Paradyne 8820, Руководство по установке

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6. Troubleshooting
6-2
November 2004 8820-A2-GN20-80
LEDs
The following table describes the meaning and states of the LEDs on the front
panel of the BAC. For individual card LEDs, see the appropriate card Installation
Instructions.
LED LED is . . . Indicating . . .
Power A Green
Off
Normal operation for Power Source A.
Low or no voltage for Power Source A.
Power B Green
Off
Normal operation for Power Source B.
Low or no voltage for Power Source B.
Fan System Alarm Yellow
Off
Fan failure or a single fan in the Fan Module is
working at less than 50% of its normal output.
Normal operation or no power.
Major Alarm Yellow
Off
Major alarm present on any of the cards in the
chassis.
The card with alarm conditions will also have its
Alarm LED lit.
No major alarms.
Minor Alarm Yellow
Off
Minor alarm present on any of the cards (or Power
Alarm problem) in the chassis.
The card with alarm conditions will also have its
Alarm LED lit.
No minor alarms.
ALARMS
Major Minor Fan B
A
POWER
48V R
T N
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE S
OURCE BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED AT THE S
OURCE BEFORE REMOVING OR INSTALLING THIS PWR ENTRY MODULE
ALARMS
Major
Fan
B
A
POWER
04-17554
Minor
SCP
SERIAL
CLOCK
A
ALARM
OUT
CLOCK
B
MCP
SERIAL
ALARM
IN
HUB-2
LAN
MCP
LAN
TAP
OUT
SCP
LAN
HUB-1
LAN
TAP
IN