Mitsubishi WS-A65, WS-A55, VS-A50, WS-A48 Service Manual
MITSUBISHI ELECTRIC
Service
Manual
PROJECTION TELEVISION
V20B CHASSIS
V20B
MODELS
WS-A48
VS-A50
WS-A55
WS-A65
20022002
2002
20022002
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
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 - FRONT / CONTROL / CRTs / PREAMP ........... 10
PCB-2HDW-1 (Input)..................................................... 11
PCB-2HDW-2 (Main) ................................................... 12
PCB-2HDW-3 (Output)................................................. 13
Refer to PART 1 for:
• Specifications
• Safety Precautions
• Disassembly
• CRT Replacement
• Electrical Adjustments
• Parts List
• Block Diagrams
PCB LAYOUT DIAGRAMS ......................................... 14
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2002 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
GROUP MODEL
1 WS-55311, WS-A55, WS-65311, WS-A65
2 WS-55411, WS-65411
3 VS-50111, VS-A50
4 VS-60111
5 WS-73411
6 WS-48311, WS-A48
MODELS C5A37 C5A38 R5A36 C5A31 C5A32 R4B10 R4B12 R3E15 R3E16 L5A22
WS-48311, WS-A48,
WS-55311, WS-A55
VS-50111, VS- A50,
VS-60111
WS-65311, WS-A65,
WS-55411
WS-73411
250V .27 MPP 250V .27 MPP 5.6k 3W
250V .33 MPP 250V .33 MPP 5.6k 3W
3300
1800VHP
3300
1800VHP
3900
1800VHP
3900
1800VHP
3300
1800VHP
3300
1800VHP
3900
1800VHP
3900
1800VHP
2.2 2W 2.2 2W 6.8k 6.8k 059-20
1.8 2W 1.8 2W 10k 10k 059-20
2.2 2W 2.2 2W 6.8k 6.8k 059-20
2.2 2W 2.2 2W 6.8k 6.8k 059-20
GROUP MODEL
1 WS-55311, WS-A55, WS-65311, WS-A65
2 WS-55411, WS-65411
3 VS-50111, VS-A50
4 VS-60111
5 WS-73411
6 WS-48311, WS-A48
MODELS J12V J17V R5A68 R5A69 R5A70 D5A60 R8P05 R8P06
WS-483 11, WS-A48,
WS-553 11, WS-A55
VS-50111, VS-A50,
VS-60111
WS-653 11, WS-A65,
WS-55411
WS-73411 X O F-2.0K F-560 F-2.4K RD9.1EB1,B2 220 1K
X O F-2.7K F-680 F-3.3K RD13EB2 220 220
O X F-2.7K F-680 F-3.3K RD13EB2 220 470
X O F-2.7K F-680 F-3.3K RD13EB2 220 220
GROUP MODEL
1 WS-55311, WS-A55, WS-65311, WS-A65
2 WS-55411, WS-65411
3 VS-50111, VS-A50
4 VS-60111
5 WS-73411
6 WS-48311, WS-A48
GROUP MODEL
1 WS-55311, WS-A55, WS-65311, WS-A65
2 WS-55411, WS-65411
3 VS-50111, VS-A50
4 VS-60111
5 WS-73411
6 WS-48311, WS-A48
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