Panasonic TX-29P250T Service Manual

TX-29P250T

EURO7 Chassis

Order No. MTV0103127C3

Colour Television

Specification

Power Source AC Auto 220 V, 50/60 Hz Power Consumption 209 W

Standby condition : 0.5 W

Receiving System

Function

Reception of broadcast transmissios and Playback from Video Cassette Tape Recorders

7 NTSC M (NTSC 3.58/4.5 MHz

Playback from special VCRs

Playback from Special Disc Players and Special VCRs

Receiving Channels Regular TV

8NTSC4.43/5.5MHz

9NTSC4.43/6.0MHz 10 NTS C 4.43/6.5 MHz 11 NTS C 3.58/5.5 MHz 12 NTS C 3.58/6.0 MHz 13 NTS C 3.58/6.5 MHz

15 PAL 60 Hz/5.5 MHz 16 PAL 60 Hz/6.0 MHz

17 PAL 60 Hz/6.5 MHz 18 SECAM 60 Hz/5.5 MHz 19 SECAM 60 Hz/6.0 MHz 20 SECAM 60 Hz/6.5 MHz

21 NTSC 50 Hz/4.5 MHz

21 Systems

1 PAL B, G, H

2 PAL I

3 PAL D, K 4 SECAM B, G 5 SECAM D, K

6 SECAM K1

14 SECAM I

VHF BAND

UHF BAND

CATV

Receiving Stereo System NICAM I, NICAM B/G, NICAM D,

Tuning System Frequency synthesizer

High Voltage 31.0 ± 1.0 kV at zero beam

21-69 (PAL G,H,I/SECAM G,K,K1)

2-12 (PAL/SECAM B, K1)

0-12 (PAL B AUST.)

1-9(PALBN.Z.)

1-12 (PAL/SECAM D)

1-12 (NTSC M Japan)

2-13 (NTSC M U.S.A.)

28-69 (PAL B AUST.)

13-57 (PAL D,K)

13-62 (NTSC M Japan)

14-69 (NTSC M U.S.A.)

S1-S20 (OSCAR)

1-125 (U.S.A. CATV)

C13-C49 (JAPAN)

S21-S41 (HYPER)

Z1-Z37 (CHINA)

4A, 9A (AUST.)

A2 (German)

Auto Search Tuning

POSITION : 100 Position

DIRECT : 125 Position

current

TX-29P250T

Picture Tube Overall Picture tube measured

diagonally : 72 cm

Viewable Picture tube measured

diagonally : 68 cm

CRT Deflection : 104°

Audio Output 64 W [2-way, 4-speaker; 12 W +

12 W, AFB woofer; 12 W External

Speakers; 7 W + 7 W + 7 W + 7

W] (10% THD) Headphones 3.5 mm Plug Aerial Impedance 75 Ω Un balanced Coaxial

Video/Audio/Component Terminals

AV 1, 2, 3, 4

S-Video In Y:1 Vp-p, 75 Ω

C:0:3 Vp-p 75 Ω

DVD (Y/P

B/PR

Video In 1 Vp-p, 75 Ω

Audio In Approx 0.4 V 47 kΩ

Monitor Out

VideoOut1Vp-p,75Ω

Audio Out Approx. 0.4 V 1 kΩ

AV1 IN (Rear) : S-Video, Video, Audio L/R terminals AV2 IN (Rear) : Video or Y/P

B/PR

Audio L/R terminals AV3 IN (Front) : S-Video, Video, Audio L/R RGB terminals AV4 IN (Rear) : Video or Y/P

B/PR

, Audio L/R terminals Digital Audio input : coaxial, optical

RGB Input High-DENSITY D-sub 15 pin

31.5 kHz/60 Hz (640x480 dot) and

31.5 kHz/70 Hz (640x400 dot)

Remote Control Transmitter R6 (AA) Battery x 2

75 Ω coaxial aerial plug Dimensions (WxDxH) 652 mm x 517 mm x 612 mm Weight (Mass) 53 kg (Net) Note:

Design and Specifications are subject to change without notice. Weight and Dimensions shown are approximate.

)

CONTENTS

Page Page

1 Safety Precautions

1.1. General Guide

1.2. Leakage Current Cold Check

1.3. Leakage Current Hot Check (See Fig. 1)

1.4. X-Radiation

2 SERVICE HINTS

2.1. HOW TO REMOVE THE REAR COVER

2.2. LOCATION OF CONTROLS

2.3. HOW TO MOVE THE CHASSIS INTO SERVICE POSITION

2.4. HOTEL MODE

2.5. Service Position for DG-Board

3 SELF CHECK 4 SERVICE MODE FUNCTION

4.1. HOW TO ENTER SERVICE 1

4.2. HOW TO ENTER SERVICE 2

5 ADJUSTMENT PROCEDURE

5.1. VOLTAGE CONFIRMATION

5.2. E.H.T CHECK

5.3. SUB CONTRAST

4 4 4 4

6 6

6 6 7

8 9

9 9

13 13 13

5.4. SUB TINT

5.5. SUB COLOUR

5.6. SECAM BLACK LEVEL

5.7. VRS ADJUSTMENT

5.8. COLOUR PURITY

5.9. CONVERGENCE

5.10. CUT OFF

5.11. WHITE BALANCE

5.12. Focus

5.13. Geomagnetic

5.14. SUB BRIGHT

6 DEFLECTION ADJUSTMENT

6.1. V-ADJUSTMENT/CONFIRMATION (4:3 MODE)

6.2. H-DEFLECTION CONFIRMATION/ADJUSTMENT (4:3 MODE)

6.3. PINCUSSION ADJUSTMENT/CONFIRMATION (4:3 MODE)

6.4. V LINIALITY ADJUSTMENT / CONFIRMATION (4:3 MODE)

14 15 15 16 17 17 18 19 19 19 19

TX-29P250T

6.5. DEFLECTION (16:9 MODE) ADJUSTMENT / CONFIRMATION

6.6. 525p DEFLECTION ADJUSTMENT / CONFIRMATION

6.7. 625p DEFLECTION ADJUSTMENT

6.8. VGA480 / 60 Hz DEFLECTION ADJUSTMENT / CONFIRMATION

6.9. VGA400 / 70 Hz DEFLECTION ADJUSTMENT / CONFIRMATION

6.10. TABLE 1

7 LOCATION OF LEAD WIRING 8 CONDUCTOR VIEWS

8.1. A-Board

8.2. 8.2 D-Board

8.3. 8.3 DG-Board

8.4. DP-Board

8.5. GK-Board

8.6. DF-Board and GM-Board

8.7. H-Board and L-Board

8.8. U-Board and Z-Board

9 BLOCK DIAGRAM

9.1. POWER BLOCK DIAGRAM

9.2. CONTROL BLOCK DIAGRAM

9.3. AUDIO BLOCK DIAGRAM

9.4. VIDEO BLOCK DIAGRAM

9.5. IC BLOCK DIAGRAM

10 SCHEMAT IC DIAGRAMS

10.1. SCHEMATIC DIAGRAM NOTES 24 24 25

10.2. A-BOARD (1/5) SCHEMATIC DIAGRAMS

10.3. A-BOARD (2/5) SCHEMATIC DIAGRAMS

10.4. A-BOARD (3/5) SCHEMATIC DIAGRAMS

10.5. A-BOARD (4/5) SCHEMATIC DIAGRAMS 25

10.6. A-BOARD (5/5) SCHEMATIC DIAGRAMS

10.7. D-BOARD (1/2) SCHEMATIC DIAGRAMS 26 27

28 31

31 34 36 38 39 40 41 42

43 45 46 48 49

10.8. D-BOARD (2/2) SCHEMATIC DIAGRAMS

10.9. DF-BOARD SCHEMATIC DIAGRAM

10.10. DG-BOARD (1/4) SCHEMATIC DIAGRAMS

10.11. DG-BOARD (2/4) SCHEMATIC DIAGRAMS

10.12. DG-BOARD (3/4) SCHEMATIC DIAGRAMS

10.13. DG-BOARD (4/4) SCHEMATIC DIAGRAMS

10.14. DP-BOARD (1/2) SCHEMATIC DIAGRAMS

10.15. DP-BOARD (2/2) SCHEMATIC DIAGRAMS

10.16. GK-BOARD SCHEMATIC DIAGRAMS

10.17. GM-BOARD SCHEMATIC DIAGRAMS

10.18. H-BOARD SCHEMATIC DIAGRAMS

10.19. L-BOARD (1/2) SCHEMATIC DIAGRAMS

10.20. L-BOARD (2/2) SCHEMATIC DIAGRAMS

10.21. U-BOARD (1/2) SCHEMATIC DIAGRAMS

10.22. U-BOARD (2/2) SCHEMATIC DIAGRAMS

10.23. Z-BOARD (1/2) SCHEMATIC DIAGRAMS

10.24. Z-BOARD (2/2) SCHEMATIC DIAGRAMS

11 PARTS LOCATION

55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

TX-29P250T

1 Safety Precautions

1.1. General Guide

1. It is advisable to insert an isolation transformer in the AC supply before servicing a hot chassis.

2. When servicing, observe the original lead dress, especially the lead dress in the high voltage circuits. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

3. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers, shields, and isolation R-C combinations, are properly installed.

4. When the receiver is not to be used for a long period of time, unplug the power cord from the AC outlet.

3. Measure the resistance value, with an ohmmeter, between the jumper AC plug and each exposed metallic cabinet part on the receiver, such as screw heads, aerials, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between

ΩΩΩΩ

and 20 M

return path to the chassis, the reading must be infinite.

ΩΩΩΩ

. When the exposed metal does not have a

1.3. Leakage Current Hot Check

(See Fig. 1)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a 2kΩ, 10 W resistor in series with an exposed metallic part on the receiver and an earth such as a water pipe.

3. Use an AC voltmeter, with high impedance type, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Potential, as high as is in operation. Operation of the receiver without the rear cover involves the danger of a shock hazard from the receiver power supply. Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment. Always discharge the anode of the picture tube to the receiver chassis before handling the tube.

6. After servicing make thefollowing leakage current checks to prevent the customer from being exposed to shock hazards.

32.0

kV is present when this receiver

1.2. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Turn on the receiver’s power switch.

5. Reverse the AC plug inthe ACoutlet and repeat each of the above measurements.

6. The potential any point should not exceed case of a measurement being outside of the limits specified, there is a possibility of a shock hazard, and the receiver should be repaired and rechecked before it is returned to the customer.

1.0 V rms

. In the

1.4. X-Radiation

Warning :

1. The potential sources of X-Radiation in TV sets are the EHT section and the picture tube.

2. When using a picture tube test rig for service, ensure that

TX-29P250T

the rig is capable of handling

32.0 kV

without causing X-

Radiation.

Note:

It is important to use an accurate periodically calibrated

high voltage meter.

1. Set the brightness to minimum.

2. Measure the High Voltage. The meter reading should indicate

31.0 ± 1 kV

. If the meter indication is out of tolerance, immediate service and correction is required to prevent the possibility of premature component failure.

3. To prevent the possibility of X-Radiation, it is essential to use the specified picture tube.

TX-29P250T

2 SERVICE HINTS

2.1. HOW TO REMOVE THE REAR COVER

1. Remove the 9 screws as shown in Fig. 1.

Fig. 1

2.2. LOCATION OF CONTROLS

Fig. 2

2.3. HOW TO MOVE THE CHASSIS INTO SERVICE POSITION

2.4. HOTEL MODE

Purpose

1. At Hotels, this Mode prevents the customer from changing the TV preset data such as Channel preset data.

1. Hold and lift the rear of the chassis and gently pull the chassis towards you as shown in Fig. 3

2. Release the respective wiring clips and rotate the chassis vertically through 90° anticlockwise.

3. After servicing replace the bead clamper and ensure all wiring is returned to its original position before returning the receiver to the customer.

Note: This Mode is useful for Hotels. You should not get into “Hotel mode” with Normal use.

Operation

1. To get into “Hotel Mode”, press the remote control “Recall” button and Channel up “[+/ simultaneously, after setting the “Off-Timer” mode.

2. In this mode, the Channel up and down Function will be enabled as normal and the maximum volume level for this mode is set at the current volume level, ie the setting at the

]” key on the TV set

TX-29P250T

level before entering the mode. However, other functions will be disabled.

To exit this mode

, exit “Off-Timer” mode and the “Volume

Down [-/ * This information is informed by Service Manual only.

]” key simultaneously.

2.5. Service Position for DG-Board

Note: Extension cable kit for DG Board is supplied as service fixtures and tools. (Part No. TZSC07024)

TX-29P250T

3 SELF CHECK

1. Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.

2. To get into the Self-Check mode, press the down n [-/ time pressing the HELP button on the remote control and the screen will show:

] button on the customer controls at the front of the set, at the same

If the CCU ports have been checked and found to be incorrect or not located then “--” will appear in place of “O.K.”.

TX-29P250T

4 SERVICE MODE FUNCTION

MPU controls the functions switching for each IIC through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Mode.

4.1. HOW TO ENTER SERVICE 1

1. In sound menu, set BASS to MAX and set TREBLE to MINIMUM.

2. Simultaneously press INDEX button on remote control and VOLUME DOWN button [ - ] on the TV set.

4.2. HOW TO ENTER SERVICE 2

1. Set the channel to CH99.

2. Press HOLD button on remote control. Note: To exit Service mode, press N or Power button on remote control.

TX-29P250T

5 ADJUSTMENT PROCEDURE

5.1. VOLTAGE CONFIRMATION

Item/Preparation Adjustment Procedure

1. Operate the TV set.

2. Set controls : Bright Minimum Contrast Minimum Volume Minimum

TX-29P250T

1. TPD15 : 144.8 ± 1V (D-Board)

2. TPD13 : 14.6 ± 1V (D-Board)

3. TPD 8 : 7.4 ± 0.5V (D-Board)

4. TPD 9 - TPD 11 : 34.0 ± 1.5V (D-Board)

5. TPD10 : 15.5 ± 1V (D-Board)

6. C864 (-) : -15.7 ± 1V (D-Board)

7. Pin 15 of connector D2 : 31 ± 2V (D-Board)

8. TPD32 : 224 ± 10V (D-Board)

9. Pin 2 of IC1252 : 2.5 ± 0.25V (A-Board)

10. Pin 3 of IC1252 : 3.3 ± 0.3V (A-Board)

11. Pin 3 of IC1252 : 12 ± 0.6V (A-Board)

12. Pin 2 of IC1252 : 9.0 ± 0.4V (A-Board)

13. Pin 3 of IC1252 : 8.0 ± 0.4V (A-Board)

14. Pin 2 of IC1252 : 5.0 ± 0.4V (A-Board)

15. Pin 2 of IC1252 : 3.5 ± 0.2V (A-Board)

16. Pin 2 of IC1252 : 3.5 ± 0.2V (A-Board)

5.2. E.H.T CHECK

Item/Preparation Adjustment Procedure

1. Receive an RF signal, window or crosshatch pattern.

2. Set the Brightness and Contrast to minimum (0 Beam)

3. Connect the High Voltage Voltmeter to the CRT ANODE CAP.

4. The set should be switched to AV (no input) contrast and brightness minimum.

5.3. SUB CONTRAST

Item/Preparation Adjustment Procedure

1. Receive PAL colour bar pattern

2. Connect oscilloscope to A21 pin 3.

3. Set controls:

BRT................CENTER

COLOUR........CENTER

CONTRAST....MAX

AI....................OFF

1. Check the EHT voltage is (31.0±1.0) kV.

2. Switch from AV mode to TV.

3. With the Brightness and the contrast controls MAX, check that the high voltage does not drop more than 3.0 kV from the above measurement with R.F. signal.

1. Adjust Sub Contrast (Service 1) : A=3.5± 0.1V

Fig. 1

2. Adjust Video gain 2 (Service 1) so that Sub picture level B becomes as same as Main picture level A.

Fig. 2

TX-29P250T

5.4. SUB TINT

Item/Preparation Adjustment Procedure

1. Receive a 3.58 MHz NTSC rainbow pattern

2. Connect oscilloscope to A21 pin 6.

3. Set controls:

BRT................CENTER

COLOUR........CENTER

CONTRAST....MAX

NTSC TINT.....CENTER

AI....................OFF

1. Adjust Sub NTSC Tint so that the peak of level of waveform is similar to Fig. 3

Fig. 3

2. Receive the Rainbow pattern (3.58 MHz NTSC) on both of Main and Sub pictures.

3. Adjust Sub NTSC TInt 2 so that the peak of level of waveform is similar to Fig. 4

Fig. 4

5.5. SUB COLOUR

Item/Preparation Adjustment Procedure

1. Receive a 3.58 MHz NTSC rainbow pattern

2. Connect oscilloscope to A21 pin 3.

3. Set controls:

BRT................CENTER

COLOUR........CENTER

CONTRAST....MAX

AI....................OFF

5.6. SECAM BLACK LEVEL

Item/Preparation Adjustment Procedure

1. Receive SECAM white pattern

2. Connect oscilloscope to A44 pin 39.

3. Set controls:

BRT................CENTER

COLOUR........CENTER

CONTRAST....MAX

AI....................OFF

TX-29P250T

1. Adjust Sub Colour: A=3.1±0.5V

Fig. 5

1. Adjust SECAM B-Y so that H-blanking time and colour center are equal level.

Fig. 6

2. Connect oscilloscope to A44 pin 41.

3. Adjust SECAM R-Y OUT so that H-blanking time and colour cente are equal level.

Fig. 7

4. Connect oscilloscope to A44 pin 39.

5. Receive SECAM white pattern on both Main and Sub picture.

6. Adjust Sub SECAM B-Y so that H-blanking time and colour center are equal level.

Fig. 8

7. Connect oscilloscope to A44 pin 41.

8. Adjust Sub SECAM R-Y so that H-blanking time and colour center are equal level.

Fig. 9

TX-29P250T

5.7. VRS ADJUSTMENT

1. PREPARATION a. Set DY to CRT not to tilt up and down and left and right

deflection. (Fig. 1)

b. Set CY to CRT and set CY magnet primarily.

Pur Mg : Set Pur Mg that 2 magnets are vertical position. VRS Mg : Set VRS Mg that 2 magnets are side position.

c. Set geomagnetic correction DAC [0].

2. ADJUSTMENT a. Receive the white balance pattern. b. Adjust V-CENTER. c. Set R,B CUT OFF to minimum (0), and set G CUT OFF

to center (511). d. Receive the aging pattern. e. Set 2 magnet of vertical position to up and down equally

so that center part of CRT. (Fig. 3)

Fig. 2

Fig. 1

Fig. 3

TX-29P250T

5.8. COLOUR PURITY

1. Operate the TV set for over 60 minutes.

2. Receive a purity pattern signal. (white pattern)

3. Set Bright and Contrast controls to their maximum positions.

4. Set V-POS to 128.

5. Adjust roughly the static convergence magnets.

6. Fully degauss the picture tube using an external degaussing coil.

7. Loosen a clamp screw for the deflection yoke and move the deflection yoke as close to the purity magnet as possible.

8. Adjust the purity magnet so that a vertical green field is obtained at the center of the screen.

9. Slowly press the deflection yoke and set it where a uniform green field is obtained.

3. ADJUSTMENT a. Static convergence Adjustment

a. Make sure that magnets are positioned shown in

Fig. 1.

b. Adjust 4-pole magnets (Fig. 1) to align center dots of

R and B and adjust 6-pole magnets to align center dots to G.

c. After adjustment, secure magnets with magnet lock

of white lacquer.

*Beams move with rotating when static magnets are turned. Rotational reduce of beams differs by angle of two magnets. Therefore, repeat magnet adjustments several times so that all are aligned completely.

10. Adjust roughly the Low Light controls and make sure that a uniform white field is obtained.

11. Tighten the clamp screw.

5.9. CONVERGENCE

1. INSTRUMENT a. Helmhortz device

2. PREPARATION a. Set the Helmhortz device to local magnetic field.

Horizontal : 0 ± 0.03 x10 b. Receive the cross hatch pattern. c. Picture menu : DYNAMIC Normal and adjust BRIGHT

DAC until gray portion of cross hatch. d. Set DY to CRT not to tilt (up and down and left and

right).

-4

Fig. 1

b. YHC, YV, XV, Adjustment (Fig. 2)

a. Adjust so that Static and Dynamic convergence is

best with YHC, VR, YV and XV coil. In case of static convergence is tilted, repeat (1) Static convergence Adjustment.

Fig. 2

c. Dynamic convergence Adjustment

a. When dynamic convergence is bad, fixing permalloy

between neck and DY so that dynamic convergence is best.

4. Confirm that left upper side line is straight. When left upper side line isn’t straight, put magnet on DY and adjust the left upper side line to straight.

TX-29P250T

5.10. CUT OFF

Preparation

1. Receive a colour bar signal with colour “OFF”, and operate the TV set more than 15 minutes.

2. Set the picture menu to “DYNAMIC NORMAL” and the AI to off.

3. Connect an oscilloscope to TPL7 with DC mode.

4. Set the TV set to Service Mode 1.

5. Screen VR : Min.

6. Set the data level of SUB BRIGHT, R, G, B-CUTOFF and R, G, B-DRIVE to the table values.

Display Date Level R High (R-CUT OFF) 128 G High (G-CUT OFF) 128 B High (B-CUT OFF) 128 R Low (R-DRIVE) 175 G Low (G-DRIVE) 175 B Low (B-DRIVE) 175 SUB BRIGHT 128

Adjustment

1. Select G-CUTOFF adjustment mode and collapse vertical scan.

2. Adjust G-CUTOFF control to become the DC=0V to video level at 180V as shown below.

3. Slowly turn the screen control clockwise until a green colour horizontal line appears on the picture tube. This is the setting point for the screen control. Note that do not adjust the G-CUTOFF setting in the following procedure.

4. Adjust the remained R and B-CUTOFF controls so as to get a white horizontal line on the screen.

8. Wedge A shown in Fig. 1 should be fixed within a range of 45° to the left of the vertical line as shown.

9. After inserting wedge A, insert wedges B, C and D. The wedges should be set 90° apart from each other.

10. Be certain that the four wedges are firmly fixed and the deflection yoke is tightly clamped in place otherwise the deflection yoke may shift its position and cause a loss of convergence and purity.

5. Return to full field SCAN by pushing the position 5 key on the remote control.

6. Adjust the R-Drive and B-Drive controls as to obtain uniform white on the white bar of the greyscale pattern.

7. Confirm correct B/W rendition and greyscale tracking or repeat CUTOFF and drive control setup. Note: Write down the original value for each address adjustment before adjusting anything.

5.11. WHITE BALANCE

Item/Preparation Adjustment Procedure

1. Select Service Mode 1.

2. Aging should have been performed over 30 minutes

3. Receive the white balance pattern.

4. Picture menu : DYNAMIC NORMAL AI : OFF

5. Degauss the CRT face.

6. Connect the photo sensors of the Colour Analyser to the CRT. Note: CRT cut off adjustment is completed.

1. Adjustment of Low Light a. Adjustment SUB BRIGHT, so that “Y” axis indicates 6.5 b. Adjustment R-CUT OFF, so that y axis indicates 0.267. c. Adjustment B-CUT OFF, so that x axis indicates 0.269.

2. Adjustment of High Light a. Adjust SUB BRIGHT, so that “Y” axis indicates 150. b. Adjust R-DRIVE, so that y axis indicates 0.272. c. Adjust B-DRIVE, so that x axis indicates 0.2.

5.12. Focus

Item/Preparation Adjustment Procedure

1. Receive a cross-hatch pattern signal. 1. Adjust the Focus to thin all the Lines by Focus 1 Control. (Prefer to thin the Vertical Lines than Horizontal Line.)

2. Adjust the Focus to thin the Horizontal Lines by Focus 2 Control.

TX-29P250T

5.13. Geomagnetic

Item/Preparation Adjustment Procedure

1. Demagnetize the GM-Board around its perimeter with the Demagnetizer.

5.14. SUB BRIGHT

Item/Preparation Adjustment Procedure

1. Receive the sub bright pattern.

2. Picture Menu:

BRT..................CENTER

COLOUR..........CENTER

CONT...............MAX

3. Connect the photo sensor of the Colour Analyser to the center of the CRT.

1. Connect a DC voltage meter to TPGM1-2pin (GM-Board)

2. Adjust the R4863 (GM-Board) so that the Vx Out at TPGM12pin becomes 4.9 ± 0.05 V

3. Connect a DC voltage meter to TPGM1-1pin (GM Board).

4. Adjust the R4861 (GM-Board) so that the Vy Out at TPGM11pin becomes 4.9 ± 0.05 V

1. Adjust Sub Bright so that brightness level becomes 1 ± 0.2 cd/m

TX-29P250T

6 DEFLECTION ADJUSTMENT

6.1. V-ADJUSTMENT/CONFIRMATION (4:3 MODE)

6.1.1. V-HOLD CONFIRMATION

1. Receive PAL monoscope pattern

2. Set scan mode to 100Hz by remote control key

3. Set aspect to 4:3

4. Confirm that V-hold is normal

5. Set the fix data in the table 1.

6.1.2. V-CENTER ADJUSTMENT (4:3 MODE)

6.1.2.1. 100I V-POS ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to 100Hz by remote control key.

3. Adjust V-POS (100i / 4:3) so that the scale of the top and bottom side is equal.

6.1.2.2. 120i V-POS ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to 100Hz by remote control key.

3. Adjust V-POS (120i / 4:3) so that the scale of the top and bottom side is equal.

6.1.2.3. 50p V-POS ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to progressive by remote control key.

3. Adjust V-POS (50p / 4:3) so that the scale of the top and bottom side is equal.

6.1.2.4. 60p V-POS ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to progressive by remote control key.

3. Adjust V-POS (60p / 4:3) so that the scale of the top and bottom side is equal.

Fig. 1

6.1.3. V-HEIGHT ADJUSTMENT (4:3 MODE)

6.1.3.1. 100i V-AMP ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust V-AMP (100i / 4:3) so that B, D (Fig. 2) is 2.1± 0.1.

6.1.3.2. 120i V-AMP ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust V-AMP (120i / 4:3) so that B, D (Fig. 2) is 2.1± 0.1.

6.1.3.3. 50p V-AMP ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to progressive by remote control key.

3. Adjust V-AMP (50p / 4:3) so that B, D (Fig. 2) is 2.1± 0.1.

6.1.3.4. 60p V-AMP ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to progressive by remote control key.

3. Adjust V-AMP (60p / 4:3) so that B, D (Fig. 2) is 2.1± 0.1.

TX-29P250T

Fig. 2

6.2. H-DEFLECTION CONFIRMATION/ADJUSTMENT (4:3 MODE)

6.2.1. H-HOLD CONFIRMATION

1. Receive PAL monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Set aspect to 4:3.

4. Confirm that H-hold is normal.

6.2.2. H-CENTER ADJUSTMENT (4:3 MODE)

6.2.2.1. 100i H-POS ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust H-POS (100i / 4:3) so that the horizontal position is center of CRT.

6.2.2.2. 120i H-POS ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust H-POS (120i / 4:3) so that the horizontal position is center of CRT.

6.2.3. H-WIDTH ADJUSTMENT (4:3 MODE)

6.2.3.1. 100i H-AMP ADJUSTMENT

1. Receive PAL monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust H-AMP (100i / 4:3) so that both of the edges are within A, B=2.5 ± 0.2.

6.2.3.2. 120i H-AMP ADJUSTMENT

1. Receive NTSC monoscope pattern.

2. Set scan mode to 100 Hz by remote control key.

3. Adjust H-AMP (120i / 4:3) so that both of the edges are within A, B=2.5 ± 0.2.

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