Table 18. Troubleshooting/Fault Diagnosis

 

Signal/

 

 

Operation

Other

Possible Cause

Corrective Action

 

Symptoms

 

 

 

 

 

 

 

 

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

POWER switch

LAMP

 

fuse does not blow, proceed to (B). If the

 

fuse blows, the problem is in the internal

from OFF to ON

OFF/RESET

 

 

wiring or control card.

 

button does

 

 

 

 

 

not light at

Control card

Replace control card.

 

power up

 

 

 

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

D. Turn OFF. Reconnect P10 to the

 

 

transformer

irradiator. Press STANDBY. If the fuse

 

 

 

blows, the problem is in the filament

 

 

 

transformer or connections.

 

 

 

 

 

Master turns

Programming error

Close S1-1 (YES) on master.

 

slaves ON but

 

 

 

not OFF

 

 

 

 

 

 

 

RF INTLK

Cable connection

Connect cable H760 to slave.

 

indicator lights

 

 

 

on slave with

 

 

 

slave OFF,

 

 

 

master ON

 

 

 

 

 

 

 

RF INTLK

Programming error

Close S1-5 (YES) on master.

 

indicator lights

 

 

 

on all units

 

 

 

 

 

 

 

System shuts

Momentary loss of

Turn off all units and then turn each unit

 

down; no fault

AC

on. A momentary loss of power to one or

 

indicators light

 

more units may be interpreted as a system

 

 

 

fault.

 

 

 

 

Installation, Operation, and Maintenance Manual # 509252 Rev R

69