Brother HL-3040CN Service Manual page 76

■ Error code 18
-
Auto color registration fails.
< >
User Check
- Replace the belt unit with a new one.
- Replace the waste toner box with a new one.
Step
1 Registration mark L PCB ASSY
failure
2 HVPS control PCB failure
3
High-voltage power supply PCB
failure
4 Main PCB failure
■ Error code 1A
Print Unable 1A
Turn the power switch off and open the Top Cover. Wait 30 minutes, and then
turn it on again.
Dew condensation might have occurred in the machine. (The temperature/humidity sensor on
the high voltage control PCB detects sudden environmental change.) / High-voltage power
supply PCB error/ Drum unit error
< >
User Check
- Power off and open the top cover. Wait 30 minutes, and then turn it ON again after closing
the top cover.
- Clean the corona wire in the drum unit.
- Replace the drum unit with a new one.
Step
1 Dirt on drum unit
electrodes
2 HVPS control PCB failure
3 High-voltage power supply PCB
failure
Cause
Cause
3-12
Remedy
Replace the registration sensor holder
ASSY.
Replace the HVPS control PCB ASSY.
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Clean the electrodes of the drum unit and
main body. (Refer to Fig. 3-3 (P3-32)
Fig. 3-6 (P3-33))
Replace the HVPS control PCB ASSY.
Replace the high-voltage power supply
PCB ASSY.
and
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