Panasonic tx-32pg30 Service Manual

SPECIFICATIONS

Power Source: 220-240V a.c., 50Hz Power Consumption: 125W Stand-by Power

Consumption: 2.8W Aerial Impedance: 75Ω unbalanced, Coaxial Type Receiving System: PAL I, PAL-525/60

M.NTSC NTSC (AV only)

Receiving Channels: UHF E21-E69 Intermediate Frequency:

Video/Audio

Video 39.5MHz Audio 33.5MHz

32.95MHz (NICAM)

Colour 35.07MHz

Terminals:

AUDIO MONITOR OUT Audio (RCAx2) 500mV rms 1kΩ AV1 IN Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ RGB (21 pin)

AV1 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ

AV2 IN Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ S-Video IN Y: 1V p-p 75Ω (21-pin) C: 0.3V p-p 75Ω

AV2 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ Selectable output (21 pin)

ORDER No. SM-01004

Colour Television

TX-32PG30

EURO-7 Chassis

AV3 IN S-Video IN Y: 1V p-p 75Ω

(4-pin) C: 0.3V p-p 75Ω Audio (RCAx2) 500mV rms 10kΩ Video (RCAx1) 1V p-p 75Ω

AV4 IN Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 10kΩ S-Video IN Y: 1V p-p 75Ω (21-pin) C: 0.3V p-p 75Ω RGB (21 pin)

AV4 OUT Video (21 pin) 1V p-p 75Ω

Audio (21 pin) 500mV rms 1kΩ

High Voltage: 32kV ± 1kV Picture Tube: W76EKW10X72 76cm Audio Output: Left/Right 2 x 20W

(Music Power) 8Ω Impedance Headphones: 8Ω Impedance

3.5mm

Accessories supplied : Remote Control

2 x R6 (UM3) Batteries VS-32PG50 Video Cabinet

Dimensions:

Height: 576mm Width: 777mm Depth: 532mm

Net weight: 56kg Specifications are subject to change without notice.

Weights and dimensions shown are approximate. NOTE: This Service Manual should be used in conjunction with

the EURO-7 Technical guide.

Panasonic CS ( U.K. ) Ltd.

WILLOUGHBY ROAD,

BRACKNELL,

BERKS.,

RG12 8FT.

CONTENTS

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

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

SERVICE POSITION.................................................................................................................................................................4

ADJUSTMENT PROCEDURE AND FACTORY SETTINGS.....................................................................................................5

WAVEFORM PATTERN TABLE...............................................................................................................................................6

ALIGNMENT SETTINGS...........................................................................................................................................................7

BLOCK DIAGRAMS..................................................................................................................................................................8

PARTS LOCATION.................................................................................................................................................................13

REPLACEMENT PARTS LIST................................................................................................................................................14

SCHEMATIC DIAGRAMS.......................................................................................................................................................28

CONDUCTOR VIEWS.............................................................................................................................................................36

SAFETY PRECAUTIONS

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 33kV 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 above measurements.

6. The potential at any point should not exceed

1.4V rms. 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

2kΩ 10 Watts

TO INSTRUMENT’S EXPOSED METALLIC PARTS

Fig. 1.

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 33kV 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. 32kV ± 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.

WATER PIPE

(

EARTH)

SERVICE HINTS

Focus

Screen

How to remove the rear cover

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

SCREWS

LOCATION OF CONTROLS

SCREWS

Fig.2.

L-Board

A-Board

H-Board

D-Board

DF-Board

Fig.3.

DG-Board

U-Board

G-Board

K-Board

HOW TO MOVE THE CHASSIS INTO SERVICE POSITION

(C)

(D)

(A)

(B)

1. Remove the 3 screws (B) and (C) shown in Fig.5. / Fig.6., and remove the 2 speakers from the cabinet.

2. Affix the support strap supplied in the service pack (TZS1EK002) using a back cover screw, into the top right-hand cabinet rib (A) shown in Fig.4.

3. Hold and lift the rear of the chassis and gently pull toward you, as shown in Fig.4.

4. Release the respective wiring clips and rotate the chassis vertically through 90°, anti-clockwise.

5. Locate the base of the chassis frame into location (D), shown in Fig.7. / Fig.9.

6. Clip the chassis frame onto the support strap, shown in Fig.7. / Fig.8.

7. After servicing replace the speakers, and ensure all wiring is returned to it’s original position before returning the receiver to the customer

Fig.5.

Fig.4.

Fig.7.

Fig.6.

Fig.8.

Fig.9.

ADJUSTMENT PROCEDURE

Item / Preparation Adjusment/Confirmation +B SET-UP

4. Receive a Window pattern.

5. Set the controls :Brightness Minimum Contrast Minimum Volume Minimum

CUT OFF

1. Receive a Window pattern.

2. Degauss the tube externally.

3. Set the TV into Service Mode 1.

4. Select Sub brightness mode.

Confirm the following voltages.

A - Board

A1 Pin2 7.5 ± 0.5V IC1252 Pin2 2.5 ± 0.25V A1 Pin12 -20 ± 0.5V IC1251 Pin3 3.3 +0.3 / -0.2V A1 Pin16 20 ± 0.5V IC3302 Pin3 12 ± 0.6V A2 Pin15 30 ± 0.5V IC2707 Pin3 8 ± 0.4V A2 Pin6 15 ± 0.5V L2707 (IC2708) 9 ± 0.4V A3 Pin4 15 ± 0.5V L2704 (IC2706) 5 ± 0.2V A3 Pin2 -15 ± 0.5V L2716 (IC2705) 3.3 ± 0.2V

D – Board

TPD8-GND 7.5 ±0.5V TPD9-TPD11 38.5 ± 2V TPD10-GND 15.5 ± 1V TPD13-GND 14.5 ± 1V TPD15-GND 144.8 ± 1V TPD32-GND 209 ± 10V C864-GND -15.5 ± 1V D2 Pin15-GND 31 ± 1V To adjust Cutoff connect an oscilloscope to the Blue cathode. Adjust "Cutoff" value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V, press "STR" to store the value. Remove the oscilloscope. Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the screen “VR” until the display is just visible, press "5" to return to service mode.

Using the "Yellow" and "Blue" buttons adjust until optimum picture white balance is achieved, press "STR " to store the value. Select Sub Brightness mode and adjust until optimum picture brightness is achieved.

L2717 (IC2709) 3.3 ± 0.2V

FACTORY SETTINGS

To return customer settings to factory settings and clear owner ID of all information input by the customer, enter Self-Check mode. Press the down (-/v) button on the customer controls at the front of the TV set, at the same time pressing the STATUS button on the remote control. To exit Self Check, switch off the TV set at the power button. NOTE: Self Check should only be used when refurbishing the TV set and not during normal repair work.

MEM : O.K. GC1 : O.K. GC2 : - VDU : O.K. CIP : O.K. RGB : O.K. AVSW : O.K. Tun1 : O.K. Tun2 : - DAC1 : O.K. MSP : O.K. DOLBY : - CODEC : - DAC2 : - DAC3 : - -

Sum : ****

OPTION 1 : 01 OPTION 2 : 00 OPTION 3 : 10 OPTION 4 : 10 OPTION 5 : 00 OPTION 6 : 50 OPTION 7 : 80 OPTION 8 : 41 OPTION 9 : 00 OPTION 10 : 80 OPTION 11 : 19 OPTION 12 : 08 OPTION 13 : FA Check : CD

Factory use only

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

WAVEFORM PATTERN TABLE

Note: All waveforms have been taken using a standard colour bar pattern.

Video Out IC3001 Pin 56

2.2V

Vert Out IC451 Pin 3

88V

HFLB A3 Pin 11

10mS

64µS

Luminance In IC1315 Pin 37

0.9V

VFLB IC451 Pin 6

R - Out IC1315 Pin 23

20mS

32µS

Vert Drive A44 Pin 24

0.9V

10mS

H - Drive A3 Pin 10

32µS

G - Out IC1315 Pin 21

B - Out IC1315 Pin 19

SVM Out A44 Pin 43

32µS

R - Y IC1315 Pin 38

0.8V

E/W Out IC501 Pin 1

32µS

B - Y IC1315 Pin 39

0.8V

32µS

ALIGNMENT SETTINGS

(The figures below are nominal and used for representative purposes only.)

1. Set the Bass to maximum position, set the Treble to minimum position, press the down button (- / v) on the customer controls at the front of the TV and at the same time press the INDEX button on the remote control, this will place the TV into the Service Mode.

2. Press the RED / GREEN buttons to step up / down through the functions.

3. Press the YELLOW / BLUE buttons to alter the function values.

4. Press the STR button after each adjustment has been made to store the required values.

5. To exit the Service Mode, press the "N" button.

Alignment Function Settings / Special features

Horizontal Position

Vertical Position

Horizontal Amplitude

Vertical Amplitude

Parabola

Trapezoid

Horizontal Parallel

Vertical Linearity

Top Corner

Bottom Corner

Vertical Symmetry Correction

H – Pos

V – Pos

111

H – Amp

V – Amp

134

Parabola

Trapezoid

124

H – Parallel

V – Linear

Top – Corner

Bottom – Corner

V – S – Correct

Optimum setting.

Center Correction

DAF - Phase

Highlight

Lowlight

Sub-Brightness

Video Gain 2

Splitter Gain (Tuner)

C – Correct

DAF – Phase

205

High 0144 0126 0128 Low 0331 0340 0384

Sub-Brightness

144

Video Gain 2

157

SPL. Gain

Optimum setting.

VIDEO BLOCK DIAGRAM

AUDIO BLOCK DIAGRAM

CONTROL BLOCK DIAGRAM

POWER SUPPLY BLOCK DIAGRAM

WIRING BLOCK DIAGRAM

PARTS LOCATION

NOTE:

The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List.

26 30

Components Identifie d by mark have special charac t eris t ics important for safety. * When replacing any of these components, us e only manufacturers specified parts. In case of ordering these spare parts, please always add the c omplete Model-Type number to your order.

DescriptionCct Ref Parts Number DescriptionCct Ref Parts Number

EXPLODED VIEW

SPEAKER (WOOFER) 1 EAB12149C2 SPEAKER (TWEETER) 2 EASG7DH08B2 TUNER 3 ENG27511G REMOTE CONTROL 4 EUR511212A PANASONIC BADGE 5 TBMA060 POWER BUTTON 6 TBXA24302 CRT FIXING SCREW 7 THT1062 AV COVER 8 TKP8E1325 DEGAUSS COIL 9 TLK8E05123 CONTROL BRACKET 10 TMWA003-2 CHASSIS FRAME 11 TMX8E050 H P.C.B. 12 TNPA1724AB DG P.C.B EXCHANGE UNIT 13 TNPA1725AB L P.C.B. 14 TNPA1726AF G P.C.B. 15 TNPA1728AB K P.C.B. 16 TNPA1729 DF P.C.B. 17 TNPA1806 U P.C.B. 18 TNPA2042AE A P.C.B. 19 TNPH0348AF D P.C.B. 20 TNPH0349AC MODEL LABEL 21 TQF8E3101 DOOR LID 22 TTPA0128 BACK COVER 23 TTUA0370 CABINET 24 TTYA0425-2 POWER CORD 25 TXASX01CJUG FOCUS LEAD ASSEMBLY 26 TXJF0C0EFG BATTERY COVER (REMOTE) 27 UR51EC904A C.R.T. 28 W76EKW10X72 ANODE CABLE 29 ZTBZAD550A F.B.T. 30 ZTFM77009A

MISCELLANEOUS COMPONENTS

RUBBER FOOT . TBL63413 SET FOOT (REAR) . TBLG3020 AV LABEL . TBM8E2085 LABEL . TBM8E2108 LEFT PRESET LABEL. TBMU101 RIGHT PRESET LABEL. TBMU102 DOOR CATCHER . TEKX008 CRT EARTH SPRING . TES2298 LEFT PANEL . TKPA36805 PANEL RIGHT . TKPA36905 HANDLE . TKRA13110 BACK COVER HANDLE. TKRA19801 GEOMAGNETIC COIL . TLK8E05124 PCB BRACKET . TMW8E042 LED HOLDER . TMWJ019-1 POWER BUTTON JOINT. TMX8E051 CARTON . TPC8E4855 CUSHION TOP . TPD8E743 CUSHION BOTTOM . TPD8E744 CUSHION SUB . TPD8E745

REPLACEMENT PARTS LIST

Important Safety Notice

SERVICE PACK . TZS1EK002 BATTERY PACK . UM-3DJ-2P VIDEO CABINET . VS-32PG50

INSTRUCTION BOOKS

ENGLISH . TQB8E3140

I.C.s

REGULATOR D354 TL431CLPM 5V REGULATOR IC052 AN7805FLB RGB OUTPUT IC351 TDA6111Q-N4 RGB OUTPUT IC352 TDA6111Q-N4 RGB OUTPUT IC353 TDA6111Q-N4 VERTICAL OUTPUT IC451 LA7845N MULTIVIBRATOR IC459 TC74HC221AF AUDIO AMPLIFIER IC501 NJM2903MTE1 POWER SUPPLY IC801 STRF6656LF53 POWER SUPPLY SWITCHINGIC841 MIP0254SPSCF ERROR AMPLIFIER IC851 SE140N MICRO PROCESSOR IC1101 SDA6000-A23 EEPROM * IC1102 E2F0/010/05 EAROM * IC1104 X24BR200-3CA 5V REGULATOR IC1105 S-80843ALY-Z SDRAM IC1106 TVSA0395 CONVERTER IC1107 TC7MBD3245FK 5V REGULATOR IC1108 AN78L05TA SYSTEM RESET IC1109 PST9119NR RESET IC1110 PST9128NR

3.5V REGULATOR IC1251 SI-3033C

2.5V REGULATOR IC1252 PQ30RV21B D/A CONVERTER IC1253 M62392FP70BC RESET IC1254 PST9128NR R.G.B. PROCESSOR IC1315 AN5394FB M.S.P. IC2001 MSP3410DQAC5 AUDIO AMPLIFIER IC2301 TDA7490 H.P. AMPLIFIER IC2302 AN7108 QUAD AMPLIFIER IC2303 NJM2059MTE1 QUAD AMPLIFIER IC2306 NJM2059MTE1 QUAD AMPLIFIER IC2307 NJM2059MTE1 REGULATOR IC2705 PQ1CG21H2RZ REGULATOR IC2706 PQ1CG21H2RZ 8V REGULATOR IC2707 AN7808LB POWER SUPPLY IC2708 SI-8090K REGULATOR IC2709 PQ1CG21H2RZ SWITCHING IC3001 CXA2069Q-TL 12V REGULATOR IC3002 TDA8601T/C1 12V REGULATOR IC3302 L78M12MRB OPERATIONAL AMPLIFIER IC4801 AN6564NS-E1 GEOMAGNETIC CORRECTIONIC4802 PUB4301 LED RECEIVER RM1001 RPM6937-S

FUSES

FUSE HOLDER F801-1 EYF52BC FUSE HOLDER F801-2 EYF52BC FUSE F801 XBA2C50TH15

DIODES

DescriptionCct Ref Parts Number DescriptionCct Ref Parts Number

DIODE D003 MA3150HTX DIODE D004 MA3150HTX DIODE D010 MA152KTX DIODE D351 ERA15-04V3 DIODE D352 ERA15-04V3 DIODE D353 MA3110LTX DIODE D355 ERA15-04V3 DIODE D356 ERA15-04V3 DIODE D358 MA151ATX DIODE D360 ERA15-02V3 DIODE D361 MA151ATX DIODE D362 MA151ATX DIODE D363 MA151ATX DIODE D364 MA3130MTX DIODE D365 MA3130MTX DIODE D366 MA3130MTX DIODE D367 MA3051HTX DIODE D368 MA3051HTX DIODE D369 MA3051HTX DIODE D383 ERA15-04V3 DIODE D385 ERA22-04V3 DIODE D386 ERA15-04V3 DIODE D389 ERA15-04V3 DIODE D452 MA152KTX DIODE D453 EU02AV1 DIODE D454 MA152KTX DIODE D455 MA152KTX DIODE D456 ERA22-02V3 DIODE D465 MA3039HTX DIODE D502 MA4150TA DIODE D503 ERA81004V3 DIODE D504 D1NL40V70 DIODE D521 AU02AV0 DIODE D522 AU02AV0 DIODE D523 MA165TA5 DIODE D524 MA165TA5 DIODE D525 RP1HLFA5 DIODE D526 RP1HLFA5 DIODE D553 MA167TA5 DIODE D554 EU02 DIODE D555 RH3GLF102 DIODE D557 MA1033MTA DIODE D558 AU02V0 DIODE D559 FMV-3GULF730 DIODE D560 MA165TA5 DIODE D562 MA182TA DIODE D570 RU3ANV1 DIODE D580 MA4360 DIODE D591 MA165TA5 DIODE D592 MA4104 DIODE D593 ERA15-02V3 DIODE D594 MA165TA5 DIODE D595 MA4360MTA DIODE D701 D1NL40V70 DIODE D802 D6SB80LF-B DIODE D805 MA2240-BLFS DIODE D809 MA2082-ALFS DIODE D811 MA2082-ALFS DIODE D819 ERA22-04V3 DIODE D820 ERA22-04V3 DIODE D821 ERA22-04V3 DIODE D823 PC123FY2 THERMISTOR D825 232266296706 THERMISTOR D826 232266296706 DIODE D843 ERC0510V1

TRA NSIST OR S

DIODE D844 TVSSR2KL DIODE D845 RY24V1 DIODE D847 ERA22-10 DIODE D848 PC123FY2 DIODE D851 FMGG26S DIODE D852 MA4030LTA DIODE D853 RU2AMLFA1 DIODE D854 RU2AMLFA1 DIODE D855 FMGG2CS DIODE D856 EU02 DIODE D857 FMGG26S DIODE D858 MA165TA5 DIODE D859 MA165TA5 DIODE D861 MA165TA5 DIODE D862 MA4360MTA DIODE D865 MA165TA5 DIODE D867 MA165TA5 DIODE D869 MA165TA5 DIODE D881 MA165TA5 DIODE D885 MA4056HTA DIODE D886 MA165TA5 DIODE D887 MA165TA5 DIODE D888 EU02 DIODE D953 R2KNLFA1 DIODE D961 MA152KTX L.E.D. D1011 LNH201RFCC4 DIODE D1152 MA152KTX DIODE D1153 MA152KTX DIODE D1302 MA152KTX DIODE D1306 MA3062MTX DIODE D1307 MA3091MTX DIODE D1308 MA152KTX DIODE D1309 MA152KTX DIODE D1310 MA3062MTX DIODE D1311 MA3062MTX DIODE D1312 MA3062MTX DIODE D1313 MA3043MTX DIODE D1315 MA3043MTX DIODE D2040 MA152KTX DIODE D2041 MA152KTX DIODE D2048 MA152KTX DIODE D2301 TVSRM26V1 DIODE D2302 MTZJT-775.6B DIODE D2305 MA3047MTX DIODE D2306 MA29TA5 DIODE D2311 MA1180HTA DIODE D2312 MA3130MTX DIODE D2313 MA152KTX DIODE D2314 MA152KTX DIODE D2316 MA152KTX DIODE D2711 RK34LFC4 DIODE D2712 AK04V0 DIODE D2713 RK34LFC4 DIODE D2714 RK34LFC4 DIODE D3003 MA3091LTX DIODE D3004 MA3091LTX DIODE D3103 MA165TA5 DIODE D3104 MA165TA5 DIODE D3401 MA165TA5 DIODE D3402 MA165TA5

TRANSISTOR Q002 BC857B TRANSISTOR Q369 BC857B TRANSISTOR Q451 BC847B TRANSISTOR Q460 BC847B TRANSISTOR Q461 BC847B

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