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Toshiba 34HFX84, Service Manual

The Toshiba 34HFX84 is a high-quality television that offers superior picture quality and stunning audio. Unlock the full potential of this product by accessing the comprehensive Service Manual, available for free download on our website. Enhance your viewing experience and troubleshoot any issues effortlessly with this detailed manual.

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TCI-A7S D

23547569

1

2

3

4

5

6

DB30

CB01

DB31

DB05

KB01

DB03A

DB03

DB01

DB01A

RB13

DB37

DB36

PB01B

LED BOARD PD1709-2 (UA02)

BOTTOM (FOIL) SIDE

CRT-D/SVM BOARD PD1816A (U004)

BOTTOM (FOIL) SIDE

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- 38 -

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2

3

C920

R946

C921

R925

R924

R9240

23547645

TCI-A7S D

D950

D905

C903

C9

02

C918

G951

C964

D952

P905

R918

D953

Q901A

C963

R915

Q902

R942

G947

R914

R921

L901

Q931

C933

R907

R901

Q901

D951

G948

Q904

R9180

R952

R916

L902

D949

R917

R980

G908

D907

Z901

Q930

R922

Q931A

L905

D902

C905

C914

R912

D904

E

B

C

B

E

C

B

E

KR

G2

C

C

B

E

C

B

E

C912

+

R9930

P902B

2

1

4

6

5

3

B

E

Q907

Q908

R905

R933

R936

R904

R982

R934

R932

Q961

C919

Z903

C913

R978

R979

C911

Q937

D929

R960

G941

R958

D961

R935

R977

R903

D928

D901

R966

G903

C910

E

B

E

+

E

B

H

H

KB

C

B

8

7

L908

L910

C726

9

8

7

6

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4

3

2

1

P903B

R719

Q720

R709

Q709

Q719

V901A

D721

L911

D919

D911

Q903

R722

R702

R992

R730

D916

R725

Q706

R993

R981

R919

R943

L906

R717

C970

Q933

C722

P900

Q707

C705

G915

C930

G914

R953

C943

Q710

C704

P703B

C909

D715

R720

G923

Q934

R913

G966

R721

D908

G902

R964

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Q903A

R715

R902

Z902

R724

D917

R713

C707

D918

R961

R716

R718

R950

G901

Q705

L916

Q934A

L903

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B

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1

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C

A

C

A

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KG

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C

C712

D927

R940

B

C716

R9300

R731

R928

Q711

G925

R744

L924

D922

Q712

R965

C721

Q711A

G924

D926

L702

R741

L706

R929

D704

R739

L907

R740

Q936

R742

R745

C931

R737

P701B

R995

C907

R736

R962

C717

C715

R734

Q905A

L705

D921

R735

D705

R926

C713

R937

C965

Q906

C714

L904

G9880

R738

C953

Q712A

R920

R733

R930

R954

L704

R732

R944

Q905

Q937A

B

E

B

E

B

E

C

E

C

C

B

E

1

2

3

4

+

C

C

P705

R945

C720

D906

R743

C719

C718

D909

C922

1

2

3

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Summary of Contents for 34HFX84

Page 1: ...SERVICE MANUAL Color Television 34HFX84 DOCUMENT CREATED IN JAPAN July 2004 FILE NO 020 200414 ...

Page 2: ...NTS 8 CIRCUIT CHECKS 10 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 11 LOCATION OF CONTROLS 12 ADDING CHANNELS TO THE TV S MEMORY 14 TROUBLE SHOOTING 15 CHASSIS AND CABINET REPLACEMENT PARTS LIST 16 PC BOARDS TOP AND BOTTOM VIEW 25 TERMINAL VIEW OF TRANSISTORS 39 CIRCUIT BLOCK DIAGRAM 42 SPECIFICATIONS END APPENDIX CIRCUIT DIAGRAM ...

Page 3: ...ding this limit consti tutes a potential shock hazard and must be corrected im mediately WARNING Service should not be attempted by anyone unfa miliar with the necessary precautions on this receiver The fol lowing are the necessary precautions to be observed before servicing this chassis 1 An isolation Transformer should be connected in the power line between the receiver and the AC line before an...

Page 4: ... the green raster shift the deflection yoke from a foremost position hitting against the picture tube to a backward position horizontally stop the deflection yoke at a position where it begins to become a green raster and perform accurate marking on the picture tube 7 Shift the deflection yoke further backward and perform accurate marking at a position where the green raster begins to being luck 8...

Page 5: ...e green red Parts code 23 948 464 Transparent Bonded surface Adjust VR 1 and minimize the deviation of YH Only 27 30 and 32 Red green blue Red green blue Red green blue Red green blue Adjust VR 2 YHC and minimize the deviation of YH Red green blue Red green blue Red green blue Red green blue Adjust VR 3 YV and minimize the deviation of YV Red blue green Red blue green Red blue green Red blue green...

Page 6: ...ollowing key entry during display of adjustment menu provides special functions Screen adjustment mode ON OFF TV ANT VIDEO button on TV Selection of the adjustment items Channel on TV or Remote Change of the data value Volume on TV or Remote Adjustment menu mode ON OFF MENU button on TV Initialization of the memory QA02 RECALL Channel button on TV Initialization of the self diagnostic data RECALL ...

Page 7: ...r OPT Part number of HDMI microprocessor HDMI error code 4 SELECTING THE ADJUSTING ITEMS 1 Every pressing of CHANNEL button in the service mode changes the adjustment items in the order of table 2 button for reverse order Refer to table 2 for preset data of adjustment mode See SETTING ADJUSTING DATA on page 11 5 ADJUSTING THE DATA 1 Pressing of VOLUME or button will change the value of data in the...

Page 8: ...e item HIT HEIGHT 2 Adjust the CONTRAST control to the mini mum 3 Call up the adjustment mode display then select the item BRTC 4 Press the VOLUME or button so the belt of vertical retrace line just disappear 5 Adjust the CONTRAST control for the de sired contrast 6 Perform the HEIGHT adjustment ITEM ADJUSTMENT PROCEDURE WIDTH WID 1 Call up the adjustment mode display then select the item WID 2 Pr...

Page 9: ... steps Note Check the vertical picture position is correct WHITE BALANCE RCUT GCUT BCUT GDRV BDRV 1 Adjust the CONTRAST control to the center and BRIGHTNESS control to the maximum 2 Call up the adjustment mode display and press the TV VIDEO button on Remote until the white and black pattern appears on the screen 3 Adjust the following items with the CHANNEL s t and VOLUME s t buttons 4 Press the T...

Page 10: ...the final check in servicing Checking should be done following the steps below 1 Turn the receiver on and press the RESET button 2 Temporarily short TP R and TP X with a jumper wire Raster and sound will disappear 3 The receiver must remain in this state even after removing the jumper wire This is the evidence that the FS circuit is functioning properly 4 To obtain a picture again temporarily turn...

Page 11: ...IN THE SERVICE MODE CHAPTER 2 SPECIFIC INFORMATIONS SAFETY INSTRUCTIONS Item Name of adjustment Item Name of adjustment Preset Table 2 CIRCUIT CHECKS FBT DETECTION VOLTAGE C 20 1 V 40H 40H 40H 40H 40H 46H 2FH Preset 12H 3DH 15H 17H 3CH 4CH 10H 10H LIN WID PARA CNR TRAP HPOS TCNR BTNR V LINEARITY PICTURE WIDTH E W PARABOLA EW M CORRECTION EW TRAPEZIUM H POSITION EW TOP CORNER EW BOTTOM COR BRTC BRI...

Page 12: ...R VIDEO 3 IN Front Power indicator MENU Remote sensor Video 3 Video audio inputs behind the door TV VIDEO Volume POWER Channel MENU LOCATION OF CONTROLS TV Front TV Rear Back Variable Audio OUT VIDEO 1 2 ColorStream HD1 HD2 Audio OUT ANT 1 IN ANT OUT ANT 2 IN HDMI IN ...

Page 13: ...ws access to the favorite channel search function MENU allows access to on screen programming menus ENTER sets programming menu information yz x select or adjust programming menus FAV yzcycles through favorite channels CH yz cycles through programmed channels VOL yz adjusts the volume level EXIT exits the programming menus INPUT selects the video input source MUTE mutes the sound RECALL displays o...

Page 14: ...emory While the TV is cycling through the channels the mes sage Programming Now Please Wait appears When channel programming is complete the message Completed appears Press Channel or to view the programmed channels When you press Channel or your TV will stop only on the channels stored in the TV s channel memory Follow the steps below and on the this page to program all active channels into the T...

Page 15: ...f Q670 Check the existence of the input waveform of QS102 and Q601 Check the Q670 OK Check the voltage of QS102 and Q601 Pin8 22V NG OK NG OK NG OK NG Check the voltage of H002 Pin27 9V Pin11 5V NG Check the power supply voltage of QS01 Pin32 9V OK To power supply block To power supply block Check the existence of the input waveform of QS01 Pin33 Pin34 H002 exchange NG OK Check the existence of th...

Page 16: ...K73B 50V 0 1UF K C320 24667101 ELECTROLYTIC CE04Q 25V 100UF M 3A C322 24539105 PLASTIC FILM 50V 1UF J C323 24539684 PLASTIC FILM 50V 0 68UF J C325 24591203 PLASTIC FILM 50V 0 02UF J C326 24669010 ELECTROLYTIC 50V 1UF M 3A C327 24073041 ELECTROLYTIC 16V 470UF M 3A C329 24503334 PLASTIC FILM CF92 T 250V 1R5UF J C330 24539105 PLASTIC FILM 50V 1UF J C332 24109473 CERAMIC CHIP 25V B 0 047UF K C333 2410...

Page 17: ... 2UF M 3A C884 24073215 ELECTROLYTEC CE04Q 160V 220UF M C886 24214471 CERAMIC DISC 500V B 470PF K C889 24797222 ELECTROLYTIC 50V 2200UF M C890 24503041 PLASTIC FILM 63V 0 1UF J C891 24073161 ELECTROLYTIC CE04P 16V 3900UF M 3A C892 24073172 ELECTROLYTIC CE04P 25V 1000UF M 3A C893 24092339 CERAMIC DISC 2KV 330PF K C896 24214471 CERAMIC DISC 500V B 470PF K C898 24434100 CERAMIC DISC 500V SL 10PF D C8...

Page 18: ... METAL FILM 1 20W 75 OHM J R204 24011750 CHIP METAL FILM 1 20W 75 OHM J R205 24011750 CHIP METAL FILM 1 20W 75 OHM J R206 24011750 CHIP METAL FILM 1 20W 75 OHM J R217 24366103 CARBON FILM 1 6W 10K OHM J R218 24366333 CARBON FILM 1 6W 33K OHM J R219 24366563 CARBON FILM 1 6W 56K OHM J R227 24366273 CARBON FILM 1 6W 27K OHM J R228 24366562 CARBON FILM 1 6W 5 6K OHM J R303 24552151 OXIDE METAL FILM 1...

Page 19: ... J R719 24366101 CARBON FILM 1 6W 100 OHM J R720 24366102 CARBON FILM 1 6W 1K OHM J R721 24366101 CARBON FILM 1 6W 100 OHM J R722 24552471 OXIDE METAL FILM 1 2W 470 OHM J R723 24366101 CARBON FILM 1 6W 100 OHM J R724 24366151 CARBON FILM 1 6W 150 OHM J R725 24366182 CARBON FILM 1 6W 1 8K OHM J R730 24552100 OXIDE METAL FILM 1 2W 10 OHM J R731 24552331 OXIDE METAL FILM 1 2W 330 OHM J R732 24366330 ...

Page 20: ...2 CARBON FILM 1 6W 8 2K OHM J RA76 24366822 CARBON FILM 1 6W 8 2K OHM J RA77 24366153 CARBON FILM 1 6W 15K OHM J RB11 24366271 CARBON FILM 1 6W 270 OHM J RB12 24366103 CARBON FILM 1 6W 10K OHM J RB13 24366470 CARBON FILM 1 6W 47 OHM J RB20 24011103 CHIP METAL FILM 1 20W 10K OHM J RB21 24366104 CARBON FILM 1 6W 100K OHM J RB31 24011103 CHIP METAL FILM 1 20W 10K OHM J RC01 24000445 CHIP JUMPER 1608T...

Page 21: ...ETAL FILM 1 20W 2 2K OHM J RV511 24011101 CHIP METAL FILM 1 20W 100 OHM J RV513 24011222 CHIP METAL FILM 1 20W 2 2K OHM J RV521 24011101 CHIP METAL FILM 1 20W 100 OHM J RV523 24011222 CHIP METAL FILM 1 20W 2 2K OHM J RV541 24011101 CHIP METAL FILM 1 20W 100 OHM J RV543 24011222 CHIP METAL FILM 1 20W 2 2K OHM J RV551 24011101 CHIP METAL FILM 1 20W 100 OHM J RV553 24011222 CHIP METAL FILM 1 20W 2 2K...

Page 22: ...RANSISTOR 2SA1837 Q712 23314912 TRANSISTOR 2SC4793 Q719 23114433 TRANSISTOR 2SC1815 Y Q720 23114433 TRANSISTOR 2SC1815 Y Q801 23135047 IC HYBRID IC STR F6629B Q805 23114498 TRANSISTOR RN1405 Q831 23009546 IC REGULATOR 5V 3 NJM2396F05D Q832 23009549 IC REGULATOR 9V 3 NJM2396F09D Q833 23009967 IC 5 0V 2 REG TO220FP 3 BA50BC0T Q834 23009546 IC REGULATOR 5V 3 NJM2396F05D Q838 23009976 IC REGULATOR 3 3...

Page 23: ...885 23316714 DIODE RL2Z D891 23316768 DIODE FMB 26L D892 23357042 DIODE FMX 12S 023 108 D899 24019485 VARISTOR TNR10V431K D901 23118859 DIODE 1SS133 D904 23118859 DIODE 1SS133 D905 23118859 DIODE 1SS133 D906 23118859 DIODE 1SS133 D907 23118859 DIODE 1SS133 D908 23118859 DIODE 1SS133 D909 23118859 DIODE 1SS133 D911 23357366 DIODE FR105 B5 D916 23357012 DIODE 1SS244 D917 23357012 DIODE 1SS244 D918 2...

Page 24: ...H F1 TV4 PJ01A 23368579 CONNECTOR PLUG 5P 2 5MM G JST EH B5B EH F1 TV4 PJ01B 23368579 CONNECTOR PLUG 5P 2 5MM G JST EH B5B EH F1 TV4 PJ901 23368577 CONNECTOR PLUG 3P 2 5MM G JST EH B3B EH F1 TV4 PV01 23023094 JACK PIN 1S6P SMK LAP5120 0205FC PV02 23365819 JACK 1S3P UA01 23023096 JACK PIN 10P SMK LAP5120 0401FC U005 PV05 23023241 JACK PIN 9P SMK LAP5120 0431F PV12 23368578 CONNECTOR PLUG 4P 2 5MM G...

Page 25: ... 25 26 SCAN CONVERTER MODUL UV02 BOTTOM FOIL SIDE ...

Page 26: ...SCAN CONVERTER MODUL UV02 TOP COMPONENT SIDE 27 28 ...

Page 27: ... Q484 R319 R320 C886 R4620 R4670 R4630 L889 R465 Q486 D891 RB32 D484 Q4466 D481 C326 Q4464 R474 D892 R368 R367 C462 P701A P450B C466 D469 BB02A Q460 Q374 R4562 R398 Q393 R4563 R3380 D373 R394 R4691 Q391 R332 C4690 C335 R331 R334 Q301 C470 Q4690 R4310 R387 R376 C332 C336 R373 Q373 R4692 R3903 R338 Q392 R386 R4701 C393 C315 R337 R4702 C469 C3940 R324 C362 C477 R3990 R4461 R4772 C314 R392 R3904 R4560...

Page 28: ...B E E 23547569 210 209 211 TCI A7S D PP01 RV101 RV100 LV100 RV102 CV101 RV103 PV02 CV100 PJ01B CV102 PP02 SA04 SA03 RA73 SA01 SA02 RJ04 RA71 CJ02 SA07 QJ02A QJ02 RJ02 RA76 RA72 CJ03 SA06 RA77 RJ05 SA05 PB01A QB11 BB07A RB11 RB12 BB08A PP03 RJ09 RJ06 QJ03 CJ06 RJ10 CJ05 RJ03 CJ04 PJ901 RJ08 RJ07 CJ01 RJ01 31 32 ...

Page 29: ...1 D671 C694 GRS02 CS06 C676 C696 R666 Q831 C8349 C8350 C8348 Q838 Q832A Q832 Q613 D880 Q834 R832 C834 L8312 CC02 R616 R615 D612 D614 RC03 C8351 C8341 C613 C8355 C8344 C8353 C8342 Q834A L8311 R612 C8347 Q831A CS20 PV16 RS22 CS25 RS20 QS10 CS22 RV484 CV481 RV483 RS57 RV482 LY105 CV482 RY160 C101 CV483 GJ108 PF03 CY105 PV12A P803B GJ107 QV48 QS04 RS21 RS74 RV481 PV12 RS73 CY160 QS08 RS75 RS34 CS31 QS...

Page 30: ...4 C676 RS50 C696 RS49 JP031 JP009 Q670AZ JP006 JP004 JP008 JP029 L104 QV58 RV79 RV46 QV55 RV17 TP 12 LV03 QV60 DV25 DV27 CV01 LY102 RV561 RV502 RV601 RV562 RV02 QV01 RV522 RV45 RV31 CV29 RV541 LY103 RV602 HY01 DV69 DV31 CV21 LV51 RV503 DV35 DV02 RV15 CV37 RV563 LY101 RV591 RV603 RV543 LV52 RV081 LV05 RV511 RV021 DV08 RV523 QV56 RV37 CV17 DV71 RV25 RV70 CV27 RV33 CV15 DV29 QV51 RV27 L101 RV553 QV52...

Page 31: ...66 G903 C910 E B E E B H H KB C B 8 7 L908 L910 C726 9 8 7 6 5 4 3 2 1 P903B R719 Q720 R709 Q709 Q719 V 9 0 1 A D721 L911 D919 D911 Q903 R722 R702 R992 R730 D916 R725 Q706 R993 R981 R919 R943 L906 R717 C970 Q933 C722 P900 Q707 C705 G915 C930 G914 R953 C943 Q710 C704 P703B C909 D715 R720 G923 Q934 R913 G966 R721 D908 G902 R964 R723 Q903A R715 R902 Z902 R724 D917 R713 C707 D918 R961 R716 R718 R950 G...

Page 32: ...788 2SA1306 2SA1186A 2SC752GTM 2SC2482 2SC2655 2SC4721P 2SC752 2SA562TM 2SA1015 2SC1815 2SC2878 2SC1740S 2SC2120 2SA9335 2SA1788 RN2203 RN2201 RN2004 RN1203 RN1204 RN2204 RN1205 RN1202 RN1201 2SD1554 2SD2253 2SD1556 2SC5143 2SC5570 2SD2553 E C B B C E BCE B CE B C E E C B E C B ON4409 B C E ...

Page 33: ...000 000 All resistors are 1 6W and 5 tolerance carbon resistor unless otherwise noted as the following marks 1 2R Metal or Metal oxide of 1 2 watt 1 2S Carbon compsistion of 1 2 watt 1RF Fuse resistor of 1 watt 10W Cement of 10 watt K 10 G 2 F 1 2 CAPACITOR Unless otherwise noted in schematic all capacitor values less than 1 are expressed in µF and the values more than 1 in pF All capacitors are c...

Page 34: ... SHEET 6 8 7 8 SHEET 7 8 8 8 SHEET 8 8 G Hyper 1 3 SHEET 1 3 2 3 SHEET 2 3 3 3 SHEET 3 3 AD CONVERTER A SHEET 1 3 B SHEET 2 3 C SHEET 3 3 TC90A92A 1 TC90A92A 2 GC REG TC90A92A 3 GNESIS 1 3 SHEET 1 3 2 3 SHEET 2 3 3 3 SHEET 3 3 SDRAM Gm6010 GNESIS OUT GNESIS REG CPU PIP Color Dec 1 3 SHEET 1 3 2 3 SHEET 2 3 3 3 SHEET 3 3 Connector 1 3 SHEET 1 3 2 3 SHEET 2 3 3 3 SHEET 3 3 AV_Terminal BANKAN SHEET 1...

Page 35: ... TA1360AFG Pb Pr Y Ys Ym R G B BUS1 BUS2 V_OUT_BLK V_STOP_BLK AFC ABL H_PHA_COM ABL_SW H_OUT VP NEW QS01 MM1631AJBE HYPER SIGNAL board HDMI module Y Pb Pr Y Pb Pr HDMI Analog_Audio NEW QY501 TA1383 QY100 TC90A45 F V Y C Cb Cr V V Y V Y C Cb Cr V Y C Cb Cr Y Cb Cr HD VD Y Cb Cr HD VD Y Cb Cr HD V Y C Cb Cr IN1 TV1 IN2 TV2 IN3 E1 IN4 E2 IN5 E3 IN6 CS1 IN7 CS2 HDMI O1 OUT2 MON L R L R OUT1 SPK L R L ...

Page 36: ... Micon Circuit SR81 Degauss Relay Deviation Circuit Audio Circuit Signal Processing Circuit Signal Processing Circuit Signal Processing Circuit Signal Processing Circuit Q832 9VRegulator Q831 5V 2Regulator Q838 3 3V2Regulator Q833 5V 3Regulator Q834 5V 4Regulator 5V 1 CIRCUIT BLOCK DIAGRAM POWER SUPPLY ...

Page 37: ...UDIO OUTPUT VIDEO 1 V p p 75 ohms negative sync AUDIO 150 mV rms 30 modulation equivalent 2 2 k ohms or less VARIABLE AUDIO OUTPUT 0 300 mV rms 30 modulation equivalent 2 2 k ohms or less Video Audio Terminals cont HDMI INPUT HDMI 1 HDMI 2 compliant type A connector HDCP compliant E EDID compliant Suggested scan rates 1080i 480p 480i 720p HDMI Audio 2 channel PCM 32 44 1 48 kHz sampling frequency ...

Page 38: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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