Panasonic TX-29E50D, TX-29E50B, TX-29PS12D, TX-29PS12F, TX-29PS12P Service Manual

SPECIFICATIONS

Order No: PCZ0510103C2

TX-29E50D

TX-29E50D/B

TX-29PS12D

TX-29PS12F

TX-29PS12P

CP-830FP Chassis

Power Source: 220-240V a.c.,50Hz

Power Consumption: 100W

Stand-by Power Consumption: 1,5W

Aerial Impedance: 75Ω unbalanced, Coaxial Type

Receiving System: PAL-I, B/G, D/K, PAL-525/60

SECAM B/G, D/K, L,L’ M.NTSC (AV only) NTSC (AV only)

Receiving Channels:

VHF E2-E12 VHF H1-H2(ITALY) VHF A-H (ITALY) VHF R1-R2 VHF R3-R5 VHF R6-R12 UHF E21-E69 CATV (S01-S05) CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10) CATV S21-S41 (HYPERBAND)

Intermediate Frequency:

Video/Audio Video 38,9MHz, 33,9Mhz Sound 33,4MHz (B/G), 33,16MHz (A2) 33,05MHz (NICAM B/G,D/K,L) 32,4MHz (D/K), 32,66MHz (CZ STEREO) 40,4MHz (L’), 39,75MHz (L’NICAM) Colour 34,47MHz (PAL)

34,5MHz, 34,65MHz (SECAM)

38,3MHz, 38,15MHz (SECAM L’)

Terminals:

AV2 IN Video (21pin) 1V p-p 75Ω Audio(21pin) 500mV rms 10kΩ S-Video IN Y: 1V p-p 75Ω (21pin) C: 0,3V p-p 75Ω

AV2 OUT Video (21pin) 1V p-p 75Ω Audio (21pin) 500mV rms 1kΩ

AV3 FRONT Audio (RCAx2) 500mV rms 10kΩ Video (RCAx1) 1V p-p 75Ω S-Video IN Y: 1V p-p 75Ω C: 0,3V p-p 75Ω

High Voltage: 29kV ± 1kV

Picture Tube: A68ERF182X44 68cm

Audio Output: 2x7W RMS, 2x14W MPO,

8Ω impedance

Headphones: 8Ω impedance

Accesories supplied: Remote Control

2xR6 (UM3) Batteries

Dimensions:

Height: 585 mm Width: 776 mm Depth: 533 mm Net weight: 44,0 kg

AV1 IN Video (21pin) 1V p-p 75Ω Audio(21pin) 500mV rms 10kΩ RGB (21pin) 0,7V p-p 75Ω AV1 OUT Video (21pin) 1V p-p 75Ω Audio (21pin) 500mV rms 1kΩ

Specifications are subject to change without notice. Weights and dimensions shown are approximate.

CONTENTS

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SERVICE HINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

VOLTAGE CHECK AND OPTION BYTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

WAVEFORM PATTERN TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ALIGNMENT SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

PARTS LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

CONDUCTOR VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SAFETY PRECAUTION

GENERAL GUIDE LINES

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

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

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

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

5. Potentials as high as 30kV are 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 familiar with the precautions necessary when working on high voltage equipment. Always discharge the anode of the tube.

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

LEAKAGE CURRENT COLD CHECK

1. Unplug the a.c. cord and connect a jumper between the two prongs of the plug.

2. Turn on the receiver’s power switch.

3. Measure the resistance value with an ohmmeter, between the jumpered a.c. 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 4M ohm and 20M ohm. When the exposed metal does not have a return path to the chassis, the reading must be inﬁnite.

LEAKAGE CURRENT HOT CHECK

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

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

3. Use an a.c. voltmeter with high impedance to measure the potential across the resistor.

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

5. Reverse the a.c. plug at the outlet and repeat each of the previous measurements.

6. The potential at any point should not exceed 1,4 Vrms. In case a measurement is outside 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.

HOT CHECK CIRCUIT

a.c. VOLTMETER

2k 10 Watts

TO INSTRUMENT’S EXPOSED METALLIC PARTS

Fig.1

WATER PIPE (EARTH)

X-RADIATION WARNING

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

2. When using a picture tube test jig for service, ensure that the jig is capable of handling 30kV 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 should indicate: 29kV ± 1kV. 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 any X-Radiation possibility, it is essential to use the speciﬁed tube.

SERVICE HINTS

How to remove the rear cover

1. Remove the 10 screws as shown in Fig. 2.

SCREWS

Fig. 2

LOCATION OF CONTROLS

MAIN BOARD CONTROL BOARD

SCREEN FOCUS

CRT Board

Fig. 3

VOLTAGE CHECK

SMT 2094.0074*

MAIN B+ Voltage [V] 129 ± 1 V D820

14V [V] 13 ± 0,5 V D831

8V [V] 7,4 ± 0,5 V D830

5V [V] 4,6 ± 0,5 V D870

SOUND B+ [V] 13,2 ± 0,5 V *Volume Min.

12,8 ± 0,5 V *Volume Max.

FBT 1302.2002*

High Voltage [V]

Retrace time 5,26 ± 0,2 us

Vcp [V] 1210 ± 20 V

Video Voltage [V] 180 ± 5%

14V line [V] 14 ± 5%

52V line [V] 52 ± 5%

Heater Voltage [Vrms] 6,2 ± 5%

G2 SCREEN / CUTOFF

1. Receive a Color bar pattern

2. set the TV into Service mode.

28,08 ± 0,5 V load Max.

29,44 ± 0,5 V load Min.

Adjust the screen VR till G2-SCREEN get 32(31~33).

test conditions ; Input voltage : 230VAC TV set on ON mode (if nothing speciﬁed) Picture : colour bar - Dynamic Sound : 1Khz - (mode : Music)

test conditions ; Input voltage : 230VAC Ct = 11nF Cs = 0,36uF L linearity: TRL-040F CRT : A68ERF182X044/M

3. Select G2 SCREEN item.

OPTION BYTES

MODEL OPTION BYTE 1 OPTION BYTE 2

TX-29E50D 0 0 1 1 1 0 0 0 0 x 38 0 1 1 0 1 0 1 1 0 x 6B

TX-29E50D/B 0 0 1 1 1 0 0 0 0 x 38 0 1 1 0 1 0 1 1 0 x 6B

TX-29PS12D 0 0 1 1 1 0 0 0 0 x 38 0 1 1 0 1 0 1 1 0 x 6B

TX-29PS12F 1 0 1 1 1 0 0 0 0 x B8 0 1 1 0 1 0 1 1 0 x 6B

TX-29PS12P 1 0 1 1 1 0 0 0 0 x B8 0 1 1 0 1 0 1 1 0 x 6B

WAVEFORM PATTERN TABLE

VERTQ I502 pin38

H-PULSE Q401 base

VERT DRIVE I301 pin10

FBI/SCO I502 pin30

H OUT I502 pin23

R OUT I502 pin42

G OUT I502 pin43

SDA I501 pin6

B OUT I502 pin44

VIDEO OUT I501 pin52

SCL I501 pin13

CONDITIONS: Contrast: MAX, Brightness: MID, Colour: MID, Sharpness: MID

ALIGNMENT SETTINGS

(The ﬁgures below are nominal and used for representative purposes only.) To access Service Mode select program position 99 and set sharpness to minimum. Press “MUTE” button on remote control and at the same time press the „∨” button on the customer controls at the front of the TV, this will place the TV set into Service Mode. Press ∧/∨buttons to step up / down through the functions. Press + / - buttons to alter the function values.

To exit Service Mode press „MENU” button.

1 PARABOLA + 309

2 HOR WIDTH - 79

3CORNER T - 89

4 CORNER B - 65

5 HOR PARAL 0

6 V. LINEAR - 10

7 EW-TRAPEZ + 42

8 S CORRECT + 111

9 VERT CENT - 1

10 VERT SIZE - 8

11 SHIPPING OFF

12 HOR CEN - 140

13 RED GAIN + 345

14 GRN GAIN + 320

15 BLUE GAIN + 330

16 RED BIAS + 152

17 GRN BIAS + 288

18 AGC LEVEL + 45

19 G2 SCREEN + 32

20 AFT + 32

21 Bit0 ~ Bit7

22 Bit0 ~ Bit7

23 Bit0 ~ Bit7 0 x FF

24 AVL OFF

Setting in indication

Note : All settings are approximate

Settings / Special features

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