FAN
PWR
STAT/PROG/SYNC
24
5
Checking Indicator Statuses After Power-On
Use a multimeter to measure the resistance between circuit breakers including NEG (-), RTN (+), and PGND.
Resistance Between NEG (-)
and RTN (+)
Resistance Between NEG (-)
and PGND
Resistance Between RTN (+)
and PGND
+
∞
+
∞
≤ 10 ohms
Yes
FAN/PWR
No
Indicator
Normal State
Abnormal State
Power off the chassis immediately and power
on the chassis again after the fault is rectified.
Whether the Indicators Are Steady Green
6
Checking Board Indicators
If an indicator is in an abnormal state after you power on the equipment, handle the exception immediately.
Check whether each indicator is in the normal state according to the following table, and record the results.
Indicator
Normal State
Abnormal State
STAT
Steady green
Steady red, steady orange, steady off
PROG(Main Control Board only)
Steady green
Steady red, steady off
SYNC(Main Control Board only)
Steady green
Steady red
4
STAT