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TimeHub 5500 TL1 Reference Manual
241
Troubleshooting
097-55501-02 Issue 5: June 2003
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SSSSSSSSSSSS SSSS S SSSSS SSSSSSS S SSS S SSSSS
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Power Supply B in
expansion failed
EXPWRB The –48V A input of the indicated
expansion shelf is not functioning.
1. A typical reason for this is that the
"B" power supply is not connected or
it is connected but the power source is
not functioning.
2. If the "B" power supply is connected
and it has not been successfully
powered before, check that terminal
connections (–48, gnd, rtn) are
correct.
3. Check the "B" fuse LED on the front of
the shelf. If it is lit, the fuse has
blown. The fuse is replaceable.
Replace, but if fuse continues to go
out, shelf may require service.
Rack alarms RACKALM1
RACKALM2
RACKALM3
RACKALM4
RACKALM5
RACKALM6
RACKALM7
Equipment external to the shelf is
generating the indicated rack
alarm.
Troubleshoot the external equipment
generating the alarm.
Rack number out
of range
RACKOOR The rack identification switch has
been set to an invalid number.
Set the switch on the backplane, behind
the management card to 0.
Unidentified alarm
detected
UNKALM A major alarm condition exists in
the shelf.
1. Wait approximately 1 min for the
condition to clear.
2. If the condition does not clear,
remove, then insert, the indicated
failed card.
3. If the condition does not clear,
replace the card.
Minor Alarms
Inferior CLK is
active*
SECACTV The clock card designated with the
inferior oscillator is active because
the Force Active pushbutton was
pressed or the superior clock card
failed.
1. Force the primary clock card active:
use the Switch Duplex Equipment
(SW-DX-EQPT) command, or press
the Force Active pushbutton.
2. If the condition does not clear,
replace the clock card with the
superior oscillator.
Table M. Message Troubleshooting (cont’d)
Error Message/
Condition
Description Event Code Meaning Action
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