Barco DP2K-12C, Service Manual

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17. Lamp power supply
17.1 Introduction
Functionality of the Lamp Power Supply
The front side of the LPS casing contains the input/output connectors and diagnostic LED’s of the LPS unit. The rear side is equipped
with fans. The whole LPS module slides into the LPS compartment at the rear bottom of the projector and can be replaced easily.
To ignite the lamp the voltage on the output pins of the LPS unit is brought up to 140 volt. This high voltage will trigger the Start
Pulse Generator (SPG) to ignite the lamp. Once the lamp is ignited the voltage on the output pins of the LPS unit is dropped to the
typical arc voltage of the lamp.
Parts
A
B
G
C D
K L I
E
A
A
A
LAMP OUT
MAINS
INPUT
LPS UNIT 1
LPS MODULE
F H J
Image 17-1
A Captive screw. G Status LEDs: “ERR”, “PFC OK” & “LPS OK”.
B Lamp output pin “–”. H Socket for “CTRL OUT” cable - DP2K series.
C Lamp output pin “+”. I Socket for “ADDRESS” cable.
D Status LEDs: “LAMP ON / LVPS OK”. J Socket for CTRL IN” cable - DP2K series
E Mains input. K Socket for “CTRL OUT” cable - not used in DP2K series.
F Status LEDs, left and middle LED for internal use,
right LED : heartbeat L Socket for CTRL IN” cable - not used in DP2K series
284 R5905043 DP2K-12C/11CX 19/02/2018