Fusion F300S, F300SQ manual 71

Table 18. Troubleshooting/Fault Diagnosis (continued)

	Signal/
Operation	Other	Possible Cause	Corrective Action
	Symptoms
	BLWR	Single-phase	See “Basic Checks” on page 65.
	PRESSURE	voltage missing
	indicator lights	phase
		Air pressure	Measure air pressure inside irradiator
			following the procedure described in
			Chapter 6, “Maintenance”. IF PRESSURE
			IS LOW:
		Dirty air filters	Replace dirty air filter on remote or
			modular blower.
		Pressure switch	Replace the pressure switch.
		faulty
		Air handling design	Check for adequate air handling
Switch from			requirements.
	STANDBY	HV cable	Connect HV cable.
OFF to
STANDBY	switch does	disconnected
	not light
	No fault	Faulty HV cable	Inspect cable, check for continuity.
	indicators light.
		Control card	Replace control card.
	LAMP OUT	Card connectors not	Check control card. All connectors must be
	and/or PWR	secure	properly secured.
	IMBAL
		Control card	Replace control card.
	indicators light
	immediately
	RF INTLK	No RF detector	Connect RF detector. A system must have
	indicator lights	connected	at least one RF detector connected.
	or flashes
		Programming error:	1. Close S1-5 on unit with RF detector
	alternately with
		1. All units have	connected.
	the lamp
		S1-5 open.
	control
		2. Unit(s) with S1-5	2. Install jumper.
	switches
		open and no jumper
		between J105A-3
		and J105A-4.
		RF cable shorted or	Check cable for continuity.
		open
		RF detector faulty	Replace RF detector.
		Control card	Replace control card.

Installation, Operation, and Maintenance Manual # 509252 Rev R 71