C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-117
02.9631.0010
CONFIDENTIAL
15 Jan 98
3.3.21
VL2C
DC-to-DC Converter PCB Removal and
Replacement
Parts:
1 EA
PCB ASSY, DC- DC CONVERTER (24.9623.0194)
Tools:
Screwdriver, Phillips #2
Nut driver, 3/8 inch
To remove and replace VL2C luminaire DC-to-DC converter PCB,
(Figure 3-41):
DC-DC CONVERTER
PCB ASSEMBLY
COMPONENT SIDE
DOWN
C1 (6300uf)
DCDCVIEW
+
-
Figure 3-41. VL2C Luminaire DC-to-DC Converter PCB 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 lid.
Step 3.
Remove DC-to-DC PCB assembly from capacitor terminals.
a. At DC-to-DC PCB, disconnect four-pin MTA100
connector.
b. Using 3/8 inch nut driver, remove two 10-32 KEPS nuts
from terminals of capacitor C1 (Figure 3-42).
