Hardware Troubleshooting; Chapter 3 Hardware Troubleshooting; The Pwr Led Does Not Turn On Or Is Blinking; The Alm Led Is On - ZyXEL Communications IES-5106M User Manual

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H A P T E R

Hardware Troubleshooting

This chapter explains how to troubleshoot the system hardware.
3.1 The PWR LED Does Not Turn On or Is
Blinking
The PWR light blinks if the input power for the fans is not stable and is off if there
is no input power. The PWR light stays on if the input for the fans is normal.
Table 3 PWR LED Troubleshooting
STEP CORRECTIVE ACTION
1 Make sure the power wires are properly connected to the power supply and the
power supply is operating normally. Make sure you are using the correct power
source (refer to
are turned ON. Refer to
3 The LED itself, the fan module, or the unit may be faulty; contact your vendor.

3.2 The ALM LED Is On

The ALM LED is on when at least one fan has failed in the fan module. Working
fans emit a low buzz and blow air. If the fans are not working properly, refer to
Section 4.1 on page 67
module.
IES-5106M / IES-5112M / IES-6000M User's Guide
Chapter 5 on page 75). Make sure the power supply modules
Section 4.2 on page
for instructions on changing a fuse or changing the fan
3
72.
63