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3-94
V
ARI
*L
ITE®
-
VL4
W
ASH
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9628.0010
7-Oct-97
3.3.5.9
APS Control PCB Resistor/Diode Removal and
Replacement (
Shop Only)
Parts:
1 EA
DIODE, FAST, MR856, 600V 3A (82.4304.0856)
1 EA
DIODE, ZENER TS, 1.5KE200 200V, 5W (82.5301.0303)
1 EA
DIODE, ZENER, 1N4742 12V 1W (82.5304.4742)
1 EA
RES, 1W 5%, 4.7OHM, MET OXIDE (60.3430.0047)
Tools:
Screwdriver, Phillips #2
Screwdriver, Phillips #1
Soldering iron
Solder sucker
Solder, regular
To remove and replace APS switch PCB diodes or resistors:
Step 1.
Remove power to luminaire.
Step 2.
Remove power supply (Figure 3-27).
Step 3.
Separate heatshrink from power supply chassis.
a. At power supply control PCB, remove four 6-32x3/4"PPZ
screws that secure heatsink assembly to power supply
chassis.
b. Gently pry apart sides of power supply chassis and remove
heatsink.
Step 4.
Replace faulty resistor or diode.
a. Locate resistor or diode to be replaced (Figure 3-36).
b. Unsolder faulty resistor or diode.
FAST DIODE
MR856
ZENER DIODES
1.5 KE 200A
RESISTORS
ZENER DIODE
IN4742
Figure 3-36. APS Control PCB Diodes and Resistor Removal and Replacement
Step 5.
Replace resistor or diode by doing Steps 2 thru 4 in reverse.
Содержание VL4
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