Brother HL-6050 Service Manual page 234

M-9 ROM error / D-RAM error / NV-RAM error
Possible cause Step
Main PCB 1
Software bug 2
M-10 SXX error
Possible cause Step
Main PCB 1
Software bug 2
M-11 E41 error
Possible cause Step
Process unit 1
ground wire
connection
Corona failure 2
High-voltage 3
power supply
PCB failure
Metallic parts 4
failure
(electrostatic
discharge when
feeding paper)
Check
Is it possible to print the test
page with the method of
subsection 4.5.1 'Information'
"PRINT TEST" in Chapter
Does this problem appear
when printing specific data or
printing under a specific
environment?
Check
Is it possible to print the test
page with the method of
subsection 4.5.1 'Information'
"PRINT TEST" in Chapter
Does this problem appear
when printing specific data or
printing under a specific
environment?
Check
Is the ground wire on the
process unit secured
correctly?
Is the corona wire on the
process unit dirty?
Is the high-voltage power
supply PCB fixed correctly?
Are any metallic parts loose?
6-31
HL-6050/6050D/650DN SERVICE MANUAL
Result
No Replace the main PCB.
2?
Yes Inform the Brother office of
the used specific data, printer
condition and system
environment.
Result
No Replace the main PCB.
2?
Yes Inform the Brother office of
the used specific data, printer
condition and system
environment.
Result
No Secure the ground wire
correctly with the shoulder
screw
If the ground wire is bent, fix it
to a right shape with a pair of
pliers.
Yes Clean the corona wire with
the wire cleaner.
Yes Reinstall the high-voltage
power supply PCB correctly.
Yes Secure the parts correctly.
Remedy
Remedy
Remedy