Mitsubishi Electric WT-42311 User manual

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2002 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHI ELECTRIC
Service
Manual
20022002
20022002
2002
PROJECTION TELEVISION
VK20 CHASSIS
WT-42311
WT-A42
PART 2
SCHEMATIC DIAGRAMS
CONTENTS Page
Schematic Diagrams
Overall PCB Block Diagram ..................................................... 1
PCB-MAIN................................................................................ 2
PCB-POWER ........................................................................... 3
PCB-TERMINAL (Input Switch) ............................................... 4
PCB-TERMINAL (3DYC / Decoders) ....................................... 5
PCB-SIGNAL-1 (AV I/O) ........................................................... 6
PCB-SIGNAL-2 (MICRO) ......................................................... 7
PCB-SIGNAL-3 (VCJ) .............................................................. 8
PCB-SIGNAL-4 (Convergence Generator) ............................... 9
PCBs - CONTROL / CRTs / DBF / PREAMP / SVM / UNI ..... 10
PCB-DOUBLER-1 (Input) ....................................................... 11
PCB-DOUBLER-2 (Main) ....................................................... 12
PCB-DOUBLER-3 (Output) .................................................... 13
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" in Part 1 of this manual.

WT-42311 WT-A42
R7A39 Not Used 0 Ω