User Manual

ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenance
Page 4-11
© 2004, ADC Telecommunications, Inc.
Remote Unit Front Panel LED Software Fault/Status Indicator Corrective Action
or Reference
Fwd/Rev
(Port 1/Port 2)
See Table 4-7
Problem E
See Table 4-7
Problem E
Green - Normal
Red - Major Alarm
Pri Rx Light - No light received
over optical forward path
Pri Errors - Excessive errors
received over optical forward path
PA
Green - Normal
Yellow - Minor Alarm
Red - Major Alarm
Install LPA
Check LPA. See
Table 4-8
Check LPA. See
Table 4-8
Check LPA. See
Table 4-8
Check LPA. See
Table 4-8
Check LPA. See
Table 4-8
LPA Detect - LPA
not installed
LPA Over Power - LPA
signal level too high
LPA VSWR - The LPA
VSWR is too high
LPA DC Fail - LPA DC
power supply failure
LPA Loop Failed - LPA
internal loop failure
LPA Low Power - LPA
internal amplifier failure
LPA Fan - Fan failure
LPA Temp - Over temperature
Replace
LPA fan
See Table 4-7
Problem C
VSWR
Green - Normal
Red - Major Alarm
System VSWR - The VSWR at
the quadraplexer is too high
See Table 4-7
Problem D
Host Lost - The STM cannot
communicate with Host (HU)
EMS Link Status - The EMS cannot
communicate with STM
Minor Extern Input - Minor external
alarm reported by STM
Major Extern Input - Major external
alarm reported by STM
RF Power - No RF power detected
at quadraplexer (STM)
LPA Disable - The LPA is shut down
No Associated LED
See Table 4-7
Problem G
See Table 4-7
Problem G
See Table 4-7
Problem H
See Table 4-7
Problem F
See Table 4-7
Problem E
Check LPA. See
Table 4-8
Table 4-6. Remote Unit Fault/Alarm Isolation Diagram, continued
20016-A