Sony KV-G14K3, Service Manual

Page 1: ...EL COMMANDER DEST CHASSIS NO KV G14K3 RM 870 Vietnam SCC K26L A KV G21K3 RM 870 Vietnam SCC K26M A SERVICE MANUAL MODEL COMMANDER DEST CHASSIS NO TRINITRON COLOR TV RM 870 KV G14K3 KV G21K3 CHASSIS BG 1S D ...

Page 2: ...mption W Indicated on the rear of the TV Television system B G D K 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 D K VHF C1 to C2 R1 to R 12 UHF C13 to C57 R21 to R 60 CATV S01 to S03 S1 to S41 Z1 to Z39 Audio output speaker 3W Inputs Antenna 75 ohms VIDEO IN jacks phono jacks Video 1 Vp p 75 ohms Audio 500 mVrms high im...

Page 3: ...tments 17 4 SELF DIAGNOSIS FUNCTION 18 5 CIRCUIT ADJUSTMENTS 5 1 Adjustments with Commander 19 5 2 Adjustment Method 20 5 3 A Board Adjustment after IC003 Memory Replacement 23 5 4 Picture Distortion Adjustment 23 6 DIAGRAMS 6 1 Block Diagrams 25 6 2 Circuit Boards Location 27 6 3 Schematic Diagrams and Printed Wiring Boards 1 Schematic Diagram of A Board 31 2 Schematic Diagrams of A11 and C Board...

Page 4: ...RAL The operating instructions 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 ...

Page 5: ... AUDIO to video and audio outputs Signal flow to antenna output VCR to antenna socket Getting Started 5 Connecting audio video equipment using MONITOR OUT jacks 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 socke...

Page 6: ...dby mode press POWER on the remote commander 2 Press AUTO PROGR To start presetting channels automatically from the specified program position 1 Press MANUAL PROGR 2 Press PROGR to select the program position 3 Press AUTO PROGR POWER MANUAL PROGR COLOR SYSTEM R SELECT TV SYSTEM AUTO PROGR POWER 1 2 AUTO PROGR 1 2 3 1 Getting Started 7 Presetting channels automatically using the remote commander 1 ...

Page 7: ...Up Timer the TV automatically turns into standby mode If you want to continue watching the TV press any button or control on the remote commander or the TV 1 AUTO B G DYNAMIC Displaying on screen information Press DISP REVEAL The program position local system and TV settings are displayed on the screen After 10 minutes WAKE UP TIMER 10M WAKE UP TIMER OFF WAKE UP TIMER 12H00M No wake up timer After...

Page 8: ...e remote commander is not used for your TV Selecting the picture mode Press PIC MODE until the mode you want appears Each time you press PIC MODE the screen changes as follows Note If you change the picture mode after the following adjustments the adjustment changes in accordance with the picture mode 0 SOUND MODE SELECT PIC MODE or High contrast picture DYNAMIC STANDARD SOFT Normal picture Soft p...

Page 9: ... the power cord connection Check the standby mode Good picture No sound Press VOLUME Press MUTING TV cabinet creaks Even if the picture or the sound is normal changes in the room temperature sometimes make the TV cabinet expand or contract making a noise This does not indicate a malfunction Note on the remote commander The supplied remote commander is used on several models of the TV If you do not...

Page 10: ...1K3 1 Two screws BVTP 4 16 2 4 REPLACEMENT OF PARTS For replacement of the Control Button Multi Button Light Guide and Power Button cut the welded portions from them exchange with the new parts and fix them with screws BVTP respectively 2 4 1 REPLACEMENT OF CONTROL BUTTON MULTI BUTTON 1 For KV G14K3 A board Cut Control button Lever Lever A board Control button Two screws BVTP 3 12 ...

Page 11: ...il 1 Tension spring Picture tube 3 3 DGC holder DGC holder 1 Demagnetization coil 2 Tension spring Picture tube 2 4 2 REPLACEMENT OF LIGHT GUIDE POWER BUTTON 1 For KV G14K3 Power button Two screws BVTP 3 12 Light guide Power button Cut Cut 2 For KV G21K3 Cut Light guide Power button Two screws BVTP 3 10 Two screws BVTP 3 10 ...

Page 12: ...n the direction indicated by the arrow a c Anode button 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 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 so as not to damage the inside of ano...

Page 13: ... 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 screen is green See Figure 3 1 5 Switch the raster signal to blue then to red and verify the condition 6 When the position of the deflection yoke has been decided fa...

Page 14: ... green and blue points are on top of each other at the center of the screen 3 If the V STAT Magnet cannot bring the red green and blue points together at the center of the screen adjust the horizontal convergence with the BMC Magnet and the V STAT magnet in the manner given below In this case the BMC Magnet and the V STAT magnet influence each other 4 If the V STAT magnet is moved in the direction...

Page 15: ...in the horizontal direction 2 Dynamic Convergence Adjustment Preparations 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 Move the deflection yoke as shown in the figure below and optimize the convergence 4 Tighten the deflection yoke screws 5 Install the ...

Page 16: ...en plug in AC outlet again 2 Turn the power switch ON and set to Service Mode 3 Call the adjusted items again to confirm they were adjusted 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 3 FOCUS ADJUSTMENT Adjust FOCUS using RV703 on the C Board KV G14K3 only or FOCUS control on the flyback transformer KV G21K3 only for the b...

Page 17: ...the oscillo scope 4 Adjust G2 RV701 volume to the value below 2 WHITE BALANCE ADJUSTMENTS 1 Set to Service Mode 2 Input an entire white signal 3 Set the PICTURE to maximum 4 Select RDR 09 with 1 and 4 and then set the level to 25 with 3 and 6 5 Select GDR 0A and BDR 0B with 1 and 4 and adjust the level with 3 and 6 for the best white balance 6 Write into the memory by pressing MUTING then 0 0 V 16...

Page 18: ...f 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 NONVOLA TILE...

Page 19: ...riting 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 1 4 Select the adjustment item 3 6 Raise lower the data MUTING Writes 0 Executes the writing MUTING TEXT VIDEO HOLD TV TEXT CLR SELECT PIC MODE A B ENLARGE WAKE UP INDEX ...

Page 20: ...4 Write with the MUTING button 5 Execute the writing with the 0 button The WRITE display will change 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 WRITE GREEN 0C VSF 08 SERVICE 50 50 50 GREEN 0C VSF 08 Adjusted with 3 and 6 buttons Written with MUTING Write executed wi...

Page 21: ...V GUARD TDA8375 15 SBL 00 01 00 50 60 SERVICE BLANKING TDA8375 16 PRD 00 01 00 50 60 OVER VOLTAGE INPUT TDA8375 17 COR 00 01 00 TV VIDEO TEXT NOISE CORING PEAK TDA8375 18 PMX 00 3F 2D 2B PICTURE MAX DATA TDA8375 19 PMI 00 3F 00 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 1F 50 2...

Page 22: ... a device replacement adjustment by rewriting the data value is necessary for some items 50 50 Hz data 60 60 Hz data Standard data listed on the adjustment item table are reference values therefore it is different for every model ITEM INFORMATION 10 DL TV MIX Mode 0 Interlace 1 interlace TEXT Mode 0 interlace 1 Interlace 42 ABL Bright ABL ON OFF ON 1 OFF 0 48 OP0 49 OP1 Input data are different ac...

Page 23: ... 3 Call each item number and check if the respective screen shows the normal picture In case some items are not well adjusted give them fine adjustment Write the data for each item number MUTING 0 4 Select item numbers 2C OP0 and 2D OP1 and respectively set the bit per model with command buttons 3 and 6 5 Press commander buttons 8 and 0 Test Normal to return to the data that was set on the shipmen...

Page 24: ... 24 KV G14K3 G21K3 RM 870 MEMO ...

Page 25: ... COMPLETE 27 8 598 323 00 TUNER VSS BT AG401 28 1 453 194 11 TRANSFORMER ASSY FLYBACK NX 1723 M3A 29 A 1298 477 A A BOARD COMPLETE 30 4 389 778 11 HOLDER AC CORD 31 1 782 173 11 CORD POWER 32 1 452 032 00 MAGNET DISC 33 X 4309 608 0 PERMALLOY ASSY CONVERGENCE 4 049 275 81 DOOR RAW CONTROL 7 2 CHASSIS KV G21K3 r BVTP3 10 7 685 647 79 p BVTP4 16 7 685 663 79 4 BVTP3 16 7 685 650 79 REF NO PART NO DE...

Page 26: ...074 00 CERAMIC 0 001MF 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 1 126 961 11 ELECT 2 2MF 20 50V C072 1 126 935 11 ELECT 470MF 20 16V C074 1 102 110 00 CERAMIC 220PF 10 50V C101 1 101 003 00 CERAMIC...

Page 27: ...0MF 20 25V C616 1 102 228 00 CERAMIC 470PF 10 500V C618 1 102 114 00 CERAMIC 470PF 10 50V C621 1 104 705 51 FILM 0 1MF 20 250V C622 1 106 383 00 MYLAR 0 047MF 10 200V C623 1 126 934 11 ELECT 220MF 20 16V C624 1 126 935 11 ELECT 470MF 20 16V C625 1 102 074 00 CERAMIC 0 001MF 10 50V C627 1 162 116 00 CERAMIC 680PF 10 2KV C628 1 102 824 00 CERAMIC 470PF 5 50V C630 1 164 497 51 CERAMIC 470PF 10 400V C...

Page 28: ...9 510 26 DIODE D1NL20 TA D801 8 719 945 80 DIODE ERC06 15S D851 8 719 302 43 DIODE EL1Z D852 8 719 028 72 DIODE RGP02 17EL 6433 D853 8 719 302 43 DIODE EL1Z D855 8 719 302 43 DIODE EL1Z D857 8 719 908 03 DIODE GP08D D858 8 719 908 03 DIODE GP08D D860 8 719 911 19 DIODE 1SS119 25 D901 8 719 054 60 DIODE LNK0220022G D1201 8 719 121 24 DIODE RD9 1ESL D1202 8 719 121 24 DIODE RD9 1ESL D1207 8 719 121 ...

Page 29: ... 1 247 807 31 CARBON 100 5 1 4W R029 1 249 425 11 CARBON 4 7K 5 1 4W R031 1 249 417 11 CARBON 1K 5 1 4W R033 1 249 417 11 CARBON 1K 5 1 4W R035 1 249 417 11 CARBON 1K 5 1 4W R036 1 249 417 11 CARBON 1K 5 1 4W R038 1 247 815 91 CARBON 220 5 1 4W R040 1 247 815 91 CARBON 220 5 1 4W R041 1 247 807 31 CARBON 100 5 1 4W R042 1 249 412 11 CARBON 390 5 1 4W R045 1 249 421 11 CARBON 2 2K 5 1 4W R047 1 247...

Page 30: ...IBLE 0 1 10 1 2W F R613 1 219 134 11 FUSIBLE 0 1 10 1 4W R614 1 215 877 11 METAL OXIDE 22K 5 1W F R616 1 247 289 11 CARBON 8 2M 5 1W R617 1 215 924 00 METAL OXIDE 15K 5 3W F R619 1 219 134 11 FUSIBLE 0 1 10 1 4W R620 1 202 962 11 CEMENTED 3 3 5 10W R622 1 207 615 00 METAL 0 33 10 2W R623 1 247 807 31 CARBON 100 5 1 4W R624 1 216 446 00 METAL OXIDE 18 5 2W F R625 1 249 424 11 CARBON 3 9K 5 1 4W R62...

Page 31: ...7 195 11 TRANSFORMER HORIZONTAL DRIVE T851 1 453 194 11 TRANSFORMERASSY FLYBACK NX 1723 M3A THERMISTOR THP601 1 806 165 12 THERMISTOR POSITIVE TUNER TU101 8 598 323 00 TUNER VSS BT AG401 CRYSTAL X101 1 577 082 11 VIBRATOR CERAMIC X300 1 411 752 11 COIL X358 1 567 505 11 OSCILLATOR CRYSTAL X443 1 567 504 11 OSCILLATOR CRYSTAL A 1298 478 A A BOARD COMPLETE KV G21K3 1 580 798 11 CONNECTOR PIN DY 6P 4...

Page 32: ...5PF 50V C328 1 136 153 00 FILM 0 01MF 5 50V C329 1 130 478 00 MYLAR 0 0039MF 5 50V C330 1 136 165 00 FILM 0 1MF 5 50V C331 1 126 964 51 ELECT 10MF 20 50V C332 1 136 165 00 FILM 0 1MF 5 50V C333 1 136 165 00 FILM 0 1MF 5 50V C334 1 102 123 00 CERAMIC 0 0033MF 10 50V C335 1 102 973 00 CERAMIC 100PF 5 50V C336 1 126 964 51 ELECT 10MF 20 50V C337 1 126 933 11 ELECT 100MF 20 16V C339 1 101 361 00 CERAM...

Page 33: ... 933 11 ELECT 100MF 20 16V C1218 1 102 976 00 CERAMIC 180PF 5 50V C1221 1 136 173 00 FILM 0 47MF 5 50V C1226 1 126 934 11 ELECT 220MF 20 16V C1228 1 126 960 11 ELECT 1MF 20 50V C1229 1 136 173 00 FILM 0 47MF 5 50V C1230 1 136 165 00 FILM 0 1MF 5 50V C1513 1 126 968 11 ELECT 100MF 20 50V FILTER CF55 1 567 099 00 FILTER CERAMIC CONNECTOR CN101 1 560 124 00 PLUG CONNECTOR 2 5MM 4P CN103 1 564 509 11 ...

Page 34: ...5 31 INDUCTOR 15UH L101 1 410 470 11 INDUCTOR 10UH L301 1 408 598 31 INDUCTOR 3 9UH L401 1 410 498 11 INDUCTOR 1 2UH L402 1 410 510 11 INDUCTOR 12UH L406 1 410 507 11 INDUCTOR 6 8UH L410 1 410 501 11 INDUCTOR 2 2UH L802 1 412 527 11 INDUCTOR 15UH L804 1 459 075 00 INDUCTOR 0UH L805 1 459 769 13 COIL HORIZONTAL LINEARITY L807 1 459 390 00 INDUCTOR 0UH L808 1 412 553 11 INDUCTOR 3 3MMH L821 1 459 11...

Page 35: ...RBON 560 5 1 4W R243 1 249 429 11 CARBON 10K 5 1 4W R244 1 249 429 11 CARBON 10K 5 1 4W R245 1 249 426 11 CARBON 5 6K 5 1 4W R248 1 249 421 11 CARBON 2 2K 5 1 4W R250 1 249 421 11 CARBON 2 2K 5 1 4W R252 1 249 411 11 CARBON 330 5 1 4W R253 1 249 429 11 CARBON 10K 5 1 4W R254 1 249 389 11 CARBON 4 7 5 1 4W R258 1 216 396 11 METAL OXIDE 3 9 5 3W F R265 1 249 425 11 CARBON 4 7K 5 1 4W R266 1 249 437 ...

Page 36: ...C POWER S801 1 572 707 11 SWITCH LEVER S901 1 570 577 41 SWITCH PUSH S902 1 570 577 41 SWITCH PUSH S903 1 570 577 41 SWITCH PUSH R561 1 249 421 11 CARBON 2 2K 5 1 4W R562 1 249 419 11 CARBON 1 5K 5 1 4W F R563 1 260 126 11 CARBON 180K 5 1 2W R564 1 249 438 11 CARBON 56K 5 1 4W R565 1 249 438 11 CARBON 56K 5 1 4W R566 1 249 425 11 CARBON 4 7K 5 1 4W R569 1 260 354 71 CARBON 150K 5 1 2W R571 1 247 8...

Page 37: ... PIN CONNECTOR PC BOARD 12P TRIMMER CT65 1 409 327 00 TRAP CERAMIC 6 5MHZ IC IC401 8 759 800 65 IC LA7910 COIL L407 1 410 511 11 INDUCTOR 15UH L408 1 410 500 11 INDUCTOR 1 8UH TRANSISTOR Q410 8 729 119 76 TRANSISTOR 2SA1175 HFE Q411 8 729 119 78 TRANSISTOR 2SC2785 HFE Q413 8 729 029 92 TRANSISTOR DTC143ESA RESISTOR R427 1 249 411 11 CARBON 330 5 1 4W R428 1 247 863 91 CARBON 22K 5 1 4W R430 1 249 ...

Page 38: ...ES ADJ METAL GLAZE 2 2M A 1331 591 A C BOARD COMPLETE KV G21K3 4 382 854 11 SCREW M3X10 P SW CAPACITOR C701 1 162 114 00 CERAMIC 0 0047MF 2KV C702 1 102 074 00 CERAMIC 0 001MF 10 50V C703 1 107 651 11 ELECT 4 7MF 20 250V C704 1 130 202 00 FILM 0 022MF 5 400V C708 1 102 114 00 CERAMIC 470PF 10 50V C709 1 102 114 00 CERAMIC 470PF 10 50V C710 1 102 114 00 CERAMIC 470PF 10 50V C712 1 102 115 00 CERAMI...

Page 39: ...1 230 641 11 RES ADJ METAL GLAZE 2 2M MISCELLANEOUS 1 426 145 13 COIL DEGAUSSING KV G14K3 1 416 325 11 COIL DEMAGNETIC KV G21K3 1 417 151 21 MATCHING TRANSFORMER ANTENNA 1 452 032 00 MAGNET DISC 1 452 277 00 MAGNET BMC 1 501 730 41 ANTENNA TELESCOPIC 1 504 255 11 SPEAKER 5X9CM KV G14K3 1 504 305 11 SPEAKER 5X12CM KV G21K3 1 782 173 11 CORD POWER 1 900 700 05 LEAD ASSY FOCUS KV G21K3 8 451 418 21 D...