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Mitsubishi Electric WS-48511 Service Manual

Projection television v21, v21+, v21++ chassis
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MITSUBISHI ELECTRIC
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
• Power Input
: AC 120V, 60Hz
• Power Usage
: 275W (All but WS-73711)
• Frequency Range
: VHF 54 ~ 470MHz
• Antenna Input
: VHF/UHF 75Ω unbalanced
• CRT Size
: [7 inches]
: [9 inches] WS-73711 only
• High Voltage
: 32.0kV (at 0A)
• Cabinet Weight and Demensions
Model
Weight
WS-48511 175.5 lbs.
WS-55511 238 lbs.
WS-55711 266 lbs.
WS-65511 337 lbs.
WS-65611 336.5 lbs
WS-65711
356 lbs
WS-65712 251 lbs.
WS-73711
410 lbs
WS-B55
238 lbs.
• Weight and dimensions shown are approximate.
• Design specifications are subject to change without notice.
• AC-3® is a registered trademark of Dolby Laboratories, Inc.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
Copyright © 2002 Mitsubishi Digital Electronics America, Inc.
WS-65611
SPECIFICATIONS
300W (WS-73711 only)
UHF 470 ~ 806MHz
2 - NTSC
1 - ATV/QAM
Height Width Depth
49"
44.5"
24"
50.3"
50.6"
28"
50.3"
50"
28"
61.9"
59"
28.1"
61.9"
59"
28.1"
61.6"
58.2"
28"
61.7"
58.2"
28.4"
65.7"
65.2"
30"
50.3"
50.6"
28"
9351 Jeronimo Road, Irvine, CA 92618-1904
All Rights Reserved
Service
Manual
PROJECTION TELEVISION
V21 / V21+ / V21++ CHASSIS
V21
MODELS
MODELS
WS-48511
WS-65611
WS-55511
WS-65511
WS-B55
• Speakers (8 Ohms 10W)
[WS-48511]
[WS-B55 / WS-55511 / WS-65511 / WS-65611]
[WS-55711 / WS-65711 / WS-73711]
[WS-65712]
• Input Level
• Output Level
• Digital Interface
V21++
V21+
MODELS
WS-55711
WS-65711
WS-65712
WS-73711
: 2 - 5" round
: 2 - 6" round
: 2 - 6.5" round, 2 - 3" tweeters
: 2 - 7" oval, 2 - 3" tweeters
: VIDEO IN JACK (RCA Type)
1.0Vp-p 75Ω unbalanced
: AUDIO IN JACK (RCA Type)
-4.7dBm 43kΩ unbalanced
: S-VIDEO IN JACK
(Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST)
75Ω unbalanced
: COMP / Y, Cr, Cb (RCA Type)
Y: 1.0 Vp-p Cr, Cb: 700mVp-p
: ATV / Y(G), Pr(R), Pb(B), H, V
Y: 1.0Vp-p with sync 75Ω (BNC)
Pr, Pb: 700mV 75Ω
H, V: 3.0Vp-p 75Ω
: VGA / R,G,B,V,H (15 pin D)
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75Ω unbalanced
: AUDIO OUT JACK (RCA Type)
-4.7dBm 4.7kΩ unbalanced
: IEEE-1394 I/O Jacks
: AC-3® Digtal Audio Output
2002
2002
2002
2002
2002
Table of Contents
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Related Manuals for Mitsubishi Electric WS-48511

Summary of Contents for Mitsubishi Electric WS-48511

  • Page 1: Schematic Diagrams Overall Block Diagram

    • Cabinet Weight and Demensions Y: 1.0 Vp-p Cr, Cb: 700mVp-p Model Weight Height Width Depth : ATV / Y(G), Pr(R), Pb(B), H, V WS-48511 175.5 lbs. 49" 44.5" 24" Y: 1.0Vp-p with sync 75Ω (BNC) Pr, Pb: 700mV 75Ω...

  • Page 3: Table Of Contents

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CONTENTS INTRODUCTION ..........................5 PRODUCT SAFETY NOTICE ......................5 SAFETY PRECAUTIONS ........................6 DISASSEMBLY WS-48511 Cabinet Front Disassembly .................... 7 WS-48511 Cabinet Rear Disassembly .................... 8 WS-B55 / WS-55511 / WS-65511 Cabinet Front Disassembly ............

  • Page 4: Pcb-Terminal

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CRT Cutoff ........................... 41 White Balance (NTSC) ......................41 White Balance (HD) ......................42 Cb, Cr Offset ........................42 Black Level .......................... 43 Sub Contrast ........................

  • Page 5: Introduction

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 INTRODUCTION This service manual provides service instructions for the V21, V21+ and V21++ PTV chassis types. The specific models for each chassis type are listed below. Service personnel should read this manual thoroughly before servicing these chassis.

  • Page 6: Safety Precautions

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SAFETY PRECAUTIONS NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the receiver chassis. WARNING: Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies.

  • Page 7: Ws-48511 Cabinet Front Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (FRONT VIEW) WS-48511 *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. Remove the Speaker Grille by pulling forward.

  • Page 8: Ws-48511 Cabinet Rear Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (REAR VIEW) WS-48511 *Refer to the Parts List for Part Numbers Rear Cabinet Disassembly 1. Remove the Back Board by removing screws (a)and (b)).

  • Page 9: Ws-B55 / Ws-55511 / Ws-65511 Cabinet Front Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (FRONT VIEW) WS-B55 / WS-55511 / WS-65511 *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. Remove the Speaker Grille by pulling forward.

  • Page 10: Ws-65611 Cabinet Front Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (FRONT VIEW) WS-65611 *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. Remove the Speaker Grille by pulling forward.

  • Page 11: Ws-55711 / Ws-65711 / Ws-73711 Cabinet Front Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (FRONT VIEW) WS-55711 / WS-65711 / WS-73711 *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. Remove the Speaker Grilles and Unit Front by pulling forward.

  • Page 12: Cabinet Rear Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (REAR VIEW) WS-B55 / WS-55511 / WS-65511 / WS-65611/ WS-55711 / WS-65711 / WS-73711 *Refer to the Parts List for Part Numbers Rear Cabinet Disassembly 1.

  • Page 13: Ws-65712 Cabinet Front Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (FRONT VIEW) WS-65712 *Refer to the Parts List for Part Numbers Front Cabinet Disassembly 1. Remove the Speaker Grille by pulling forward.

  • Page 14: Ws-65712 Cabinet Rear Disassembly

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET DISASSEMBLY (REAR VIEW) WS-65712 *Refer to the Parts List for Part Numbers Rear Cabinet Disassembly 1. Remove screws (a) and (b) holding the Back Board.

  • Page 15: Servicing The Lenticular Screen And Fresnel Lens

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun.

  • Page 16: Ws-B55 / Ws-55511 / Ws-65511

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun.

  • Page 17: Ws-55711 / Ws-65611 / Ws65711 / Ws-65712 / Ws-73711

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS CAUTION: Wear gloves when handling the Lenticular Screen and Fresnel Lens. This prevents cuts and finger prints. Do not place Fresnel Lens in the sun.

  • Page 18: Lenticular Screen And Fresnel Lens Installation

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS 2. Lenticular Screen and Fresnel Lens Installation. Note: Store the Lenticular Screen and Fresnel Lens in a cool dry place. High humidity may deform the Lenticular Screen and Fresnel Lens.

  • Page 19: Servicing The Diamondshields

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SERVICING THE DIAMONDSHIELD™ 1. DiamondShield™ Removal Procedure The location of the DiamondShield molding clips varies between models, top and bottom, or sides. Use the appropriate disassembly procedure given below.

  • Page 20: Cabinet Separation (65 And 73 Inch) Ws-65712

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET SEPARATION Mitsubishi 65 and 73 inch Projection TVs have been assembled in two pieces. These pieces may be separated for easier delivery and setup. The cabinet separation procedure requires two persons and varies between models.
  • Page 21 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CABINET SEPARATION PROCEDURE (WS-65511 / WS-65611 / WS-65711 / WS-73711) WS-65511 Cabinet Separation Precedure 1. Remove the Screen Assembly and disconnect all cable harnesses between the Frame Assem- bly and the PCB-SIGNAL, refer to Cabinet Front Disassembly.

  • Page 22: Chassis And Dm Module Removal

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Main Chassis Removal Chassis and DM Module Removal The chassis and DM Module can be removed as a single unit. 1. Undo the cable wire ties to the Front Panel, Speakers, CRTs, etc.

  • Page 23: Pcb Locations

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 PCB Locations Main Components Location Page 23...

  • Page 24: Dm Module Main Components Location

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 DM Module Main Components Location MODULE MODULATOR POWER SUPPLY TUNER FLASH CARD SLOT COVER Page 24...

  • Page 25: Crt Replacement

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CRT REPLACEMENT 1. Removal of the CRT Caution! High voltage should be completely discharged prior to CRT removal. Since The CRTs receive high voltage from the HV Block, discharge by shorting the open end of the respective high voltage cable to chassis ground.

  • Page 26: Crt Installation

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 2. Installation of the CRT Note: The replacement CRT is supplied as an assembly comprised of the CRT and the Inner Lens with the space between them filled with ethylene glycol. Care should be taken during handling and installation to prevent shock from disrupting the seal or alignment between the CRT and Inner Lens.
  • Page 27 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 2. Install the Deflection Yoke on the CRT neck. [Figure 5-7] 3. Install the Lens that was removed in steps 8 and 9 of Removal Of The CRT. [ Figures 5-1 and 5-2 ] a) Position the Lens so that the Label faces the direction shown in Figure 5-8.

  • Page 28: Electrical Adjustments

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 ELECTRICAL ADJUSTMENTS Note: Perform only the adjustments required. Do not attempt an alignment if proper equipment is not available. Test Equipment • Oscilloscope (Unless otherwise specified, use 10:1 probes) •...

  • Page 29: Initial Setup

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Initial Setup A. Option Menu Setup Follow the steps below for the initial set-up: (MENU-2-1-7-0) 1. Select the "MENU" display by pressing the "MENU" button once.

  • Page 30: Led Indicator Diagnostics

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 C. A/V Memory Each of the external inputs has its’ own Audio/Video Memory. A change in an A/V setting at a specific input is stored in memory for that specific input.

  • Page 31: Circuit Adjustment Mode

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Circuit Adjustment Mode Most of the adjustments can only be performed using the remote hand unit. Many of the adjustments must be performed in both the 480i and 1080i modes.

  • Page 32: On Screen Display Position Adjustment Mode

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 E. Terminating the Circuit Adjustment Mode Press the “MENU” button on the remote hand unit twice to terminate the adjustment mode. Note: The circuit adjustment mode can also be terminated by turning power OFF.
  • Page 33 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 E. COARSE CONV (Press 5) There are four Sub Functions in the Coarse mode, COARSE GREEN, COARSE RED, COARSE BLUE and •...

  • Page 34: E2Prom Replacement

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 E2PROM Replacement IC7A01 stores some adjustment data. After replacing the IC, set the data to the values given in the following tables. If good performance is not obtained, perform the Adjustments Procedures given in the Notes column.
  • Page 35 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 MNTS Function (Main Decoder) IC2E00 Function Display Adjustment Data Initial Data Notes Item # Abbrev. Description Range Non RF TNTM Main Tint...
  • Page 36 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CONV GREEN Items (MENU-2-1-5-9-5) 48" Data 55" Data 65" Data 73" Data No. Abbrev. Description Name HSTA* Horizontal Position VSTA* Vertical Position...

  • Page 37: Adjustment Test Points

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Adjustment Test Point Location Test Points DT pin 3 - HV Adjust DT pin 6 - Ground DT pin 7 - 12 Volts...

  • Page 38: Adjustment Procedures

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: Check the input signal level to the MCS circuit [Audio Circuit] Symptom: Distorted sound during a stereo broadcast. 1. MCS Input Level...

  • Page 39: High Voltage Regulation

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: To set the CRT Anode voltage. [HV Circuit] Dark Picture Symptom: 3. HV Regulation Measuring DC Voltmeter Note: This adjustment must be rechecked following Adjustment 9 CRT Cutoff.

  • Page 40: Side By Side Sub Picture Tint

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: To match the sub picture color to that of the main picture. [Video Circuit] Symptom: 5. Side by Side Sub Picture Tint Main and sub pictures colors differ.

  • Page 41: Crt Cutoff

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [CRT Circuit] Purpose: To set the cutoff point for all three CRTs. 7. CRT Cutoff Monochrome has a color tint, or incorrect brightness.

  • Page 42: White Balance (Hd)

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: [CRT Circuit] To set the CRTs white level in the HD mode. Symptom: 9. White Balance (HD) Monchrome pictures have a color tint.

  • Page 43: 11. Black Level

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: [Video Circuit] To set the black level of the picture. Excess or insufficient brightness. Symptom: 11. Black Level Measuring ----- 1. Supply a Monoscope signal to a Video Input.

  • Page 44: 13. Dynamic Focus Preset

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 Purpose: [Focus Circuit] To improve edge focus. Symptom: 13. Dynamic Focus Preset Poor focus at the edges of the screen. Measuring ----- Instrument 1.

  • Page 45: Electrostatic Focus & Alignment Magnet Adjustment

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [CRT Circuit] Purpose: To set electrostatic focus to the optimum point. Poor focus. 15. Electrostatic Focus & Symptom: (Alignment Magnet) Measuring ----- Instrument Note: This adjustment must be performed after the Sub Contrast adjustment.

  • Page 46: Deflection/Convergence Geometry Presets

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [Conv/Defl] To preset data controlling raster geometry Purpose: 17. Geometry Preset Raster distortion. Symptom: Measuring Note: This procedure is usually only necessary if an E2PROM is replaced in the TV...

  • Page 47: Deflection Circuit Geometry Adjustments

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73Y11 / WS-B55 [Deflection Circuit] Purpose: To set the height, width and linearity of the raster. 18: Deflection Geometry Symptom: Incorrect height, width and/or linearity.

  • Page 48: Convergence Circuit Geometry Adjustments

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [Convergence Circuit] To set the Convergence circuit geometry adjustments. Purpose: 19. Convergence Geometry Raster distortion at the top, bottom or sides of the picture.

  • Page 49: Centering And Static Convergence

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73Y11 / WS-B55 [Convergence Circuit] Purpose: To converge red, green and blue at the center of the screen 20. Centering and Static Symptom: Color edging over the entire picture.

  • Page 50: Coarse Convergence Adjustments

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [Convergence Circuit] To converge red and blue on green at the edges of the Purpose: screen. 21. Coarse Convergence Color edging at the top, bottom and sides of the screen.

  • Page 51: Fine Convergence Adjustments

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73Y11 / WS-B55 [Convergence Circuit] Purpose: To converge red, green and blue at the edges of the screen 22. Fine Convergence Symptom: Color edging at the edges of the picture.

  • Page 52: Chip Parts Replacement

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CHIP PARTS REPLACEMENT Some resistors, shorting jumpers (0 Ohm resistors), Chip Parts Removal (Transistors) ceramic capacitors, transistors and diodes are chip parts.

  • Page 53: Replacement Parts

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 REPLACEMENT PARTS Parts Ordering To expedite delivery of replacement parts orders, specify the following: Model Number/Serial Number Part Number and description Quantity Note: Unless complete information is supplied, delay in processing of orders will result.

  • Page 54: Quick Reference List

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 QUICK REFERENCE FOR COMMON REPLACEMENT PARTS CRT ASSEMBLIES MODEL ASSY-CRT-RED ASSY-CRT-RED ASSY-CRT-RED WS-48511 251C222010 251C222020 251C222030 WS-B55 251C221070 251C221080 251C221090 WS-55511 251C219040...

  • Page 55: Service Parts List

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 56 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 57 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 58 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 59 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 60 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 61 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 62 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 63 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 64 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 65 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 66 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 67 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 68 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 69 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...

  • Page 70: Screen Parts List

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 71 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 72 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...
  • Page 73 MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 [#] Model Legend: (1) WS-B55, (2) WS-48511, (3) WS-55511, (4) WS-55711, (5) WS-65511, (6) WS-65611, (7) WS-65711, (8) WS-65712, (9) WS-73711 Ref # Part # Part Name &...

  • Page 74: Standby Supplies Regulator

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 STANDBY SUPPLIES REGULATOR Page 74...

  • Page 75: Switched Supplies Regulator

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SWITCHED SUPPLIES REGULATOR Page 75...

  • Page 76: Dm Power Supply

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 POWER SUPPLY Page 76...

  • Page 77: Video/Color A/V Switch Circuit

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 VIDEO/COLOR A/V SWITCH CIRCUIT Page 77...

  • Page 78: Video / Color Signal Path

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 PCB-SIGNAL Y/C PATH Page 78...

  • Page 79: Sync Signal Path

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SYNC PATH Page 79...

  • Page 80: Deflection / Hv

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 DEFLECTION CIRCUIT X-RAY PROTECT Page 80...

  • Page 81: Sound Circuit

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 SOUND CIRCUIT Page 81...

  • Page 82: Convergence

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CONVERGENCE CIRCUIT Page 82...

  • Page 83: Control Circuitry

    MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55 CONTROL CIRCUIT Page 83...
  • Page 84 2002 2002 2002 2002 2002 Service MITSUBISHI ELECTRIC Manual PROJECTION TELEVISION V21 / V21+ / V21++ CHASSIS V21++ V21+ MODELS MODELS MODELS WS-48511 WS-55711 WS-65611 WS-55511 WS-65711 WS-65511 WS-65712 WS-B55 WS-73711 WS-65611 CAUTION: Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE"...

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