Hitachi C1421R, Service Manual

Page 1: ...ins Voltage 220V 240V 50Hz Fuse f 4AH 4 0A Type Focusing Electra static lmpédance d entrée d antenne 75 ohm non équilibré Sélecteurs de programmes Touches de sélection de canaux UP DOWN HAUT BAS avec 70 programmes Télécommande Entrée directe canal CH Consommation propre 1421 J9W 2021 49W 2121 49W Tubes images 1421 type 37 cm 2021 type 51 cm 2121 type 55 cm Tension secteur 220V 240V 50 Hz Fusible T...

Page 2: ...e TV channels Programmation des canaux TV Einstellen der TV Kanale Connecting externa equipment Connexion de périphériques Anschluss externer gerate Circuit description Description des circuits Schaltkreisbeschreibung Alignment instructions lnstructions d alignement Ausrichtungsinformationen Block diagram Printed circuit board Schematic diagram Wave forms Electrical parts list Difference of parts ...

Page 3: ...adiation leveis moderately in excess of design leveis The high voltage must not under any circum 2 UK stances exceed 29kV on the chassis X RADIATION TUBES The primary source of X radiation in this receiv er is the picture tube The tube utilised for the above mentioned function in this chassis is specially construct ed to limit X radiation For continued X radiation protection replace tube with the ...

Page 4: ...TV OPERATION SUPPLEMENT The following pages are extracted from the Customer Operating Guide to assist Service Engineers in TV set up 3 UK ...

Page 5: ...hing channel 13 SKIP EDIT Menu 15 DEL EDIT Menu 16 MOVE EDIT Menu NB Teletext mode operations are only applicable to TVs with teletext Models C1421T C2121T r 1 6 f 8 7 r 1H 13 f 14 t 1 f 18 ___ Hf 17 14 TEXT ON OFF return to TV mode 1 ó TV ON OFF Stand by mode 2 0 9 Teletext page selector 3 Mute 4 0 8 Not used 5 MENU For volume brightness control 6 Teletext page up 7 T Teletext page down 8 Teletex...

Page 6: ...DIT menu shows you the programme position assignment When using this AUTO SEARCH method the broadcasts may not be found and stored in the order you desired For example BBC1 may not be allocated to programme number 01 and BBC2 may not be allocated to programme number 02 etc The EDIT menu enables you to change the programme position assignment according to your per sonal preference SKIPP NG THE CHAN...

Page 7: ...it is possible to adjust the fine tuning Move the cursor to EEJ and press UP or DOWN button to activate fine tuning UP or DOWN lt only operates whilst the UP or DOWN button is being pressed ENTERING A STATION NAME To select a station from the station name list Move the cursor to on the PRESET menu then select a station name from the list using the UP DOWN but tons and press the OK button lf you wa...

Page 8: ... mode lf not press the AV button 0 8 on the remote control or on the front of the set The AV symbol 8 will be displayed on the screen with the current TV programme number ln AV mode you can change the TV programme number with the UP DOWN button or the NUMBERED buttons 0 9 lf externa equipment has an S VHS signal output you can also receive the S VHS signal with an appropriate cable e g with an S V...

Page 9: ... the intercarrier sound IF input pin 1 An alignment free PLL tunes itself to the sound carrier and demodulates it The non volume controlled front end audio signal can be obtained from the deemphasis pin 55 amplitude 300 mVeff Source select switch TDA8374 input switch can select one of the following sources pin 13 front end CVBS I int pin 17 CVBS 2 ext pin 11 pin 1O Y s vhs C s vhs Selected signal ...

Page 10: ...ters are adjusted via the 12C bus The deflection processar of the TDA8374 offers the following five contrais Horizontal shift Vertical slope Vertical amplitude Vertical 8 correction vertical shift Colour decoder The colour decoder contains an alignment free X tal oscillator a dual killer circuit and co our difference demodu ators Together with the TDA8395 SECAM add on a multi standard PAUSECAM NTS...

Page 11: ... a very small gun current This black currenf of the three guns is measured internally and compared with a reference current to adjust the black levei of RGBout The black levelloop is active during 4 ines at the end of the vertical blanking ln the first line the leakage current is measured max acceptable 100 A ln the next three ines the black leveis of the three guns are adjusted The nominal value ...

Page 12: ...ut pin 9 and 1O are switched on These outputs will be disconnected and high ohmic when no SECAM is detected for two trame periods the decoder will be initialized before trying again SECAM L and L application For SECAM L and L the TDA8374 has to be switched to positive modulation via 12C bus bit MOD SECAM L signals only occur in VHF band I and have their picture and sound carrier interchanged compa...

Page 13: ...il and feedback resistor The voltage across feedback resistor is fed via pin 9 to correction amplifier D to obtain a deflection current which is proportional to the drive voltage The supply voltage for the TDA8356 is 16V at pin 3 The flyback generator has a separate supply voltage of 45V on pin 6 The guard pulse is useful to synchronize OSD Horizontal deflection The circuit contains horizontal dri...

Page 14: ...obtained by smoothing voltage appearing at winding of pin6 7 of T801 2 Oscillator F B terminal voltage Pin 7 An oscillator generates pulse signals which turns the power transistor on and off by making use of charge and discharge of C1 and C2 incorporated in the Hybrid IC Constant voltage control of the switched mode power supply is performed by changing both ON time and OFF time except when the lo...

Page 15: ...ply circuit sustains the off state as longas current of 500 JlA minimum flows to VIN terminal from a start up resistor ln order to prevent a malfunction to be caused by a noise and so on delay time is provided by C1 incorporated in the IC and therefore the latch circuit operates when the OVP or TSD circuit is in operation or an externa signal input is provided for about 1OJ1Sec or longer ln additi...

Page 16: ...N terminal is usually supplied from the drive winding of the transformer and the voltage is proportional to the output voltage it also functions against the over voltage of the secondary output which occurs when the control circuit becomes detective or in some other cir cumstances 15 UK Q M h ...

Page 17: ...until the TV screen display L AFT OK 2 AGC 1 Set a Pattern Generator with RF LEVEL 63 2 dBuV 2 Connect a OSCILLOSCOPE PROBE to P101 TUNER AGC INPUT 3 Adjust AGC UP DOWN KEY the voltage drop 1V de over below its maximum voltage Alternative Method 1 Set a Pattern Generator with RF LEVEL 80 5 dBuV PAL CROSSHATCH without SOUND CARRIER 2 Connect a OSCILLOSCOPE Bandwidth 2 1OOMHz PROBE to P101 TUNER IF ...

Page 18: ...hanical center marks of the CRT using the V SIZE UP DOWN KEY 6 2 VERTICAL SIZE The VERTICAL CENTER adjustment has to be done in advance 1 Apply a RETMA PATTERN signal 2 Set the TV to NOR I mode 3 Adjust the upper part of the picture with the V SIZE UP DOWN keys 6 3 VERTICAL SLOPE The VERTICAL SIZE adjustment has to be done in advance 1 Apply a RETMA PATTERN signal 2 Adjust the lower part of the pi...

Page 19: ...FF ATS ON The initial state of adjustment are as follows P SECAM L PAL 1 FRANCE U K AV2 AV2 3BANO 1 BANO ON OFF ON ON V Center V Siope V Size H Center R G B AFT Center 30 64 33 64 S Correction 00 64 AGC 10 64 Service Remocon R 30SVC AUTO r A FT AFT L TEST AV TTX tOO OOO 80888 Y GENTER Y SIZE V SlOPE S COR SUB BRf 00000 18 UK IMúMIM i PAL B G CONTINENTAL AV2 3BANO OFF ON ...

Page 20: ...74A Ríi L A2E REGULATOR f PIF SIF VIDE O RGB GC rD O Mt r j1f r v h T DA8138 I JlLI CHROMA DEF o1s Rsr wAV SW RGB SW ttt 1601 r r VERT VER HOR n OECOROER I BEAU MATRIX 1301 TOA 7056 AGC our our our se our R v a v cuR R Y B Y TDA8356 AUDIO VIDEO 100 TDA61060 X 3 1 1901 1902 1903 VIDEO AMP I I RCA JACK I Q rh VJ r l ll7J _ lll JT2V l 55v I PAL NTsc lviOEO 4 v SOUND AMP Auo L_ __ 2 1 t J t h IJ v IJ ...

Page 21: ... i 1702 R819 CB2i L401 E o o O R911 C904 r H w Ic 9 g gJ I T f EIN _ 1903 11901 19021 1 1 Q Q R9õs 0 gQ9oly se R901 s I R se c GND P904 __ _ 10 R901 ó G ND 0906 j Hl GND CIXIXIXXO C912 G ND R G B FB12VHT 200V P501A R913 o SCT2 P905 o o o o seu ...

Page 22: ... R534 75 P501 TO CRT PCB REMOTE CONTROL R 28803 o OI GMS30112 R098 Kl 1 1 1 5 00 ru 04 os 5 6 17 18 53 2 I 4 7 8 9 33 34 39 40 5I 55 56 57 61 16 7 8 r CRT BOARD P904 P905 TO CRT GND o 1901 TDA61060 v v V GNO O DDH v v OC FB 51 1 1902 TDA61060 v v V tt G t ID O ODH v v 0C FB 1 2 3 56 7 8 g 1 9 PR0 PR9 13 PO iER 14 lUTE 16 RECAll Rf VEAL 17 L HOLD 18 R SUBPAGE 33 PR UP 34 PR DOWN 39 SLEEP SIZE 40 ME...

Page 23: ... CERA 25V 0 01 UI 25V 0 01u 24 Z101 CERA FILTER MKT40MA100P 25 Z102 CERA FILTER MKT40MA1OOP 26 IL01 IC AM OEMOD STV8225 27 I SLOt SAW FILTER L9461M 28 QL01 TR KTC 3198Y 29 QL02 TR 1 l C 3198Y 30 OL03 TR KTC 3198Y 31 0702 TR 1 l C 3198Y 32 OL01 DJODE MA859 33 DL02 DIODE MA859 34 RL01 R C Fil M 22K 35 RL02 R C FILM 100 36 RL03 R C Fil M 2 2K 37 RL04 R C FILM 10K 38 RL05 R C FILJyl 10K 39 RL06 R C FI...

Page 24: ...O047MF J TP C118 DECZCH1H100J C CERA 50V CH 1OPF J AXIAL C120 DECEXD1H109F CELECTRO SOV RND 1MF 5X11 TP C301 DECMXB2A104J CMYLAR 100V EU 0 1MF J TP C302 DECCZB1H181K C CERA 50V B 180PF K AXIAL C303 DECCZB1H181K C CERA 50V B 180PF K AXIAL C304 DECMXM2A104J C MYLAR 100V 0 1MF J TP C306 DECBXF1 H1 04Z C CERASEMI 50V F O1MF Z TAPPING C308 DECEXF1 E471 V C ELECTRO 25V RSS 470MF 10X16 TP C309 DECEXF2A47...

Page 25: ...AL C523 DECCZF1 E223Z C CERA 25V F 0 022MF Z AXIAL C524 DECBZF1 H1 04Z C CERASEMI 50V F O1MF Z AXIAL C525 DECEXF1 C470V C ELECTRO 16V RSS 47MF 5X11 TP C526 DECMXM2A104J C MYLAR 100V 0 1MF J TP C527 DECMXB1 H224J C MYLAR 50V EU 0 22MF J TP C528 DECCZF1 E103Z C CERA 25V F O01 MF Z AXIAL C529 DECEXF1 C470V C ELECTRO 16V RSS 47MF 5X11 TP C530 DECEXF1 H1 09V C ELECTRO 50V RSS 1MF 5X11 TP C531 DECCZF1 H...

Page 26: ...0V RSS 47MF 6 3X11 TP C713 DECCXF1 H1 03Z C CERA 50V F O01MF Z TAPPING C714 DECMXB1 H333J C MYLAR 50V EU O033MF J TP C715 DECMXB1 H224J CMYLAR 50V EU O22MF J TP C716 DECMXB1H333J C MYLAR 50V EU 0 033MF J TP C717 DECCZF1 E1 03Z C CERA 25V F O01 MF Z AXIAL C718 DECEXF1 C470V C ELECTRO 16V RSS 47MF 5X11 TP C719 DECMXB1H334J C MYLAR 50V EU 0 33MF J TP C720 DECCZF1 E1 03Z C CERA 25V F 0 01 MF Z AXIAL C...

Page 27: ...1 V C ELECTRO 25V RSS 1OOMF 6 3X11 TP 0101 OE01N4148 OIOOE 1N4148 TAPPING 0401 OEOBYV95C OIOOE BYV95C TAPPING Lt 0402 OEOBYV95C OIOOE BYV95C TAPPING Lt 0403 OEOBYV95C OIOOE BYV95C TAPPING Lt 0404 OE01N4148 OIOOE 1N4148 TAPPING 0405 OE01N4148 OIOOE 1N4148 TAPPING 0406 OE01N4148 OIOOE 1N4148 TAPPING 0409 OEOBY228 OIOOE BY228 TAPPING Lt 0420 OEOBYV95G OIOOE BYV95C TAPPING Lt 0421 OEOUZ5R1 BM OIOOEZEN...

Page 28: ...617 HEAT81NK ALEX 13018 DE7174300811 SCREW TAPPTITE TT2 RNO 3X8 MFZN 1501 OE1 TDA8374A ICVCO TOA8374A 1502 OE1TDA4665V4 IC DELAY TOA4665N4 1601 OE1 TDA7056 IC TOA7056 1701 OE1 OW5255M4 ICMICOM OW5255M4 1702 OE1UPC574J IC UPC574J 1703 OE124LC08B ICMEMORY 24LC08B 1704 OE1 TFMW5380 IC PREAMP TFMW5380 1801 OE18TRS5707 ICPOWER STR 85707 1802 OE1TDA8138 IC REGULATOR TDA8138 1802A OE4857025401 HEAT81NK A...

Page 29: ...85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING J050 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J051 DE85801 065GY WIRECOPPER AWG22 1 0 65 TIN COATING J052 DE85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING J053 DE85801065GY WIRECOPPER AWG221 0 65 TIN COATING J054 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J057 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J058 DE85801065GY WIRECOP...

Page 30: ...065GY WIRECOPPER AWG22 1 0 65 TIN COATING J116 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J117 DE85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING J118 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J119 DE85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING J123 DE85801 065GY WIRECOPPER AWG22 1 0 65 TIN COATING J124 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING J125 DE85801 065GY WIRE COPPE...

Page 31: ...601 DE485923162S CONNWAFER YW025 03 STICK P801 DE4859242220 CONN WAFER YFW800 02 P802 DE4859242220 CONNWAFER YFW800 02 P904 DE4859262120 CONNWAFER YFW800 01 PWC1 DE4859903110 CORO POWER AS CW4232 BL102NG TUBE 2500 0301 DETKTC3198Y TR KTC3198Y 0401 DET2SD2499 TR 2802499 0402 DET2SD1207T TR 2801207 T TAPPING 0501 DETKTC3198Y TR KTC3198Y 0502 DETKTC3198Y TR KTC3198Y 0503 DETKTC3198Y TR KTC3198Y 0504 ...

Page 32: ...IN COATING R412 DE85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING R413 DERD 42124J R CARBON FILM 1 4 120K OHM J R414 DERD 4Z273J R CARBON FILM 1 427KOHM J R415 DERF01 2129JA R FUSIBLE 1W 1 2 OHM J A CURVE R416 DERD A2303J R CARBON FILM 1 6 30K OHM J R417 DERD 421 02J RCARBON FILM 1 41KOHMJ R418 DERD AZ124J R CARBON FILM 1 6 120K OHM J R420 DE85801065GY WIRECOPPER AWG22 1 0 65 TIN COATING R501 DER...

Page 33: ...6K OHM J R605 DERD AZ270J R CARBON FILM 1 6 27 OHM J R606 DERD AZ391J R CARBON FILM 1 6 390 OHM J R607 DERD AZ113J R CARBON FILM 1 611K OHM J R608 DERD AZ1 02J R CARBON FILM 1 61KOHMJ R609 DERD AZ1 03J R CARBON FILM 1 6 10K OHM J R610 DERD AZ102J R CARBON FILM 1 61KOHMJ R611 DE85801 065GY WIRE COPPER AWG22 1 0 65 TIN COATING R612 DERD AZ153J R CARBON FILM 1 615K OHM J R613 DERD AZ153J R CARBON FIL...

Page 34: ... 4 7K OHM J R736 DERD AZ472J R CARBON FILM 1 647KOHMJ R737 DERD AZ472J R CARBON FILM 1 6 4 7K OHM J R738 DERD AZ122J R CARBON FILM 1 6 1 2K OHM J R739 DERD AZ122J R CARBON FILM 1 6 1 2K OHM J R740 DERD AZ122J R CARBON FILM 1 6 1 2K OHM J R741 DERD AZ102J R CARBON FILM 1 61KOHMJ R743 DERD AZ101J R CARBON FILM 1 6 100 OHM J R744 DERD AZ101J R CARBON FILM 1 6 100 OHM J R745 DERD AZ1 03J R CARBON FILM...

Page 35: ...DERD AZ202J R CARBON FILM 1 6 2K OHM J R907 DERD 421 04J R CARBON FILM 1 4100K OHM J R908 DERD 421 04J R CARBON FILM 1 4 100K OHM J R909 DERD 421 04J R CARBON FILM 1 4 100K OHM J R911 DERC 22152J R CARBON COMP 1 2 1 5K OHM J R912 DERC 22152J R CARBON COMP 1 2 1 5K OHM J R913 DERC 22152J R CARBON COMP 1 2 1 5K OHM J R914 DERD AZ1 03J R CARBON FILM 1 610K OHM J R920 DE85801 065GY WIRECOPPER AWG22 1 ...

Page 36: ...4W 82K 1 4W68K 1 4W68K RD 4Z124J RD 4Z154J RD 4Z154J RD 4Z683J RD 4Z823J RD 4Z683J RD 4Z683J 11 R415 RFU81BLE 1W12A F 1W0 18 F 1W0 47 F 1W2 4A F 1W 0 47 F 1W12A F 1W3A F RF01Z129JA RF01Z188J RF01Z478J RF01Z249JA RF01Z478J RF01Z129JA RF01Z309JA 12 R302 RC FILM 1 6W1 8K 1 6W22K 1 6W18K 1 6W2 2K 1 6W22K 1 6W2 2K 1 6W2 7K RD AZ182J RD AZ222J RD AZ182J RD AZ222J RD AZ222J RD AZ272J RD AZ272J 13 R901 3 ...

Page 37: ...FILM 1 6W 4 7K 1 6W 4 7K DERD AZ472J DERD AZ472J 11 C105 107 C ELECTRO 50V 4 7 50V 4 7 DECEXF1 H479V DECEXF1 H479V 12 C106 108 C CERA 50V o01 50V O01 DECCZF1 E1 03Z DECCZF1 E1 03Z 13 U101 TUNER 3303KHC DT2 IV17D 3303KHC DE4859714430 DE4859716130 DE4859714430 14 Z101 102 CERA FILTER MKT40MA100P DE5PMKT40MA 15 IL01 ICAM DEMOD STV8225 DE1 STV8225 16 SL01 SAW FILTER L9461M DE5PL9461 M 17 OL01 TR KTC31...

Page 38: ...L06 C ELECTRO 50V 4 71 J DECEXF1 H479V 44 C707 C ELECTRO 50V 101 J DECEXF1 H1 OOV 45 C728 C CERA 25V O0221 1F DECCZF1 E223Z 46 JP08 09 WIRECOPPER WIRECOPPER WIRECOPPER DE85801 065GY DE85801 065GY 47 1501 TDA8374A TDA8374A TDA8374A TDA8374A DE1TDA8374A DE1TDA8374A DE1TDA8374A 48 C104 C ELECTRO 50V 4 71 J 50V 4 71 1 50V 331 1 DECEXF1H479V DECEXF1 H479V DECEXF1 H330V Difference of parts for Option Te...

Page 39: ... MECHANICAL EXPLODED VIEWS ANO PART LIST 1421 i 8 r J 3 4 38 ...

Page 40: ...0 DE4856013300 SCREW CRT F XING AS 9 DE485601 3301 SCREW CRT FIXING AS 8 DE4852148500 WASHER RUBBER 7 MAIN PCB 6 DE4854933001 BUTTON 5 DE4855530400 DECO SENSOR 4 DE4852060700 MASK FRONT 3 DE4855613600 MARK BRAND 2 DE4856717900 SPRING 1 DE4854848201 POWER BUTTON 18M M JDO P E FILM TO 03X600X550 SW 2 1 EPS 150 ART P E FILM T2S TRS 4X14 MFZN BK HIPS BK FELT T0 7 L 100 FELT T0 7 L 200 2 L 70mm 2 L 140...

Page 41: ... DE4857415001 CLIP FUSE 2 PFCS000 0702 11 4 DE485 7025401 HEAT SINK 1 A1050P H24 T2 11 3 DE4857024617 HEAT SINK 1 AL EX 11 2 DE4853530901 HOLDER LED 1 HIPS BK 11 1 11 PCB MAIN CP 375 10 DE4856013300 SCREW CRT FIXING AS 2 L 70mm 9 DE4856013302 SCREW CRT FIXING AS 2 L 190mm 8 DE4856214900 WASHER RUBBER 4 CR T2 0 3 4 5 7 2 DE4855533701 DECO SENSOR 1 PMMA CL 7 1 DE4854936201 BUTTON 1 ABS BK 7 DE485192...

Page 42: ...1 849 2000 H TACHI FRANCE RADIO T V ELECTRO MENAGER S A 4 allée des Sorbiers Pare d active de Chêne 69671 BRON Cedex France Te 7214 29 70 HITACH SALES HELLAS S A 91 Fa irou Street 117 41 Athens Greece Te 92 42 620 4 HITACHI SALES IBERICA S A Gran Via Carlos Tercero 101 1 1 Barcelona 08028 Te 3 330 86 52 HITACHI HOME ELECTRONICS NORDIC Domnarvsgatan 29 Lunda Box 62 S 163 91 Spanga Sweden Te 08 621 ...