User`s manual
Troubleshooting Troubleshooting
11 – 8
11.2.4 When the POWER LED has turned off
Specified voltage range:
Rated input voltage 100–120 V AC: 85 to 132 V AC,
Rated input voltage 200–240 V AC: 170 to 264 V AC,
Rated input voltage 24 V DC: 15.6 to 31.2 V DC
Applicable only to the redundant power supply module
The POWER LED turned off
refer to (A) on the next page
Is the POWER LED
turned on?
Adjust the voltage within the specification
Mount the power supply module securely
Completed
The base unit that includes the
power supply module is faulty.
(Replace the base unit.)
Is the MODE
LED of the CPU module on
in green?
Is the power voltage within
the specification?
Is the power supply module
mounted securely?
YES
NO
YES
NO
NO
NO
YES
YES
Is the power being supplied?
NO
YES (green)
refer to (B) on the next page
NO
Remove all the modules except for
the power supply module from the
base unit.
refer to section 11.2.6
Is the POWER LED on?
YES (red)
YES (green)
NO
refer to section 11.2.6
Is the POWER LED on?
YES (red)
YES (green)
NO
Is the POWER LED on?
YES (red)
YES (green)
refer to section 11.2.6
Supply power