Panasonic TX-29P190T Manual de usuario

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

Power Consumption 197 W

Standby condition: 11 W

Receiving System

Function 21 Systems

Reception of broadcast PAL B, G, H

transmissions and Playback PAL I

from Video Cassette Tape PAL D, K

Recorders SECAM B, G

SECAM D, K

SECAM K1

NTSC M (NTSC 3.58/4.5 MHz

Playback from special NTSC 4.43/5.5 MHz

VCRs NTSC 4.43/6.0 MHz

NTSC 4.43/6.5 MHz

NTSC 3.58/5.5 MHz

NTSC 3.58/6.0 MHz

NTSC 3.58/6.5 MHz)

SECAM I

Playback from Special Disc PAL 60 Hz/5.5 MHz

Players and Special VCRs PAL 60 Hz/6.0 MHz

PAL 60 Hz/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

Receiving Channels Regular TV

VHF BAND 2-12 (PAL/SECAM B, K1)

rights reserved. Unauthorized copying and

distribution is a violation of law.

TX-29P190T

MD3N Chassis

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.)

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

28-69 (PAL B AUST.)

13-57 (PAL D,K)

13-62 (NTSC M Japan)

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

CATV S1-S20 (OSCAR)

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

C13-C49 (JAPAN)

S21-S41 (HYPER)

Z1-Z37 (CHINA)

5A, 9A (AUST.)

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

(German)

Tuning System Frequency synthesizer

Auto Search Tuning

POSITION: 100 Position

DIRECT: 125 Position

High Voltage 31.0 ± 1.0 kV at zero beam current

Picture Tube Overall Picture tube measured

diagonally: 73 cm

Viewable Picture tube measured

diagonally: 68 cm

Colour Television

Specifications

Order No. MTV0501406C3

CRT Deflection: 104°

Audio Output 8W x 2 (Speaker)

Headphones 3.5 mm Plug

Aerial Impedance 75 ΩUnbalanced Coaxial

Video/Audio/Component

AV 1, 2, 3, 4

S-Video In Y:1 Vp-p, 75 Ω

DVD C:0:3 Vp-p 75 Ω

Y1.0Vp-p,75Ω

PB0.7Vp-p, 75Ω

PR0.7Vp-p, 75Ω

Monitor Out Video In 1 Vp-p, 75 Ω

Audio In Approx 0.4 V 47 kΩ

Video Out 1 Vp-p, 75 Ω

Audio Out Approx. 0.4 V 1 kΩ

AV1 IN (Rear): S-Video,

Video, Audio L/R terminals

AV2 IN (Front): S-Video,

1 Safety Precautions 4

1.1. General Guide 4

1.2. Leakage Current Cold Check 4

1.3. Leakage Current Hot Check (See Fig. 1) 4

1.4. X-Radiation 5

2 SERVICE HINTS 6

2.1. HOW TO REMOVE THE REAR COVER 6

2.2. HOW TO MOVE THE CHASSIS INTO SERVICE

POSITION 6

2.3. HOTEL MODE 6

3 SELF CHECK 7

4 SERVICE MODE FUNCTION 8

4.1. HOW TO ENTER SERVICE 1 8

4.2. HOW TO ENTER SERVICE 2 8

5 ADJUSTMENT PROCEDURE 12

5.1. VOLTAGE CONFIRMATION 12

5.2. E.H.T CHECK 12

5.3. SUB CONTRAST 12

5.4. SUB TINT 13

5.5. SUB COLOUR 13

5.6. VRS ADJUSTMENT 14

5.7. COLOUR PURITY 15

5.8. CONVERGENCE 15

5.9. CUT OFF 16

5.10. WHITE BALANCE 17

5.11. FOCUS 17

5.12. GEOMAGNETIC 17

Video, Audio L/R RGB

Terminals

AV3 IN (Rear): Video, Audio

L/R terminals

AV4 IN (Rear): Video or

Y/PB/PR, Audio L/R

terminals

RGB Input High-DENSITY D-sub 15 pin

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

31.5 kHz/70 Hz (640 x 400 dot)

Remote Control Transmitter R6 (AA) Battery x 2

75 Ωcoaxial aerial plug

Dimensions (W x D x H) 758 mm x 515 mm x 582 mm

Weight (Mass) 44 kg (Net)

Note:

Design and Specifications are subject to change without notice.

Weight and Dimensions shown are approximate.

5.13. SUB BRIGHT 17

6 DEFLECTION ADJUSTMENT 18

6.1. V-ADJUSTMENT/CONFIRMATION (4:3 MODE) 18

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

MODE) 18

6.3. EW ADJUSTMENT/CONFIRMATION (4:3 MODE) 19

6.4. V LINIALITY ADJUSTMENT / CONFIRMATION (4:3

MODE) 20

6.5. DEFLECTION (16:9 MODE) ADJUSTMENT /

CONFIRMATION 20

6.6. 525p DEFLECTION ADJUSTMENT / CONFIRMATION

6.7. 625p DEFLECTION ADJUSTMENT 21

6.8. VGA480 / 60 Hz DEFLECTION ADJUSTMENT /

CONFIRMATION 21

6.9. VGA400 / 70 Hz DEFLECTION ADJUSTMENT /

CONFIRMATION 21

6.10. TABLE 1 23

7 CONDUCTOR VIEWS 24

7.1. A-Board 1/2 24

7.2. A-Board 2/2 25

8 SCHEMATIC DIAGRAMS 26

8.1. SCHEMATIC DIAGRAM NOTES 26

8.2. A BOARD 28

8.3. G BOARD 32

8.4. X BOARD 33

8.5. DG BOARD 35

8.6. DG2 BOARD 39

CONTENTS

Page Page

TX-29P190T

8.7. L BOARD 42

8.8. P BOARD 45

8.9. H BOARD 46

9 PARTS LOCATION 48

10 Replacement Parts List 49

10.1. Replacement Parts List Notes 49

10.2. Replacement Part List 50

TX-29P190T

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.

5. Potential, as high as 32.0 kV is present when this receiver

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.

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.

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 4

MΩ

ΩΩ

Ωand 20 MΩ

ΩΩ

Ω. When the exposed metal does not have a

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

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. Reverse the AC plug in the AC outlet and repeat each of the

above measurements.

6. The potential any point should not exceed 1.0 V rms. In the

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.

TX-29P190T

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 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-29P190T

2 SERVICE HINTS

2.1. HOW TO REMOVE THE REAR

COVER

1. Remove the 9 screws as shown in 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.

2.3. HOTEL MODE

Purpose

1. At Hotels, this Mode prevents the customer from changing

the TV preset data such as Channel 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 “[+/ ]” key on the TV set

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

Down [-/ ]” key simultaneously.

* This information is informed by Service Manual only.

TX-29P190T

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

time pressing the HELP button on the remote control and the screen will show:

TX-29P190T

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-29P190T

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