mitsubishi VS50111, VS60111, WS48311, WS55311, WS65311 Service Manual

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20022002

2002

20022002

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MITSUBISHI ELECTRIC

ManualManual

Manual

WS-55411 WS-65411 WS-73411

CAUTION:

Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in this manual.

ManualManual

PROJECTION TELEVISION V20A / V20C / V20C+ CHASSIS

V20A

MODELS

VS-50111 VS-60111

V20C

MODELS

WS-48311 WS-55311 WS-65311

V20C+

MODELS

WS-55411 WS-65411 WS-73411

SPECIFICATIONS

• Power : AC 120V, 60Hz

240W (Except WS-73411) 275W (WS-73411 Only)

• Frequency : VHF 54 ~ 470MHz Range UHF 470 ~ 806MHz

• Antenna Input : VHF/UHF 75Ω unbalanced

• CRT Size : [7 inches] all but WS-73411

: [9 inches] WS-73411 only

• High Voltage : 32.0kV (at 0A)

• Weight / Cabinet Demensions

Model Weight Height Width Depth VS-50111 200 lbs 50.3" 42.4" 23.6" VS-60111 263.5 lbs 60.8" 50.6" 29.2"

WS-48311 171.5 lbs 49" 44.5" 23" WS-55311 237 lbs 50" 50.6" 26.3" WS-55411 250 lbs 50.4" 50.6" 27.9" WS-65311 326.5 lbs 61.9" 59" 28.1" WS-65411 326.5 lbs 61.9" 59" 28.1" WS-73411 400 lbs 66.1" 66.1" 28.9"

• Speaker : [VS-50111 / VS-60111] Two 4" round, full range (8Ω 5W) : [WS-48311 / WS-55311 / WS-65311] Two 5" round, full range (8Ω 10W) : [WS-55411 / WS-65411 / WS-73411] Two 6" round, full range (8Ω 10W)

• Input Level : 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) 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 (RCA Type)

Pr, Pb: 700mV 75Ω H, V: 3.0Vp-p 75Ω

• Output Level : VIDEO OUT JACK (RCA Type)

1.0Vp-p 75Ω unbalanced : AUDIO OUT JACK (RCA

-4.7dBm 4.7kΩ unbalanced

Type)

• Weight and dimensions shown are approximate.

• Design specifications are subject to change without notice.

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Road, Irvine, CA 92618-1904

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CONTENTS

INTRODUCTION ................................................................................................................................5

PRODUCT SAFETY NOTICE ............................................................................................................. 5

SAFETY PRECAUTIONS ................................................................................................................... 6

CABINET DISASSEMBLY

WS-48311 (Front View) .......................................................................................................... 7

WS-48311 (Rear View) ........................................................................................................... 8

VS-50111 / VS-60111 / WS-55311 / WS-65311 (Front View) ................................................... 9

WS-55411 / WS-65411 / WS-73411 (Front View) ................................................................. 10

VS-50111 / VS-60111 / WS-55311 / WS-55411 /

WS-65311 / WS-65411 / WS-73411 (Rear View) .................................................................. 11

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS

Lenticular Screen and Fresnel Lens Removal......................................................................... 12

VS-50111 / VS-60111 / WS-55311 / WS-65311..................................................................... 12

WS-55411 / WS-65411 / WS-73411 ..................................................................................... 13

WS-48311 ............................................................................................................................ 14

Lenticular Screen and Fresnel Lens Installation .................................................................... 15

CABINET SEPARATION

WS-65311 / WS-65411 / WS-73411 ..................................................................................... 16

SERVICING THE DIAMONDSHIELDS

DiamondShield TM Removal & Installation ...................................................................................... 17

SERVICING PCBs

Chassis Removal .......................................................................................................................... 18

PCB Locations.............................................................................................................................. 18

Main Components Location ........................................................................................................... 18

Second Anode Lead Removal ....................................................................................................... 19

CRT REPLACEMENT

CRT Removal ................................................................................................................................19

CRT Installation ............................................................................................................................ 20

ELECTRICAL ADJUSTMENTS

Test Equipment ............................................................................................................................. 22

Initial Setup ................................................................................................................................... 23

LED Indicator Diagnostics ............................................................................................................. 24

Circuit Adjustment Mode............................................................................................................... 25

Convergence Adjustment Mode ..................................................................................................... 26

Adjustment Items List ................................................................................................................... 28

Adjustment Test Points ................................................................................................................. 31

Adjustment Procedures

High Voltage Regulation ....................................................................................................... 32

Main/Sub Y Level ................................................................................................................. 32

Main/Sub Color Level ........................................................................................................... 33

CRT Cutoff ........................................................................................................................... 33

White Balance (NTSC) ......................................................................................................... 34

White Balance (HD) ............................................................................................................. 34

Black Level .......................................................................................................................... 35

Sub Contrast ....................................................................................................................... 35

Page 3

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

Dynamic Focus Preset ........................................................................................................ 36

Lens Focus .......................................................................................................................... 36

Electrostatic Focus & Alignment Magnet Adjustment .......................................................... 37

On Screen Display Character Position ................................................................................. 37

Deflection/Convergence Geometry Presets .......................................................................... 38

Deflection Circuit Geometry Adjustments ............................................................................. 39

Convergence Circuit Geometry Adjustments ........................................................................ 40

Centering and Static Convergence ....................................................................................... 41

Coarse Convergence Adjustments ....................................................................................... 42

Fine Convergence Adjustments ............................................................................................ 43

CHIP PARTS REPLACEMENT ......................................................................................................... 44

REPLACEMENT PARTS

Parts Ordering .............................................................................................................................. 45

Critical and Warranty Parts Designation........................................................................................ 45

Parts Tolerance Codes .................................................................................................................. 45

Replacement Part Notes

When replacing the RF-Switch or PCB-SIGNAL ................................................................... 45

When replacing the EEPROM.............................................................................................. 45

Quick Reference List .................................................................................................................... 46

Service Parts List.......................................................................................................................... 47

Screen Parts List .......................................................................................................................... 58

CIRCUITRY BLOCK DIAGRAMS

Power Supply ............................................................................................................................... 61

Video / Color Signal Path .............................................................................................................. 62

Sync Signal Path .......................................................................................................................... 63

Deflection / HV.............................................................................................................................. 64

X-Ray Protect ............................................................................................................................... 65

HV Regulation ............................................................................................................................... 66

Sound Signal Path ........................................................................................................................ 67

Convergence ................................................................................................................................. 68

Control Circuitry ............................................................................................................................ 69

Section 2 .... Schematic Diagrams

SCHEMATIC DIAGRAMS

Overall Block Diagram ................................................................................................................... 1

PCB-MAIN ..................................................................................................................................... 2

PCB-POWER................................................................................................................................. 3

PCB-TERMINAL (Input Sw) ............................................................................................................. 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 / CRT / PREAMP ............................................................................. 10

PCB-2HDW-1 (Input) ..................................................................................................................... 11

PCB-2HDW-2) (Main) .................................................................................................................... 12

PCB-2HDW-3 (Output) .................................................................................................................. 13

PCB LAYOUT DIAGRAMS ............................................................................................................... 14

Page 4

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

INTRODUCTION

This service manual provides service instructions for the PTV Models listed below. Service personnel should read this manual thoroughly before servicing these chassis.

V20A Chassis V20C Chassis V20C+ Chassis

VS-50111 WS-48311 WS-55411 VS-60111 WS-55311 WS-65411

WS-65311 WS-73411

This service manual includes:

1. Assembly and disassembly instructions for the front and rear cabinet components.

2. Servicing of the Lenticular Screen and Fresnel Lens.

3. Servicing printed circuit boards (PCBs).

4. CRT replacement procedure.

5. Electrical adjustments.

6. Chip parts replacement procedures.

7. Circuit path diagrams.

The parts list section of this service manual includes:

1. Cabinet and screen parts.

2. Electrical parts.

Schematic and block diagrams of the above listed models are included in this service manual for better understanding of the circuitry. PCB drawings are also included for easy location of parts and test points.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in television receivers have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have special safety characteristics are identified in this service manual.

Electrical components having such features are identified by shading on the schematic diagram and by bold

type in the parts list of this service manual. The replacement for any safety part should be identical in value and characteristics.

Page 5

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SAFETY PRECAUTIONS

NOTICE: Observe all cautions and safety related notes located inside the receiver cabinet and on the

receiver chassis.

WARNING:

1. Operation of this receiver outside the cabinet or with the cover removed presents a shock hazard from the receiver's power supplies. Work on the receiver should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment.

2. Do not install, remove or handle the picture tubes in any manner unless shatterproof goggles are worn. People not so equipped should be kept away while the picture tube is being handled. Keep the picture tube away from the body while handling.

3. When service is required, observe the original lead dress. Extra precaution should be taken to assure correct lead dress in the high voltage area. Where a short-circuit has occurred, replace those components that indicate evidence of overheating.

X-Radiation warning

The surface of the cathode ray tubes (CRTs) may generate X-Radiation, so take proper precautions when servicing. It is recommended that a lead apron be used for shielding while handling the CRT. Use this method if possible.

When replacing the CRTs, use only the designated replacement part since it is a critical component with regard to X-Radiation. High voltage must be set as prescribed under the section titled Electrical Adjustments.

Leakage current check

Before returning the receiver to the customer, it is recommended that leakage current be measured according to the following methods.

1. Cold Check

With the alternating current (AC) plug removed from the AC source, place a jumper across the two AC plug

prongs. Connect one lead of an ohm meter to the AC plug and touch the other lead to each exposed metal part (i.e. antennas, handle bracket, metal cabinet, screw heads, metal overlay, control shafts, etc.), particularly any exposed metal part that has a return path to the chassis. The resistance of the exposed metal parts having a return path to the chassis should be a minimum of 1Mega Ohm. Any resistance below this value indicates an abnormal condition and requires corrective action.

2. Hot Check ...Use the circuit shown below to perform the hot check test.

1. Keep switch S1 open and connect the receiver to the measuring circuit. Immediately after

connection, and with the switching devices of the receiver in their operating positions, measure the leakage current for both positions of switch S2.

2. Close switch S1, energizing the receiver. Immediately after closing switch S1, and with the

switching devices of the receiver in their operating positions, measure the leakage current for both positions of switch S2. Repeat the current measurements of items 1 and 2 after the receiver has reached thermal stabilization. The leakage current must not exceed 0.5 milliampere (mA).

Page 6

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET DISASSEMBLY (FRONT VIEW)

WS-48311

*Refer to PARTS LIST for Part Numbers

Front Cabinet Disassembly

1. Remove the Speaker Grille by pulling forward.

2. Remove the Board-Front by removing screws "a".

3. Remove the Screen Assembly by removing screws "b". Disconnect all cable harnesses between the Screen Assembly and the PCB-Signal.

4. Lift the Screen Assembly and pull up and away from the cabinet as shown.

Page 7

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET DISASSEMBLY (REAR VIEW)

WS-48311

Rear Cabinet Disassembly

1. Remove the Back Board by removing screws "a", “b” and “c”.

2. Remove the Back Cover by removing screws "e".

3. Remove 4 screws "d" securing the Light Box Assembly.

4. Be certain that all cables and connectors between the Light Box Assembly and external items are disconnected (e.g. speaker plugs).

5. Slide the Light Box Assembly out of the cabinet.

Page 8

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET DISASSEMBLY (FRONT VIEW)

VS-50111 WS-55311 VS-60111 WS-65311

Front Cabinet Disassembly

1. Remove the Speaker Grille by pulling forward.

2. Remove the Front-Board by removing screws "a".

3. Remove the Screen Assembly by removing screws "b". Disconnect all cable harnesses between the Screen

Assembly and the PCB-Signal.

4. Lift the Screen Assembly and pull up and away from the cabinet as shown.

Page 9

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET DISASSEMBLY (FRONT VIEW)

WS-55411 WS-65411 WS-73411

Front Cabinet Disassembly

1. Remove the Speaker Grille by pulling forward.

2, Remove the Control Panel by removing screws “a”.

3. Remove the Board-Front by removing screws "b".

4. Remove the Screen Assembly by removing screws "c". Disconnect all cable harnesses between the Screen Assembly and the PCB-Signal.

4. Lift the Screen Assembly and pull up and away from the cabinet as shown.

Page 10

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET DISASSEMBLY (REAR VIEW)

VS-50111 WS-55311 WS-65411 VS-60111 WS-55411 WS-73411

WS-65311

Rear Cabinet Disassembly

1. Remove the Back Board by removing screws "a".

2. Remove the Board Slide by removing screws “b”.

3. Remove the two Board Shelves by removing screws “c”.

4. Remove 4 screws "d" securing the Light Box Assembly.

5. Be certain that all cables and connectors between the Light Box Assembly and external items are discon-

nected (e.g. speaker plugs).

6. Slide the Light Box Assembly out of the cabinet.

Page 11

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS

VS-50111 WS-55311 VS-60111 WS-65311

1. Removal of the Lenticular Screen and Fresnel Lens

CAUTION: Wear gloves when handling the Lenticular Screen and the Fresnel Lens.

This prevents cuts and finger prints. Do not place the Fresnel Lens in the sun. This may cause fire and heat related injuries.

1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.

2. Remove the Screen Holder by removing screws (a).

3. Slide the Lenticular Screen and Fresnel Lens from the Screen Frame.

Note: When separating the Lenticular Screen from the Fresnel Lens, use caution

while prying the Screen and Lens apart. Use a slot type screw driver, and remove the pressure sensitive, double sided tape.

Page 12

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS

WS-55411 WS-65411 WS-73411

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. This may cause fire and heat related injuries.

1b. Lenticular Screen and Fresnel Lens Removal

1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.

2. Remove the Screen Frame top section by removing 4 screws (a).

3. Carefully grasp the Lenticular Screen and Fresnel Lens combination and pull upward and out

of the Screen Frame Assembly.

Note: When separating the Lenticular Screen from the Fresnel Lens, use caution

while prying the Screen and Lens apart. Use a slot type screw drive, and remove the pressure sensitive double sided tape.

Page 13

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS

WS-48311

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. This may cause fire and heat related injuries.

1c. Lenticular Screen and Fresnel Lens Removal

1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.

2. Remove the Top, Bottom and Side Holder Screens..

3. Carefully lift the Lenticular Screen and Fresnel Lens combination from the Screen Frame Assembly.

Note: When separating the Lenticular Screen from the Fresnel Lens, use caution

while prying the Screen and Lens apart. Use a slot type screw drive, and remove the pressure sensitive double sided tape.

Page 14

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

2. Installation of the Lenticular Screen and Fresnel Lens

Note: Store the Lenticular Screen and Fresnel Lens in a cool dry place. High humidity may

deform the Lenticular Screen and Fresnel Lens.

1. Apply double coated tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens as shown in

2. Place the Fresnel Lens on top of the Lenticular Screen and apply pressure at the top edge to bond them together as shown in

3. Reverse the disassembly procedure for that model to install the screens in the screen frame.

To p

Figure 2-2

( * X ) inch

Double Sided Tape (Part# LENS-TAPE)

. Refer to

Table A

Figure 2-2

Fresnel Lens

and

Table B

for proper tape length.

To p

Fresnel Lens

Lenticular Screen

Bottom

Lenticular Screen

Figure 2-2

4:3 Aspect Models

Model

VS-50111 50" 40" VS-60111 60" 47.9"

Screen

Size

Tape

Length

Table A

16:9 Aspect Models

Model

WS-48311 48" 41.76 WS-55311 55" 47.85 WS-55411 55" 47.85 WS-65311 65" 56.55 WS-65411 65" 56.55 WS-73411 73" 63.51

Screen

Size

Tape

Length

Table B

Bottom

0.16 inch

Page 15

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

CABINET SEPARATION PROCEDURE

(WS-65311 / WS-65411 / WS-73411)

Models WS-65311, WS-65411 and WS-73411 cabinets are assembled in two pieces. These two pieces may be separated to allow easier delivery and setup.

WS-65311 Cabinet Separation Precedure

1. Remove the Screen Assembly and disconnect all cable harnesses between the Frame Assembly and the PCB-SIGNAL, refer to Cabinet Front Disassembly.

2. Remove the 4 screw covers “a”.

3. Remove 4 screws “b” securing the top and bottom cabinet sections .

4. Carefully lift the cabinet top and place it on the floor.

5. Place the cabinet bottom in the desired location.

6. Reverse the procedure and mount the cabinet top on the cabinet bottom.

7. Reinstall the the Screen Assembly and connect all cable harnesses between the Screen Assembly and the PCB-SIGNAL.

WS-65411 / WS-73411 Cabinet Separation Precedure

1. Remove the 4 screw covers “a”.

2. Remove 4 screws “b” securing the top and bottom cabinet sections .

3. Carefully lift the cabinet top and place it on the floor.

4. Place the cabinet bottom in the desired location.

5. Reverse the procedure and mount the cabinet top on the cabinet bottom.

WS-65311

Page 16

WS-65411 / WS-73411

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SERVICING THE DIAMONDSHIELD™

1. DiamondShield™ Removal Procedure

The location of the DiamondShieldTM molding clips may vary between models, top and bottom, or sides. Use the appropriate disassembly procedure given below.

Note:

Wear gloves when handling the DiamondShield™ to prevent finger prints.

Top & Bottom Molding Clips

1. Gently insert a small screwdriver between the DiamondShield™ and one end of the clip to pry the clip loose.

Side Molding Clips

1. Gently insert a small screwdriver between the DiamondShield™ and one end of the clip to pry the clip loose.

2. Remove both clips by pulling them toward you.

3. Carefully insert a small screwdriver into the gap at the top/center point of the Shield and pull the Shield slightly away from the unit. Place your hands at the points shown and gently bow the Shield toward you and remove from the unit. Then re-install the two clips.

2. DiamondShield™ Installation Procedure

*(See the Parts List for DiamondShield™ part numbers)

To install the DiamondShieldTM, reverse the above Removal Procedure.

2. Remove both clips by pulling them toward you.

3. Carefully insert a small screwdriver into the gap at the side/center point of the Shield and pull the Shield slightly away from the unit. Place your hands at the points shown and gently bow the Shield toward you and remove from the unit. Then re-install the two clips.

Page 17

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

SERVICING PCBs

Chassis Removal and PCB Locations

Chassis Removal

1) Remove screw “a” from the Main Chassis.

2) Raise the two chassis locks on the inner sides of the Lightbox Assembly and slide the chassis towards the rear.

Major Parts Locations

Page 18

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

ANODE LEAD REMOVAL

CAUTION: To prevent damage, the following procedure must be used when removing an

Anode Lead from the Flyback Transformer.

1) Push the Anode Lead down.

3) Carefully remove the Anode Lead

1. Removal of the CRT

Caution! High voltage should be completely discharged prior to CRT removal.

Since the CRTs receive high voltage from the Flyback transformer, discharge by shorting the open end of the respective high voltage cable to chassis ground.

from the Flyback Transformer.

CRT REPLACEMENT

2) While holding the lead down rotate the lead 90º counter clockwise.

Note: Refer to Cabinet Disassembly when performing steps 1 through 4.

1. Remove the Speaker Grille, Front Board, and Screen Assy.

2. Remove the Back Board.

3. Remove the Anode Lead Wire from the Flyback transformer. (Use the above procedure)

4. Remove the PCB-CRT.

5. Remove 4 hex-screws "a" retaining the Optical Unit. [Figure 5-1]

6. Remove 4 screws "b" retaining the Lens. Note: DO NOT loosen the RED screws. Doing so will break the seal between the

C-Element and the # 6 Lens, causing leakage of the CRT Coolant.

7. Remove 4 screws "c" retaining the CRT. [Figure 5-2]

8. Remove the Deflection Yoke from the neck of the CRT. [Figure 5-7]

Figure 5-1

Page 19

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

Note: The 4 spring-loaded screws shown

in Fig 5-2 and labeled as "DO NOT REMOVE", should not be loosened under any circumstance. Doing so will break the seal between the CRT and the CRT-Spacer, causing leakage of the CRT Coolant.

Figure 5-2

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. [Figure 5-3]

Figure 5-3

Figure 5-4

Page 20

Figure 5-5

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

1. Carefully position the replacement CRT and fasten in place using 4 screws "d". [Figure 5-5]

2. Install the Deflection Yoke on the CRT neck. [Figure 5-6]

3. Install the Lens that was removed in steps 5 and 6 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 5-7 b) Install the mounting screws. [Figure 5-1]

4. Install the PCB-CRT.

5. Insert the Optical Unit into the Light Box Assembly.

6. Insert the Anode Lead Wire into the Flyback Transformer.

7. Re-clamp the Lead Wire in its original position.

Figure 5-6

Figure 5-7

Adjustment procedures after replacing the CRT(s)

• CRT Cut Off / White Balance Adjustment

• Static Convergence Adjustment

• Dynamic Convergence Adjustment

Page 21

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

ELECTRICAL ADJUSTMENTS

Note: Perform only the adjustments required.

Do not attempt an alignment if proper equipment is not available.

1. Test Equipment

• Oscilloscope (Unless otherwise specified, use 10:1 probes)

• Signal Generator (both SD and HD capable)

• Frequency Counter

• Direct Current Voltmeter

Direct Current Power Supply

• Multiplex Audio Signal Generator

• Direct Current Ampere Meter

2. Test Signal

A. Monoscope Signal

Note: If you do not have

a monoscope signal source, connect the unit to a VCR and play a Monoscope *alignment tape. (* Part Number: 859C568060)

B. Color Bar Signal

Use the color bar signal shown below, unless otherwise specified in this manual.

100%

75%

40%

Monoscope Signal

Split-Field Color Bars (100% window)

Page 22

MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

3. Initial Setup

A. Option Menu Setup

Follow the steps below for the initial set-up:

1. Select the "MENU" display by pressing the "MENU" button once.

2. Press the number buttons "2", "2", "7", "0" in sequence to select the "OPTION MENU" display.

3. Press the "ADJUST" button to select "INITIAL."

4. Press "ENTER." NOTE: At this time channel 3 is automatically selected.

MENU-2-2-7-0

OPTION MENU

Initial Power Restore :OFF DTV Port :Auto Direct Key Mode :OFF

B. Default Settings

MAIN MENU DEFAULT SETTINGS

SETUP

Memorize channels ANT-A - Air Movie Rating PG A/V Memory Reset Ant-A Language (idioma) English TV Speakers (Internal) On Front Button Lock Off V-Chip Start Time 12:00AM Audio Output Variable

CLOCK

Clock Setting Auto Lock by Time Off TV Bass 0.5 Time Zone Eastern Lock Time N/A TV Treble 0.5 Daylight Savings Time Applies Unlock Time N/A TV Balance 0.5 Clock Time N/A TV Surround Off Set Day N/A Video Mute On TV Listen To Stereo

CAPTIONS

Closed Captions On if Mute CC Background Gray TV Contrast 1

CHANNEL EDIT

Antenna ANT-A Set Time 12:00PM TV Sharpness 0.5 Channel 3 Set Day Everyday TV Color 0.5 Memory Deleted Device Ant-A TV Tint 0.5 Name N/A Channel 3 TV Color Temp High SQV N/A TV Video Noise Standard

V-CHIP-LOCK

V-Chip Off TV VSM Sharpness On TV Rating TV-PG Magenta 0.5 FV- Fantasy Violence Allow Red 0.5 D-Sexual Dialog Allow Yellow 0.5 L-Adult Language Allow Green 0.5 S-Sexual Situations Allow Cyan 0.5 V-Violence Allow Blue 0.5

Programs Not Rated Allow

V-CHIP LOCK By Time

V-Chip Stop Time 12:00AM

ADVANCED FEATURES

Black Enhancement On TV Level Sound Off

TIMER

Timer Off TV Brightness 0.5

COLOR BALANCE

Auto Color Correction Off TV Film Mode (Auto) Off

MANUAL COLOR ADJUST.

AUDIO SETTINGS

VIDEO SETTINGS

TV Volume PIP Source PIP Position POP Position Format PIP/POP Format

AUDIO/VIDEO

0.3

Ant-A Ch 3

Lower Right

Right Half

Stretch

Side by Side

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MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

Items in the table below are set to following after Initalization.

AV Memory Initial Settings

A/V Memory

Contrast

Brightness Mid Mid Mid Mid

Sharpness

Color

Tint

Color Temp.

Video Noise

Image type

TV VSM

Sharpness

Bass Mid Mid Mid Mid

Treble

Balance Surround Listen To

Level Sound

Ant-A Ant-B

Max Max Max Max

Mid Mid Mid Mid Mid Mid Mid Mid Mid Mid Mid Mid

High High High High

Stnd. Stnd. Stnd. Stnd.

Video Video Video Video

On On On On

Mid Mid Mid Mid Mid Mid Mid Mid

Off Off Off Off

Stereo N/A N/A N/A

Off Off Off Off

DTV

NTSC

1/2/3

COMP.

1/2

4. LED Indicator Diagnostics

The “Power ON LED” provides an indication of the sets operation, and the possible cause of a malfunction.

A. Initial Control Circuitry Check

Immediately after the TV is connected to an AC power source:

• The LED flashes three times ... indicating the Microprocessor has initialized and is functioning

properly.

• If the LED does not flash ... the Microprocessor is NOT functioning.

B. Error Code Operational Check

Pressing the front panel “INPUT” and “MENU” buttons at the same time, and holding for 5 seconds, activates the Error Code Mode. The LED flashes denoting a two digit Error Code, or indicating no problem has occured since the last Initalization.

Note: The front panel buttons must be used, NOT those on the Remote Control.

• The number of flashes indicates the value of the MSD (tens digit) of the Error Code.

• The flashing then pauses for approximately 1/2 second.

• The LED then flashes indicating the value of the LSD (ones digit) of the Error Code.

• The Error Code is repeated a total of 5 times.

Example: If the Error Code is “24”, the LED will flash two times, pause, and then flash four times.

C. Error Codes

The Error Code designations indicating a malfunction, or no malfunction, are listed below:

Error Code Description

12 No error has occurred. 21 X-Ray Protect circuit. 22 Short Protect circuit. 23 Horizontal Deflection failure. 24 Vertical Deflection failure.

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MODELS: VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411

789

SQV

POWER

HOME

PAUSE

REC

FF/FWDREW/REV

PLAY

STOP

VOLUME

INFO

CANCEL

PIP/POP

PIP SIZE

PIP CH

INPUT

SLEEP

VIDEO

AUDIO

MUTE

CHANNEL

ENTER

PIP INPUT

EXCH

GUIDE

AUDIO

CABLE/DBS

DVD

VCR

5. Circuit Adjustment Mode

Except for the following, all adjustment items must be performed using the remote hand unit.

• Lens Focus

• Electrostatic Focus

FUNCTION CHASSIS

A. Activating the Circuit Adjustment Mode

1. Press the "MENU" button on a remote hand unit.

2. Press the number buttons "2", "2", "5", "7" in sequence. The screen will change to the Adjustment Mode.

Note: Repeat steps 1 and 2 if the circuit

adjustment mode display does not appear on screen

B. Selection of adjustment Functions and

Adjustment Items

To select an adjustment item in the circuit adjustment mode, first select the adjustment function that includes the specific adjustment item to be selected. Then, select the adjustment item.

Refer to the following pages for the listing of adjustment functions and adjustment items.

1. Press the "AUDIO" button on a remote hand unit to select an adjustment function. Each time the button is pressed, the Function changes in the following sequence:

Video Chr Defl Jung

MODE

ITEM#

Video Chr V20

Mode 0 NTSC

SIGNAL

1SCT55

ABBREV. DATA

VIDEO

AUDIO

FUNCTIONS

2. Press the “VIDEO” button to select a specific

C. Changing Data

After selecting an adjustment Item, use the “ADJUST UP/DOWN” button to change data.

• Press “ADJUST DOWN” to decrease the data value.

• Press “ADJUST UP” to increase the data value.

HR Sub Matr Main Matr

Adjustment Item. The Item number increases each time the “VIDEO” button is pressed.

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ENTER

ADJUST UP/DN

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