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Installation, Operation, and Maintenance Manual # 509252 Rev R 69
Table 18. Troubleshooting/Fault Diagnosis
Operation
Signal/
Other
Symptoms
Possible Cause Corrective Action
POWER switch
from OFF to ON
LAMP
OFF/RESET
button does
not light at
power up
Fuses F1 and F2 Check fuse and replace if blown.
Power supply wiring If fuse immediately blows again, replace
fuses. Then: A. Disconnect P104 on back
of power supply, P10 from the irradiator,
and P20 at the RF detector. Press
STANDBY LAMP CONTROL button. If
fuse does not blow, proceed to (B). If the
fuse blows, the problem is in the internal
wiring or control card.
Control card Replace control card.
Irradiator cable B. Turn OFF. Reconnect P104. Press
STANDBY. If the fuse does not blow,
proceed to (C). If the fuse blows, the
problem is in the connectors or cable.
RF detector C. Turn OFF. Reconnect P20 at the RF
detector. Press STANDBY. If fuse does not
blow, proceed to (D). If the fuse blows, the
problem is in the RF detectors or cable.
Filament
transformer
D. Turn OFF. Reconnect P10 to the
irradiator. Press STANDBY. If the fuse
blows, the problem is in the filament
transformer or connections.
Master turns
slaves ON but
not OFF
Programming error Close S1-1 (YES) on master.
RF INTLK
indicator lights
on slave with
slave OFF,
master ON
Cable connection Connect cable H760 to slave.
RF INTLK
indicator lights
on all units
Programming error Close S1-5 (YES) on master.
System shuts
down; no fault
indicators light
Momentary loss of
AC
Turn off all units and then turn each unit
on. A momentary loss of power to one or
more units may be interpreted as a system
fault.