User Manual

ADCP-75-150 • Preliminary Issue A • March 2003 • Section 5: Maintenance
Page 5-3
© 2003, ADC Telecommunications, Inc.
Table 5-1. Host Unit LED Indicators
INDICATOR COLOR DESCRIPTION
POWER
Green
Off
Indicates if the HU is powered or un-powered.
The DC power source is on.
The DC power source is off.
STANDBY
Green (blinking)
Yellow (blinking)
Red (blinking)
Off
Indicates if the system is in the standby, normal, test, or
program load mode.
The HU is in the standby mode.
The HU is in the program load mode.
The HU is in the test mode.
The HU is in the normal mode.
HOST UNIT
Green
Yellow
Red
Indicates if the HU is normal, over temperature, or if a
fault is detected.
The HU is normal.
High temperature detected in HU.
Fault detected by the HU or HU/RU band mismatch.
REMOTE UNIT
Green
Yellow
Red
Indicates if an alarm is detected at the RU.
No alarms detected at the RU.
A minor alarm is detected at the RU.
A major alarm is detected at the RU.
DRIVE
Green
Yellow
Red
Indicates if the forward path RF signal level is normal,
above overdrive threshold, or below underdrive threshold.
The RF signal level is normal
The RF signal level is below the underdrive threshold.
The RF signal level is above the overdrive threshold.
PORT 1/PORT 2
Green
Red
Indicates if the reverse path optical signal received from
the RU is normal or if errors are detected.
The reverse path optical signal is normal.
Excessive errors are detected in the reverse path optical signal
or the HU can’t communicate with the STM.
Table 5-2. Linear Power Amplifier LED Indicator
INDICATOR COLOR DESCRIPTION
STATUS
Green (blinking)
Green
Yellow (blinking)
Yellow
Red
Indicates the operational state of the LPA and whether or
not any faults are detected.
The LPA is in the normal state.
The LPA is in a forced shutdown state, no faults detected.
The LPA is in the normal state, minor fault detected.
The LPA is initializing.
The LPA is in an internal shutdown state, major fault detected.