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Fault analysis 62
Model 2616RC T-DAC User Manual 5 • Troubleshooting and maintenance
Fault analysis
The following procedures outline steps you should follow when troubleshooting a Model 2616RC malfunction.
1. If possible, talk to the person who filed the trouble complaint and determine the operational symptoms.
Record the symptoms on the appropriate trouble report form (include the front panel LED indications).
2. Refer to table 7 for LED definitions and compare the recorded results from the trouble report against those
in the table, then refer to the section recommended in the table for the maintenance procedure that will
repair the malfunction.
Table 7. LED definitions
LED Location Color Status Meaning
POWER Front
panel
Green
On
solid
Power is being applied. No action recommended.
Flashing The 2616RC has detected a power failure on a power bus. There
may be a problem with the Patton ForeFront chassis power sup
-
ply system such as a failed power supply module in the chassis.
The Model 2616RC will function normally with one power sup
-
ply. Inspect the power supplies in the Patton ForeFront chassis to
identify and replace the failed power supply module. If the
POWER LED continues flashing when all chassis power supplies
are functional, contact Patton Technical Support to determine if
the T-DAC should be replaced.
Off
No input power is being applied. Verify that at least one chas-
sis power supply module is installed in the chassis and func-
tioning normally.
CPU FAIL Front
panel
Red
On
solid
CPU is unable to load the software from FLASH to RAM for
operation. As soon as possible, remove the Model 2616RC
from the Patton ForeFront chassis, wait 30 seconds, then re-
insert the Model 2616RC into the Patton ForeFront chassis and
see if the problem disappears. If the CPU FAIL LED remains lit
after the Model 2616RC completes the power-up cycle, contact
Patton Technical Support to determine if the T-DAC needs to be
replaced.
Off The CPU is operating normally. No action recommended.
ALARM Front
panel
Red
On
solid
A minor alarm condition has been detected.
Flash-
ing
A major alarm condition has been detected.
Off The Model 2616RC is operating normally. No action rec-
ommended.