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Confidential
■ Error code 3F
Write error in engine firmware.
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.
■ Error code 40
Error in the high-voltage power supply PCB while the printer is in operation.
Error code 42
High-voltage power supply PCB transfer error.
Print Unable 3F
Turn the power off and then back on again.
Step Cause Remedy
1 Engine PCB failure Replace the engine PCB ASSY.
2 Main PCB failure Replace the main PCB ASSY.
Print Unable 40
Turn the power off and then back on again.
Print Unable 42
Turn the power off and then back on again.
Step Cause Remedy
1 Engine PCB failure Replace the engine PCB ASSY.
2 Main PCB failure Replace the main PCB ASSY.
3 Harness connection failure of
high-voltage power supply PCB
Check the harness connection of the
high-voltage power supply PCB ASSY
and reconnect it.
4 High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB ASSY.
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