colour television tx-14b4t tx-14b4t/b tx-14b4tl …diagramas.diagramasde.com/televisores/tx14t4b...

Colour TelevisionTX-14B4TTX-14B4T/BTX-14B4TLTC-14B4RTC-14B4R/B

Z-185 ChassisSPECIFICATIONSPower Source: 220-240V a.c., 50Hz

Power Consumption: 39W

Stand-by PowerConsumption: 2.9W

Aerial Impedance: 75Ω unbalanced, Coaxial Type

Receiving System: PAL I, PAL-525/60M.NTSCNTSC (AV only)

Receiving Channels: UHF E21-E68 CH01-CH99 (L (IRISH) MODELS)

Intermediate Frequency:Video/AudioVideo 39.5MHzAudio 33.5MHz

32.95MHz (NICAM)

Colour 35.07MHz (PAL)

Terminals:AV1 IN Video (21 pin) 1V p-p 75Ω Audio (21 pin) 500mV rms 10kΩ RGB (21 pin) Audio (RCA x 1) 500mV rms 10kΩ Video (RCA x 1) 1V p-p 75Ω

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

Picture Tube: A34EAC01X06 34cm

High Voltage: 26.5 ± 1kV

Audio Output: 2.5W(Music Power) 8Ω Impedance

Headphones: 8Ω Impedance3.5mm

Accessoriessupplied : Remote Control

2 x R6 (UM3) Batteries

Dimensions:Height: 342mmWidth: 366mmDepth: 376mm

Net weight: 9.6kg

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

ORDER No. SM-02008

CONTENTSSAFETY PRECAUTIONS..........................................................................................................................................................2

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

ALIGNMENT PROCEDURE AND OPTION SETTINGS............................................................................................................4

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

BLOCK DIAGRAMS ..................................................................................................................................................................6

PARTS LOCATION ...................................................................................................................................................................7

REPLACEMENT PARTS LIST ..................................................................................................................................................8

SCHEMATIC DIAGRAMS .......................................................................................................................................................14

CONDUCTOR VIEWS.............................................................................................................................................................16

SAFETY PRECAUTIONSGENERAL GUIDE LINES

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

2. When servicing, observe the original lead dress in thehigh voltage circuits. If a short circuit is found, replaceall parts that have been overheated or damaged bythe short circuit.

3. After servicing, see that all the protective devicessuch as insulation barriers, insulation papers, shieldsand isolation R-C combinations are correctlyinstalled.

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

5. Potentials as high as 27.5kV are present when thisreceiver is in operation. Operation of the receiverwithout the rear cover involves the danger of a shockhazard from the receiver power supply. Servicingshould not be attempted by anyone who is notfamiliar with the precautions necessary when workingon high voltage equipment. Always discharge theanode of the tube.

6. After servicing make the following leakage currentchecks to prevent the customer from being exposedto shock hazard.

LEAKAGE CURRENT COLD CHECK1. 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 exposedmetallic cabinet part on the receiver, such as screwheads, aerials, connectors, control shafts etc. Whenthe exposed metallic part has a return path to thechassis, the reading should be between 4M ohm and20M ohm. When the exposed metal does not have areturn path to the chassis, the reading must beinfinite.

LEAKAGE CURRENT HOT CHECK1. 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 tomeasure the potential across the resistor.

4. Check each exposed metallic part and check thevoltage at each point.

5. Reverse the a.c. plug at the outlet and repeat each ofthe above measurements.

6. The potential at any point should not exceed1.4V rms. In case a measurement is outside the limitsspecified, there is a possibility of a shock hazard, andthe receiver should be repaired and rechecked beforeit is returned to the customer.

X-RADIATION WARNING1. 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 27.5kV withoutcausing X-Radiation.

NOTE: It is important to use an accurate periodicallycalibrated high voltage meter.

1. Set the brightness to minimum.2. Measure the high voltage. The meter should indicate

26.5kV ± 1kV.If the meter indication is out of tolerance, immediateservice and correction is required to prevent thepossibility of premature component failure.

3. To prevent any X-Radiation possibility, it is essentialto use the specified tube.

HOT CHECK CIRCUIT

a.c. VOLTMETER

WATER PIPE(EARTH)

TO INSTRUMENT’S EXPOSEDMETALLIC PARTS

Fig. 1.

2kΩ 10 Watts

2

SERVICE HINTSHow to remove the rear cover1. Remove the 10 screws as shown in Fig.2.

LOCATION OF CONTROLS

3

Fig.2.

SCREWSSCREWS

Fig.3.

Screen

Y-Board

FocusE-Board

ALIGNMENT PROCEDURE AND OPTION SETTING

Entering SERVICE modeService mode is entered by selecting the “mute” remote key and local “down” simultaneously with the sharpness DAC set toMinimum and programme position 99 selected.Service mode 2 is selected by pressing the Recall remote key while in service mode 1.Service mode navigation- Up /Down remote keys :cycle through the service items available.- -/+ remote keys :Decrement/Increment the values within range.- TV/AV :Store the current data.- 0 – 7 digit keys :Toggle bits 0-7 in option byte (service mode 2).

Order Item Range

1 Cut off (VG2) LED ON , LED OFF

2 Vertical slope 0-63

3 Vertical Shift 0-63

4 Vertical amplitude 0-63

5 Horizontal shift 0-63

6 Red Cut 0-63

7 Green Cut 0-63

8 Red Drive 0-63

9 Green Drive 0-63

10 Blue Drive 0-63

11 AGC 0-63

12 Sub-Colour 0-63

13 Sub-Brightness 0-63

Sub-Colour: Set sub-colour to 16.

Sub-Brightness: Set sub-colour to 33.

G2 alignment: Before entering into service mode, recall the nominal picture setting :remote key “N”.From this setting, increase brightness by 11 steps and reduce sharpness to minimum.Tune a colour bar signal on Prg 99 and enter into SVC mode. In SVC mode , select “G2” item and press – or + remote key to control software disable vertical deflection. The user must then adjust G2 voltage on FBT, to find the point where LED is ON. Press – or + remote key to return to normal SVC mode.

White balance: - Select a dark picture and adjust Red Cut and Green Cut to the desired colour temperature.- Select a bright picture, set Blue Drive to 32 and adjust Red Drive, and Green Drive to the desired colour temperature.

4

8

CIRCUIT BLOCK DIAGRAM

PARTS LOCATION

7

16

6

5

10

13

12

9

14

11

7

2

1

15

NOTE:The numbers on the exploded view belowrefer to the mechanical section of theReplacement Parts List.

4

3

Components Identified by mark have special characteristics important for safety.* When replacing any of these components, use only manufacturers specified parts.In case of ordering these spare parts, please always add the complete Model-Type number to your order.

REPLACEMENT PARTS LIST

Important Safety Notice

DescriptionCct Ref Parts Number DescriptionCct Ref Parts Number

COMMON PARTS

EXPLODED VIEW

PANASONIC BADGE 1 4855623201

SPEAKER 2 4858314010

E P.C.B. 3 4859804593

AC POWER CORD 4 4859906310

F.B.T. 5 50H0000211

C.R.T 6 A34EAC01X06

DEGAUSS COIL 7 DC-1450

TUNER 8 UV1316/A

MISCELLANEOUS COMPONENTS

CUSHION . 4858191200

BATTERY PACK . UM-3DJ-2P

CRT SOCKET SCT1 PCS633A

I.C.s

VERTICAL AMPLIFIER I301 TDA8357J

MONO AMPLIFIER I601 TDA7267A

I.R. RECEIVER I703 KRT30

POWER SUPPLY SWITCHINGI801 STRF6653

OPTO COUPLER I804 KP1010C

ERROR AMPLIFIER I806 SE110N

5V REGULATOR I820 KA7805

8V REGULATOR I822 KA7808

3.3V REGULATOR I823 LP295033

RGB OUTPUT I901 TDA6107Q

FUSES

FUSE 4A250V F801 5FSCB4022R

FUSE G900 4SG0D00103

DIODES

DIODE D313 DBYW36

DIODE D341 DUZ33B

DIODE D350 DTZX12C

DIODE D360 DTZX22C

DIODE D361 DUZ33B

DIODE D403 BY228

DIODE D405 DBYW36

DIODE D407 DBYW36

DIODE D408 DBYW36

DIODE D450 DBYW36

DIODE D510 DTZX3V9B

DIODE D511 DTZX3V9B

DIODE D520 1N4148

DIODE D521 1N4148

LED D707 DSML1216W

DIODE D710 DTZX5V1B

DIODE D801 DBYT51J

DIODE D802 DBYT51J

DIODE D803 DBYT51J

DIODE D804 DBYT51J

DIODE D805 DBYW36

DIODE D806 DBYW36

DIODE D808 DBYW36

DIODE D809 DBYW36

DIODE D810 DBYW36

DIODE D811 DTZX5V6B

DIODE D820 DBYW76

DIODE D821 DBYW36

DIODE D822 DTZX9V1B

DIODE D824 1N4148

DIODE D825 1N4148

DIODE D830 DBYW36

DIODE D831 DBYW36

DIODE D840 1N4148

DIODE D841 1N4148

DIODE D860 DBYW36

DIODE D904 DBAV21

DIODE D905 DBAV21

DIODE D906 DBAV21

DIODE DA02 DTZX12C

DIODE DA05 DTZX5V6B

DIODE DA06 DTZX5V6B

DIODE DA08 DTZX5V6B

DIODE DA09 DTZX5V6B

DIODE DA10 DTZX5V6B

DIODE DA11 DTZX5V6B

DIODE DA27 DTZX5V6B

THYRISTOR I810 TX0202DA

DIODE R801 DT122B8010

TRANSISTORS

TRANSISTR Q101 2SC5343Y

TRANSISTOR Q401 2SD2499

TRANSISTR Q402 2SD1207

TRANSISTR Q501 2SA1980Y











TRANS SMS T801 50M3535A1

TRANSFORMERS

TRANSFORMER T401 50D10A2

8


COILS

PEAKING COIL L101 5CPZ100K02

COIL L301 5CPZ109M04

COIL L350 5CPZ109M04

COIL L401 58H0000016

COIL L500 5CPZ120K02






COIL L600 5MC0000100

COIL L801 5MC0000100

COIL L802 58C9430599

COIL L803 5MC0000100

FILTERS

LINE FILTER LF801 5PLF24A1

FILTER SF1 5PJ1981M

FILTER Z501 5PYXT6R0MB

FILTER Z603 5PXF1B471M




CRYSTALS

CRYSTAL X502 5XE12R000E

RESISTORS

CARBONR101 ERD25TJ473 0.25W 5% 47K

CARBONR102 ERD25TJ472 0.25W 5% 4K7



CARBONR106 ERD25TJ101 0.25W 5% 100

CARBONR107 ERD25TJ101 0.25W 5% 100

CARBONR120 ERD25TJ101 0.25W 5% 100

CARBONR302 ERD50T159J 0.5W 5% 1R5

METALR305 RS02Y331JS 2W 5% 330




CARBONR341 ERDS1TJ152 0.5W 5% 1K5

METALR350 RN-4Z1501F 0.25W 1% 1.5K

METALR351 RN-4Z1501F 0.25W 1% 1.5K



CARBON R360 ERD25TJ564 0.25W 5% 560K

CARBONR390 ERD25TJ159 0,25W 5% 1R5



METALR415 RS02Y102JS 2W 5% 1K



CARBONR501 ERD25TJ101 0.25W 5% 100

CARBONR502 ERD25TJ101 0.25W 5% 100

CARBONR505 ERD25TJ101 0.25W 5% 100


CARBONR507 ERD25TJ101 0.25W 5% 100


CARBONR509 ERD25TJ681 0.25W 5% 680


CARBONR512 ERD25TJ101 0.25W 5% 100

CARBONR513 ERD25TJ101 0.25W 5% 100

CARBONR514 ERD25TJ101 0.25W 5% 100


CARBON R516 ERD25TJ393 0.25W 5% 39K




CARBONR521 ERD25TJ391 0.25W 5% 390

CARBONR522 ERD25TJ221 0.25W 5% 220

CARBONR523 ERD25TJ331 0.25W 5% 330

CARBONR524 ERD25TJ561 0.25W 5% 560



CARBON R527 ERD25TJ431 0.25W 5% 430

CARBONR528 ERD25TJ221 0.25W 5% 220

CARBONR530 ERD25TJ470 0.25W 5% 47




CARBONR535 ERD25TJ101 0.25W 5% 100

CARBONR537 ERD25TJ101 0.25W 5% 100

CARBONR538 ERD25TJ101 0.25W 5% 100

CARBONR539 ERD25TJ101 0.25W 5% 100


CARBON R556 ERD25TJ822 0.25W 5% 8K2

CARBONR567 ERD25TJ101 0.25W 5% 100


CARBONR571 ERD25TJ432 0,25W 5% 4K3




CARBONR580 ERD25TJ561 0.25W 5% 560

CARBONR585 ERD25TJ224J 0,25W 5% 220K

CARBONR586 ERD25TJ221 0.25W 5% 220

CARBONR587 ERD25TJ101 0.25W 5% 100

CARBONR588 ERD25TJ101 0.25W 5% 100

CARBONR589 ERD25TJ101 0.25W 5% 100





CARBONR596 ERD25TJ302 0,25W 5% 3K



CARBONR599 ERD25TJ221 0.25W 5% 220

CARBONR601 ERD25TJ432 0,25W 5% 4K3



CARBON R710 ERD25TJ431 0.25W 5% 430

CARBONR713 ERD25TJ201J 0,25W 5% 200


CARBONR721 ERD25TJ181J 0,25W 5% 180

CARBONR722 ERD25TJ221 0.25W 5% 220

CARBONR723 ERD25TJ331 0.25W 5% 330

CARBONR724 ERD25TJ471 0.25W 5% 470



FUSIBLER804 RF02Y338K 2W 10% R33

CARBONR805 ERD50T100J 0.5W 5% 10


CARBONR807 ERD50T272J 0.5W 5% 2K7

METALR808 RS02Y821JS 2W 5% 820


CARBONR811 RC-2Z565KP 0.5W 10% 5.6M


RESISTORR819 RX07C339JF 7W 5% 3R3





CARBONR840 ERD25TJ220 0.25W 5% 22

CARBONR850 ERD50T479J 0.5W 5% 4R7

9


CARBONR855 ERD25TJ185 0,25W 5% 1.8M



CARBONR910 ERD25TJ101 0.25W 5% 100

CARBONR911 ERD25TJ101 0.25W 5% 100

CARBONR912 ERD25TJ101 0.25W 5% 100

RESISTORR913 RC-2Z102K 0.5W 10% 1K



FUSIBLER920 RF01Y188K 1W 10% R18




CARBONRA01 ERD25TJ680 0,25W 5% 68

CARBONRA02 ERD25TJ101 0.25W 5% 100



CARBON RA05 ERD25TJ334 0.25W 5% 330K

CARBON RA06 ERD25TJ750 0.25W 5% 75




CARBONRA11 ERD25TJ183 0.25W 5% 18K


CARBONRA16 ERD25TJ680 0,25W 5% 68





CAPACITORS

ELECTC102 ECEA1ES470 25V 47pF

CERAMICC103 ECCR1H102J 50V 1nF




ELECTC121 ECEA1H100 50V 10pF


MYLARC313 CMXM2A104J 100V 100nF

CERAMICC320 CBXF1H104Z 50V 100nF





MYLARC404 CMYH3C752J 1K6V 7.5nF

MYLARC408 CMYE2D474J 200V 470nF

ELECTC412 ECEA2CS339 160V 3.3µF


ELECTC415 ECEA2CS100 160V 10pF

MYLARC417 CMXL2E104K 250V 100nF


CERAMICC420 ECCR2H222J 500V 2.2nF

ELECTC500 ECEA1H478 50V 470µF

MYLARC504 CMXM2A332J 100V 3.3nF






CERAMICC515 CBZR1C222M 16V 2200pF

CERAMICC516 CBZR1C472M 16V 4700pF

ELECTC517 ECEA1H109 50V 1µF

CERAMICC518 CBZF1H104Z 50V 100nF

ELECTC519 ECEA1H229 50V 2.2µF

















ELECTC555 ECEA1CS470 16V 47µF





CERAMICC571 ECCR1H821J 50V 820pF



CERAMIC C587 ECCR1H101J 50V 100pF



CAPACITOC590 CXCH2A300D 100V 30pF

CAPACITOC591 CXCH2A300D 100V 30pF











FILMC801 CL1JB3474K 250V 470nF

CERAMICC803 ECCR3A472J 1KV 4.7nF

CERAMICC804 ECCR3A472J 1KV 4.7nF

ELECTC805 CEYN2G101P 400V 100µF






CERAMICC812 CH1AFE472M 4kV 4700pF





ELECTC823 ECEA1ES102 25V 1nF






ELECTC840 ECEA1CS332 16V 3.3nF

ELECTC841 ECEA1CS222 16V 2.2nF









10


MYLARC968 CMXL2E104K 250V 100nF

CERAMIC CA01 ECCR1H101J 50V 100pF



ELECTCA04 ECCR1H229J 50V 2.2µF

CERAMICCA05 ECCR1H102J 50V 1nF

CERAMICDA04 CBZR1C222M 16V 2200pF

SWITCHES

SWITCH SW700 5S50101090

SWITCH SW701 5S50101090

SWITCH SW702 5S50101090

SWITCH SW703 5S50101090

SWITCH SW704 5S50101090

SWITCH SW801 5S40101146

DIFFERENCES FOR MODEL TC--14B4R

EXPLODED VIEW

BACK COVER 9 4852151402

BATTERY COVER (REMOTE) 10 EUR51EC946-4

CABINET 11 4852071723

MODEL LABEL 12 PSMA1V5012

POWER BUTTON 13 4854943506

REMOTE CONTROL 14 EUR511380

Y P.C.B. 15 485Y-14B4R


LOOP ANTENNA . 4850A01220

CONTROL BUTTON . 4851934304

AV COVER . 4857538302

CARTON . GPBMA1V5012

INSTRUCTION BOOKS

ENGLISH TQB8E3508-1

I.C.s

EAROM* I702 X24C-14B4R

DIODES

ZENER DIODE D591 DUZ2R4B

RESISTORS

CARBONR591 ERD25TJ101 0.25W 5% 100

CAPACITORS


ELECTC315 ECEA2A470 100V 47pF





DIFFERENCES FOR MODEL TC--14B4RB

EXPLODED VIEW

BACK COVER 9 4852151400

BATTERY COVER (REMOTE) 10 UR51EC946-4

CABINET 11 4852071721




Y P.C.B. 15 485Y-14B4R



CONTROL BUTTONS . 4851934302

AV COVER . 4857538301


INSTRUCTION BOOKS

ENGLISH TQB8E3508-1

I.C.s

DECODER/VIDEO PROCESSOI501 TDA9381S

EAROM* I702 X24C-14B4RB

DIODES

DIODE D591 DTZX2V4A

RESISTORS

CARBONR591 ERD25TJ221 0.25W 5% 220

CAPACITORS




ELECTC502 ECEA1ES479 25V 4.7µF


DIFFERENCES FOR MODEL TX--14B4T

EXPLODED VIEW

BACK COVER 9 4852151400

BATTERY COVER (REMOTE) 10 UR51EC904A

CABINET 11 4852071721




Y P.C.B. 15 485Y-14B4T




AV COVER . 4857538302


INSTRUCTION BOOKS

ENGLISH TQB8E3504-1

I.C.s

EAROM* I702 X24C-14B4TB

DIODES

DIODE D591 DTZX2V4A

RESISTORS

CARBONR591 ERD25TJ221 0.25W 5% 220

CAPACITORS







DIFFERENCES FOR MODEL TX--14B4TB

EXPLODED VIEW

BACK COVER 9 4852151400


CABINET 11 4852071721




Y P.C.B. 15 485Y-14B4R




AV COVER . 4857538301

11



INSTRUCTION BOOKS

ENGLISH TQB8E3504-1

I.C.s

EAROM* I702 X24C-14B4TB

DIODES

DIODE D591 DTZX2V4A

RESISTORS

CARBONR591 ERD25TJ221 0.25W 5% 220

CAPACITORS







DIFFERENCES FOR MODEL TX--14B4TL

EXPLODED VIEW

BACK COVER 9 4852151400


CABINET 11 4852071721

MODEL LABEL 12 PSMA1V5512B



Y P.C.B. 15 485Y-14B4T



AV COVER . 4857538301

CARTON . GPBMA1V501Z

ROD ANTENNA . TZS7ED008

INSTRUCTION BOOKS

ENGLISH TQB8E3505-1

I.C.s

EAROM* I702 X24C-14B4TL

DIODES

DIODE D591 DTZX2V4A

RESISTORS

CARBONR591 ERD25TJ221 0.25W 5% 220

CAPACITORS







12

SCHEMATIC DIAGRAMS FOR MODELS

TX-14B4T TX-14B4T/B TX-14B4TLTC-14B4R

TC-14B4R/B

(Z-185 CHASSIS)

NOTE1. RESISTOR

All resistors are carbon ¼W resistor, unless marked otherwise.Unit of resistance is OHM (Ω) (k=1,000, M=1,000,000)

2. CAPACITORSAll capacitors are ceramic 50V unless marked otherwise.Unit of capacitance is µF unless otherwise stated.

3. COILUnit of inductance is µH, unless otherwise stated.

4. TEST POINTTest Point Position

5. EARTH SYMBOL

Chassis Earth (Cold)

Line Earth (Hot)

6. VOLTAGE MEASUREMENTVoltage is measured by a d.c. voltmeter.Measurement conditions are as follows:Power source a.c. 220V-240V, 50HzReceiving Signal Colour Bar signal (RF)All customer controls Maximum position

7.

Indicates the Video signal path

Indicates the Audio signal path

These schematic diagrams are the latest at time of printing and are subject to change without notice.

REMARKSa. Do not touch the hot part, or the hot and cold parts at the same time, as you are liable to a shock hazard.

b. Do not short circuit the hot and cold circuits as electrical components may be damaged.

c. Do not connect an instrument, such as an oscilloscope, to the hot and cold circuits simultaneously as this may causefuse failure. Connect the earth of the instruments to the earth connection of the circuit being measured.

d. Make sure to disconnect the power plug before removing the chassis.

NOTE1. The Power Supply Circuit contains a circuit area, which uses a separate power supply to isolate the earth connection.

The circuit is defined by HOT and COLD indications in the schematic diagram. All circuits, except the Power Circuit, areCOLD.

IMPORTANT SAFETY NOTICEComponents identified by mark have special characteristicsimportant for safety. When replacing any of these components, useonly manufacturer's specified parts.

14

PRINTED CIRCUIT BOARD

colour television tx-14b4t tx-14b4t/b tx-14b4tl …diagramas.diagramasde.com/televisores/tx14t4b...

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