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Sony KV-21FT1B, Service Manual

The Sony KV-21FT1B Service Manual is a comprehensive user guide for the Sony KV-21FT1B television model. This manual provides detailed instructions, troubleshooting tips, and maintenance procedures, ensuring optimal usage and performance. Download this free manual from our website, the ultimate destination for user manual downloads.

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 [

 

C

  PRINTED WIRING BOARD 

]

  

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[

 R, G, B OUT 

]

 [

 

A

 PRINTED WIRING BOARD 

]

20us/div

20us/div

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20us/div

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20us/div

10us/div

1.77 Vp-p (H)

1.88 Vp-p (H)

1.88 Vp-p (H)

74 Vp-p (H)

74 Vp-p (H)

TP1

TP2

TP3

TP4

C board Waveforms

1.76 Vp-p (H)

74 Vp-p (H)

TP4

TP5

TP6

TP7

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A board Waveforms

1.83 Vp-p (V)

20us/div

TP7

20us/div

TP6

16.8 Vp-p (H)

5ms/div

49.8 Vp-p (V)

TP8

20us/div

1.86 Vp-p (H)

TP3

20us/div

6.0 Vp-p (H)

TP4

20us/div

5.4 Vp-p (H)

TP5

20us/div

1.84 Vp-p (H)

TP2

20us/div

1.88 Vp-p (H)

TP1

5ms/div

488 mVp-p (V)

TP9

TP10

1.06 kVp-p (H)

20us/div

5ms/div

50.8 Vp-p (V)

TP11

NOTE:
Portions of the circuit marked as shown are high
voltage areas. Use care to prevent electric shock
during inspection or repair.

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A board Semiconductor Voltage Table

A board Location Table

A board IC Voltage Table

Summary of Contents for KV-21FT1B

Page 1: ... FE 2CHASSIS MODEL COMMANDER DEST CHASSIS NO KV 21FT1B RM 887 French SCC Q54A A KV 21FT1E RM 887 Spanish SCC Q53A A MODEL COMMANDER DEST CHASSIS NO KV 21FT1K RM 887 OIRT SCC Q51A A KV 21FT1U RM 887 UK SCC Q52A A RM 889 ...

Page 2: ...NG ANY SERVICE WORK TO AVOID POSSIBLE SHOCK HAZARD DUE TO LIVE CHASSIS THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO THE POWER LINE SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY SHADING AND MARKED ON THE SCHEMATIC DIAGRAMS EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANU...

Page 3: ...n o g a i d n o i t c e l f e d e e r g e d 0 1 1 t u p t u o d n u o S r e w o P c i s u M W 8 x 1 o n o M S M R W 4 x 1 R A E R s l a n i m r e T t u p t u O t u p n I s t n e m e r i u q e R r e w o P V 0 4 2 0 2 2 r o t c e n n o c o r u E n i p 1 2 1 d r a d n a t s C E L E N E C s l a n g i s o e d i V d n a o i d u A r o f s t u p n I B G R r o f s t u p n I s l a n g i s o i d u A d n a o ...

Page 4: ... a 5 AMPFUSE otherwise the circuit should be protected by a 5 AMP FUSE at the distribution board e m a N l e d o M m e t I B 1 T F 1 2 V K E 1 T F 1 2 V K K 1 T F 1 2 V K U 1 T F 1 2 V K b m o C l a P F F O F F O F F O F F O P I P F F O F F O F F O F F O y t i r o i r P B G R N O N O F F O N O x o B r e f o o W F F O F F O F F O F F O 1 t r a c S N O N O N O N O 2 t r a c S F F O F F O F F O F F O...

Page 5: ...t mode Low state 0 2V TV mode Input impedence More than 10K ohms Input capacitance Less than 2nF 9 Ground green 10 Open 11 Green Green signal 0 7 3dB 75 ohms positive 12 Open 13 Ground red 14 Ground blanking 15 _ _ Red input 0 7 3dB 75 ohms positive _ S signal Chroma input 0 3 3dB 75 ohms positive 16 Blanking input Ys signal High state 1 3V Low state 0 0 4V Input impedence 75 ohms 17 Ground video ...

Page 6: ...tal errors are reported using this method Each time the software detects an error it is stored within the NVM See Table 2 Flash Timing Example e g error number 3 StBy LED ON ON ON OFF OFF e g a s s e M r o r r E D E L e d o C r o r r e o N 0 0 d e v r e s e R 1 0 n o i t c e t o r P t n e r r u C r e v O P C O 2 0 d e v r e s e R 3 0 c n y S l a c i t r e V o N 4 0 B K A e l b a t s n U 5 0 n o r ...

Page 7: ...ng Yes No OK K K K Switching On the TV and Automatically Tuning The first time you switch on your TV a sequence of menu screen appear on the TV enabling you to 1 choose the language of the menu screen 2 choose the country in which you wish to operate the TV 3 search and store all available channels TV Broadcast and 4 change the order in which the channels TV Broadcast appear on the screen However ...

Page 8: ...ss or to set the time period delay max of 4 hours and finally press OK to store While watching the TV you can press the button on the remote control to display the time remaining One minute before the TV switches itself into standby mode the time remaining is displayed on the TV screen automatically ON TIMER The On Timer option in the Timer menu allows you to select a time period for the TV to swi...

Page 9: ... Up Language Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features OK Set Up Language Country Auto Tuning Programme Sorting Manual Programme Preset Advanced Features OK Manual Programme Preset Programme System Channel Label AFT Skip Decoder Confirm OK 01 B G C 21 TVE On No Off 11 GB Menu System continued 3 After selecting the Channel option press Then press or to select t...

Page 10: ... Weather 25 153 101 98 TELETEXT Index Programme News Sport Weather 25 153 101 98 TELETEXT Index Programme News Sport Weather 25 153 101 98 TELETEXT Index Programme News Sport Weather 25 153 101 98 15 GB Connecting Optional Equipment Using the following instructions you can connect a wide range of optional equipment to your TV set Connecting cables are not supplied Connecting a VCR To connect a VCR...

Page 11: ...atures menu to correct the picture slant Using the menu system select the Manual Programme Preset menu and adjust Fine Tuning AFT to obtain better picture reception Using the menu system select the Noise Reduction option in the Advanced Features menu and select On to reduce the noise in the picture Replace the batteries Contact to your nearest Sony service centre In case of problems have your TV s...

Page 12: ...m the beznet Ensure that the interconnecting leads are released from their purse locks to prevent damage being caused Position the A board as shown to gain access to its solder side Take care not to trap the interconnecting leads in the process 2 3 Service Position 2 2 Chassis Removal and Refitting 2 4 Wire Dressing Ensure that all wires do not touch heat sinks and high tempera ture hot spots All ...

Page 13: ...e shatter hook sticks out Removal of the Anode Cap 2 5 Picture Tube Removal WARNING BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected To avoid electric shock discharge CRT before attempting to remove the anode cap Short between anode and CRT coated earth ground strap Coated Earth Ground Strap 1 Discharge the anode of the CRT and remove the anode cap...

Page 14: ... Green and verify the condition 6 When the position of the deflection yoke has been determined fasten the deflection yoke with the screws 7 If the beam does not land correctly in all the corners use a magnet to correct it See Fig 3 4 When complete readjustment is necessary or a new picture tube is installed carry out the following adjustments Unless there are specific instructions to the contrary ...

Page 15: ...TAT magnet influence each other The movement of the magnets interact with each other and so the respective dot position should be monitored while carrying out this adjustment Use the H STAT VR to adjust the Red Green and Blue dots so that they coincide at the centre of the screen by moving the dots in the horizontal direction Operation of the BMC Hexapole magnet G B R G B R G B R G B R G B R G B R...

Page 16: ... deflection yoke spacer 2 Tilt the deflection yoke as indicated in the figure below and optimise the geometry Tilting the DY Up and Down will balance the upper and lower pin adjustment Tilting the DY Left and Right will balance the H Trap adjustment 3 Re install the deflection yoke spacer YCH VR Deflection Yoke Deflection Yoke TLV VR Screen Corner Convergence TLH pieces Deflection Yoke Tilt Direct...

Page 17: ...EEN located on the Flyback Transformer to the point just before the flyback return lines disappear Layout of each control 1 Input an all white signal from the pattern generator 2 Enter into the Service Mode by pressing TEST TEST and MENU on the Service Commander 3 Select Service from the on screen menu display and press the right arrow button on the remote commander 4 The Service menu will appear ...

Page 18: ... 0 E 8 0 E 9 0 E 0 1 E 1 1 E G N I K R O W E M I T S R U O H S E T U N I M P C O A N P V O C N Y S V R K I C I I M V N E L G N U J R E N U T P D N U O S V 8 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 5 5 2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Turn on the main power switch and enter into the stand by mode 2 Press the following sequence of buttons on the Remote Commander y r t e ...

Page 19: ...st register value For destination France set the value to 6 All other destinations set the value to 0 2 Receive a signal of 64dBuV 75 ohm terminated 62dBuV 75 ohms for B model via the tuner antenna socket 3 Connect a voltmeter to pin1 of TU101 print side of A Board or to the AGC pin of CN001 mount side of A Board 4 Confirm that the AGC voltage is 3 5volts 0 3volts 5 If adjustment is required enter...

Page 20: ...x e T 5 1 t s e T n o i t a t o R e r u t c i P 6 1 0 5 l e v e l e r u t c i P 9 1 e d o M y r o t c a F e l g g o T 1 2 E D A n o i t a n i t s e D 2 2 L B n o i t a n i t s e D 3 2 E D A n o i t a n i t s e D 4 2 U n o i t a n i t s e D 5 2 E D A n o i t a n i t s e D 6 2 L B n o i t a n i t s e D 7 2 R K n o i t a n i t s e D 8 2 R K n o i t a n i t s e D 1 3 e l b a n E e l b a s i D f f o t ...

Page 21: ...21 Memo ...

Page 22: ...or bar input signal Voltage variations may be noted due to normal production tolerences B bus B bus RF signal path earth ground earth chassis Reference Information RESISTOR RN METAL FILM RC SOLID FPRD NON FLAMMABLE CARBON FUSE NON FLAMMABLE FUSIBLE RS NON FLAMMABLE METAL OXIDE RB NON FLAMMABLE CEMENT RW NON FLAMMABLE WIREWOUND ADJUSTMENT RESISTOR COIL LF 8L MICRO INDUCTOR CAPACITOR TA TANTALUM PS ...

Page 23: ... Q606 Q607 6 5 4 7 3 LOWB D624 D622 D618 D619 VM VCC QCP DETECT Q612 602 1 4 CN1201 J1200 R AUDIO 64 XTAL IN 48 AUDIO MUTE 5 AUD OUT CV6520 6 67 2 1 VCC OUT IC002 REMOTE CONTROL RECEIVER 3 3V STBY 6 5 2 3 7 1 5V STBY IC201 AUDIO AMP MUTE 1 IN INL 10 14 OUT L H DRIVE Q535 FUNCTION SWITCH S001 S006 68 IC401 AV LINK 5V STBY 69 R0 58 A10 B10 1 2 3 4 G0 57 B0 56 IK 55 GREEN BLUE IK EWD 17 VD 18 VD 19 A...

Page 24: ...3 4 4 1 6 6 1 8 5 4 0 7 8 7 7 6 4 0 9 8 1 8 7 4 6 3 0 1 6 7 8 4 8 2 1 1 9 1 8 9 4 3 2 2 1 4 9 7 0 5 2 0 4 1 5 6 1 1 5 5 2 5 1 1 1 2 5 5 2 6 1 4 4 1 3 5 5 2 8 1 4 6 8 4 5 1 2 1 0 2 1 C I 1 1 1 5 5 2 5 3 9 4 6 5 0 3 5 0 7 5 1 3 6 0 8 5 1 3 7 3 1 1 9 5 2 3 9 3 0 2 6 0 0 1 0 3 6 0 2 1 0 4 6 0 4 1 5 3 1 1 5 6 0 f e R e b c f e R e b c 3 1 0 Q 0 7 0 0 4 0 6 Q 0 0 5 2 6 1 0 Q 0 0 3 3 8 0 6 Q 0 0 6 5 2 1 ...

Page 25: ...A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 35 34 33 31 32 30 29 32 33 31 ...

Page 26: ...B A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 A 34 35 36 ...

Page 27: ...9P TOP VIEW 1 4 8 5 B C E 8 7 6 5 1 3 4 TOP VIEW 2 LM393DT TDA2822M TEA2124 IRF614 LF 5 4 SEMICONDUCTORS B C E LETTER SIDE 2SA933AS QRT 2SAG33ASQT 2SA933AS RT 2SC1740S RT 2SC2785 HFE E C B 2 1 3 1 3 2 DAN202K DAN202K T146 2SK2251 01 F19 E B C CATHODE ANODE D4SB60L F AK04 V1 AU 01Z V1 BYD33G BYD33G AMMO DINL20 U TA2 DINL40 U TR2 ERB44 06TP1 EGP20G EG 1Z V1 EL1Z ERD28 06S ERD28 06S ERC06 15SL FMN G1...

Page 28: ...ZJ T 77 6 8C MTZJ T 77 8 2B MTZJ T 77 7 5B MTZJ T 77 9 1A MTZJ T 77 9 1C MTZJ T 77 10 MTZJ T 77 15B MTZJ T 77 33A MTZJ 33C MTZJ 7 5B RD3 9ES B2 RD5 6ESB2 RD6 8ES B2 RD7 5ESB2 RD9 1ES B3 RD10ESB2 RD15ESB2 1SS119 25TD 1SS133T 77 CATHODE ANODE UF4005PKG23 CATHODE ANODE 1SS355TE 17 RD12SB2 UDZS TE 17 4 7B UDZS TE 17 5 6B UDZS TE 17 6 8B UDZS TE 17 9 1B UDZ TE 17 22B ...

Page 29: ...atch Centre Osc SS F B Timer TSD OCP Control Logic Level Shift Sel 34v ref 5v 15v 8v Driver Reg 10v 18 8 14 16 15 10 12 11 9 14 2 6 5 SW 1 VOL PWR 15 3 Pwr Gnd Sgn Gnd 2K 4 3 7 9 10 MUTE STBY PROTECTION 13 Vcc A BOARD IC604 BA41W12ST A BOARD IC401 IC531 LM393TD A BOARD IC601 MCZ3001D A BOARD IC1201 TDA7494 ...

Page 30: ...SWITCH PUSH AC POWER 2 4 202 531 01 AC CORD LOCK SC 3 1 765 286 11 CORD POWER KV 21FT1B 21FT1E 21FT1K 1 776 860 11 POWER CORD FILTER KV 21FT1U 4 4 204 517 01 SUPPORT FBT 5 1 453 345 11 TRANSFORMER ASSY FLYBACK NX 1748 M3A4 6 8 598 535 00 FRONTEND BTF EF411 KV 21FT1B 8 598 531 00 FRONTEND BTF EC401 KV 21FT1E 8 598 537 00 FRONTEND BTF EP401 KV 21FT1K 8 598 527 00 FRONTEND BTF EU601 KV 21FT1U 7 A 163...

Page 31: ...61 1 452 728 61 COIL NA ROTATION RT 154 62 A 1639 004 A C BOARD COMPLETE 63 4 369 318 21 SPRING TENSION 64 1 419 187 11 COIL DEGAUSSING 65 4 203 390 11 CUSHION DGC 66 4 204 900 01 BAND DGC 67 1 251 839 21 CAP ASSY HIGH VOLTAGE 68 3 704 495 01 SPACER DY 69 4 365 808 01 SCREW 5 TAPPING 70 1 529 710 11 SPEAKER 5X9CM 71 7 685 648 79 SCREW BVTP 3X12 TYPE 2 IT 3 72 4 308 870 00 CLIP LEAD WIRE 73 1 452 0...

Page 32: ...ed Model KV 21FT1B 49 KV 21FT1E 49 KV 21FT1K 49 KV 21FT1U 49 C BOARD COMPLETE Parts List 49 MISCELLANEOUS 51 ACCESSORIES AND PACKAGING MATERIALS 51 Note Refer to the designated variant parts list when seeking a part indicated by an asterisk Parts indicated XX on the Schematic Diagram are not used in this model and therefore do not appear in the Parts List SECTION 7 ELECTRICAL PARTS LIST ...

Page 33: ...HIP 0 22UF 10 00 16V C046 1 163 037 11 CERAMIC CHIP 0 022UF 10 00 50V C047 1 126 935 11 ELECT 470UF 20 00 16V C051 1 163 109 00 CERAMIC CHIP 47PF 5 00 50V C053 1 164 004 11 CERAMIC CHIP 0 1UF 10 00 25V C055 1 216 295 91 SHORT 0 C100 1 126 933 11 ELECT 100UF 20 00 16V C103 1 126 965 11 ELECT 22UF 20 00 50V C105 1 163 021 91 CERAMIC CHIP 0 01UF 10 00 50V C106 1 126 933 11 ELECT 100UF 20 00 16V C110 ...

Page 34: ... 126 963 11 ELECT 4 7UF 20 00 50V C630 1 107 640 41 ELECT 100UF 20 00 160V C631 1 126 942 61 ELECT 1000UF 20 00 25V C632 1 126 964 11 ELECT 10UF 20 00 50V C633 1 163 009 11 CERAMIC CHIP 0 001UF 10 00 50V C635 1 136 165 00 MYLAR 0 1UF 5 00 50V C636 1 136 479 11 FILM 0 001UF 2 00 50V C637 1 126 967 11 ELECT 47UF 20 00 50V C638 1 107 679 91 ELECT 10UF 20 00 450V C639 1 104 665 11 ELECT 100UF 20 00 25...

Page 35: ...08DPKG23 D514 8 719 908 03 DIODE GP08DPKG23 D534 8 719 908 03 DIODE GP08DPKG23 D535 8 719 908 03 DIODE GP08DPKG23 D536 8 719 945 80 DIODE ERC06 15SL D537 8 719 110 14 DIODE MTZJ T 77 9 1C D538 8 719 908 03 DIODE GP08DPKG23 D539 8 719 928 08 DIODE ERD28 06S D541 1 535 303 00 LEAD JUMPER 5 0MM D573 8 719 976 96 DIODE UDZ TE 17 4 7B D601 8 719 510 53 DIODE D4SB60L F D602 8 719 911 19 DIODE 1SS119 25T...

Page 36: ...MM PHOTO COUPLER PH601 8 749 016 21 IC TCET1103G TRANSISTOR Q013 8 729 120 28 TRANSISTOR 2SC2412K T 146 R Q016 8 729 120 28 TRANSISTOR 2SC2412K T 146 R Q212 8 729 422 33 TRANSISTOR 2PD601AR 115 Q401 8 729 026 49 TRANSISTOR 2SA1037AK T146 QR Q411 8 729 120 28 TRANSISTOR 2SC2412K T 146 R Q532 8 729 053 33 TRANSISTOR IRF614 037 Q533 8 729 051 82 TRANSISTOR BU4508DX ON5210 Q535 8 729 053 33 TRANSISTOR...

Page 37: ...10K 5 1 10W R068 1 216 083 00 RES CHIP 27K 5 1 10W R069 1 216 073 00 RES CHIP 10K 5 1 10W R070 1 216 025 91 RES CHIP 100 5 1 10W R071 1 216 049 91 RES CHIP 1K 5 1 10W R072 1 216 295 91 SHORT 0 R074 1 216 073 00 RES CHIP 10K 5 1 10W R075 1 216 295 91 SHORT 0 R089 1 216 081 00 RES CHIP 22K 5 1 10W R090 1 216 057 00 RES CHIP 2 2K 5 1 10W R092 1 216 073 00 RES CHIP 10K 5 1 10W R093 1 216 081 00 RES CH...

Page 38: ...HIP 2 2M 5 1 10W R546 1 215 894 11 METAL OXIDE 2 2K 5 2W R547 1 215 886 11 METAL OXIDE 100 5 2W R548 1 212 849 00 FUSIBLE 4 7 5 1 4W R549 1 216 369 00 METAL OXIDE 1 5 2W R551 1 215 873 00 METAL OXIDE 4 7K 5 1W R552 1 216 097 91 RES CHIP 100K 5 1 10W R553 1 249 381 11 CARBON 1 5 1 4W R554 1 216 254 00 RES CHIP 220K 5 1 8W R557 1 216 065 91 RES CHIP 4 7K 5 1 10W R558 1 216 025 91 RES CHIP 100 5 1 10...

Page 39: ...1 SWITCH PUSH AC POWER SW532 1 572 707 11 SWITCH LEVER TRANSFORMER T511 1 453 345 11 TRANSFORMER ASSY FLYBACK NX 1748 M3A4 T531 1 437 210 11 TRANSFORMER HORIZONTAL DRIVE T601 1 435 487 11 TRANSFORMER LINE FILTER T602 1 431 732 31 TRANSFORMER CONVERTER SRT T603 1 435 525 11 TRANSFORMER CONVERTER PIT THERMISTOR TH601 1 803 586 11 THERMISTOR NTC THP601 1 808 059 31 THERMISTOR POSITIVE VARISTOR VDR601...

Page 40: ...719 991 33 DIODE 1SS133T 77 D1801 8 719 110 17 DIODE MTZJ T 77 10 D1802 8 719 110 17 DIODE MTZJ T 77 10 D1803 8 719 110 17 DIODE MTZJ T 77 10 IC IC1801 8 759 603 37 IC M5216P SOCKET J701 1 251 595 11 SOCKET CRT COIL L704 1 414 183 41 INDUCTOR 10UH TRANSISTOR Q701 8 729 046 28 TRANSISTOR BF420 126 Q702 8 729 119 78 TRANSISTOR 2SC1740S RT Q703 8 729 046 28 TRANSISTOR BF420 126 Q704 8 729 200 17 TRAN...

Page 41: ...SSING 1 452 032 00 MAGNET DISK 10MM 1 452 094 00 MAGNET ROTATABLE DISK 15MM 1 453 345 11 TRANSFORMER ASSY FLYBACK NA 1748 M3A4 1 529 710 11 SPEAKER 5X9CM 1 452 728 61 COIL NA ROTATION RT 154 1 571 433 21 SWITCH PUSH AC POWER 1 765 286 11 CORD POWER KV 21FT1B 21FT1E 21FT1K 1 776 860 11 POWER CORD FILTER KV 21FT1U 8 738 836 05 PICTURE TUBE A51LPT60X 8 598 535 00 FRONTEND BTF EF411 KV 21FT1B 8 598 53...

Page 42: ...e modules Please contact your local Sony Service organisation for the latest information Read restore and compare NVM contents via the I2C bus Acknowledge check of all I2C devices in the TV set Read Error Codes emulation of the Error Reader tool Remote Commander emulation User programmable Functional Check through Infrared Fast and documented Test Mode setting of all Sony TV chassis Partnumbers TR...

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