Sony TRINITRON KV-25FS12 Service Manual
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Sony TRINITRON KV-25FS12 Service Manual

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SERVICE MANUAL

MODEL NAME
KV-25FS12
KV-25FS12C
9-965-902-01
REMOTE COMMANDER
DESTINATION
RM-Y173
RM-Y173
KV-25FS12
TRINITRON
BA-5
CHASSIS NO.
E
SCC-S38UA
E
SCC-S38VA
®
COLOR TELEVISION
CHASSIS
RM-Y173

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Summary of Contents for Sony TRINITRON KV-25FS12

  • Page 1: Service Manual

    BA-5 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO. KV-25FS12 RM-Y173 SCC-S38UA KV-25FS12C RM-Y173 SCC-S38VA RM-Y173 KV-25FS12 ® TRINITRON COLOR TELEVISION 9-965-902-01...

  • Page 2: Table Of Contents

    KV-25FS12 / 25FS12C TABLE OF CONTENTS SECTION TITLE PAGE Specifi cations............................3 Warnings and Cautions........................4 Safety Check-out ..........................5 Self-Diagnostic Function........................6 1. Disassembly 1-1. Rear Cover Removal........................8 1-2. Chassis Assembly Removal......................8 1-3. Service Position ..........................8 1-4. Picture Tube Removal ........................9 Anode Cap Removal Procedure....................9 2.

  • Page 3: Specifications

    KV-25FS12 / 25FS12C SPECIFICATIONS KV-25FS12C KV-25FS12 Power requirements 120V, 60Hz 220V, 50/60Hz Number of Inputs/Outputs Video S Video Audio Audio Out Headphone Out Speaker output (W) 7.5 x 2 Power Consumption (W) In use (Max) 165W In Standby Dimensions(W/H/D) 614.8 x 564.1 x 499.7 x 22 x 19 Mass...

  • Page 4: Warnings And Cautions

    Ne les remplacer que par des composants sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifi...

  • Page 5: Safety Check-Out

    KV-25FS12 / 25FS12C SAFETY CHECK-OUT After correcting the original service problem, perform the following Leakage Test safety checks before releasing the set to the customer: The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to 1.

  • Page 6: Self-Diagnostic Function

    KV-25FS12 / 25FS12C SELF-DIAGNOSTIC FUNCTION The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the instruction manual for the user’s knowledge and reference.
  • Page 7 KV-25FS12 / 25FS12C Self-Diagnostic Screen Display For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confi rmed, it is possible to bring up past occurrences of failure on the screen for confi rmation. To Bring Up Screen Test In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below: Display...

  • Page 8: Set-Up Adjustments

    KV-25FS12 / 25FS12C SECTION 2: SET-UP ADJUSTMENTS The following adjustments should be made when a complete Perform the adjustments in order as follows: realignment is required or a new picture tube is installed. Beam Landing Convergence These adjustments should be performed with rated power supply Focus voltage unless otherwise noted.
  • Page 9 KV-25FS12 / 25FS12C 2-2. CONVERGENGE HORIZONTAL STATIC CONVERGENCE Before starting convergence adjustments: If the blue dot does not converge with the red and green dots, peform the following: 1 Perform FOCUS, VLIN and VSIZE adjustments. 1. Move BMC magnet (a) to correct insuffi cient H.Static convergence. 2.

  • Page 10: Focus

    KV-25FS12 / 25FS12C DYNAMIC CONVERGENCE ADJUSTMENT 4. Adjust XCV core to balance X axis. 5. Adjust YCH VR to balance Y axis. Before performing this adjustment, perform Horizontal and Vertical Static 6. Adjust vertical red and blue convergence with V.TILT (TLV VR.) Convergence Adjustment.

  • Page 11: Method Of Setting The Service Adjustment Mode

    KV-25FS12 / 25FS12C 2-5. METHOD OF SETTING THE SERVICE ADJUSTMENT MODE SERVICE MODE PROCEDURE 1. Standby mode (power off). 2. Press Display Channel 5 Sound Volume + Power on the Remote Commander (press each button within a second). SERVICE ADJUSTMENT MODE ON 1.

  • Page 12: Safety Related Adjustments

    KV-25FS12 / 25FS12C SECTION 3: SAFETY RELATED ADJUSTMENTS HOLD-DOWN READJUSTMENT 3-1. X R564 CONFIRMATION METHOD (HOLD-DOWN CONFIRMATION) AND If the setting indicated in Step 2 of Hold-Down Operation Confi rmation READJUSTMENTS cannot be met, readjustment should be performed by altering the resistance value of R564 component marked with X.
  • Page 13 KV-25FS12 / 25FS12C POWER DIGITAL SUPPLY MULTIMETER 1SS119 X R564 C546 R438 R438 1 1 1 1 9 9 9 9 R438 R438 R449 R449 R449 R449 R454 R454 R454 R454 JR503 JR503 JR503 JR503 C448 C448 C448 C448 R450 R450 R450 R450...

  • Page 14: Circuit Adjustments

    KV-25FS12 / 25FS12C SECTION 4: CIRCUIT ADJUSTMENTS ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER Use the Remote Commander (RM-Y173) to perform the circuit adjustments in this section. Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator 4-1.

  • Page 15: Adjustment Items

    KV-25FS12 / 25FS12C ADJUSTMENT ITEMS (1 OF 2) AVERAGE Reg # ITEM FUNCTION RANGE DATA NTSC VIDEO DATA HSIZ Horizontal Size Adjustment 0-63 HPOS Horizontal Position Adjustment 0-63 VBOW Vertical Line Bowing Adj. 0-15 VANG Vertical line Bowing Slant Adj. 0-15 TRAP Horizontal Trapezoid Adj.
  • Page 16 KV-25FS12 / 25FS12C ADJUSTMENT ITEMS (2 OF 2) AVERAGE Reg # ITEM FUNCTION RANGE DATA NTSC VIDEO DATA SHPF SHARPNESS Circuit Fo Palette mode controls this register PREL Pre-Shoot / Over-Shoot Y-DC DC Transmission Ratio Switching Palette mode controls this register GAMM Gamma Correction Amnt Palette mode controls this register ABLM ABL Mode Switching...

  • Page 17: Mb Board Adjustments

    KV-25FS12 / 25FS12C 4-4. MB BOARD ADJUSTMENTS DISPLAY POSITION ADJUSTMENT (DISP) 1. Input a color-bar signal. H. FREQUENCY (FREE RUN) CHECK 2. Set to Service Adjustment Mode. 1. Input a TV mode (RF) with no signal. 3. Select DISP with 1 and 4 . 2.
  • Page 18 KV-25FS12 / 25FS12C V. CENTER ADJUSTMENT (VPOS) V LINEARITY (VLIN) Perform this adjustment after performing H. Frequency (Free Run) Check. 1. Input a crosshatch signal. 2. Activate the Service Adjustment Mode. V CORRECTION (SCOR) 3. Select the VPOS item with 1 and 4 . 4.

  • Page 19: Diagrams

    KV-25FS12 / 25FS12C SECTION 5: DIAGRAMS 5-1. CIRCUIT BOARDS LOCATION • When replacing the parts listed in the table below, it is important to perform the related adjustments. Part Replaced ( ) Adjustment ( ) HV HOLD-DOWN DY, T505, CRT, IC501 C507, R564 C520, C505, C509, C515, T504, CB Board...
  • Page 20 5-3. BLOCK DIAGRAM (1 OF 2) KV-25FS12 / 25FS12C CN460 CN450 MON-L MON-L MUTE MON-R MON-R Q430 Q431 VAR/FIX-R VAR/FIX-R (AUDIO PROCESSOR) (POWER SUPPLY) VAR/FIX-L VAR/FIX-L (DEFLECTION) OUT-L OUT-L J205 (TUNER/IF) OUT-R OUT-R REAR AUDIO (AUDIO) AUDIO (MTS) OUTPUT YUV-L YUV-L LINE B BUFFER...
  • Page 21 BLOCK DIAGRAM (2 OF 2) KV-25FS12 / 25FS12C CN1002 FOR JIG CN1000 STBY +5V VIDEO SW HSYNCH SW DIG COMB IC1304 IC1002 FILTER IC1302 VIDEO1 IC1305 (TUNING CONTROL) (Y/C/J) RESET MEMORY IC1003 4 10 BUFFER Q1001 BUFFER Q1010 HSYNCH Q1009 CVBS2 O-SEL1 O-SEL0...
  • Page 22 KV-25FS12 / 25FS12C A BOARD SCHEMATIC DIAGRAM CN460 TO K BOARD CN450 TU101 STEREO IC402 TDA8580Q/N1 AUDIO AMP — BTF- WA412 TUNER TP100 C215 RF-AGC R421 AUDIO-R CHIP 4.7k AUDIO-R C219 C214 R422 AUDIO-L R107 C105 TP102 1 16V AUDIO-L AUDIO-L DET OUT AUDIO-L...
  • Page 23 KV-25FS12 / 25FS12C (*) A BOARD VARIANT MODEL LIST REF. NO. LOC. KV-25FS12 KV-25FS12C C607 0.47µF 125V C612 680µF 250V 560µF 400V C615 0.022µF 400V C616 220PF 1KV D609 RU-1P F601 6.3A/125V 6.3A/250V IC601 E-10 STR-F6426 STR-F6456 R601 4.7M 1/2W R615 8.2M 1W R627...
  • Page 24 KV-25FS12 / 25FS12C A BOARD IC VOLTAGE LIST IC402 IC501 IC601 IC604 TU101 volt volt volt volt volt -31.8 13.3 -32.7 30.7 14.1 53.2 -23.8 IC2001 -32.7 volt 10.1 IC602 volt 14.0 135.9 IC502 123.4 All voltages are in V volt IC603 14.0...
  • Page 25 KV-25FS12 / 25FS12C [POWER SUPPLY, DEFLECTION, TUNER/ IF, AUDIO, MTS] A BOARD LOCATOR LIST DIODE D618 D204 B-10 D619 D205 A-11 D620 — D206 A-11 D622 D208 B-11 D623 D209 B-11 D624 D210 B-11 D625 D212 B-11 D626 D213 D627 —...

  • Page 26: Cb Board Schematic Diagram

    KV-25FS12 / 25FS12C CB BOARD SCHEMATIC DIAGRAM 27V: TIGER R717 — R718 FOCUS G4 HV KR G1 TO A BOARD J701 R716 T505 100k 1/2W G1-1 C707 CN702 0.0047 CN704 :PIN-J RV701 V STAT CONTROL 110M — G1-3 G1-2 R715 560k C704 D704...
  • Page 27 KV-25FS12 / 25FS12C [RGB DRIVE, CRT DRIVE] — — — — CB BOARD WAVEFORMS 135.9V p-p (H) 140.6V p-p (H) 132.8V p-p (H) — 29 —...

  • Page 28: K Board Schematic Diagram

    KV-25FS12 / 25FS12C K BOARD SCHEMATIC DIAGRAM CN402 TO MB BOARD CN1000 C418 C419 C409 C410 1 16V :CHIP 0.0015 B:CHIP 0.033 :CHIP :CHIP R470 R403 C417 C411 C490 C408 1/10W R455 0.0033 0.22 R468 R456 — C416 B:CHIP :CHIP R404 JW405 AUDIO-R...
  • Page 29 KV-25FS12 / 25FS12C MB BOARD SCHEMATIC DIAGRAM CN1003 CN1004 TO A BOARD TO A BOARD CN2009 CN2002 STBY-7.5V STBY-7.5V — C1353 R1317 VIDEO R1314 CHIP CHIP R1082 4.7k CHIP Q1003 R1043 2SD601A 8.2k VIDEO CHIP BUFFER — R1418 R1034 R1042 R1374 1k CHIP CHIP...
  • Page 30 KV-25FS12 / 25FS12C MB BOARD IC VOLTAGE LIST IC1001 volt IC1301 IC1304 volt volt IC1302 volt IC1002 volt IC1305 volt IC1003 volt -0.2 All voltages are in V MB BOARD WAVEFORMS 2.7 Vp-p (8 MHz) 4.7 Vp-p (H) 1.0 Vp-p (H) 0.7 Vp-p (H) 0.9 Vp-p (H) 4.0 Vp-p (V)
  • Page 31 MB BOARD IC BLOCK DIAGRAM KV-25FS12 / 25FS12C IC1301: CXA2131CS EYUV CLAMP <FSC SW> ABL FIL YUV SW <YSEL> YUVOUT ABL IN <YUVOUT> DEMOD. C VCO <HUE> ABL/PEAK LIM DPIC CLAMP <ABL MODE> IK IN <DPIC> COLOR AMP RGB 1/2 <<IKR>>...
  • Page 32 KV-25FS12 / 25FS12C [TUNING CONTROL, Y/C/J] — — — — MB BOARD LOCATOR LIST DIODE TRANSISTOR Q1317 D1001 Q1001 Q1325 D1005 Q1002 Q1326 D1010 Q1003 Q1327 D1011 Q1009 Q1328 D1012 Q1010 Q1329 D1013 Q1011 Q1330 D1014 Q1301 Q1331 D1301 Q1302 Q1332 D1310 Q1306...
  • Page 33 KV-25FS12 / 25FS12C VB BOARD SCHEMATIC DIAGRAM CN901 TO A BOARD C914 CN506 R923 0.047 VM OUT — Q906 6.1V R920 2SC3311 C912 C913 R922 VM OUT 0.001 R921 :FPRD R919 5.7V CN902 R918 5.7V R917 5.4V Q905 L901 JW(5mm) 2SA1309A-QRSTA Q.P.- R916...

  • Page 34: Semiconductors

    KV-25FS12 / 25FS12C 5-4. SEMICONDUCTORS 2SB709A-QRS-TX 2SC3209LK-TP 2SA1309A-QRSTA 2SA1837 2SA1091O-TPE2 2SD601A-QRS-TX 2SC3311A-QRSTA 2SD2144S-TP-UVW LETTER SIDE 1SS133T-77 D1NS0R-TA 2SK2663 2SC4793 2SD2578-YB 1SS83TD D1NLSOU-TA MTZJ-T-77-12C MTZJ-T-77-33B ELIZ-V1 ERA22-08TP3 MTZJ-T-77-39 1EQS04-NTA1B GP08DPKG23 RU4AM-T3 MTZJ-T-77-20B RGP10GPKG23 CATHODE CATHODE ANODE ANODE RD9.1EW-T1 MA111-TX D2SB60A-F04 DAP202K-T-146 D4SB60L-F UDZ-TE-17.5.1B UDZ-TE-17.91B...

  • Page 35: Exploded Views

    1-419-510-11 COIL, DEGAUSSING (KV-25FS12C ONLY) 3-703-574-00 RETAINER, DOOR A-1304-224-A MB (VAR) MOUNTED PC BOARD A-1342-547-A VB (VAR) MOUNTED PC BOARD 4-046-160-01 EMBLEM (NO.9), SONY 4-073-844-01 GUIDE, LED ! 20 1-757-834-11 CORD, AC POWER (DOUBLE GROMMENT) 4-073-843-06 BUTTON, MULTI (KV-25FS12 ONLY)

  • Page 36: Electrical Parts List

    KV-25FS12 / 25FS12C SECTION 7: ELECTRICAL PARTS LIST The components in this manual identifi ed by the following NOTE: The components identifi ed by shading RESISTORS symbol: X indicate parts that have been carefully factory- and ! mark are critical for safety. Replace only •...
  • Page 37 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 38 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 39 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 40 KV-25FS12 / 25FS12C A component identifi ed by this X symbol indicates that it NOTE: The components identifi ed by shading has been carefully factory-selected to satisfy regulations and ! mark are critical for safety. Replace only regarding X-ray radiation. Should replacement be required, with part number specifi...
  • Page 41 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 42 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 43 KV-25FS12 / 25FS12C REF.NO. PART NO. DESCRIPTION VALUES REF.NO. PART NO. DESCRIPTION VALUES JR428 1-216-295-11 SHORT C1013 1-163-009-11 CERAMIC CHIP 0.001µF 10% JR429 1-216-295-11 SHORT C1014 1-130-495-00 MYLAR 0.1µF JR440 1-216-295-11 SHORT C1015 1-163-231-11 CERAMIC CHIP 15pF JR460 1-216-295-11 SHORT C1016 1-163-231-11 CERAMIC CHIP...
  • Page 44 KV-25FS12 / 25FS12C NOTE: Les composants identifi es par un trame et une NOTE: The components identifi ed by shading marque ! sont critiques pour la securite. Ne les and ! mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e. with part number specifi...
  • Page 45 KV-25FS12 / 25FS12C REF.NO. PART NO. DESCRIPTION VALUES REF.NO. PART NO. DESCRIPTION VALUES R1019 1-216-045-00 RES-CHIP 1/10W COIL R1020 1-216-101-00 RES-CHIP 150K 1/10W L1001 1-412-032-11 INDUCTOR 100µH R1021 1-216-121-11 RES-CHIP 1/10W L1003 1-412-032-11 INDUCTOR 100µH R1022 1-216-073-00 RES-CHIP 1/10W L1004 1-408-963-11 INDUCTOR 2.7µH...
  • Page 46 KV-25FS12 / 25FS12C REF.NO. PART NO. DESCRIPTION VALUES REF.NO. PART NO. DESCRIPTION VALUES R1071 1-249-429-11 CARBON 1/4W R1328 1-216-067-00 RES-CHIP 5.6K 1/10W R1072 1-216-065-91 RES-CHIP 4.7K 1/10W R1329 1-216-091-00 RES-CHIP 1/10W R1330 1-216-081-00 RES-CHIP 1/10W R1073 1-216-065-91 RES-CHIP 4.7K 1/10W R1331 1-216-049-11 RES-CHIP...
  • Page 47 KV-25FS12 / 25FS12C REF.NO. PART NO. DESCRIPTION VALUES REF.NO. PART NO. DESCRIPTION VALUES C907 1-107-638-11 ELECT 33µF 160V R1389 1-216-071-00 RES-CHIP 8.2K 1/10W C908 1-126-935-11 ELECT 470µF R1390 1-216-025-11 RES-CHIP 1/10W C909 1-161-830-00 CERAMIC .0047µF 500V R1391 1-216-073-00 RES-CHIP 1/10W C910 1-104-999-11 MYLAR...
  • Page 48 4-082-076-01 CUSHION, LOWER 4-082-073-01 CUSHION, UPPER 4-081-525-41 MANUAL, INSTRUCTION REMOTE COMMANDER 1-418-852-11 REMOTE COMMANDER (RM-Y173) 3-709-322-01 BATTERY COVER (RM-Y173) Sony Corporation English Sony Technology Center 2001BS74101-1 Technical Services Printed in USA Service Promotion Deptartment © 2001.2 9-965-902-01 — 50 —...
  • Page 49 A BOARD SCHEMATIC DIAGRAM TU101 STEREO — BTF- WA412 TUNER TP100 C215 RF-AGC R421 AUDIO-R CHIP 4.7k C219 C214 R422 TP102 AUDIO-L R107 C105 1 16V DET OUT :CHIP C104 L103 STEREO MONO R603 T604 L102 C102 470k :CHIP PIN21 —...
  • Page 50 KV-25FS12 / 25FS12C CN460 TO K BOARD CN450 IC402 TDA8580Q/N1 AUDIO AMP AUDIO-R AUDIO-L AUDIO-L AUDIO-L (+)OUT PS401 2.7A/150V AUDIO VCC R237 D2003 R426 J202 C402 AUDIO-R C216 RD9.1EW-T1 CHIP AUDIO-L C401 2200 CHIP C403 (+)OUT (-)OUT 0.22 FRONT A/V INPUT R235 AUDIO-L...
  • Page 51 CN602 R650 R658 D608 -33V R649 R613 0.68 0.68 MTZJ-T-77-20B Q601 -23.6V 2.2M R571 Q507 D210 2SD2144S-TP-UVW 4.7k TO HZ BOARD 2SB709A MTZJ-T-77-10B :CHIP -33.1V R624 R622 F601 CN902 LOW B 100k Q602 AC IN 2SC3311A L604 D603 D607 -32.9V R651 AC IN MTZJ-T-77-33B...
  • Page 52 R639 -23.6V 2.2k -23.6V Q603 H.DY H.DY V.DY V.DY 2SA1309A-QRSTA C627 CN501 TP 508 PH601 R640 6P WHT 250V V OUT PC123FY2 PHOTOCOUPLER V DY + -31.2V V DY - TP507 R506 C510 L502 H DY - 250V V MID 2.2mH H DY - L504...
  • Page 53 MB BOARD SCHEMATIC DIAGRAM CN1003 TO A BOARD CN2009 STBY-7.5V — C1353 R1317 R1314 CHIP CHIP R1082 4.7k Q1003 CHIP R1043 8.2k 2SD601A VIDEO CHIP BUFFER — R1418 R1034 R1374 R1042 1k CHIP CHIP CHIP VIDEO R1068 CHIP 5.4V CHIP R1407 3.5V Q1001...
  • Page 54 KV-25FS12 / 25FS12C CN1004 TO A BOARD CN2002 STBY-7.5V VIDEO D1301 DAP202K Q1301 2SD601A CONVERGENCE R1403 R1404 :CHIP 0.6V 3.8V CHIP R1401 C1313 R1300 0.01 :CHIP :CHIP :CHIP Q1325 Q1326 2SD601A 2SD601A R1402 4.7k CHIP 1.8V R1110 C1394 Q1327 2.7k CHIP 2SD601A R1417...
  • Page 55 R1062 R1001 :CHIP C1048 C1049 C1050 D1012 R1066 CHIP :CHIP 0.47 0.0047 0.022 MA111TX :MPS :CHIP B:CHIP R1067 :CHIP R1069 :CHIP R1070 D1011 IC1305 MA111TX BA3993F :CHIP CHIP — VIDEO STBY +5V REG R1087 R1055 3.3k R1411 :CHIP R1071 :CHIP :CHIP CHIP R1074...
  • Page 56 0.01 CHIP VIDEO :CHIP R1365 R1364 R1357 :CHIP :CHIP CHIP Q1312 4.3V R1345 C1361 2SB709A FL1301 Q1313 C1355 BUFFER CHIP 1000 :CHIP 2SB709A BUFFER VIDEO VIDEO VIDEO VIDEO R1334 C1330 R1329 R1331 :CHIP :CHIP CHIP :CHIP Q1307 2SB709A Q1306 8.2V R1336 BUFFER R1326...

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