Panasonic TX-29P150T Schematic

Colour Television

TX-29P150T

MD3 Chassis

Order No. MTV0201145C3

Specifications

Power Source AC Auto 110-240 V, 50/60 Hz

Power Consumption 197 W

Standby condition : 11 W

Receiving System

Function

Reception of broadcast transmissions and Playback from Video Cassette Tape Recorders

Playback from special VCRs

Playback from Special Disc Players and Special VCRs

Receiving Channels Regular TV

NTSC M (NTSC 3.58/4.5 MHz

NTSC 3.58/6.5 MHz)

SECAM 60 Hz/5.5 MHz SECAM 60 Hz/6.0 MHz SECAM 60 Hz/6.5 MHz

NTSC 50 Hz/4.5 MHz

21 Systems

PAL B, G, H

PAL I

PAL D, K SECAM B, G SECAM D, K

SECAM K1

NTSC 4.43/5.5 MHz NTSC 4.43/6.0 MHz NTSC 4.43/6.5 MHz NTSC 3.58/5.5 MHz NTSC 3.58/6.0 MHz

SECAM I

PAL 60 Hz/5.5 MHz PAL 60 Hz/6.0 MHz PAL 60 Hz/6.5 MHz

VHF BAND

UHF BAND

CATV

Receiving Stereo System NICAM I, NICAM B/G, NICAM D, A2

Tuning System Frequency synthesizer

High Voltage 31.0 ± 1.0 kV at zero beam current

Picture Tube Overall Picture tube measured

Audio Output 8W x 2 (Speaker) 14W (Woofer)

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

2-12 (PAL/SECAM B, K1)

0-12 (PAL B AUST.)

1-9 (PAL B N.Z.)

1-12 (PAL/SECAM D)

1-12 (NTSC M Japan)

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

28-69(PALBAUST.)

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)

5A, 9A (AUST.)

(German)

Auto Search Tuning

POSITION : 100 Position

DIRECT : 125 Position

diagonally : 73 cm

Viewable Picture tube measured

diagonally : 68 cm

CRT Deflection : 104°

TX-29P150T

Headphones 3.5 mm Plug

Aerial Impedance 75 Ω Unbalanced 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

Y1.0Vp-p,75Ω

0.7Vp-p, 75Ω

DVD

0.7Vp-p, 75Ω

Video In 1 Vp-p, 75 Ω

Monitor Out

AV1 IN (Rear) : S-Video,

Audio In Approx 0.4 V 47 kΩ

VideoOut1Vp-p,75Ω

Audio Out Approx. 0.4 V 1 kΩ

Video, Audio L/R terminals AV2 IN (Front) : S-Video, Video, Audio L/R RGB Terminals AV3 IN (Rear) : Video, Audio L/R terminals AV4 IN (Rear) : Video or Y/P

, Audio L/R terminals

B/PR

RGB Input High-DENSITY D-sub 15 pin

31.5 kHz/60 Hz (640 x 480 dot) and

31.5kHz/70Hz(640x400dot)

Remote Control Transmitter R6 (AA) Battery x 2

75 Ω coaxial aerial plug

Dimensions (W x D x H) 699 mm x 509 mm x 584 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. HOW TO MOVE THE CHASSIS INTO SERVICE

POSITION

2.3. HOTEL MODE

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

5.4. SUB TINT

5.5. SUB COLOUR

5.6. VRS ADJUSTMENT

5.7. COLOUR PURITY

5.8. CONVERGENCE

5.9. CUT OFF

5.10. WHITE BALANCE

5.11. FOCUS

5.12. GEOMAGNETIC

5.13. SUB BRIGHT

6 DEFLECTION ADJUSTMENT

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

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

MODE)

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

6.4. V LINIALITY ADJUSTMENT / CONFIRMATION (4:3

MODE)

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 CONDUCTOR VIEWS

7.1. A-Board

8 SCHEMATIC DIAGRAMS

8.1. SCHEMATIC DIAGRAM NOTES

9 PARTS LOCATION

10 Replacement Parts List

10.1. Replacement Parts List Notes

10.2. Replacement Part List

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.

TX-29P150T

3. Measure the resistance value, with an ohmmeter, between the jumper AC plug and each expose d metallic cabinet part on the receiver, such as screw heads, aerials, connectors, control shafts, etc. When the expose d 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 the following 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.

5. Reverse the AC plug in the AC outlet 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

2. Turn on the receiver’s power switch.

TX-29P150T

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 the rig is capable of handling 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 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.

31.0 ± 1 kV

. If the meter indication is out of

32.0 kV

without causing X-

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. HOW TO MOVE THE CHASSIS INTO SERVICE POSITION

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.

TX-29P150T

2.3. HOTEL MODE

Purpose

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

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, i.e. the setting at the level before entering the mode. However, other functions will be disabled.

To exit this mode

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

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

]” key simultaneously.

]” key on the TV set

TX-29P150T

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-29P150T

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-29P150T

Options

Description

Model option1 00 0E0 b0 1 Colour system (TV) PAL(1)

b1 1 SECAM(1) b2 1 NTSC(1) b3 1 M.NTSC(1) b4 0 Colour system (AV) PAL(1) b5 0 SECAM(1) b6 1 NTSC(1)

b7 1 M.NTSC(1) option2 00 0E1 b0 1 CH Plan ASIA/M.E/HK/UK/CHINA(1)

b1 1 NZ/INDNES(1)

b2 1 AUSTRALIA(1)

b3 1 E.EUROPE(1)

b4 1 SPECIAL(1)

b5 1 AMERICA(1)

b6 1 CATV(1)

b7 1 JAPAN(1) option3 00 0E2 b0 1 A2 enable 4.5(1)

b1 1 5.5(1)

b2 1 6.0(1)

b3 1 NICAM enable 6.5(1)

b4 0 4.5(1)

b5 0 5.5(1)

b6 0 6.0(1)

b7 0 6.5(1) option4 00 0E3 b0 0 A2 select 6.5MHz 5.742MHz(0) 6.742MHz(1)

b1 1 NICAM priority ASIA/M.E.(1)

b2 0 HK/UK(1)

b3 0 CHINA(1)

b4 0 NZ/INDONESIA(1)

b5 1 AUSTRALIA(1)

b6 1 E.EUROPE(1)

b7 1 SPECIAL(1) option5 00 0E4 b0 0 Virtual Dolby Surround enable(1)

b1 1 NICAM C4 bit enable(1)

b2 1 Noise mute Noise mute enable(1)

b3 1 Monitor out AV1 mute Monitor out AV1 mute(1)

b4 1 SIF 4.5(1)

b5 1 5.5(1)

b6 1 6.0(1)

b7 1 6.5(1)

TX-29P150T

Options

Description

Model option6 00 0E5 b0 1 Reserved Geomagnetic Enable (1)

b1 0 Geomagnetic Sensor Geomagnetic sensor enable (1) b2 0 Geomagnetic Polarity Geomagnetic polarity Plus+(0), Minus-(1) b3 0 P.NR. Enable(1) b4 1 SASO enable SASO enable(1) b5 0 Search speed Slow(1) Fast(0) b6 1 VCR/GAME in search On(0) Off(1)

b7 0 Tuner MACO tuner (0), ALPS tuner (1) option7 00 0E6 b0 0 TEXT enable(1)

b1 1 TEXT TOP TOP enable (1)

b2 1 TEXT language English(1)

b3 1 Cyrillic(1)

b4 1 E.Europe 1(1)

b5 0 E.Europe 2(1)

b6 1 Arabic(1)

b7 0 option8 00 0E7 b0 1 VGA enable(1)

b1 1 Reserved 1080i Enable(1)

b2 0 Reserved ID-1 Enable(1)

b3 0 Australia enable(1)

b4 1 OSD language ARABIC(1)

b5 0 RUSSIAN(1)

b6 1 CHINESE(1)

b7 0 free option9 00 0E8 b0 1 Panasonic LOGO Display(1)

b1 1 MPX status Display(1)

b2 0 Scan mode AUTO for P-NTSC Progressive2(0), Progressive(1)

b3 0 free

b4 0 free

b5 0 free

b6 1 X-ray protection Enable(1)

b7 1 5V detect protection Enable(1) option10 00 0E9 b0 1 free enable(1)

b1 1 OSD language enable(1)

b2 1 Noise mute enable(1)

b3 1 Monitor out AV1 mute(1)

b4 1 free 4.5(1)

b5 1 free 5.5(1)

b6 1 free 6.0(1)

b7 1 Protect 5V detect 6.5(1)

TX-29P150T

Options

Description

Model option11 4E 0EA b0 0 Shop mode enable(1)

b1 1 Full/16.9 display Reserved b2 1 Sub Headphone enable(1) b3 1 Scan mode Blanking Blanking enable(1) b4 0 User aspect 14:9 enable(1) b5 0 NICAM C4 bit enable(1) b6 1 ID-1 enable(1)

b7 0 1080i enable(1) option12 41 0EB b0 1 Asia Asia(1), Europe(0)

b1 0

b2 0 Ireland not use

b3 0 UK not use

b4 0

b5 0 (Reserved for 29 inch etc)

b6 1 Large size 52(1) / 42(0) for PTV, 36(1) / 32(0) for wide, 34(1) / 29(0) for 4:3

b7 0 PTV PTV (1) option13 7A Temporary 0EC b0 0 VDU Version A21 (0), A12 (1)

b1 1 GC Version ES5(0), ES6(1)

b2 0 UV Swap Swap(1)

b3 1 TEXT Enable(1)

b4 1 Main GC ES7 ES7(1), ES5/6(0)

b5 1 Sub GC ES7v ES7(1), ES5/6(0)

b6 1

b7 0 CIP2 without CIP1(0), with CIP1(1)

5 ADJUSTMENT PROCEDURE

5.1. VOLTAGE CONFIRMATION

Item/Preparation Adjustment Procedure

1. +B voltage 1. TPA55 : 144.8 ± 1V

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.

TX-29P150T

2. TPA56 : 12 ± 1V

3. TPA57 : 9 ± 1V

4. TPA : 2.5 ± 0.25V

1. Check the EHT voltage is (32.0 ± 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.

5.3. SUB CONTRAST

Item/Preparation Adjustment Procedure

1. Receive PAL colour bar pattern

2. Connect oscilloscope to A51 pin 48.

3. Set controls:

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

COLOUR........CENTER

CONTRAST....MAX

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

1. Adjust Sub Contrast (Service 1) : A = 3.85 ± 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-29P150T

5.4. SUB TINT

Item/Preparation Adjustment Procedure

1. Receive a 3.58 MHz NTSC rainbow pattern

2. Connect oscilloscope to A51 pin 50.

3. Set controls:

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

COLOUR........CENTER

CONTRAST....MAX

NTSC TINT.....CE NTER

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.

5.5. SUB COLOUR

Item/Preparation Adjustment Procedure

1. Receive a 3.58 MHz NTSC rainbow pattern

2. Connect oscilloscope to A51 pin 48.

3. Set controls:

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

COLOUR........CENTER

CONTRAST....MAX

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

Fig. 4

1. Adjust Sub Colour: A = 3.3 ± 0.5V

Fig. 5

5.6. 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 magnets of vertical position to up and down

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

TX-29P150T

Fig. 2

Fig. 1

Fig. 3

TX-29P150T

5.7. 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 63 DAC.

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.

d. Set DY to CRT not to tilt (up and down and left and

right).

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.

5.8. 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.

-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.

5.9. 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 Data Level R High (R-CUT OFF) 256 G High (G-CUT OFF) 512 B High (B-CUT OFF) 256 R Low (R-DRIVE) 128 G Low (G-DRIVE) 128 B Low (B-DRIVE) 128 SUB BRIGHT 136

TX-29P150T

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.

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