Mitsubishi WT-42313, WT-42413 Schematic
MITSUBISHI ELECTRIC
2003
Service
Manual
PROJECTION TELEVISION
K20 CHASSIS
WT-42313
WT-42413
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 : AC 120V, 60Hz
240W
• Frequency : VHF 54 ~ 470MHz
Range UHF 470 ~ 806MHz
• Antenna Input : VHF/UHF 75Ω unbalanced
• CRT Size : [7 inches]
• High Voltage : 32.0kV (at 0A)
• Cabinet : 39"(W)x34"(H)x25"(D)
Demensions
• Weight : 105 lbs
• Weight and dimensions shown are approximate.
• Design specifications are subject to change without notice.
• Speaker : Two 5" round, full range (8Ω 5W)
• 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
• Digital Inputs MonitorLink
• Output Level : VIDEO OUT JACK (RCA Type)
1.0Vp-p 75Ω unbalanced
: AUDIO OUT JACK (RCA Type)
-4.7dBm 4.7kΩ unbalanced
TM
/DVI
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2003 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MODELS: WT-42313 / WT-42413
CONTENTS
INTRODUCTION .................................................................................................................................. 5
PRODUCT SAFETY NOTICE ............................................................................................................... 5
SAFETY PRECAUTIONS ..................................................................................................................... 6
CABINET DISASSEMBLY
Front View Disassembly .................................................................................................................. 7
Rear View Disassembly ................................................................................................................... 8
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
Lenticular Screen and Fresnel Lens Removal .................................................................................. 9
Lenticular Screen and Fresnel Lens Installation ............................................................................... 9
SERVICING PCBs
Accessing the Main Chassis ......................................................................................................... 10
PCB Locations ................................................................................................................................ 11
Main Components Location ............................................................................................................. 11
CRT REPLACEMENT
Second Anode Lead Removal ........................................................................................................ 12
CRT Removal ................................................................................................................................. 12
CRT Installation .............................................................................................................................. 23
ELECTRICAL ADJUSTMENTS
Test Equipment .............................................................................................................................. 15
Initial Setup .................................................................................................................................... 16
Main Menu Defaults ....................................................................................................................... 16
LED Indicator Diagnostics .............................................................................................................. 17
Circuit Adjustment Mode ................................................................................................................ 18
Service Mode Reset ....................................................................................................................... 19
Convergence Adjustment Mode ...................................................................................................... 19
Adjustment Items List .................................................................................................................... 21
Adjustment Test Points .................................................................................................................. 24
Adjustment Procedures
High Voltage Regulation ........................................................................................................ 25
Main/Sub Y Level .................................................................................................................. 25
Main/Sub Color Level ............................................................................................................ 26
CRT Cutoff ............................................................................................................................. 26
White Balance (NTSC) .......................................................................................................... 27
White Balance (HD) .............................................................................................................. 27
Black Level............................................................................................................................ 28
Sub Contrast ......................................................................................................................... 28
Dynamic Focus Preset ......................................................................................................... 29
Lens Focus ........................................................................................................................... 29
Electrostatic Focus ............................................................................................................... 30
On Screen Display Character Position .................................................................................. 30
Deflection/Convergence Geometry Presets ........................................................................... 31
Deflection Circuit Geometry Adjustments ............................................................................. 32
Convergence Circuit Geometry Adjustments ......................................................................... 33
Centering and Static Convergence ........................................................................................ 34
Coarse Convergence Adjustments ........................................................................................ 35
Fine Convergence Adjustments ............................................................................................. 36
Page 3
MODELS: WT-42313 / WT-42413
CHIP PARTS REPLACEMENT .......................................................................................................... 37
REPLACEMENT PARTS
Parts Ordering ................................................................................................................................ 38
Critical and Warranty Parts Designation ........................................................................................ 38
Parts Tolerance Codes ................................................................................................................... 38
Replacement Part Notes
When replacing the RF-Switch or PCB-SIGNAL ................................................................... 38
When replacing the EEPROM .............................................................................................. 38
Quick Reference List ...................................................................................................................... 39
Service Parts List ........................................................................................................................... 40
Screen Parts List ........................................................................................................................... 52
CIRCUITRY BLOCK DIAGRAMS
Power Supply ................................................................................................................................. 53
Video / Color Signal Path ............................................................................................................... 54
Sync Signal Path ........................................................................................................................... 55
Deflection / HV ............................................................................................................................... 56
X-Ray Protect ................................................................................................................................. 57
HV Regulation ................................................................................................................................ 58
Sound Signal Path ......................................................................................................................... 59
Convergence .................................................................................................................................. 60
Control Circuitry ............................................................................................................................. 61
Schematic Diagrams
SCHEMATIC DIAGRAMS
BLOCK DIAGRAM ......................................................................................................................... S1
PCB-SIGNAL 2 (Micro) .................................................................................................................. S2
PCB-SIGNAL 3 (VCJ_ .................................................................................................................... S3
PCB-TERMINAL 1 (AV SW & Decoder)) ........................................................................................ S4
PCB-UNI ........................................................................................................................................ S5
PCB-CRT/CONTROL/FRONT/AI ................................................................ See VK20 Service Manual
PCB-MAIN ................................................................................................ See VK20 Service Manual
PCB-SIGNAL 1 ......................................................................................... See VK20 Service Manual
PCB-SIGNAL 4 ......................................................................................... See VK20 Service Manual
PCB TERMINAL 2 ..................................................................................... See VK20 Service Manual
PCB DOUBLER 1 ..................................................................................... See VK20 Service Manual
PCB DOUBLER 2 ..................................................................................... See VK20 Service Manual
PCB DOUBLER 3 ..................................................................................... See VK20 Service Manual
PCB LAYOUT DIAGRAMS ................................................................................................................ P1
Page 4
MODEL: WT-42313 / WT-42413
INTRODUCTION
This service manual provides service instructions for PTV Models WT-42313 and WT-42413 using the VK20 chassis.
Service personnel should read this manual thoroughly before servicing this 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 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
MODEL: WT-42313 / WT-42413
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).
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MODEL: WT-42313 / WT-42413
CABINET DISASSEMBLY (FRONT VIEW)
*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 3 screws "a".
3. Remove 3 screws “b” and then remove the Front Mask and Diamond Shield.
4. Remove 8 screws “c” and then the Assembly Screen.
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MODEL: WT-42313 / WT-42413
CABINET DISASSEMBLY (REAR VIEW)
Rear Cabinet Disassembly
1. Remove the Back Board by removing screws 7 "a".
2. Remove 6 screws "b" securing the Light Box Assembly.
3. Disconnect connector EJ.
4. Slide the Light Box Assembly out of the cabinet.
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MODEL: WT-42313 / WT-42413
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.
This may cause fire and heat related injuries.
1. Lenticular Screen and Fresnel Lens Removal
1. Remove the screen assembly as shown in the Cabinet Front Disassembly procedure.
2. Remove screws “a” from the bottom Corner Brackets.
3. Remove the Holder-Screen-Bottom.
4. Slide the Lenticular Screen and Fresnel Lens from the Assembly Screen as shown below..
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.
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 36.5 inches of double sided tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens.
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.
3. Reverse the disassembly procedure to install the screens in the screen frame.
Page 9
Accessing The Main Chassis
In the VK20 chassis, the Main Chassis is located in front of the CRTs. Use the following procedure to access
the Main Chassis.
1) Remove the Light Box Assembly, refer to the Cabinet Rear Disassembly.
2) The shelf in the front of the Light Box Assembly is removable, refer to Figure 1.
3) Release the shelf lock. Apply pressure to the shelf lip on the right side (downward and towards the
front). Refer to Figure 2
4) Hold both sides of the shelf, pull forward and then upward to remove the shelf.
MODEL: WT-42313 / WT-42413
SERVICING PCBs
Page 10
PCB Locations
MODEL: WT-42313 / WT-42413
Major Parts Locations
Page 11
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.
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 the CRTs
by shorting the open end of the respective high voltage cable to chassis ground.
MODEL: WT-42313 / WT-42413
ANODE LEAD REMOVAL
2) While holding the lead down rotate
the lead 90º counter clockwise.
3) Carefully remove the Anode Lead
from the Flyback Transformer.
CRT REPLACEMENT
1. Refer to Cabinet Disassembly and remove the Light Box Assembly.
2. Remove the three Anode Lead Wires from the Flyback transformer and discharge the CRTs. (Use the
above procedure)
3. Unplug the three PCB-CRTs.
4. Remove 4 screws "a" retaining the Optical Unit. [Figure 1]
5. Remove 4 screws "b" retaining the Lens of the respective CRT
6. Lift the Optical Unit from the Light Box and set it lens down on a flat surface.
7. Remove 4 screws "c" retaining the CRT. [Figure 2]
Note: DO NOT loosen the spring loaded screws. Doing so will break the seal between the
C-Element and the # 6 Lens, causing leakage of the CRT Coolant.
8. Remove the Deflection Yoke from the neck of the CRT. [Figure 3]
Figure 1
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MODEL: WT-42313 / WT-42413
Figure 2
Note: The 4 spring-loaded screws shown
in Fig 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.
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 4]
Figure 3
Figure 4
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MODEL: WT-42313 / WT-42413
1. Carefully position the replacement CRT and fasten in place using 4 screws "c". [Figure 2]
2. Install the Deflection Yoke on the CRT neck. [Figure 3]
3. Install the Lens that was removed in step 5 of Removal of the CRT.
a) Position the Lens so that the Lens Adjustment Set Screw faces the rear of the TV [Figure 5].
b) Install the Lens mounting screws “b”. [Figure 1]
4. Insert the Optical Unit into the Light Box Assemblyand secure it with 4 screws “a” [Figure 1]..
5. Plug in the PCB-CRTs.
6. Insert the Anode Lead Wires into the Flyback Transformer.
7. Re-clamp the Lead Wire in its original position.
Adjustment procedures after replacing the CRT(s)
• CRT Cut Off / White Balance Adjustment
• Static Convergence Adjustment
• Dynamic Convergence Adjustment
Figure 5
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MODEL: WT-42313 / WT-42413
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.
Monoscope Signal
Split-Field Color Bars (100% window)
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MODEL: WT-42313 / WT-42413
AUDIO SETTINGS
VIDEO SETTINGS
TV Volume
PIP Source
PIP Position
POP Position
Format
PIP/POP Format
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 "0", "3", "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-0-3-7-0
OPTION MENU
Initial
Power Restore :OFF
DTV Port :Auto
B. Default Settings
MAIN MENU DEFAULT SETTINGS
SETUP
Memorize channels ANT-A - Air FV- Fantasy Violence Allow Blue Max
Language (idioma) English D-Sexual Dialog Allow
Front Button Lock Off L-Adult Language Allow A/V Memory Reset Ant-A
INPUT ASSIGNMENT Menu
Antenna A On V-Violence Allow Audio Output (TV Vol) Variable
Antenna B On Movie Rating PG
DTV YPrPb Programs Not Rated Allow TV Bass 50%
Component Component TV Treble 50%
Input-1 Input-1 V-Chip Start Time 12:00AM TV Balance 50%
Input-2 Input-2 V-Chip Stop Time 12:00AM TV Surround Off
Input-3 Input-3 Lock by Time Off TV Listen To Stereo
MonLink MonLink Lock Time N/A TV Level Sound Off
CLOCK Menu
Clock Setting Manual TV Contrast Max
Time Zone NA Video Mute On TV Brightness 50%
Daylight Savings Time NA Black Enhancement On TV Sharpness 50%
Clock Time 12:00pm TV Color 50%
Set Day Sunday Timer Off TV Tint 50%
CAPTIONS Menu
Closed Captions On if Mute Set Day Everyday TV Video Noise Standard
CC Background Gray Device Ant-A TV Film Mode (Auto) On
CHANNEL EDIT Menu
Antenna ANT-A
Channel 3 Auto Color Correction Off
Memory Deleted
Name N/A Magenta Max
SQV N/A Red Max
V-CHIP-LOCK Menu
V-Chip Off Green Max
TV Rating TV-PG Cyan Max
AUDIO/VIDEO Menu
S-Sexual Situations Allow TV Speakers (Internal) On
V-CHIP LOCK By Time Menu
Unlock Time N/A
ADVANCED FEATURES Menu
TIMER Menu
Set Time 12:00PM TV Color Temp High
Channel 3 TV VSM Sharpness On
COLOR BALANCE Menu
PerfectColor™
Yellow Max
Lower Right
Side by Side
30%
Ant-A Ch 3
Right Half
Stretch
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MODEL: WT-42313 / WT-42413
Ant-B
1/2/3
TV Contrast
TV Brightness
TV Sharpness
TV Color
TV Tint
TV Color Temp.
Video Noise
TV Image Type
TV SVM
TV Bass
TV Treble
TV Balance
TV Surrond
TV Listen To
TV Level Sound
Off
Off
Off
Off
Off
Items in the table below are set to following after Initalization.
AV Memory Initial Settings
A/V Memory
Ant-A
Max Max Max Max Max
Center Center Center Center Center
Center Center Center Center Center
Center Center Center Center Center
Center Center Center Center Center
High High High High High
Standard Standard Standard Standard Standard
Video Video Video Video Video
DTV
NTSC
COMP MonLink
Sharpness
On On On On On
Center Center Center Center Center
Center Center Center Center Center
Center Center Center Center Center
Off Off Off Off Off
Stereo Stereo Stereo Stereo NA
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
Note: The TV must be in “Shut Down” and not heve 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 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 “23”, the LED will flash two times, pause, and then flash three
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 Deflection Loss
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MODEL: WT-42313 / WT-42413
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 "0", "3", "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:
MODE
ITEM#
Video Chr K20
Mode 0 NTSC
1 SCT 55
ABBREV. DATA
SIGNAL
Video Chr Defl Jung
FUNCTIONS
HR Sub Matrx Main Mtrx
2. Press the “VIDEO” button to select a specific
Adjustment Item. The Item number increases each
time the “VIDEO” button is pressed.
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.
MENU
ENTER
ADJUST
UP/DN
VIDEO
AUDIO
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MODEL: WT-42313 / WT-42413
SD
Coarse BLUE
1
HSTA
-50
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.
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 Video/Chroma Function toggles between 480i, 480p, and 1080i.
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-0-3-5-7 to enter the Service Mode.
2. Press the “INPUT” or “DEVICE” button, on the front panel or the remote, and hold for 2 seconds
6. Convergence Adjustment Mode
The Convergence mode is used to perform raster geometry correction, and convergence adjustments as
specified in Adjustment Procedures 15 through 18.
A. Convergence Mode Activation
1. Press MENU-0-3-5-9
2. When the Convergence Mode is activated, the display at
the right appears on a Green Crosshatch.
Coarse Conv. Display
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 (MENU-0-3-5-9)
• If the signal source is NTSC, the SD mode is activated.
• If the signal source is HD 1080i, the HD mode is activated.
3. Activating the HD mode when no HD signal is available.
• Activate the Factory Option Menu (MENU-0-3-7-0)
• Use the “Adjust” keys to select “DTV Port” and press “Enter” to change the setting to “1080i”.
Sequence = “Auto”-”480i”-480-p”-”1080i”. Ignore any loss of sync while changing modes.
• Exit the Option Menu (Press “MENU” twice).
• Select the DTV Inputs as the signal source (INPUT button).
• Activate the Convergence Mode ... the Convergence mode will be in the HD mode and the internal
crosshatch is displayed.
4. After adjusting Convergence, be sure to set the DTV Port back to AUTO.
• Select an analog input as the signal source (INPUT button).
• Activate the Option Menu (MENU-0-3-7-0).
• Use the “Adjust” keys to select “DTV Port and press “Enter” to change the setting from “1080i” to
“AUTO”.
• Exit the Option Menu (Press MENU twice).
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
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MODEL: WT-42313 / WT-42413
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, for Fine Raster Corrections.
• FINE RED .... a White Crosshatch is displayed, for Fine Red Convergence Adjustments.
• FINE BLUE .... a White Crosshatch is displayed, for 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.
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MODEL: WT-42313 / WT-42413
SD
Fine RED
13H1V3
-32
Video Chroma Function
Menu-0-3-5-7
Item#
Abbrev.
Description
Range
480i
480p
1080i
Adjustment
55
ABLT
Threshold Adjust for ABL input
0~15
777
"
Cursor Coordinates
Specific intersections in the Crosshatch are assigned vertical and horizontal coordinates.
These are shown in the preceeding diagram. The Cursor can only be moved to those positions that
have coordinates assigned. If the Cursor is at coordinates outside the screen area, the Cursor will not be
visible. Use the ADJUST buttons to move the Cursor to an intersection on the screen.
Display
The on-screen display changes in the Fine mode, as shown below.
The display shows the vertical and horizontal data for the current
Cursor Position, and the horizontal and vertical coordinates for
that position.
Horiz. H Coord. V Coord. Vert.
Data Data
F. Saving Data and Exiting the Convergence Mode
Press MENU twice to exit the Convergence mode, data is automatically saved.
Note: If power is interrupted prior to properly exiting the Convergence Mode, changes in adjustment
data will not be saved.
ADJUSTMENT ITEMS LIST
Data
1 SCT Picture Gain control 0~63 31 31 31 Sub Contrast
2 SBRT Sub Brightness 0~63 31 31 31 Black Level
3 SCON Sub Contrast 0~15 0 0 0 Preset
4 RDRH R Drive (H temp) 0~63 31 31 31 White Balance
5 GDRH G Drive (H temp) 0~63 41 41 41 Preset
6 BDRH B Drive (H temp) 0~63 31 31 31 White Balance
7 CTRH R Cutoff (H temp) 0~63 31 31 31 "
8 CTGH G Cutoff (H temp) 0~63 46 46 46 Preset
9 CTBH B Cutoff (H temp) 0~63 31 31 31 White Balance
10 RDRL R Drive (L temp) 0~63 31 31 31 "
11 GDRL G Drive (L temp) 0~63 41 41 41 Preset
12 BDRL B Drive (L temp) 0~63 31 31 31 White Balance
13 CTRL R Cutoff (L temp) 0~63 31 31 31 "
14 CTGL G Cutoff (L temp) 0~63 55 55 55 Preset
15 CTBL B Cutoff (L temp) 0~63 31 31 31 White Balance
16 GMMA RGB Gamma Correction 0~3 1 1 1 Preset
17 GAML Gamma Differential Corr. Switch 0~1 0 0 0 "
18 BRT Brightness 0~63 31 31 31 "
19 COL Color 0~63 35 31 31 White Balance
20 TINT Tint 0~63 28 31 31 Preset
21 SHRP Sharpness 0~63 31 33 31 "
22 CBOF Cb DC Offset 0~63 31 31 31 "
23 CROF Cr DC Offset 0~63 31 31 31 "
31 VMLE VM Output Level 0~3 2 2 1 "
40 AGIW White output aging mode switch 0~1 0 0 0 "
Page 21
MODEL: WT-42313 / WT-42413
CONV MISC.
MENU-0-3-5-9-6
Item#
Abbrev.
Description
Range
SD
HD
17
EPWP
EEPROM write protection
0~100
Deflection Jungle
Menu-0-3-5-7
Item#
Abbrev.
Description
Range
HD
Others
36
PINA
Horiz. PC Corr.
0~63
31
31
MAIN MATRIX
MENU-0-3-5-7
Item#
Abbrev.
Description
Range
Initial
3
YDRM
Main Y Gain
0~63
12
SUB MATRIX
MENU-0-3-5-7
Item#
Abbrev.
Description
Range
Initial
5
UPDS
V signal DC Control
0~15
7
HR
MENU-0-3-5-7
Item#
Abbrev.
Description
Initial
2
HRHD
HD Disp. Position
15
1 HWID Width 0~63 13 17
2 HKEY Horiz. Keystone 0~63 9 3
7 VHGT Height 0~63 18 36
8 VLIN Vert. Linearity 0~15 8 6
9 VSCN Vert. S Corr. 0~15 0 0
18 VPOS Vert. Position 0~63 31 31
Data
1 TNTM Main Tint Control 0~63 30
2 COLM Main Color Control 0~63 29
Data
1 TNTS Sub Tint Control 0~63 28
2 COLS Sub Color Control 0~63 19
3 YDRS Sub Y Gain 0~63 9
4 VPDS U signal DC Control 0~15 7
1 HR NTSC Disp.Pos. 29
CONVERGENCE MODE ITEMS
Data
1 HVOL HV Adjust 0~352 150 150
2 VCNT V-saw amplitude 0~127 29 29
3 VSTR V-saw start timee 0~127 0 10
4 VOFS V-saw offset 0~127 10 8
5 STLN Start line 0~127 38 26
6 FPHS Fine phase 0~352 310 296
7 CPHS Coarse phase 0~31 15 15
8 HOFS H-saw offset 0~127 22 22
9 DPHS DF coarse horiz phase 0~31 1 1
10 DOFS DF offset 0~127 40 30
11 TPHS Test Pattern phase 0~352 45 38
12 TPVD Test Pattern Vert. Position 0~127 22 39
13 ODEV Odd/Even detection 0~352 200 125
14 HRTC H-saw retrace 0~3 1 1
15 DRTC DF retrace 0~3 1 1
16 DAC External DAC selection 0~1 1 1
Page 22
MODEL: WT-42313 / WT-42413
COARSE CONV GREEN (MENU-0-3-5-9-5)
#
Abbrev.
Description
SD
HD
12
VLIN
Vert. Linearity
-50
-50
COARSE CONV RED (MENU-0-3-5-9-5)
#
Abbrev.
Description
SD
HD
11
SDBW
Side Bow
30
30
COARSE CONV BLUE (MENU-0-3-5-9-5)
#
Abbrev.
Description
SD
HD
11
SDBW
Side Bow
-30
0
DF (MENU-0-3-5-9-5)
Item
Abbr.
Description
SD Data
HD Data
1 HSTA Horiz. Position 0 0
2 VSTA Vert. Position 39 39
3 SKEW Skew (Y axis) 0 0
4 TILT Tilt (X axis) 0 0
5 HWID Width 50 50
6 HLIN Horiz. Linearity 0 0
7 SPCC Side PC Corr. 20 0
8 HKEY Horiz. Keystone 0 -20
9 TBPC Top/Bottom PC -180 -140
10 VKEY Vert. Keystone 0 0
11 VWID Height 11 20
1 HSTA Horiz. Position 50 50
2 VSTA Vert. Position 0 0
3 SKEW Skew (Y axis) 0 0
4 TILT Tilt (X axis) 0 0
5 HLIN Horiz. Linearity -300 -250
6 HWID Width -20 0
7 VKEY Vert. Keystone -155 -190
8 VWID Height 0 0
9 VLIN Vert. Linearity 0 0
10 TBPC Top/Bottom PC 70 100
1 HSTA Horiz. Position -50 -50
2 VSTA Vert. Position 0 0
3 SKEW Skew (Y axis) 0 0
4 TILT Tilt (X axis) 0 0
5 HLIN Horiz. Linearity 300 250
6 HWID Width 0 0
7 VKEY Vert. Keystone 150 150
8 VWID Height 0 0
9 VLIN Vert. Linearity 0 0
10 TBPC Top/Bottom PC -30 0
0 DFH Dynamic Focus (Horizontal) -255 -300
1 DFV Dynamic Focus (Vertical) -125 170
Page 23
MODEL: WT-42313 / WT-42413
Adjustment Test Point Location
Test Points
DT pin 3 - HV Adjust
DT pin 6 - Ground
DT pin 7 - 12 Volts
DT pin 8 - ACL
JA pin 14- Main Picture (Y)
JA pin 18 - Main Color (Cr)
JA pin 4 - Sub Picture (Y)
JA pin 8 - Sub Picture (Cr)
TP6(R, G or B) - CRT Cathode
Page 24
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