
13-10
94MS36 Rev. F2 S/W Ver 2.06
Trigger Board
A trigger board is provided in the light head to start the lamp. This board
operates on demand by sensing the lamp voltage. This board can be heard
when it is functioning, although the sound is faint. By turning the unit on
and off, the sound can be compared during trigger and cool-down. In
both situations, the fans are running full speed. The fans may be disabled
by pulling the blue wire from terminal #5 to aid in determining if the
trigger board is functioning. Use caution that the lamp doesn’t run without
cooling.
The trigger board is located in the lamp head, in the end where the cable
enters. It is located in the cool air path inside the air plenum. One lamp
lead is in series with the trigger transformer [(1) input (3) output], the
other lamp lead (2) is used to sense the lamp voltage. Outside the unit,
the board can be tested by putting 350-750VAC between terminals [(1)
and (3)], and causing an arc from terminal (3) to terminal (1). This arc
should be .015 or greater.
TRIGGER BOARD #64TR408 for AL 54, AL 54-480 and AL 64
Lead to Lamp (3)
(High Temp Wire)
Lamp Current (1)
(Purple Wire)
Other Lamp Lead (2)
(Yellow Wire)
Lamp Current (1)
(Violet Wire)
Lead to Lamp (3)
(High Temp Wire)
Other Lamp Lead (2)
(Yellow Wire)
M2
M1
M3
TRIGGER BOARD #64MV414 FOR AL 84, AL 84-480 and AL 94