Mitsubishi WS-73517, WS-55517, V27, WS-65517 Service Manual

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MITSUBISHI ELECTRIC

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Manual

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PROJECTION TELEVISION

V27 CHASSIS

V27 MODELS

WS-55517

CAUTION:

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

SPECIFICATIONS

• Power Input : AC 120V, 60Hz

• Power Usage : 275W 300W [WS-65517/ WS-73517]

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

• Antenna Input : VHF/UHF 75Ω unbalanced

1 - NTSC.ATSC/QAM 1 -NTSC for PIP

• CRT Size : [7 inches] WS-55517/WS-65517

: [9 inches] WS-73517

• High Voltage : 32.0kV (at 0A)

• Speakers (8 Ohms 10W)

: 2 - 6" full range

• Input Level : VIDEO IN JACK (RCA Type)

• Output Level : VIDEO OUT JACK (RCA Type)

WS-55517 WS-65517 WS-73517

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)

1.0Vp-p 75Ω unbalanced

: AUDIO OUT JACK (RCA Type)

-4.7dBm 4.7kΩ unbalanced

Cabinet Weight & Demensions

Model Weight Height Width Depth WS-55517 WS-65517 WS-73517 383 lbs 66.3 in. 65.9 in. 30 in.

• Weight and dimensions shown are approximate.

• Design specifications are subject to change without notice.

221 lbs 50.7 in. 50.4in. 28 in. 292 lbs 62 in. 59 in. 28 in.

MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.

9351 Jeronimo Road, Irvine, CA 92618-1904

• Digital : IEEE-1394 I/O Jacks

Interface : AC-3 Digtal Audio Output

: HDMI

: CableCARD

: System 5 IR : USB Service Port

MODELS: WS-55517 / WS-65517 / WS-73517

CONTENTS

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

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

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

DISASSEMBLY PROCEDURES ......................................................................................................... 7

Cabinet Disassembly (Front) .................................................................................................. 7

Cabinet Disassembly (Rear) .................................................................................................. 8

SERVICING THE LENTICULAR LENS AND FRESNEL SCREEN ....................................................... 9

Removal of the Lenticular Screen and Fresnel Lens ........................................................................ 9

Installation of the Lenticular Screen and Fresnel Lens ................................................................... 10

DIAMONDSHIELD

CABINET SEPARATION PROCEDURES

WS-65517 / WS-73517 Cabinet Separation .................................................................................. 12

SERVICING PCBs ............................................................................................................................ 12

Chassis Removal .......................................................................................................................... 12

PCB Locations .............................................................................................................................. 13

Major Parts Locations ................................................................................................................... 13

CRT REPLACEMENT ....................................................................................................................... 14

CRT Removal ................................................................................................................................14

CRT Installation ............................................................................................................................ 15

ELECTRICAL ADJUSTMENTS ........................................................................................................ 17

Equipment and Initial Setup .......................................................................................................... 17

Initial Setup ................................................................................................................................... 18

LED Indicator Diagnostics ............................................................................................................. 19

Remote Control Operational Mode ................................................................................................ 19

Circuit Adjustment Mode ............................................................................................................... 20

Service Mode Reset ...................................................................................................................... 21

Convergence Adjustment Mode ..................................................................................................... 21

Adjustment Items List ................................................................................................................... 23

Adjustment Procedures ................................................................................................................ 26

Test Point Locations ............................................................................................................26

Main / Sub Y Level & HV Regulation .................................................................................... 27

Main / Sub Color Level & CRT Cutoff .................................................................................... 28

White Balance (NTSC) & White Balance (HD) ..................................................................... 29

Black Level & Sub Contrast ................................................................................................. 30

Dynamic Focus Presets & Lens Focus ................................................................................ 31

Alignment Magnet / Electrostatic Focus & Character Position ............................................. 32

Geometry Presets ............................................................................................................... 33

Deflection Geometry Adjustments ........................................................................................ 34

Convergence Geometry Adjustments ................................................................................... 35

Centering & Static Convergence ........................................................................................... 36

Coarse Convergence Adjustments ........................................................................................ 37

Fine Convergence Adjustments ............................................................................................ 38

Removal and Installation ............................................................................. 11

Page 3

MODELS: WS-55517 / WS-65517 / WS-73517

CHIP PARTS REPLACEMENT ......................................................................................................... 39

REPLACEMENT PARTS .................................................................................................................. 40

Parts Ordering .............................................................................................................................. 40

Critical and Warranty Parts Designation........................................................................................ 40

Parts Tolerance Codes .................................................................................................................. 40

Quick Reference List .................................................................................................................... 41

SERVICE PARTS LIST .................................................................................................................... 42

SCREEN ASSEMBLY PARTS LIST .................................................................................................. 55

CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 56

Part 2

V25/V27 Schematic Diagrams

CONTENTS Page

SCHEMATIC DIAGRAMS

PWB Interconnect Diagram............................................................................................................. 1

PWB-MAIN (Power Supply / Horizontal Deflection / HV) ................................................................ 2

PWB-TERMINAL -1 (Input Switch) .................................................................................................. 3

PWB-TERMINAL 2 (PIC µPC / FIF /E2P)....................................................................................... 4

PWBs-CRT / CONTROL / FRONT / PREAMP / SVM / DBF ........................................................... 5

HDMI .............................................................................................................................................. 6

PWB-SIGNAL-1 (MICRO) ............................................................................................................... 7

PWB-SIGNAL-2 (Convergence Generator) ....................................................................................... 8

PWB-SIGNAL-3 (VCJ / Vertical Deflection / Audio)) ........................................................................ 9

PWB-TUNER-1 (Tuners / Audio) .................................................................................................... 10

PWB-TUNER-2 (Demodulator) ...................................................................................................... 12

Page 4

MODELS: WS-55517 / WS-65517 / WS-73517

INTRODUCTION

This service manual provides service instructions for projection TV models WS-55517, WS-65517 and WS-73517 using the V27 chassis. Service personnel should read this manual thoroughly before servicing these chassis.

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

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

on the schematic diagram and by bold

Page 5

MODELS: WS-55517 / WS-65517 / WS-73517

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 1Meg 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: WS-55517 / WS-65517 / WS-73517

CABINET DISASSEMBLY (FRONT VIEW)

*Refer to the 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 4 screws (b) holding the Screen Assembly (all models).

4. Remove screws (c) from the Screen Assembly (WS-65517 & WS-73517 only)

5. Unplug the CC, ZF and GR connectors from the Control Panel.

6. Lift the Screen Assembly up and away from the cabinet.

Page 7

MODELS: WS-55517 / WS-65517 / WS-73517

CABINET DISASSEMBLY (REAR VIEW)

*Refer to the Parts List for Part Numbers

Rear Cabinet Disassembly

1. Remove the Back Board by removing screws (a), and screws (b).

2. Remove screws (c) to remove the Board Slide.

3. Remove screws (d) to remove the Board Shelves.

4. Remove screw (e) holding the chassis.

5. Remove 4 screws (f) securing the Light Box Assembly.

6. Be certain that all cables and connectors between the Light Box Assembly and external items are disconnected (e.g. speaker plugs, etc.), including the USB and 1394 connectors.

7. Slide the Light Box Assembly from the cabinet.

Page 8

MODELS: WS-55517 / WS-65517 / WS-73517

SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS

WS-55517 / WS-65517 / WS-73517

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 driver, and remove the pressure sensitive double sided tape.

(Rear V iew)

Page 9

MODELS: WS-55517 / WS-65517 / WS-73517

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.

1. Apply double coated tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens as shown below. Refer to the Table below for proper tape length.

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

Screen

Tape

Model

Size

Len

WS-55517 55" 47.8" WS-65517 65" 56.5" WS-73517 73" 63.5"

Page 10

MODELS: WS-55517 / WS-65517 / WS-73517

SERVICING THE DIAMONDSHIELD™

1. DiamondShield™ Removal Procedure

The appropriate disassembly procedure given below.

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

1. Gently insert a small plastic card (such as a credit card or a plastic putty knife) between the Diamond Shield the clip to pry the clip loose.

2. From the edge of the trim, pull the brackets outward to open like a hinge.

3. Carefully insert the small plastic card (or plastic putty knife) 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.

and one end of

4. Close the two trim brackets at the sides.

2. DiamondShield™ Installation Procedure

To install the DiamondShieldTM, reverse the above Removal Procedure. *(See the Parts List for DiamondShield™ part numbers)

Page 11

MODELS: WS-55517 / WS-65517 / WS-73517

CABINET SEPARATION PROCEDURE

WS-65517 / WS-73517 Cabinet Separation Procedure

1. Pull the Speaker Grill from the cabinet.

2. Unplug the CC, ZF and GR connectors.

3. Remove 4 plastic covers and screws (a) from each side of the cabinet.

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.

Main Chassis Removal

Chassis Removal

1. Undo the cable wire ties to the Front Panel, Speakers, CRTs, etc.

2. Unplug the 1394 cables from the DM module.

2. Remove screw (a) securing the Main Chassis.

3. Release the Chassis Locks on each side of the chassis.

4. Slide the Chassis out the rear of the unit.

5. Tilt upward to access the bottom of the main chassis.

Page 12

MODELS: WS-55517 / WS-65517 / WS-73517

PCB Locations

Main Components Location (Top View)

(DM Fan & Bracket Removed)

Page 13

MODELS: WS-55517 / WS-65517 / WS-73517

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.

Note: Refer to the Cabinet Disassembly Procedures 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 CR Block.

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

Figure 5-2

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.

Page 14

MODELS: WS-55517 / WS-65517 / WS-73517

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

Note: The CRT fixing screws should not be loosened nor should they be removed. [Figure 5-4]

Figure 5-4

1. Carefully position the replacement CRT and fasten in place using 4 screws "d". [Figure 5-6]

Figure 5-6

Figure 5-5

Page 15

MODELS: WS-55517 / WS-65517 / WS-73517

2. Install the Deflection Yoke on the CRT neck. [Figure 5-7]

3. Install the Lens that was removed in step 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 5-8. b) Install the mounting screws. [Figure 5-1]

4. Connect 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 5-7

Adjustment procedures after replacing the CRT(s)

• CRT Cut Off / White Balance Adjustment

• Static Convergence Adjustment

• Dynamic Convergence Adjustment

Figure 5-8

Page 16

MODELS: WS-55517 / WS-65517 / WS-73517

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)

• Signal Generator (both SD and HD capable)

• Frequency Counter

• Direct Current Voltmeter

• Direct Current Power Supply

• Multiplex Audio Signal Generator

• Direct Current Ampere Meter

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 17

MODELS: WS-55517 / WS-65517 / WS-73517

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", "4", "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-2-4-7-0)

OPTION MENU

Initial Power Restore :Off Direct Key Mode :Off

B. Default Settings

SETUP

Edit Setup Analog Captions With Mute Treble 50% Review

Antenna 1 Enabled Digital Captions With Mute Surround Off Antenna B Enabled Digital Settings Listen to Stereo Input DTV Enabled Appearance Default Level Sound Off Input 1 Enabled Digital Channel Guide Off TV Speakers On Input 2 Enabled Audio 2 Out Main Input 3 Enabled Component 1 Enabled V-CHIP Off Contrast 100% Component 2 Enabled TV Rating TV-PG Brightness 50% Antenna DTV Enabled FV-Fantasy Violence Enabled Sharpness 50% VGA Enabled D-Sexual Dialog Enabled Color 50% HDMI Enabled L-Adult Language Enabled Tint 50%

Icon Position S-Sexual Situation Enabled Color Temp. High

Ant-A, Ant-B, Ant-DTV, ComFlash V-Violence Enabled Video Noise Standard Input-1, Input-2, Input-3, Comp-1, Program not Rated Enabled Image Type Video Comp-2, HDMI. Movie Rating PG VSM Sharpness On

Transport Menu On V-Chip Time Video Mute On Language

ANTENNA

Antenna ANT A Color Balance Manual Memorize Channels Air Lock by Time Off PerfectColor™ Channel Ch-3 Lock Time NA A/V Memory for Ant-A All Centered Memory Deleted Unlock Time NA

TIME

Clock Setting Manual PIP Position Lower Right Time 12:00 AM A/V Memory Reset Ant-A POP Position Right Half Day Monday Audio PIP/POP Format Dble. Window

English Start Time 12:00 AM Black Enhancement On

MAIN MENU DEFAULT SETTINGS

CAPTIONS

Background Gray Balance 50%

V-CHIP LOCK

Stop Time 12:00 AM

Lock By Time

Front Button Lock Off Source Ant A Ch 3

AUDIO/VIDEO SETTINGS

Volume 30%

Bass 50%

ideo

Advanced

PIP/POP

Format

Stretched

A/V RESET DEFAULT SETTINGS (By Input)

A/V M emory Ant 1/2

Contrast Max. Max. Max. Max. Max. Brightness Center Center Center Center Center Sharpness Center Center Center Center Center

Color Center Center Center Center Center

Tint Center Center Center Center Center

Color Temp. High High High High High

Video Noise Standard Standard Standard N/A Standard

TV Film Mode (Auto) On On On N/A On

TV DefinEdge VSM On On On On On

Bass Center Center Center Center Center

Treble Center Center Center Center Center

Balance Center Center Center Center Center Surround OFF OFF OFF OFF OFF Listen To Stereo N/A N/A N/A N/A

Level Sound OFF OFF OFF OFF OFF

INPUTS

1/2/3

Component

1/2/DTV

1394 when

connected

HDMI

Page 18

MODELS: WS-55517 / WS-65517 / WS-73517

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.

A/V Reset

1. The front panel AV Reset button initializes all A/V Memories.

2. The AV Reset in the user’s menu initializes only the selected input’s A/V Memory.

LED Indicator Diagnostics

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

1. Initial Control Circuitry Check

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

LED Indications Conditions Probable Cause

Off After AC is applied No Standby Power or TV µPC not running

Fast Blink for 70 sec. After AC is applied Normal - DM µPC is booting up.

Fast Blink (Doesn't stop) After AC is applied TV µPC is running, but DM failed to boot up

Slow Blink Set is Off Normal - Timer is set for Auto Trun On

2. Error Code Operational Check

Note: The TV must be in “Shut Down” and not have been switched Off, to perform the Error Code Opera-

tional Check. When the TV is switched Off, the code automatically resets to “12” No Error.

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 occurred since the last Initialization.

Note: The front panel buttons must 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 “23”, the LED will flash two times, pause, and then flash three

times.

3. Error Codes

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

Error Code Probable Cause

12 No error detected 21 X-Ray Protect 22 Short Protect 23 Loss of Deflection

Remote Control Operational Modes

There are two Remote Hand Unit Operational Modes, “Standard” and “NetCommandTM”. The Remote is initially in the “Standard” mode. The “NetCommandTM” mode is used when controlling Home Theater devices using NetCommandTM. To change the Remote Operational Mode:

• Set the Remote to the TV Layer

• Point the Remote away from the TV.

• To change to “Netcommand

” ... Hold the “Power” button and press “9-3-5” in sequence.

• To change to “Standard” ... Hold the “Power” button and press “0-0-0” in sequence.

Page 19

MODELS: WS-55517 / WS-65517 / WS-73517

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. Video/Color adjustments must be performed in the 480i and 1080i modes, and data must be preset in the 480P (DVD) and VGA modes.

Note: Set the Remote Operational Mode to “NetCommandTM”. (Hold the “Power” button and press “9-3-5” in sequence.) This slows the remote’s response and makes adjustments easier. When adjustments are complete, set the Remote to its’ original Operational Mode. (Hold the “Power” button and press “0-0-0” in sequence)

A. Activating the Circuit Adjustment Mode

The current signal source determines if the activated Adjustment Mode is 480i or 1080i.

1. Select the signal source (480i or 1080i).

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

3. Press the number buttons "2, "4", "5", "7" in sequence. The screen will change to the Adjustment Mode.

Note: Repeat steps 1 and 2 if the circuit

adjustment mode does not appear on screen.

CHASSIS

FUNCTION

ADJ ITEM

ISF

MMTX

15YDRM 5 480i

ABBREV. DATA

SIGNAL

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:

CRT_JUNGL AD9883A

SMTX MMTX

Adjustment Functions

2. Press the “VIDEO” button to select a specific Adjustment Item. The Item number increases each time the “VIDEO” button is pressed.

CRT_VC

C. Changing Data

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

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

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

D. Saving Adjustment Data

Press “ENTER” to save adjustment data in memory. The character display turns red for approximately one second in this step.

Note: If the circuit adjustment mode is terminated without pressing “ENTER”, changes in adjustment data

are not saved.

Page 20

MODELS: WS-55517 / WS-65517 / WS-73517

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.

F. Toggle Between Reception Modes

Pressing “3” when in the Adjustment Mode CRT-VC Function toggles between 480i, 480p, 1080i and VGA. However data changes are not automatically saved. Press “ENTER” to save data before pressing “3”.

G. Service Mode Reset

To reset items in the Service Mode to their factory values:

1. Press MENU-2-4-5-7 to enter the Service Mode.

2. Press the “0”.

3. Select “Restore Backup”

4. Press “”ENTER”

On Screen Display Position Adjustment Mode

Activation

1. Select 480i or 1080i source.

2. Press MENU-2-4-8-8

Convergence Adjustment Mode

The Convergence mode is used to perform raster geometry correction, and convergence adjustments. These adjustments must be made in both the SD (NTSC) and HD modes.

Note: Before activating the Convergence mode, turn “Video Mute” Off. The internal crosshatch pattern will not be displayed with “Video Mute” On, only a blue background is displayed.

A. Convergence Mode Activation

1. Press MENU-2-4-5-9

2. When the Convergence Mode is activated, this display appears on a Green Crosshatch.

"MENU-2-4-5-7-0"

Restore Backkup UPLOAD TERMINAL BOARD DAT

convM COARSE GREEN

0HST

ITEM ABREV DATA NO.

B. Selecting the HD or SD Mode

1. Select the Signal Source before entering the

Convergence Mode, either an NTSC or HD source.

2. Enter the Convergence Mode

• If the signal source is NTSC, the SD mode is activated.

• If the signal source is HD, the HD mode is activated.

3. Activating the HD mode when no HD signal is available

• Press the “DEVICE” button.

• Use the “UP-DOWN-RIGHT-LEFT” direction buttons to select the ANT-DTV, then press “ENTER”.

• Press “MENU-2-4-5-9-5” in sequence to activate the Coarse Green HD Convergence mode.

C. Convergence Mode Functions

In the Convergence Mode there are three main Functions (Categories).

• Pressing “6” activates CONV MISC

• Pressing “5” activates COARSE CONV

• Pressing “4” activates FINE CONV

Page 21

MODELS: WS-55517 / WS-65517 / WS-73517

D. CONV MISC (Press 6)

This mode is used to preset data values controlling the Convergence Generator, and to perform the HV Regulation adjustment.

1. Use the VIDEO button to select an item.

2. Use the ADJUST buttons to change data.

NOTE: When Item “1 HVOL” is selected the screen goes black except for the data display. This occurs

since a black screen is required when making the HV Regulation adjustment.

E. COARSE CONV (Press 5)

There are four Sub Functions in the Coarse mode, COARSE GREEN, COARSE RED, COARSE BLUE and DF.

• COARSE GREEN .... used to make Coarse Raster Geometry Adjustments.

• COARSE RED ... used to make Coarse Red Convergence Adjustments.

• COARSE BLUE ... used to make Coarse Blue Convergence Adjustments.

• DF ... used to preset data values controlling the Dynamic Beam Focus circuit drive signal.

1. Use AUDIO button to select a Sub Function

2. Use the VIDEO button to select an Adjustment Item.

3. Use the ADJUST buttons to change data.

F. FINE CONV (Press 4)

Sub Functions

This mode is used to perform Fine Raster Correction, and Fine Red and Blue Convergence Adjustments. There are three Sub Adjustment Functions, selected with the AUDIO button:

• FINE GREEN .... a Green Crosshatch is displayed, to make Fine Raster Corrections.

• FINE RED .... a White Crosshatch is displayed, to make Fine Red Convergence Adjustments.

• FINE BLUE .... a White Crosshatch is displayed, to make Fine Blue Convergence Adjustments.

Cursor

In the Fine mode a Cursor is added to the Crosshatch. The ENTER button toggles the Cursor between two modes:

• MOVE (blinking Cursor) .... use the ADJUST buttons to select any of 64 points on the Crosshatch.

• ADJUST (Non blinking Cursor) .... the ADJUST buttons adjust the active color at the current Cursor

position, horizontally or vertically.

Display

The on-screen display changes in the Fine mode, as shown at the right. The display shows the vertical and horizontal data for the current Cursor Position, and the horizontal and vertical coordinates for that position.

G. Saving Data and Exiting the Convergence Mode

Press MENU twice to exit the Convergence mode, data is automatically saved.

Page 22

V27

CONV FINE GREEN

V13 H-4 SD

VERTICAL

DATA

HORIZ.

DATA

MODELS: WS-55517 / WS-65517 / WS-73517

E2PROM Replacement

Data accessed in the Convergence Adjustment Mode is stored in IC8D01on the PCB-SIGNAL. Replacement

PCB’s are supplied pre-aligned so that only fine adjustments should be necessary after replacement. All other service data is stored on the PCB-E2P located on the DM assembly. When replacing the DM assembly, retaining the original PCB-E2P will eliminate the need for any realignment. The following tables are provided as a guide in case of total data loss.

List of Adjustment Items.

VC Function (Video Color) MENU-2-4-5-7

Function Display Adjustment Data Initial Data Notes

NO. Abbrev. Description Range 480i 480p 1080i

1 SBRT Sub Brightness Adjust 0~63 20 20 20 Black Level 2 SCT Picture Gain Adjust 0~63 31 42 42 Sub Contrast 3 SCON Sub Contrast Adjust 0~15 7 7 7 Preset 4 RDRH R-Drive (high) 0~15 31 31 31 White Balance 5 GDRH G-Drive (high) 0~15 37 41 41 " 6 BDRH B-Drive (high) 0~63 31 31 31 White Balance 7 CTRH R-Cutoff (high) 0~63 31 31 31 " 8 CTGH G-Cutoff (high) 0~63 25 31 31 " 9 CTBH B-Cutoff (high) 0~63 31 31 31 "

10 RDRL R-Drive (low) 0~63 31 31 31 " 11 GDRL G-Drive (low) 0~63 37 41 41 " 12 BDRL B-Drive (low) 0~63 31 31 20 " 13 CTRL R-Cutoff (low) 0~63 31 31 25 " 14 CTGL G-Cutoff (low) 0~63 25 31 35 " 15 CTBL B-Cutoff (low) 0~63 31 31 20 " 16 GMMA RGB Gamma correction 0~3 2 2 2 " 17 GAML Gamma Differ. Sw. 0~1 0 0 0 Preset 18 BRT Brightness Control 0~63 28/*32 33 36 User 19 COL Color Control 0~63 34 35 32 User 20 TNT Hue Control 0~63 26/*29 30 29 User 22 CBOF Cb sub signal DC cancel 0~63 31 31 31 Preset 23 CR0F Cr sub signal DC cancel 0~63 31 31 31 " 38 DCTR Y DC trans. Ration 0~3 1 1 2 " 56 ASBL S-ABL gain setting 0~3 0 0 0 "

* Component Input

CRT-JNGL Function (Jungle)

Adjustment Description

No.Item HDSDHDSDHD SD

1 HWID Horizontal Width 0~63 25 25 21 21 28 28 2 HKEY Horizontal Keystone 0~63 41 37 25 24 25 24 7 VHGT Vertical Height 0~63 28 31 33 38 33 41 8 VLIN Vertical Linearity 0~15 6 6 6 6 6 6

9 VSCN Vertical S-Correction 0~15 3 3 3 3 3 3 13 H-POS Horizontal Position 0~63 38 23 38 23 38 23 18 V-POS Vertical Position 0~63 31 31 31 31 31 31

Data

Range

Page 23

WS-65517

MENU-2-4-5-7

WS-73517WS-55517Display

+ 53 hidden pages

Mitsubishi WS-73517, WS-55517, V27, WS-65517 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Chassis Removal

CRT REPLACEMENT

ELECTRICAL ADJUSTMENTS