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Model 2604 T1/E1 DACS Getting Started Guide
Fault analysis
The following procedures outline steps you should follow when troubleshooting a DACS 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 4 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.
LED
Location Color Status
POWER
Front panel Green On solid Power is being applied. No action recommended.
CPU FAIL
Front panel
ALARM
Front panel
SYSTEM
Front panel Green
Fault analysis
Table 4. LED definitions
Flashing Either one of the external power sources or one of the 2064's
power supplies has malfunctioned. The DACS will function nor-
mally indefinitely with one power supply. To verify the suspected
problem, contact Patton Technical Support to determine whether
the DACS needs to be replaced or not.
Off
No input power is being applied. Verify that power is being
supplied to the DACS.
Red
On solid CPU is unable to load the software from FLASH to RAM for
operation. As soon as possible, unplug both power cables from
the DACS, wait 30 seconds, then plug the cables back into the
DACS to see if the problem disappears. If the CPU FAIL LED
remains lit after the DACS completes the power-up cycle, con-
tact Patton Technical Support to determine whether the DACS
needs to be replaced or not.
Off
The CPU is operating normally. No action recommended.
Red
On solid A minor alarm condition has been detected.
Flashing A major alarm condition has been detected.
Off
The DACS is operating normally. No action recommended.
Flashing The DACS is operating normally. No action recommended.
Off
The DACS is not functioning properly. As soon as possible,
unplug both power cables from the DACS, wait 30 seconds,
then plug the cables back into the DACS to see if the problem
disappears. If the SYSTEM LED is still lit after the DACS com-
pletes the power-up cycle, contact Patton Technical Support to
determine whether the DACS needs to be replaced or not.
5 • Troubleshooting and maintenance
Meaning
53
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