Sony KV-T21PF1, Service Manual

Page 1: ...TRINITRON COLOR TV MODEL COMMANDER DEST CHASSIS NO KV T21PF1 RM 870 India SCC K67D A SERVICE MANUAL MODEL COMMANDER DEST CHASSIS NO BG 1S D CHASSIS ...

Page 2: ...FICATIONS Note Power requirements 110 240 V AC 50 60 Hz Power consumption W Indicated on the rear of the TV Television system B G Color system PAL PAL 60 NTSC4 43 NTSC3 58 AV IN Channel coverage B G VHF E2 to E12 UHF E21 to E69 CATV S01 to S03 S1 to S41 Audio output speaker 3W 3W Inputs Antenna 75 ohms VIDEO IN jacks phono jacks Video 1 Vp p 75 ohms Audio 500mVrms high impedance Outputs Headphone ...

Page 3: ... Diagram of A Board 29 2 Schematic Diagrams of A11 A12 and C Boards 33 6 4 Semiconductors 37 7 EXPLODED VIEW 39 8 ELECTRICAL PARTS LIST 41 1 GENERAL 4 2 DISASSEMBLY 2 1 Rear Cover Removal 10 2 2 A Board Removal 10 2 3 Service Position 10 2 4 Replacement of parts 11 2 4 1 Replacement of Multi Button 11 2 4 2 Replacement of Light Guide and Power Button 11 2 5 Demagnetization Coil Removal 11 2 6 Pict...

Page 4: ...ctions mentioned here are partial abstracts from the Operating Instructions Manual The page numbers of the Operating Instruction Manual remain as in the manual 2 3 B G I D K M TV SYSTEM AUTO PROGR TV SYSTEM AUTO PROGR Note TV SYSTEM is not used for this model ...

Page 5: ... the screen to antenna output or MONITOR OUT Rear of TV When recording through the MONITOR OUT jacks If you change the channel or video input while recording with a VCR the channel or video input you are recording also will be changed to antenna socket Audio system Connecting optional equipment You can connect optional audio video equipment to your TV such as a VCR multi disc player camcorder vide...

Page 6: ... mode press POWER on the remote commander 2 Press TV SYSTEM until your local TV system appears This is not for this model 3 Press AUTO PROGR To start presetting channels automatically from the specified program position 1 Press MANUAL PROGR 2 Press TV SYSTEM to select your local TV system This is not for this model 3 Press PROGR to select the program position 4 Press AUTO PROGR 2 3 1 MANUAL PROGR ...

Page 7: ...hts up To turn off the TV completely Press POWER on the TV If the power on the TV is turned off in standby mode the STANDBY indicator on the TV may remain alight for a while Watching the video input Press VIDEO HOLD To watch TV Press TV Switching back quickly to the previous channel Press JUMP Muting the sound Press MUTING 2 5 PROGR Operations VIDEO 1 POWER JUMP POWER VOL POWER MUTING MUTING TV Ge...

Page 8: ...ay appears and the WAKE UP indicator on the TV lights up 2 If you want a particular TV program or video input to be displayed using the Wake Up Timer select the TV program or video input 3 Press POWER on the remote commander or set the Sleep Timer to turn off the TV in standby mode To cancel the Wake Up Timer press WAKE UP INDEX repeatedly until WAKE UP TIMER OFF appears or turn off the main power...

Page 9: ...he TV to switch off the TV for five minutes and then switch it on again WARNING Do not install the appliance in a confined space such as a bookcase or built in cabinet Operations 12 Adjusting the picture Adjusting the sound and picture settings 1 Press SELECT until the item you want to adjust appears Each time you press SELECT the screen changes as follows 2 Press or to adjust the item 3 To adjust...

Page 10: ... 10 KV T21PF1 RM 870 2 1 REAR COVER REMOVAL 2 2 A BOARD REMOVAL 2 3 SERVICE POSITION SECTION 2 DISASSEMBLY 2 Two screws BVTP 4 16 3 One screw BVTP 3 16 1 Two screws BVTP 4 16 A board Lever Lever A board ...

Page 11: ...ortions from them exchange with the new parts and fix them with screws BVTP respectively 2 4 1 REPLACEMENT OF MULTI BUTTON 2 5 DEMAGNETIZATION COIL REMOVAL 2 4 2 REPLACEMENT OF LIGHT GUIDE AND POWER BUTTON Cut Light guide Power button Two screws BVTP 3 12 Two screws BVTP 3 12 1 Demagnetization coil 2 Tension spring Picture tube ...

Page 12: ... then pull up the rubber cap firmly in the direction indicated by the arrow b 3 When 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 c Anode button HOW TO HANDLE AN ANODE CAP 1 Do not damage the surface of anode caps with sharp shaped objects 2 Do not press the rubber too hard ...

Page 13: ...nput a white signal with the pattern generator Contrast Brightness 2 Set the pattern generator raster signal to a green raster 3 Move the deflection yoke to the rear and adjust with the purity control so that the green is at the center and the blue and the red take up equally sized areas on each side See Figures 3 1 through 3 3 4 Move the deflection yoke forward and adjust so that the entire scree...

Page 14: ...e points are on top of each other at the center of the screen 3 Tilt the V STAT magnet and adjust the static convergence by opening or closing the V STAT magnet B R B R a b b b a b a b a R G B b B G R b b a a 1 2 3 G G B G R R G B Operation of V STAT magnet If the V STAT magnet is moved in the direction of the a and b arrows the red green and blue points move as shown below Operation of BMC Hexapo...

Page 15: ...ion Before starting this adjustment adjust the horizontal static convergence and the vertical static convergence 1 Slightly loosen the deflection yoke screws 2 Remove the deflection yoke spacer 3 Screen corner Convergence a d screen corner misconvergence b a c d B G R B G R R G B R G B R G B R G B B G R B G R R G B B G R B G R R G B a d c b Fix a Permalloy assy corresponding to the misconverged ar...

Page 16: ...n plug into AC outlet again 2 Turn the power switch ON and set to Service Mode 3 Call the adjusted items again to confirm adjustments were made Item number Note Adjustment item Initial DATA 09 RDR 25 WHITE POINT R 0A GDR 20 WHITE POINT G 0B BDR 20 WHITE POINT B 3 4 G2 SCREEN AND WHITE BALANCE ADJUSTMENTS 1 G2 SCREEN ADJUSTMENT RV701 1 Set the PICTURE and BRIGHTNESS to normal 2 Put to VIDEO input m...

Page 17: ...times Flickering is operated by lighting the LED s for 60ss each time The flickering frequency responding to each failed device is shown below All the devices are checked one after another from the left of the table If an error is found the responding LED will start flickering So if more than 1 device have failed only the one on the left side will flicker Device Flickering Frequency NONVOLATILE ME...

Page 18: ...ting MUTING TEXT VIDEO HOLD TV TEXT CLR SELECT PIC MODE A B ENLARGE WAKE UP INDEX VOL PROGR SLEEP 1 2 3 4 5 6 7 8 9 0 DISPLAY REVEAL POWER 7 0 All data becomes the values in memory 8 0 All user control goes to the standard state 5 0 Service data initialization Be sure not to use usually 2 0 Write 50Hz adjustment data to 60Hz or viceversa The screen display is RM 870 SERVICE Mode 08 Data RGB 50 Dep...

Page 19: ... The SERVICE display will change to WRITE 5 Execute the writing with the 0 button The WRITE display will be changed back to SERVICE Use the same method for Items Number 00 2D Use 1 and 4 to select the adjustment item use 3 and 6 to adjust write with MUTING then execute the write with 0 Write executed with 0 Written with the MUTING WRITE WRITE GREEN 0C VSF 08 SERVICE 50 50 50 GREEN 0C VSF 08 GREEN ...

Page 20: ...ING TDA8375 16 PRD 00 01 00 50 00 60 00 OVER VOLTAGE INPUT TDA8375 17 COR 00 01 00 TV 00 VIDEO 00 TEXT 00 NOISE CORING PEAK TDA8375 18 PMX 00 3F 2B PICTURE MAX DATA TDA8375 19 PMI 00 3F 04 PICTURE MIN DATA TDA8375 1A SBR 00 7F 4B SUB BRIGHTNESS TDA8375 1B SHU 00 0F 07 SUB HUE TDA8375 1C SSH 00 03 01 TV 01 VIDEO 02 SUB SHARPNESS TDA8375 1D SC1 00 3F 3F 50 26 60 29 SUB COLOR LOWER TDA8375 1E SC2 00 ...

Page 21: ... MIX Mode 0 Interlace 1 Non interlace TEXT Mode 0 Non interlace 1 Interlace 29 ABL Bright ABL ON OFF ON 1 OFF 0 31 OP0 32 OP1 33 OP2 Input data are different according to models AV INPUT 00 NO MODEL 01 MONO CXA1315 10 11 STEREO TDA8424 TV System 00 Multi model 01 B G 10 D K I 11 B G D K NTSC SECAM Chin No 31 OP0 Input data are different according to models Item AV Input Remote Auto Arabic Reserved...

Page 22: ...elect item numbers and 31 OP0 32 OP1 and 33 OP2 and set the bit per model with command buttons 3 and 6 5 Press commander buttons 8 and Test Normal to return all user adjustments to the data that was set on shipment from the factory Cancel Service Mode 5 4 PICTURE DISTORTION ADJUSTMENT Item Number 00 08 00 HSF H SHIFT 01 HSZ H SIZE 02 PAP PIN AMP 03 CNP CORNER PIN 04 TLT TILT 05 VSL V SLOP 06 VAP V...

Page 23: ...2 01 BUTTON POWER 8 1 504 305 11 SPEAKER 5X12CM 9 4 043 388 01 SCREW STEP TAPPING 10 4 054 468 01 SHEET BLOTTING 11 4 365 808 01 SCREW 5 TAPPING 12 8 738 774 05 PICTURE TUBE A51JUH71X 13 8 451 280 33 DEFLECTION YOKE Y21PXA2 14 1 452 277 00 MAGNET BMC 15 A 1331 800 A C BOARD COMPLETE 16 4 046 600 11 SPACER DY 17 3 704 372 41 HOLDER HV CABLE 18 4 369 318 71 SPRING TENSION 19 1 409 942 21 COIL DEMAGN...

Page 24: ...F 10 50V C055 1 126 935 11 ELECT 470MF 20 16V C056 1 102 074 00 CERAMIC 0 001MF 10 50V C057 1 102 852 91 CERAMIC 47PF 5 50V C058 1 102 973 00 CERAMIC 100PF 5 50V C059 1 102 973 00 CERAMIC 100PF 5 50V C060 1 102 074 00 CERAMIC 0 001MF 10 50V C061 1 125 800 51 ELECT 2 2MF 20 63V C072 1 126 935 11 ELECT 470MF 20 16V C074 1 102 110 00 CERAMIC 220PF 10 50V C101 1 101 003 00 CERAMIC 0 0047MF 50V C102 1 ...

Page 25: ...830 00 CERAMIC 0 0047MF 99 500V C604 1 117 752 11 ELECT BLOCK 330MF 20 450V C605 1 161 830 00 CERAMIC 0 0047MF 99 500V C606 1 161 830 00 CERAMIC 0 0047MF 99 500V C607 1 161 830 00 CERAMIC 0 0047MF 99 500V C608 1 104 332 11 CERAMIC 470PF 10 2KV C609 1 124 347 00 ELECT 100MF 20 160V C610 1 126 943 11 ELECT 2200MF 20 25V C611 1 164 497 51 CERAMIC 470PF 10 400V C612 1 102 228 00 CERAMIC 470PF 10 500V ...

Page 26: ... DIODE MC932 D251 8 719 911 19 DIODE 1SS119 25 D252 8 719 016 42 DIODE MC932 D301 8 719 911 19 DIODE 1SS119 25 D305 8 719 911 19 DIODE 1SS119 25 D306 8 719 911 19 DIODE 1SS119 25 D307 8 719 911 19 DIODE 1SS119 25 D308 8 719 109 54 DIODE RD2 2ESB2 D310 8 719 911 19 DIODE 1SS119 25 D311 8 719 109 54 DIODE RD2 2ESB2 D312 8 719 110 08 DIODE RD8 2ESB2 D315 8 719 121 24 DIODE RD9 1ESL D351 8 719 908 03 ...

Page 27: ...8 729 119 76 TRANSISTOR 2SA1175 HFE Q408 8 729 119 78 TRANSISTOR 2SC2785 HFE Q409 8 729 119 76 TRANSISTOR 2SA1175 HFE Q414 8 729 119 78 TRANSISTOR 2SC2785 HFE Q561 8 729 200 17 TRANSISTOR 2SA1091 R Q801 8 729 140 50 TRANSISTOR 2SC3209LK Q802 8 729 821 87 TRANSISTOR 2SD1878 CA Q821 8 729 209 15 TRANSISTOR 2SD2012 Q902 8 729 030 02 TRANSISTOR DTC144ESA Q903 8 729 030 02 TRANSISTOR DTC144ESA Q1201 8 ...

Page 28: ...RBON 27K 5 1 4W R326 1 249 424 11 CARBON 3 9K 5 1 4W R330 1 220 955 31 METAL 560 5 1 2W R331 1 247 897 11 CARBON 560K 5 1 4W R332 1 220 951 31 METAL 220 5 1 2W R335 1 220 969 31 METAL 10K 5 1 2W R336 1 220 961 31 METAL 2 2K 5 1 2W R339 1 215 408 00 METAL 300 1 1 4W R340 1 220 952 31 METAL 330 5 1 2W R341 1 220 958 31 METAL 1K 5 1 2W R344 1 259 880 11 CARBON 2 2M 5 1 4W R351 1 249 393 11 CARBON 10 ...

Page 29: ...220 958 31 METAL 1K 5 1 2W R907 1 220 960 31 METAL 1 8K 5 1 2W R908 1 220 960 31 METAL 1 8K 5 1 2W R909 1 220 963 31 METAL 3 3K 5 1 2W R910 1 220 963 31 METAL 3 3K 5 1 2W R911 1 220 968 31 METAL 8 2K 5 1 2W R913 1 220 954 31 METAL 470 5 1 2W R914 1 220 954 31 METAL 470 5 1 2W R915 1 220 968 31 METAL 8 2K 5 1 2W R1201 1 220 947 31 METAL 82 5 1 2W R1202 1 220 958 31 METAL 1K 5 1 2W R1203 1 220 975 3...

Page 30: ...NNECTOR CN1211 1 778 603 11 PIN CONNECTOR PC BOARD 12P CN1212 1 778 603 11 PIN CONNECTOR PC BOARD 12P DIODE D1209 8 719 121 24 DIODE RD9 1ESL IC IC201 8 759 090 21 IC TDA8424 IC202 8 759 708 12 IC NJM78L12A IC1211 8 759 711 23 IC NJM2234L IC1212 8 759 711 23 IC NJM2234L TRANSISTOR Q1205 8 729 119 76 TRANSISTOR 2SA1175 HFE RESISTOR R203 1 220 951 31 METAL 220 5 1 2W R204 1 220 951 31 METAL 220 5 1 ...

Page 31: ...9 00 METAL 680K 1 1 4W R722 1 249 923 11 CARBON 1K 5 1 4W F R723 1 215 479 00 METAL 270K 1 1 4W R724 1 249 923 11 CARBON 1K 5 1 4W F R725 1 220 959 31 METAL 1 5K 5 1 2W R726 1 220 959 31 METAL 1 5K 5 1 2W R727 1 220 959 31 METAL 1 5K 5 1 2W R728 1 220 949 31 METAL 150 5 1 2W R729 1 220 950 31 METAL 180 5 1 2W R730 1 220 950 31 METAL 180 5 1 2W R731 1 220 948 31 METAL 100 5 1 2W R732 1 220 948 31 M...