Mitsubishi Electric WS-A55 Manuals

Manuals and User Guides for Mitsubishi Electric WS-A55. We have 1 Mitsubishi Electric WS-A55 manual available for free PDF download: Service Manual

Mitsubishi Electric WS-A55 Service Manual

Mitsubishi Electric WS-A55 Service Manual (66 pages)

PROJECTION TELEVISION V20B CHASSIS

Brand: Mitsubishi Electric | Category: Projection TV | Size: 1.39 MB

Table of Contents

SCHEMATIC DIAGRAMS Overall Block Diagram

1
- Pcb-Main
  2
- Table of Contents
  3
- Pcb-Power
  3
- PCB-TERMINAL (Input Sw)
  4
Introduction

5
Product Safety Notice

5
- PCB-TERMINAL (3DYC / Decoders)
  5
Safety Precautions

6
- Pcb-Signal-1 (Av I.o)
  6
Cabinet Disassembly

7
Servicing the Lenticular Screen and Fresnel Lens

11
- Lenticular Screen and Fresnel Lens Removal
  
  11
  - Vs-A50 / Ws-A55 / Ws-A65
    11
  - PCB-2HDW-1 (Input)
    11
    
    Ws-A48
    12
  - PCB-2HDW-2) (Main)
    12
- Lenticular Screen and Fresnel Lens Installation
  
  13
  - PCB-2HDW-3 (Output)
    13
Cabinet Separation

14
- Ws-A65
  14
Pcb Layout Diagrams

14
Servicing the Diamondshield

15
- Diamondshield TM Removal & Installation
  15
SERVICING Pcbs

16
- Chassis Removal
  16
- PCB Locations
  16
- Main Components Location
  16
- Second Anode Lead Removal
  17
Crt Replacement

17
- CRT Removal
  17
- CRT Installation
  18
Electrical Adjustments

20
- Test Equipment
  20
- Initial Setup
  21
- LED Indicator Diagnostics
  22
- Circuit Adjustment Mode
  23
- Convergence Adjustment Mode
  24
- Adjustment Items List
  26
- Adjustment Test Points
  29
- Adjustment Procedures High Voltage Regulation
  30
  - Main/Sub y Level
    30
  - Main/Sub Color Level
    31
  - CRT Cutoff
    31
  - White Balance (NTSC)
    32
  - White Balance (HD)
    32
  - Black Level
    33
  - Sub Contrast
    33
  - Dynamic Focus Preset
    34
  - Lens Focus
    34
  - Electrostatic Focus & Alignment Magnet Adjustment
    35
  - On Screen Display Character Position
    35
  - Deflection/Convergence Geometry Presets
    36
  - Deflection Circuit Geometry Adjustments
    37
  - Convergence Circuit Geometry Adjustments
    38
  - Centering and Static Convergence
    39
  - Coarse Convergence Adjustments
    40
  - Fine Convergence Adjustments
    41
Chip Parts Replacement

42
Replacement Parts

43
- Parts Ordering
  43
- Critical and Warranty Parts Designation
  43
- Parts Tolerance Codes
  43
- Replacement Part Notes
  43
  - When Replacing the RF-Switch or PCB-SIGNAL
    43
  - When Replacing the EEPROM
    43
- Quick Reference List
  44
- Service Parts List
  45
- Screen Parts List
  56
Circuitry Block Diagrams

58
- Power Supply
  58
- Video / Color Signal Path
  59
- Sync Signal Path
  60
- Deflection / HV
  61
- X-Ray Protect
  62
- HV Regulation
  63
- Sound Signal Path
  64
- Convergence
  65
- Control Circuitry
  66

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