TM 5-6350-280-23&P
Table 4-2. Troubleshooting Table - continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
8.
MONITOR AREA STATUS SCREEN INDICATES UNINTERRUPTIBLE POWER SUPPLY (UPS) IS ON BATTERY
POWER YET AC POWER IS INDICATED ON UPS - continued.
Step 3.
Disconnect connector P2 from connector J19 on left backplane and connector P3 from connector J19 on
right backplane of lower drawer assembly. Using VOM, check for less than 25 ohms resistance between
pins 2 and 3, COMMON, of connectors P2 and P3.
If an open exists refer to paragraph 4.6.4 and replace power cable assembly, otherwise go to step 4.
Step 4.
Disconnect connector P2 from connector J19 on left backplane and connector P3 from connector J19 on
right backplane of upper drawer assembly. Using VOM, check for less than 25 ohms resistance between
pins 2 and 3, COMMON, of connectors P2 and P3.
If an open exists refer to paragraph 4.6.4 and replace power cable assembly, otherwise refer to
paragraph 4.6.12 and replace input/output CCA.
9. REMOTE AREA COM ALTERNATING BETWEEN COM-FAIL-100 AND COM-norm-000.
NOTE
·
Refer to table 4-1 for COM message interpretation.
·
Resync-A message also occurs between alternating COM-FAIL-100 and COM-
norm-000. It does not occur every message.
·
This action will only occur when maintenance action at remote area transmitter
has included a code plug change.
Have designated personnel with password enter setup mode. Take area off line. Bring area on line and wait two
minutes.
If COM failure does not clear refer to troubleshooting procedure 1.
10. NO POWER TO COMPUTER.
NOTE
A volt ohm meter (VOM) is required for this procedure.
Step 1.
Check to see if computer, monitor, and printer power switches are in the on position.
If power switches are in on position go to step 2, otherwise position power switches in on position.
Step 2.
Disconnect power cable between computer multiple outlet strip and uninterruptible power supply (UPS)
power cable. Using VOM, check for 120 Vac output from power cable.
If 120 Vac is present go to step 5, otherwise go to step 3.
4-15
