Brother DCP-7030 Service Manual page 27

■ Error code 5A
Print Unable 5A
See Troubleshooting and routine maintenance chapter in User's Guide.
HVPS PCB failure (Developing bias voltage failure)
Step
HVPS PCB ASSY harness
1 connection failure
2 HVPS PCB failure
3 Main PCB failure
■ Error code 5B
Cartridge Error
Put the Black Toner Cartridge back in.
New toner detection lever malfunction
User Check
• Check if the toner cartridge is attached.
Step
New toner detection switch
1
harness connection failure
2 New toner detection switch failure
3 Main PCB failure
Cause
Cause
1-9
Remedy
Check the harness connection between the
HVPS PCB and main PCB. Then,
reconnect them.
Replace the HVPS PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the harness connection of the new
toner detection switch. Then, reconnect it.
Replace the new toner harness ASSY.
Replace the main PCB ASSY.
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