Sony KV-28WF1A, Service Manual

Page 1: ...ench SCC K01S A KV 28WF1K KV 28WF1R KV 28WF1U SERVICE MANUAL KV 28WF1A KV 28WF1B KV 28WF1D KV 28WF1E RM 839 Italian SCC K05Q A RM 839 AEP SCC K07T A RM 839 OIRT SCC K20H A RM 839 OIRT SCC K20G A BE 3D CHASSIS MICROFILM R TRINITRON COLORTV R RM 839 Spanish SCC K06S A RM 839 UK SCC K04N A ...

Page 2: ...C V T 9 6 E 1 2 E F H U 2 1 E 2 E F H V H G B L A P 1 4 S 1 S 1 V T E L B A C 0 1 U 1 U 0 1 M 1 M 5 0 S 1 0 S 2 V T E L B A C 2 H 1 H H A F H V A I L A T I 9 6 B 1 2 B F H U I L A P 9 6 B 1 2 B F H U 0 2 R 1 0 R F H V K D M A C E S L A P 3 4 4 8 5 3 C S T N y l n o t u p n i o e d i v P E A K D H G B 0 2 S 1 S F H U 2 1 E 2 E F H V H G B 1 4 S 1 S 1 V T E L B A C 0 1 U 1 U 0 1 M 1 M 5 0 S 1 0 S 2 ...

Page 3: ...at the distribution board FUSE How to replace the fuse Open the fuse compartment with the screwdriver blade and replace the fuse ASA T WARNING KV 28WF1U only e m a n l e d o M m e t I A 1 F W 8 2 V K B 1 F W 8 2 V K D 1 F W 8 2 V K E 1 F W 8 2 V K K 1 F W 8 2 V K R 1 F W 8 2 V K U 1 F W 8 2 V K P I P F F O F F O F F O F F O F F O F F O F F O P I P M F F O F F O F F O F F O F F O F F O F F O l i o ...

Page 4: ... s s e L e c n a t i c a p a c t u p n I 9 n e e r G d n u o r G 0 1 n e p O 1 1 n e e r G 2 1 n e p O 3 1 d e R d n u o r G 4 1 g n i k n a l B d n u o r G 5 1 t u p n i d e R 7 0 e v i t i s o p s m h o 5 7 B d 3 l a n g i s S t u p n i a m o r c 7 0 e v i t i s o p s m h o 5 7 B d 3 6 1 t u p n i g n i k n a l B l a n g i s s Y V 4 0 0 e t a t s w o L V 3 1 e t a t s h g i H s m h o 5 7 e c n a...

Page 5: ...E ATTENTION AFIN D EVITER TOUT RISQUE D ELECTROCUTION PROVENANT D UN CHÁSSIS SOUS TENSION UN TRANSFORMATEUR D ISOLEMENT DOIT ETRE UTILISÉ LORS DE TOUT DÉPANNAGE LE CHÁSSIS DE CE RÉCEPTEUR EST DIRECTEMENT RACCORDÉ À L ALIMENTATION SECTEUR ATTENTION AUX COMPOSANTS RELATIFS À LA SÉCURITÉ LES COMPOSANTS IDENTIFIÈS PAR UNE TRAME ET PAR UNE MARQUE SUR LES VUES EXPLOSÉES ET LES LISTES DE PIECES SONT D UN...

Page 6: ......

Page 7: ......

Page 8: ......

Page 9: ......

Page 10: ......

Page 11: ......

Page 12: ......

Page 13: ......

Page 14: ......

Page 15: ......

Page 16: ......

Page 17: ......

Page 18: ......

Page 19: ......

Page 20: ...KV 28WF1 20 DISASSEMBLY SECTION 2 2 1 REAR COVER REMOVAL Rear Cover 2 2 CHASSIS ASSY REMOVAL 2 3 1 SERVICE POSITION 1 2 3 2 SERVICE POSITION 2 1 Seven screws BVTP 4x16 2 ...

Page 21: ...KV 28WF1 21 2 4 WIRE DRESSING 2 5 A BOARD REMOVAL A board 2 6 A EXTENSION BOARD BE 3D EXTENSION BOARD A board ...

Page 22: ...en one side of the rubber cap is separated from the anode button the anode cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c HOW TO HANDLE AN ANODE CAP Don t damage the surface of anode cap with sharp shaped material Don t press the rubber hardly not to hurt inside of anode caps A metal fitting called as shatter hook terminal is built into the rubber...

Page 23: ...he plates differ in size it is important that the correct plates are refitted in their original location The plates are identified by markings A B C D E on their top side 1 Identify the plate by locating its marking 2 Turn the plate over noting where the marking is located 3 Locate the corresponding marking indicated on the main chassis bracket See Fig 2 4 Refit the plate as indicated in Fig 3 wit...

Page 24: ...gauss with the degausser 3 1 BEAM LANDING 1 Input the white signal with the pattern generator CONTRAST BRlGHTNESS 2 Set the pattern generator raster signal to red 3 Move the deflection yoke forward and adjust with the purity control so that the red is at the centre and the blue and the green take up equally sized areas on each side See Fig 3 1 3 3 4 Move the deflection yoke forward and adjust so t...

Page 25: ...rtical static convergence 1 Moving horizontally adjust the H STAT control so that the red green and blue points are on top of each other at the centre of the screen 2 Moving vertically adjust the V STAT magnet so that the red green and blue points are on top of each other at the centre of the screen 3 If the H STAT variable resistor cannot bring the red green and blue points together at the centre...

Page 26: ... convergence adjustment Preparation Before starting this adjustment adjust the horizontal static convergence and the vertical static convergence 1 Slightly loosen the deflection yoke screws R G B R G B R G B R G B R G B R G B 2 Remove the deflection yoke spacer 3 Move the deflection yoke as shown in the figure below and optimize the convergence 4 Tighten the deflection yoke screws 5 Re install the...

Page 27: ...a voltage of 3 0V 0 3V 1 Input an all white signal from the pattern generator 2 Enter into the service mode 3 Enter into Picture Adjustment service menu 4 Select sub contrast and adjust to 7 5 Select the Green Drive and adjust so that the white balance becomes optimum 6 Select the Blue Drive and adjust so that the white balance becomes optimum 7 Press the TV button to return to TV operation G2 Set...

Page 28: ...stment using the button on the commander 5 Move the button to the right to enter the selected adjustment 6 Turn off the power to quit the service mode when adjustments are completed TEST MENU Picture adjustment Geometry Wide MSP IC status Current TV status PICTURE ADJUSTMENT AFC mode 1 REF position 2 SCP BGR 1 SCP BGF 1 Trap Fo 0 Sub contrast Adj Sub colour Adj Sub brightness Adj Sub hue Adj Green...

Page 29: ...al SUB CONTRAST ADJUSTMENT 1 Input a video that contains a small 100 area on a black background 2 Set the picture control to maximum 3 Connect an oscilloscope to pin 3 of CN301 A board 4 Enter into the Picture Adjustment Service Menu 5 Adjust the Sub contrast data to obtain a black to white amplitude of 2 50 volts SUB COLOUR ADJUSTMENT 1 Receive a PAL Colour Bar video signal 2 Connect an oscillosc...

Page 30: ...er socket 2 Enter into the I F adjustment service mode i e TT 59 to fix the I F frequency to 34 2 MHz 3 Enter into the service mode and select Current TVStatus 4 Adjust the RV02 until the AFT Status indicates a Window condition 1 Input an off air signal of between 60 100dBuV 75 ohm terminated via the tuner socket 2 Enter into the I F adjustment service mode i e TT 59 to fix the I F frequency to 38...

Page 31: ...D 7 2 K n o i t a n i t s e D 8 2 L n o i t a n i t s e D 9 2 E n o i t a n i t s e D 0 3 n o i t c n u f o N 1 3 A n o i t a n i t s e D 2 3 R n o i t a n i t s e D 3 3 e l b a n E r e f o o W b u S 4 3 e l b a s i D r e f o o W b u S 5 3 h c t i w s p a r t p u t e S 6 3 t s e t n o i t a t o R 7 3 s l e d o m e d i W 4 2 5 2 t e S 8 3 s l e d o m e d i W 8 2 9 2 t e S 9 3 e l b a n E m a c i N ...

Page 32: ... F F O d o M y t i c o l e V 3 8 s m 0 4 p e t s e s i R e r u t c i P 4 8 s m 0 8 p e t s e s i R e r u t c i P 5 8 s m 0 6 1 p e t s e s i R e r u t c i P 6 8 F F O e s i R e r u t c i P 7 8 e d o m p o h S t c e l e S 8 8 e l b a s i D n o i t i s i u q c A t x e T t c a p m o C 9 8 e l b a n E n o i t i s i u q c A t x e T t c a p m o C 0 9 n o i t c n u f o N 1 9 L A M R O N e d o m e r t n e...

Page 33: ... P U R E W O P w o L D X R L 3 M 2 1 Y L N O P U R E W O P w o L E L B A N E L 3 M 3 1 Y L N O P U R E W O P w o L D X R D X T L 3 M 4 1 Y L N O P U R E W O P l i a f t s e t t x e T t c a p m o C 5 1 t e s e r n o r e w o p t o n n a c h c t i w s V A n o i t a s i l a i t i n I s i s s a h C 6 1 d e k c e h c n o r e w o p l a i t i n i r e t f a e l g n u j e s i l a i t i n i t o n n a C n o i...

Page 34: ...IN S902 S900 S901 D601 D619 PROTECT 15V 2 3 CN601 1 DGC THP600 RY600 1 4 CN603 AC IN AC IN AC IN POWER S601 LF600 LF601 L F T F601 RELAY DRIVE Q607 POWER OFF SWITCH Q605 606 D617 625 T601 SRT 21V D614 21V RECT 21V D613 21V RECT D610 7 5V RECT D611 7 5V RECT IC604 7 5V STDBY 5V 5V 15V D612 15V RECT D609 135V RECT D608 D626 MAIN RECT D600 SOFT START Q601 D603 REF D604 IC600 POWER CONTROL INH F B OCP...

Page 35: ...IN S902 S900 S901 D601 D619 PROTECT 15V 2 3 CN601 1 DGC THP600 RY600 1 4 CN603 AC IN AC IN AC IN POWER S601 LF600 LF601 L F T F601 RELAY DRIVE Q607 POWER OFF SWITCH Q605 606 D617 625 T601 SRT 21V D614 21V RECT 21V D613 21V RECT D610 7 5V RECT D611 7 5V RECT IC604 7 5V STDBY 5V 5V 15V D612 15V RECT D609 135V RECT D608 D626 MAIN RECT D600 SOFT START Q601 D603 REF D604 IC600 POWER CONTROL INH F B OCP...

Page 36: ...3 31 Vp p V 7 1 0 Vp p H 28 Vp p H 3 0 Vp p H 178 Vp p H 140 Vp p H 5 5 Vp p V 4 8 10 11 13 12 5 1 0 Vp p H 1 4 Vp p H 6 3 5 Vp p H 1 3 0 Vp p H 2 WAVEFORMS A BOARD 1 5 Vp p H 8 0 9 Vp p H 8 3 0 Vp p H 3 0 6 Vp p H 7 0 5 Vp p H 9 PAL SECAM PAL NTSC SECAM NTSC PAL SECAM 3 NTSC 4 7 SECAM 8 PAL 9 NTSC 10 2 3 Vp p H 5 1 Vp p H 0 5 Vp p H 0 8 Vp p H 0 4 Vp p H 1 0 Vp p H ...

Page 37: ...RD IC4 PST593C OSC 3 1 4 2 DELAY T R Q Vcc V out GND Reset D BOARD IC500 STV9379 Vcc GND THERMAL PROTECTION 1 POWER AMP 7 5 4 6 8 2 OUTPUT FLYBACK GENERATOR OUTPUT STAGE SUPPLY INVERTING INPUT NON INVERTING INPUT FLYBACK GENERATOR D BOARD IC600 STR S6708 PRE REG START UP OVP REF 1 2 8 7 PROPORTIONAL DRIVE 5 4 3 6 OSC THERMAL LATCH 9 DFP 60 59 56 57 SBUS Interface IDENT A D SCART Switching Faciliti...

Page 38: ......

Page 39: ......

Page 40: ......

Page 41: ......

Page 42: ......

Page 43: ......

Page 44: ...1091 O 2SC3502 E 2SC3601 E 2SC2808STP R E C B C B E DTC144EK 2SA1037K 2SA1162 G 2SC2412K SBX1790 51 1 2 3 1 V OUT 2 V IN 3 GND SE135N MSP3400C PS C6 T MSP3410B PS F7 T PST593C MMP 4P TOP VIEW SDA5250M C5 GEG TOP VIEW 4 1 2 3 TOP VIEW 68 61 60 1 52 44 43 35 27 26 18 10 9 1 20 21 40 41 60 61 80 TOP VIEW 1 32 30 21 29 4 13 5 20 14 8 7 6 5 1 3 4 TOP VIEW 2 LM393P M5216P TDA2822M µPC393C LM2940CT 5 0 L...

Page 45: ...MTZJ 5 6B MTZJ 6 2B MTZJ 6 8B MTZJ 7 5C MTZJ 9 1 MTZJ T 77 9 1A MTZJ 10 MTZJ 39 2SC4927 01 SLA 570KT3F B C E CATHODE ANODE FMS 3FU 1 2 3 1 2 3 E C B 2SA1837 E C B 2SC2785 HFE D4SB60L TLP721 D4 1 2 3 4 RD3 9ESB2 RD5 1ESB2 RD5 6ESB2 RD6 2ESB2 RD6 8ESB2 RD7 5ESB2 RD10ESB2 RD39ES B2 FML G12S GP08D RGP02 RGP10GPKG23 RGP15GPKG23 RU3YX V1 RU4AM T3 RU4DS MA8330 1SS355 UDZ TE 17 5 6B UDZ TE 17 9 1B 1SS133T...

Page 46: ...7 6 9 8 13 1 1 571 433 21 SWITCH PUSH AC POWER 2 4 203 315 01 BRACKET MAIN 3 A 1640 235 A D3 BOARD COMPLETE 4 4 203 404 01 BRACKET D3 5 1 765 286 11 CORD POWER 2 5A 250V KV 28WF1A 28WF1B 28WF1D 28WF1E 28WF1K 28WF1R 1 776 204 12 CORD POWER FILTER 3A 250V KV 28WF1U 6 4 202 531 01 AC CORD LOCK SC 7 A 1642 208 A D BOARD COMPLETE 8 1 453 220 11 TRANSFORMER ASSY FLYBACK UX 1670 U12B4 9 A 1640 214 A D2 B...

Page 47: ...F1B 28WF1E 28WF1U 55 4 203 724 01 WINDOW ORNAMENTAL 56 4 203 722 01 BUTTON POWER 57 4 202 964 01 SPRING 58 4 045 250 01 DAMPER 59 4 203 739 01 GUIDE LIGHT 60 4 203 870 01 SUPPORTER CRT 61 4 203 128 11 SHEET BLOTTING 62 4 042 940 21 UNIT LOCK 63 1 505 782 11 SPEAKER LOUD 64 7 685 661 14 SCREW BV TP 4X12 TYPE2 IT3 65 8 737 773 05 PICTURE TUBE SD 284T W66LGY011X 66 8 451 434 21 DEFLECTION YOKE Y28GIA...

Page 48: ... 10 25V C43 1 163 121 91 CERAMIC CHIP 150PF 10 50V C44 1 164 346 11 CERAMIC CHIP 1MF 16V C45 1 163 038 00 CERAMIC CHIP 0 1MF 25V C80 1 163 117 00 CERAMIC CHIP 100PF 5 50V C81 1 126 959 11 ELECT 0 47MF 20 50V C82 1 163 037 11 CERAMIC CHIP 0 022MF 10 50V C90 1 163 038 00 CERAMIC CHIP 0 1MF 25V C101 1 163 038 00 CERAMIC CHIP 0 1MF 25V C102 1 126 934 11 ELECT 220MF 20 16V C103 1 126 965 11 ELECT 22MF ...

Page 49: ...P 0 022MF 10 50V C324 1 163 037 11 CERAMIC CHIP 0 022MF 10 50V C325 1 164 346 11 CERAMIC CHIP 1MF 16V C326 1 163 141 00 CERAMIC CHIP 0 001MF 5 50V C327 1 137 374 11 FILM 0 047MF 5 50V C328 1 126 964 11 ELECT 10MF 20 50V C329 1 164 232 11 CERAMIC CHIP 0 01MF 10 50V C330 1 137 132 91 FILM 0 1MF 5 63V C331 1 137 581 11 FILM 0 1MF 5 100V C332 1 164 232 11 CERAMIC CHIP 0 01MF 10 50V C333 1 126 933 11 E...

Page 50: ...12 8 729 216 22 TRANSISTOR 2SA1162 G Q15 8 729 216 22 TRANSISTOR 2SA1162 G Q17 8 729 216 22 TRANSISTOR 2SA1162 G Q80 8 729 620 06 TRANSISTOR 2SC3052 EF Q81 8 729 216 22 TRANSISTOR 2SA1162 G Q82 8 729 620 06 TRANSISTOR 2SC3052 EF Q110 8 729 620 06 TRANSISTOR 2SC3052 EF Q111 8 729 216 22 TRANSISTOR 2SA1162 G Q112 8 729 620 06 TRANSISTOR 2SC3051 EF Q120 8 729 620 06 TRANSISTOR 2SC3052 EF Q121 8 729 6...

Page 51: ... 025 00 METAL GLAZE 100 5 1 10W R91 1 216 025 00 METAL GLAZE 100 5 1 10W R92 1 216 025 00 METAL GLAZE 100 5 1 10W R93 1 216 033 00 METAL GLAZE 220 5 1 10W R94 1 216 033 00 METAL GLAZE 220 5 1 10W R95 1 216 033 00 METAL GLAZE 220 5 1 10W R99 1 216 065 00 METAL GLAZE 4 7K 5 1 10W R101 1 216 061 00 METAL GLAZE 3 3K 5 1 10W R102 1 216 025 00 METAL GLAZE 100 5 1 10W R103 1 216 025 00 METAL GLAZE 100 5 ...

Page 52: ...AZE 100 5 1 10W R296 1 216 025 71 METAL GLAZE 100 5 1 10W R300 1 216 025 00 METAL GLAZE 100 5 1 10W R301 1 216 033 00 METAL GLAZE 220 5 1 10W R302 1 216 295 00 CONDUCTOR CHIP 2012 R303 1 216 295 00 CONDUCTOR CHIP 2012 R308 1 216 025 00 METAL GLAZE 100 5 1 10W R309 1 216 033 00 METAL GLAZE 220 5 1 10W R310 1 216 033 00 METAL GLAZE 220 5 1 10W R311 1 216 295 00 CONDUCTOR CHIP 2012 R312 1 216 295 00 ...

Page 53: ... 1 216 089 91 METAL GLAZE 47K 5 1 10W R03 1 216 089 91 METAL GLAZE 47K 5 1 10W R04 1 216 057 00 METAL GLAZE 2 2K 5 1 10W R05 1 216 081 00 METAL GLAZE 22K 5 1 10W R06 1 216 057 00 METAL GLAZE 2 2K 5 1 10W R07 1 216 025 91 METAL GLAZE 100 5 1 10W R08 1 216 174 00 METAL GLAZE 100 5 1 8W R09 1 216 045 00 METAL GLAZE 680 5 1 10W KV 28WF1A 28WF1D 28WF1E 28WX1K 28WF1R 1 216 049 91 METAL GLAZE 1K 5 1 10W ...

Page 54: ...XIDE 8 2K 5 3W F R715 1 249 417 11 CARBON 1K 5 1 4W R716 1 247 815 91 CARBON 220 5 1 4W R717 1 249 408 11 CARBON 180 5 1 4W R718 1 202 814 11 SOLID 33K 10 1 2W R719 1 535 143 11 LEAD JUMPER 10 0MM R720 1 247 843 11 CARBON 3 3K 5 1 4W IF KV 28WF1B C TRANSISTOR Q01 8 729 216 22 TRANSISTOR 2SA1162 G Q02 8 729 035 11 TRANSISTOR BF799 GEG Q03 8 729 035 11 TRANSISTOR BF799 GEG Q04 8 729 901 01 TRANSISTO...

Page 55: ...161 964 91 CERAMIC 0 0047MF 250V C602 1 161 964 91 CERAMIC 0 0047MF 250V C603 1 125 555 11 ELECT 330MF 20 400V C604 1 126 968 11 ELECT 100MF 20 50V C605 1 107 929 11 ELECT 10MF 20 100V C606 1 162 318 11 CERAMIC 0 001MF 10 500V R722 1 202 848 00 SOLID 680K 10 1 2W R723 1 249 417 11 CARBON 1K 5 1 4W R724 1 202 846 00 SOLID 470K 10 1 2W R726 1 260 103 11 CARBON 2 2K 5 1 2W R727 1 247 815 91 CARBON 22...

Page 56: ... 0047MF 2KV C822 1 107 662 11 ELECT 22MF 20 250V C824 1 123 024 21 ELECT 33MF 160V C829 1 126 959 11 ELECT 0 47MF 20 50V C830 1 126 959 11 ELECT 0 47MF 20 50V C832 1 126 960 11 ELECT 1MF 20 50V C834 1 128 551 11 ELECT 22MF 20 25V C835 1 162 318 11 CERAMIC 0 001MF 10 500V C836 1 162 117 00 CERAMIC 100PF 10 500V C837 1 102 978 00 CERAMIC 220PF 5 50V C838 1 102 228 00 CERAMIC 470PF 10 500V C839 1 136...

Page 57: ...EAD FB600 1 410 397 21 FERRITE BEAD INDUCTOR 1 1UH FB601 1 410 397 21 FERRITE BEAD INDUCTOR 1 1UH FB602 1 410 397 21 FERRITE BEAD INDUCTOR 1 1UH FB604 1 410 396 41 FERRITE BEAD INDUCTOR 0 45UH FB605 1 410 396 41 FERRITE BEAD INDUCTOR 0 45UH FB606 1 410 397 21 FERRITE BEAD INDUCTOR 1 1UH FB607 1 410 397 21 FERRITE BEAD INDUCTOR 1 1UH FB608 1 410 396 41 FERRITE BEAD INDUCTOR 0 45UH FB800 1 410 396 4...

Page 58: ...METAL OXIDE 56 5 1W F R622 1 249 437 11 CARBON 47K 5 1 4W R623 1 249 429 11 CARBON 10K 5 1 4W R624 1 249 393 11 CARBON 10 5 1 4W F R625 1 249 434 11 CARBON 27K 5 1 4W R626 1 249 430 11 CARBON 12K 5 1 4W R627 1 216 347 11 METAL OXIDE 0 68 5 1W F R628 1 249 415 11 CARBON 680 5 1 4W F D R629 1 260 135 11 CARBON 1M 5 1 2W R630 1 218 265 11 METAL 8 2M 5 1W R631 1 202 961 11 WIREWOUND 1 8 5 10W R632 1 2...

Page 59: ... 776 11 LFT LF601 1 421 776 11 LFT T601 1 429 605 11 TRANSFORMER CONVERTER T800 1 426 981 11 TRANSFORMER FERRITE PMT T803 8 453 220 11 TRANSFORMER ASSY FLYBACK NX 1670 U2B4 T804 1 437 090 31 HDT THERMISTOR THP600 1 809 827 11 THERMISTOR POSITIVE A 1644 070 A VM BOARD COMPLETE CAPACITOR C1701 1 126 933 11 ELECT 100MF 20 16V C1702 1 128 551 11 ELECT 22MF 20 25V C1703 1 126 933 11 ELECT 100MF 20 16V ...

Page 60: ...SK 15MM Ø 1 453 220 11 TRANSFORMER ASSY FLYBACK UX 1604A2 1 505 782 11 SPEAKER 8CM 1 571 433 21 SWITCH PUSH AC POWER 1 693 338 11 TUNER TUVIF AEP KV 28WF1A 28WF1D 28WF1E 28WF1K 28WF1R 1 693 340 11 TUNER TUVIF FR KV 28WF1B 1 693 339 11 TUNER TUVIF UK KV 28WF1U 1 765 286 11 CORD POWER 2 5A 250V KV 28WF1A 28WF1B 28WF1D 28WF1E 28WF1K 28WF1R 1 776 204 12 CORD POWER FILTER 3A 250V KV 28WF1U 8 451 434 11...

Page 61: ...ified Les composants identifies par une trame et une marque sont critiques pour la securite Ne les remplacer que par une piece portant le numero specifie REF NO PART NO DESCRIPTION REMARK REF NO PART NO DESCRIPTION REMARK 1997 7 Printed in U K English Sony Corporation Sony UK Service Promotions Div 9 974 957 01 97GP7187 1 ...