VARILITE VL4 - Yoke Cables Maintenance; Yoke Cables and Lamp Wire Removal and Replacement

C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-103
02.9628.0010 CONFIDENTIAL
7-Oct-97
3.3.6 Yoke Cables Maintenance
3.3.6.1 Yoke Cables and Lamp Wire Removal and
Replacement
Parts
:
1 EA CABLE ASSY, YOKE "A", 38" (VL4) (25.9628.0145)
1 EA CABLE ASSY, YOKE "B", 41" (VL4) (25.9628.0147)
1 EA LAMP WIRE ASSY, A & B (VL4) (25.9628.0149)
Tools
:
Screwdriver, Phillips #1
Screwdriver, Phillips #2
Tape
Cable tie, long length
Nutdriver, 5/16 inch
Diagonal cutters
To remove and replace either yoke cable:
Step 1. Remove power to luminaires.
Step 2. Remove 12, 6-32x5/16"PPB screws that secure head covers to
rails and remove both head covers (
Figure 3-1
).
Step 3. At yoke termination PCB, disconnect all connectors.
a. 4-pin connector from AMBER header marked YTB-P9.
b. 8-pin connector from AMBER header marked YTB-P8.
c. 4-pin connector from BLUE header marked YTB-P7.
d. 8-pin connector from BLUE header marked YTB-P6.
e. 4-pin connector from MAG header marked YTB-P11.
f. 8-pin connector from MAG header marked YTB-P10.
g. 4-pin connector from DOUSER header marked YTB-P5.
h. 5-pin connector from TILT header marked YTB-P3.
j. 4-pin connector from TILT header marked YTB-P4.
k. 4-pin connector from DIM header marked YTB-P13.
m. 8-pin connector from DIM header marked YTB-P12.
n. 4-pin connector from DIFF header marked YTB-P15.
o. 8-pin connector from DIFF header marked YTB-P14.
p. 8-pin connector from FOCUS header marked TB-P16.