1-18
V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
Low Voltage Supply (LVS2)
The low voltage supply PCB provides DC voltage regulation for the
luminaire.
Motherboard PCB Assembly (MBD2)
The motherboard routes power to the luminaire electrical components.
Lamp Control Board (LCB)
The lamp control board controls various luminaire functions, communicates
with the console using the modem board, and stores cue data using the
upgrade board.
The lamp control board utilizes two EPROM devices to store instructions
for a power-up self-test procedure.
An on-board, 3.6 VDC battery provides back-up power to random access
memory devices during power fluctuations and times when AC input
power to luminaire is removed. A voltage detector signals the main lamp
control board to halt microprocessor operations during low-voltage
conditions.
Control Interface Board (CIB)
The CIB contains the circuitry to interface the microprocessor based
instructions with the following functional groups:
•
Stepper motor control ports
•
System timing control
•
Pan and tilt control
•
Shaft encoder interface
•
Sensor inputs.
Arc Power Supply (APS)
The arc power supply provides controlled square-wave current, ignition
voltage, and operating voltage required by the arc lamp. It consists of four
subassemblies: chassis assembly, control PCB, heatsink assembly, switch
PCB.
Low Voltage Supply (LVS)
The Low Voltage Supply PCB provides DC voltage regulation for the
luminaire.
