LOOSE CONNECTION
SM 19 G390
G390
Duplex Unit
3. TROUBLESHOOTING
3.1 LOOSE CONNECTION
The table below lists some possible symptoms that can be caused by loose
connections on the duplex controller board.
Symptom Possible Cause
The operation panel shows that the printer
started to warm up. But the printer does not
become “Ready.”
One of the following connectors is not
connected: CN101, CN103, CN108, CN109.
The printer does simplex printing when you
have set duplex printing from the printer
driver.
Connector CN100 is not connected.
A paper jam occurs when the trailing edge is
near paper sensor 1.
Connector CN106 is not connected.
A paper jam occurs when the trailing edge is
near paper sensor 2.
Connector CN107 is not connected.
A paper jam occurs when the leading edge
is near the entrance roller.
Connector CN102 is not connected.
G390T902.WMF
CN101
CN108
CN109
CN106
CN107
CN100
CN103
CN102
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