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74 F300S/F300SQ Ultraviolet Lamp System
Switch from
STANDBY to
ON
(continued)
LAMP OUT
indicator lights
after 8
seconds;
Lamp bulb
does not light
(continued)
Diodes, capacitors If the readings are not different, a power
supply fault is indicated. Disconnect all
power and inspect for wiring damage. Test
diodes and capacitors according to the
procedures in Chapter 6, “Maintenance”.
Irradiator Disconnect all power. Remove the
irradiator cover (see Chapter 6,
“Maintenance”). Inspect for obvious
damage to wiring. Inspect the reflector for
pitting near the large slots, which is
evidence of arcing.
Magnetron If no power supply fault can be found,
disconnect all power. Replace magnetron
(see Chapter 6, “Maintenance”).
WARNING: If no magnetron test voltage is measured at the magnetron test points,
remove power from the unit immediately. Consult Fusion UV Systems Technical
Services.
Table 18. Troubleshooting/Fault Diagnosis (continued)
Operation
Signal/
Other
Symptoms
Possible Cause Corrective Action