Flow For Actions When The Mode Led Turns Off - Mitsubishi Electric MELCEC Q Series User Manual

11. TROUBLESHOOTING

11.2.3 Flow for actions when the MODE LED turns off

The corrective action when the MODE LED turns off at power on is described.
The MODE LED turns off.
Is the power
supplied?
YES
Is each module
correctly installed?
YES
Is the reset switch of
the CPU module
canceled?
Is the extension cable
properly connected?
YES
Describe the problem to the
nearest system service, retail
store, or corporate office, and
obtain advice.
NO
NO
NO
YES
NO
Supply the power.
Does the
NO
MODE LED
turn on?
Install each module correctly.
NO
Does the MODE LED
turn on?
Cancel the reset.
NO
Does the MODE LED
turn on?
Connect the extension cable
properly. (From OUT connector
to IN connector)
NO
Does the MODE LED
turn on?
11 - 4
YES
YES
YES
YES
Completion