Fault Finding
DK424 RPSU280 Power Supply Test
Strata DK I&M 6/00
14-5
Fault
F
inding
5. Lightly press the three –24 circuit breakers to ensure they have not accidentally opened during
shipment. If a circuit breaker continues to “trip,” remove cabinet PCBs, one at a time, and try
to reset the circuit breaker. Replace defective PCBs if causing –24V fault. If breakers continue
to trip, go to Step 7.
6. Using a DC voltmeter, measure the power supply DC output voltages at the “DC OUT”
connector on the power supply. Place the positive (black) meter lead on the FG screw. Insert
the negative (red) meter lead tip into the DC out connector until it makes contact.
Make sure that +5V, –5V, and –24V are within the range specified in
. Do this test
with PCBs inserted; if a voltage(s) is not within specification, remove PCBs, one at a time and
recheck the voltage. (Power may have to be turned Off and On to restore a voltage.)
Replace any PCB which causes a voltage fault. If voltage tests out of specification with all
PCBs removed from the cabinet, go to Step 7.
7. Unplug the cabinet DC power connector from the power supply “DC OUT” jack. Attempt to
reset -24V breakers per Step 5. If breaker cannot be reset replace power supply; if breakers
reset go to Step 8.
8. Check the power supply DC voltages measuring at the power supply “DC OUT” jack with the
black meter lead on the BATT “+” terminal. If the DC voltages are within specification when
the cabinet DC power connector is disconnected but not within specification when the cabinet
is connected, the cabinet is probably defective.
If the DC voltages are not within specification when the cabinet DC power connector is
unplugged, the power supply probably is defective. Replace the defective cabinet or power
supply per Chapter 5 – DK424 Installation.
Important!
+5
VDC
(white wire) cannot be checked with the DC out cable disconnected.
9. Using the DC voltmeter, check the RPSU280 battery charger as follows: Remove the battery
cable from the power supply “BATT” connector. Place the positive (black) meter lead on the
“+” BATT pin and the negative (red) meter lead on the “–” BATT pin. The allowed range is
(–26.3VDC ~ –27.8VDC). The “BATT” connector output of the RPSU424 is 0VDC unless
connected to good batteries. If BATT output is not within specification, replace the RPSU280.
Содержание Strata AirLink DK40i
Страница 22: ...Introduction Related Documents Media xx Strata DK I M 6 00 ...
Страница 48: ...DK14 Installation DK14 Wiring Diagrams 1 26 Strata DK I M 6 00 ...
Страница 220: ...DK424 Installation Remote Cabinet Installation Instructions 5 68 Strata DK I M 6 00 ...
Страница 262: ...DK424i Configuration Primary Reserve Power Cabinet Hardware 6 42 Strata DK I M 6 00 ...
Страница 450: ...Universal Slot PCB Wiring Option Interface PCB Wiring Diagrams 10 42 Strata DK I M 6 00 ...
Страница 592: ...Peripheral Installation Enhanced 911 Service E911 12 84 Strata DK I M 6 00 ...
Страница 616: ...ACD Installation Spectrum Electronic Wall Boards 13 24 Strata DK I M 6 00 ...
Страница 634: ...Fault Finding Fault Isolation Flowcharts 14 18 Strata DK I M 6 00 ...
Страница 704: ...ISDN Interfaces ISDN Disconnect Cause Code 16 54 Strata DK I M 6 00 ...