Figure 6-3. Interface/Relay Unit Circuit Board.
CAUTION
To avoid damage to the unit, disconnect all
red wires to the unit at the battery
before proceeding.
B.
Cover Removal.
See figure 6-4. Remove and retain the four
screws which secure the cover on the lightbar. Slide
the cover back slightly and carefully lift to remove.
C.
Printed Circuit Board Removal.
The Vision lightbar contains two (three if
optional SignalMaster is installed) circuit boards. See
figure 6-5.
To remove a circuit board, proceed as
follows:
1.
Remove and retain the fasteners which
secure the circuit board to the lightbar.
CAUTION
Unpredictable operation may result if motor
cables, or lamp driver cables, are mixed.
Before removing cables, mark the cables for
proper reconnection when reassembling.
WARNING
Failure to observe this warning
WILL
result
in severe instantaneous damage to the Vision
system.
The reverse polarity protection
WILL NOT
protect against reversed red (+) and black (-)
wires to individual circuit boards. Ensure
that all positive (red) and negative (black)
wires are properly reconnected when replac-
ing a circuit board.
2.
Disconnect wires and cables as appli-
cable.
3.
Repair or replace the circuit board as
required.
Figure 6-4. Lightbar Cover Removal.
6-3
Summary of Contents for VISION
Page 1: ...VISION WARNING SYSTEM HARDWARE INSTALLATION AND MAINTENANCE INSTRUCTIONS Price 15 00...
Page 2: ......
Page 23: ...6 7 Figure 6 8 Bar Control Printed Circuit Board Figure 6 9 Lamp Driver Printed Circuit Board...
Page 24: ...6 8 Figure 6 10 SignalMaster Printed Circuit Board 255247C REV C 1093 Printed in U S A...
