3-94
V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
3.3.10 Transformer Assembly Removal and Replacement
Parts:
1 EA
ASSY, TRANSFORMER (22.1009.0001)
Tools:
Screwdriver, Phillips #2
Wrench, 11/32 inch, open end
To remove and replace transformer assembly (Figure 3-28):
6-32X3/8"PPB SCREW
#6 INTERNAL TOOTH
LOCK WASHER
8-32 KEPS NUT
BRIDGE
RECTIFIER
8-32X1"PPB SCREW
8-32X1/2"PPB SCREW
XFRMREXP1
TRANSFORMER
ASSEMBLY
Figure 3-28. Transformer Assembly Removal and Replacement
WARNING: Stored charge in capacitors can cause electrical shock. Care
should be taken when power is applied to luminaire and for 10 minutes
after removing power from the luminaire. Always use caution when
working near capacitors.
Step 1.
Remove power to luminaire.
Step 2.
Open chassis lid.
a. At electronics chassis, remove six 10-32x3/8"PPB screws
that secure chassis lid to chassis and open chassis lid.
Step 3.
Disconnect transformer connectors.
a. At electronics chassis, remove Arc Power Supply. Refer to
maintenance paragraph Arc Power Supply Maintenance.
b. At voltage selector board, disconnect nine-position MATE-
N-LOK connector.
c. At card cage, remove low voltage supply board.
d. At card cage motherboard, disconnect six-position MATE-
N-LOK connector.
e. VL2C only. At DC/DC PCB, remove 4 pin MTA
connector.
