Fusion F300S, F300SQ manual 74

Table 18. Troubleshooting/Fault Diagnosis (continued)

	Signal/
Operation	Other	Possible Cause	Corrective Action
	Symptoms
Switch from	LAMP OUT	Diodes, capacitors	If the readings are not different, a power
STANDBY to	indicator lights		supply fault is indicated. Disconnect all
ON	after 8		power and inspect for wiring damage. Test
(continued)	seconds;		diodes and capacitors according to the
	Lamp bulb		procedures in Chapter 6, “Maintenance”.
	does not light
		Irradiator	Disconnect all power. Remove the
	(continued)
			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.

74F300S/F300SQ Ultraviolet Lamp System