Brother DCP-9055CDN Service Manual page 136

■ Error code F0
Print Unable F0
Turn the power off and then back on again.
USB flash memory does not work properly.
<User Check>
- Replace the USB flash memory.
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Malfunction of firmware
2 Main PCB failure
■ Error code F1
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The dial number is not found.
This error does 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.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
■ Error code F2
WT Box End Soon
The waste toner box near full. (The belt cleaner voltage becomes lower than the specified
value.)
<User Check>
- Replace the waste toner box with a new one.
Step
1 High-voltage power supply PCB
failure
2 Main PCB failure
Cause
Cause
Cause
2-98
Remedy
Rewrite the latest firmware.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
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