing temperature error.
Heater harness disconnected or broken.
Heater thermistor harness disconnected or
broken.
In-casing temperature sensor harness
disconnected or broken.
Main motor does not synchronize with the
reference clock.
ASIC error on the main PCB.
Engine PCB error.
At the start of recording operation, the
controller detects that paper is smaller than
A4 size in length or width.
Paper jam.
Paper feeding error.
Recording paper jam.
(At the retry of paper pulling-in operation,
the registration sensor is not OFF.)
Recording paper jam.
(The paper width sensor and/or registration
sensor has detected a paper jam.)
No paper cassette loaded.
No 2nd paper cassette loaded.
Main motor stop position error.
Recording paper jam.
(Even after paper pulling-in operation, the
registration sensor is still OFF.)
Front cover opened.
• Toner sensor
• Drum unit
• Toner sensor
• Toner cartridge
• Thermistor ASSY
• Thermistor ASSY
• Halogen lamp
• Thermistor ASSY
• Thermistor ASSY
• Main PCB
• Engine PCB
• Main motor
• Paper size
• Front registration sensor
• Jammed paper
• Paper pick up roller
• Registration sensor
• Main PCB
• Registration sensor actuator
• If the paper width sensor is
defective, replace the needle tube
& head flat cable ASSY.
• Main PCB
• Main motor
• Registration sensor actuator
• If the paper width sensor is
defective, replace the needle tube
& head flat cable ASSY.
• Main PCB
• Front cover sensor
• Main PCB
6-8
Check: