50
M
D1
FAN
PW
R
A
L
M
PW
R
A
L
M
PWR
AL
M
PWR
AL
M
Powering On the Equipment
Before powering on the equipment, ensure that the equipment is properly installed, all cables are properly
connected, and toggle lever switches on IF boards are turned off.
CAUTION
Status Description of Indicators
Indicator
Status
Description
PWR
Constantly on and green
The power is functioning properly.
Off
The power supply fails.
ALM
Constantly on and green
The board is being initialized.
Constantly on and red
The power board reports an alarm.
Off
No alarm is reported.
FAN
Normally on in green color
The fan is functioning properly.
Constantly on and red
The fan is malfunctioning.
Off
The fan is powered off.
Check and ensure that the STAT indicators on the system control, switching, and timing board are on in green color.