Brother DCP-7055 Service Manual page 92

■ Error code 9D to 9F, A0
These errors do not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
---
Error, which cannot be specified, occurs.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
■ Error code A1
Cover is Open
Close the Front Cover.
The front cover is open.
<User Check>
• Check if the front cover is closed correctly.
Step
Harness connection failure of high
voltage power supply PCB ASSY
1 (Front cover sensor is mounted in
high voltage power supply PCB
ASSY.)
Part pressing the front cover
2 sensor is broken, which is
provided at inside of front cover
Front cover sensor failure
3
4 Main PCB failure
Cause
Cause
2-55
Remedy
Replace the main PCB ASSY.
Remedy
Check the harness connection of the high
voltage power supply PCB ASSY, and
reconnect it.
Replace the front cover ASSY.
Check the front cover sensor performance
following the procedure described in
"Function code 32". If any problem occurs,
replace the high voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
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