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NORMAL OPERATION
WHEN THE SWITCH in the main AC supply line to the xenon power supply is in the ON
position, and the 30 A. circuit breaker on the switching power supply is ON, the POWER light on the xenon
power supply will glow. The lamphouse and power supply blowers will start. NOTE: Early model Strong
Switching Power Supply blowers may not start until the LAMP switch has been closed.
OPERATION OF THE LAMPHOUSE BLOWERS will close the (2) air flow interlock switches
(intake and exhaust), and if the lamphouse door is closed and correctly secured, the control circuit to the LAMP
switch will be completed.
THE MODE SWITCH, located on the lamphouse instrument panel, should be in the "MAN."
(Manual) position. This enables ignition control from the instrument panel, and is the normal mode of spotlight
operation.
WHEN THE LAMP SWITCH is placed in the ON position, the AC control circuit in the
lamphouse will energize the power supply circuitry providing DC current to the igniter and bulb. If an early
model Strong switching type power supply is used, the power supply blowers will start at this point.
THERE WILL BE a distinctly audible high voltage arc ping at the igniter arc gap and across
the bulb electrodes. The bulb should ignite immediately after one or two of these high voltage pulses, and the
lamp current will adjust to the output setting of the xenon power supply. Multiple ignition pulses prior to bulb
ignition normally indicate a low DC output setting. See xenon power supply manual. A "warm" or aged xenon
bulb might also require multiple strikes.
TROUBLE SHOOTING
IF THE XENON BULB does not ignite, observe the following operational sequences for assis-
tance in locating and isolating the trouble area.
WHEN THE FAN(S) and the indicator light on the power supply are on, the AC circuit in the
power supply is trouble free up to the terminal block in the power supply.
AT THIS TIME, the lamphouse blowers should operate. If this does not occur, the trouble is
in the cover interlock switch, the access panel interlock switch, the blower motor, a loose connection, a broken
#2 or #4 lead, or a blown F1 seal blower fuse. Check the 1.5 A. fuse in the in-line fuseholder. CAUTION: To
prevent bulb ignition when checking the AC control circuit in the lamphouse, remove lead #10 from the igniter
terminal strip.
CHECK AT THIS TIME for 115 V.AC Control Voltage at the access door interlock switch
(wires 2 & 4), and the blower terminals (9 & 12). The door interlock switch must be manually actuated to
energize the blowers. Replace #10 lead before proceeding.
TROUBLE CHART
XG2/020
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