IBM 8265 Nways ATM Switch, Installation Manual

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Table 8 (Page 2 of 2). Troubleshooting Using the LED Indicators
LED State Possible Cause Corrective Action
FAN (1-3) Off Fan is not installed or LED is
faulty. Install fan unit or press the LED Test
button to determine if the LED is functional.
Blinking Fan unit is malfunctioning or not
operational. Replace the fan unit (see page 66).
TEMP Off Switch temperature is normal, or
the LED is faulty. Press the LED Test button to determine if
the LED is functional.
Blinking Temperature in the switch is
higher than the allowable limit. 1. Verify that all fan units are operating
normally and that nothing is blocking
air flow through the front of the switch.
If air flow is blocked, heat build-up may
cause an overheat condition.
2. Verify that the required number of fan
units has been installed (never operate
the switch with fewer than two installed
and functioning fan units).
3. Verify that there is at least 3 inches (8
cm) of space behind the switch for
proper air flow. If air flow is blocked,
heat build-up may cause an overheat
condition.
4. Verify that all empty slots contain a
blank faceplate.
5. Lower the room temperature. Even if
all installed fan units are functioning
normally, excessively warm room air
circulated by installed fans may fail to
adequately cool the switch and
installed modules.
ACTIVE On Controller/CPSW module is in
Active mode. None.
Off Controller/CPSW module is in
Standby mode. Verify that the Standby LED is illuminated.
LED is faulty. Press the LED Test button to determine if
the LED is functional.
STBY On Controller/CPSW module is in
Standby mode. None.
Off LED is faulty. Press the LED Test button to determine if
the LED is functional.
Controller/CPSW module fuse
has blown. Replace the module.
Blinking Controller/CPSW module is
faulty. Reset the Standby Controller/CPSW
module. If a reset does not correct the
problem, replace the module.
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IBM 8265: Installation Guide