Fault Description
A
switch
generates a power module alarm, and the RUN or INPUT indicator on the power
module is off.
Possible Causes and Troubleshooting Procedure
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DANGER:
Protect
yourself from electric shock when you are touching a power
module.
Analyze the
cause of the fault according to keywords in the alarm message and indicator
status on the power module.
Run the
display alarm {
all | slot slot-id } command to check
alarms about the power module.
800 W AC power module, 2200 W DC
power module, and 2200 W AC power module
Table
1 describes keywords in alarms for an 800 W AC power module, 2200 W DC power
module, and 2200 W AC power module, indicator status on these power modules, and
troubleshooting methods in different situations.
Table 1 Power module alarm keywords
|
Keyword
|
Possible
Indicator Status
|
Possible
Causes
|
Solution
|
|
PWR_FAULT
|
- The RUN
indicator is off.
- The ALM
indicator is steady yellow.
- The ALM
indicator is blinking yellow.
- The FAULT
indicator is steady red.
|
General
power module alarm.
|
- Run the
display device command to check whether the CMU is working
normally.
If the CMU
is not working normally, see "Card Registration Failure" to handle the problem.
If the problem persists, go to step 5.
If the CMU
is working normally, go to 2.
- Check whether the input voltage
of the power module is normal.
Select an
appropriate measurement mode on the multimeter and use the test probes to
measure the input voltage.
If the
input voltage is in the normal range, check whether the power switch on the
power module is in the ON position. If so, go to 3.
If the input
voltage is out of the normal range, check the power input lines and power
switches and ensure that they are in normal states. If the fault persists, go to
step 3.
- Remove and reinstall the power
module in the original slot, and check whether the power module can work
normally. If the fault persists, go to 4.
- Install the power module in
another power supply slot, and check whether the power module can work normally.
If the fault persists, go to 5.
- Collect information and visit http://www.thunder-link.com/support
|
|
MODE_FAULT
|
- The RUN
indicator is off.
- The ALM
indicator is steady yellow.
- The ALM
indicator is blinking yellow.
- The FAULT
indicator is steady red.
|
- Fans of
the power module have failed.
- The
output voltage of the power module exceeds the upper threshold.
- The
output voltage of the power module is below the lower
threshold.
|
|
MODE_PROTECT
|
- The RUN
indicator is off.
- The ALM
indicator is steady yellow.
- The ALM
indicator is blinking yellow.
|
- The air
breaker connected to the power module is switched off.
- The power
module is in overtemperature protection state.
- The power
module is in overcurrent protection state.
- The power
module is in overvoltage protection state.
- The power
module is in undervoltage protection state.
|
|
DROP
|
- The RUN
indicator is off.
- The ALM
indicator is blinking yellow.
|
The power
module has encountered a power failure.
|
|
FAN_FAULT
|
- The RUN
indicator is off.
- The ALM
indicator is blinking yellow.
- The FAULT
indicator is steady red.
|
Fans of the
power module have failed.
|
- Remove
and reinstall the power module in the original slot, and check whether the power
module can work normally. If the fault persists, go to 2.
- Install the power module in
another power supply slot, and check whether the power module can work normally.
If the fault persists, go to 3.
- Collect information and visit
http://www.thunder-link.com/support
|
1600 W DC power module
Table
2 describes the keywords in alarms for a 1600 W DC power module, indicator
status on the power module, and troubleshooting methods in different
situations.
Table 2 Power module alarm keywords
|
Keyword
|
Possible
Indicator Status
|
Possible
Causes
|
Solution
|
|
DC
PWR_FAULT
|
- The INPUT
indicator is off.
- The ALM
indicator is steady red.
|
The power
module receives no power input.
|
- Check
whether the input voltage of the power module is normal.
Select an
appropriate measurement mode on the multimeter and use the test probes to
measure the input voltage of the power module.
If the input
voltage is in the normal range, check whether the power switch on the power
module is in the ON position. If so, go to 2.
If the
input voltage is out of the normal range, check the power input lines and power
switches and ensure that they are in normal states. If the fault persists, go to
2.
- Remove and reinstall the power
module in the original slot, and check whether the power module can work
normally. If the fault persists, go to 3.
- Install the power module in
another power supply slot, and check whether the power module can work normally.
If the fault persists, go to 4.
- Collect information and visit
http://www.thunder-link.com/support
|
|
DC
PWR_LACK
|
- The INPUT
indicator is off.
- The ALM
indicator is steady red.
|
The input
voltage of the power module is below the lower threshold.
|
Measure the
voltage of the external power source. Ensure that the power source can supply
power to the power module normally.
|
|
DC
SWITCH_STA
|
- The INPUT
indicator is off.
- The ALM
indicator is steady red.
|
The power
module is turned off.
|
Check the
power switch of the power module. If the power switch is in the OFF position,
turn it to the ON position.
|
|
DC
FUSE_FAULT
|
The ALM
indicator is steady red.
|
The fuse of
the power module is damaged.
|
- Remove
and reinstall the CMU in the same CMU slot, and check whether the alarm is
cleared. If the fault persists, go to 2.
- Install the CMU in the other
CMU slot and check whether the alarm is cleared. If the fault persists, go to 3.
- Remove and reinstall the power
module in the original slot, and check whether the power module can work
normally. If the fault persists, go to 4.
- Install the power module in
another power supply slot, and check whether the power module can work normally.
If the fault persists, go to 5.
- Collect information and visit
http://www.thunder-link.com/support
|
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