Service manual

2-68
Confidential
■ Error code E7 to E9, EA, EB
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.
■ Error code EC
Main fan error.
■ Error code ED
Communication with the wireless LAN PCB cannot be established upon startup of the power
supply. (Wireless LAN model only)
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<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Print Unable EC
Turn the power off and then back on again.
Step Cause Remedy
1
Harness connection failure of main
fan
Check the harness connection of the main
fan and reconnect it.
2 Main fan failure Replace the main fan.
3
High voltage power supply PCB
failure
Replace the high voltage power supply
PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Print Unable ED
Turn the power off and then back on again.
Step Cause Remedy
1
Harness connection failure of
wireless LAN PCB
Check the harness connection of the
wireless LAN PCB and reconnect it.
2 Wireless LAN PCB failure Replace the wireless LAN PCB.
3
High voltage power supply PCB
failure
Replace the high voltage power supply
PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.