Better Solutions Are Within Reach
TM
MODEL NUMBER:
PDI-772HE
Document Number:
PD196-038R2
10 Tap AC Central Power Supply
Page 2 of 4
PDi Communication Systems, Inc. 40 Greenwood Lane Springboro, Ohio 45066 USA PH 1-800-628-9870 FX 937-743-5664
CAUTION
28
VAC is present
on the coax cable
during this
measurement.
Field Troubleshooting
Troubleshooting involves determining the fault and then taking corrective
action. The fault is either external to the supply or a fault inside the supply.
If the fault is internal (inside) the supply, remove from service and replace
with a know good working central power supply.
FAULT
CORRECTIVE ACTION
All TVs are dead.
1. Verify AC line voltage to the supply.
2. Power supply main circuit breaker tripped.
Reset. NOTE: A tripped main breaker indicates
an overload condition and may require removing
the power supply from service for further bench
troubleshooting.
3.
Verify AC output voltage (28 VAC) at each “F”
output fitting at the central power supply. If an
“F” output fitting is dead. Reset the
corresponding output circuit breaker if tripped. If
resetting the output circuit breaker does not clear
the fault, remove the central power supply from
service. An internal fault has occurred that
requires bench repair.
Individual TV
dead.
1. At the TV, open the cover on the support arm.
Slide the rubber boot and expose the “F” barrel
connec
tion. Disconnect the “arm side” coax and
verify AC voltage present on the supply side of
the coax. If AC power supply voltage (28 VAC)
is present, a fault has occurred in the TV.
Replace the TV.
2. At the central, check the corresponding output
circuit breaker. If tripped, reset the output circuit
breaker. NOTE: A tripped output circuit breaker
may indicate either a TV or coax cable fault.
Main circuit
breaker will not
reset.
1. Remove from service and replace with a know
good working central power supply.
Output circuit
breaker will not
reset.
1.
Disconnect the coax cable from the suspect ”F”
output connector. Reset the output circuit
breaker. If the circuit breaker holds, a coax
wiring or TV fault has occurred.
2. With the coax cable disconnected, reset the
output circuit breaker. If the circuit breaker trips
an internal fault has occurred that requires bench
repair. Remove from service and replace with a
know good working central power supply.
