Flow For Actions When The Power Led Is Turned Off - Mitsubishi Electric MELCEC Q Series User Manual

11. TROUBLESHOOTING

11.2.2 Flow for actions when the POWER LED is turned off

The corrective action when the POWER LED turns off when the power supply is turned on
or during operation is described.
The POWER LED
turned off.
Is the power
being supplied?
Is the
power supply
voltage within 85 to
264VAC?
Is the
power supply
module securely fixed
to the base
unit?
Are the
overvoltage
protection and
overcurrent protection
operating?
Describe the problem to
the nearest service center,
retail store, or corporate.
NO
YES
NO
YES
NO
NO
YES
NO
YES
NO
NO
Supply the power.
NO
Does the
POWER LED
turn on?
Set the supplied voltage
within the regulated range.
Does the
POWER LED
turn on?
Fix the power supply
module securely.
Does the
POWER LED
turn on?
(1) Check the current
capacity, and reduce the
amount of overcurrent.
(2) Turn off the input
power supply, then on.
Does the
POWER LED
turn on?
11 - 3
YES
YES
YES
YES
Complete