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V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
MJ10005
TRANSISTORS
INSULATOR
IRF450
TRANSISTOR
6-32X9/16"PPZ
SCREW
HSEXP2
TO-3
Figure 3-37. APS MJ10005 Transistors and IRF450 FET Removal and Replacement
b. Disconnect FAST-ON receptacles from leads on toroid
choke.
c. Disconnect spade terminal from center lead on toroid
choke.
d. Disconnect six-pin MATE-N-LOK connector.
e. Slide out heat sink assembly from power supply chassis.
Step 5.
Remove transistor or FET.
a. At faulty MJ10005 transistor or IRF450 FET, remove two
6-32x9/16"PFZ screws that secure transistor to heat sink
and remove transistor or FET and TO-3 insulator.
Step 6.
Install replacement transistor or FET.
a. At rear of replacement transistor or FET, apply new TO-3
insulator.
b. Replace transistor or FET and reassemble luminaire by
doing Steps 2 through 5 in reverse.