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Sony TRINITRON HMD-A420 Service Manual
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Sony TRINITRON HMD-A420 Service Manual

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MODIFICATION
HISTORY
MODEL NAME :HMD-A420
SERVICE MANUAL
PARTS No. : 9-978-686-02
* Blue characters are linking.
# No.
DATA
#1
2000.11 Correct in writing. (P.6-3)
#2
2000.11 Addition of printed wiring boards. (P. 5-8, 5-11, 5-13)
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  • Page 1 MODIFICATION # No. DATA CONTENTS 2000.11 Correct in writing. (P.6-3) HISTORY 2000.11 Addition of printed wiring boards. (P. 5-8, 5-11, 5-13) MODEL NAME :HMD-A420 SERVICE MANUAL PARTS No. : 9-978-686-02 * Blue characters are linking.

  • Page 2: Service Manual

    HMD-A420 SERVICE MANUAL AEP Model Chassis No. SCC-L35A-A CHASSIS SPECIFICATIONS 0.24 mm aperture grille pitch (center) 19 inches measured diagonally 90-degree deflection FD Trinitron Approx. 365 × 274 mm (w/h) Viewable image size × 10 inches) 18.0" viewing image Resolution Maximum Horizontal: 1800 dots Vertical: 1440 lines...
  • Page 3 VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR Parts on Set SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS AP- PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE- MENTS PUBLISHED BY SONY. CIRCUIT ADJUST- MENTS THAT ARE CRITICAL FOR SAFE OPERATION 0.15 µF...

  • Page 4: Power Saving Function

    ! (power) indicator and inform your authorized Press the ! (power) button twice to turn the monitor Sony dealer of the monitor’s condition. Be sure to note the model off and then on. name and serial number of your monitor. Also note the make and model of your computer and video board.

  • Page 5: Timing Specification

    HMD-A420 TIMING SPECIFICATION MODE AT PRODUCTION MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 RESOLUTION 640 X 480 640 X 480 720 X 400 800 X 600 832 X 624 CLOCK 25.175 MHz 36.000 MHz 28.321 MHz 56.250 MHz 57.283 MHz —...

  • Page 6: Table Of Contents

    HMD-A420 TABLE OF CONTENTS Section Title Page 1. GENERAL ..............1-1 2. DISASSEMBLY 2-1. Bucket Assembly Removal ......... 2-1 2-2. A Board Removal ..........2-1 2-3. D Board Removal ..........2-2 2-4. Service Position ............ 2-3 2-5. H Board Removal ..........2-4 2-6.
  • Page 7 MENU...
  • Page 9 D EGA U S S USER 5000 6500 9300 R E S E T MOD E A L L H - C E N T ER RO T A T I ON...
  • Page 10 MENU USER 5000 6500 9300...
  • Page 12 MENU...

  • Page 13: Disassembly

    HMD-A420 SECTION 2 DISASSEMBLY 2-1. BUCKET ASSEMBLY REMOVAL Bucket assembly Two screws (+BVTP 4 x 16) Two screws (+BVTP 4 x 16) 2-2. A BOARD REMOVAL CN309 CN305 CN302 CN307 CN306 A board CN303 CN310 CN304 CN301...

  • Page 14: D Board Removal

    HMD-A420 2-3. D BOARD REMOVAL Two screws Cable holder (+BVTP 3 X 12) I/O Cable Cable bracket Cable stopper Screw (+BVTP 3 X 12) Screw (+BVTT 4 X 8) A board CN304 CN301 Bottom assembly CN302 Two screws (+BVTT 4 X 8) CN310 CN309 CN306...

  • Page 15: Service Position

    HMD-A420 2-4. SERVICE POSITION A board D board • REMOVAL OF ANODE-CAP NOTE: Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon painted on the CRT, after removing the anode. •...

  • Page 16: H Board Removal

    HMD-A420 2-5. H BOARD REMOVAL Three screws (+BVTP 3 X 12) Menu knob H board Cushion 2-6. PICTURE TUBE REMOVAL A board Bottom assembly Screw (+BVTP 4 X 16) Four tapping screws (5) Screw (+BVTP 4 X 16) Deflection yoke Neck assembly Picture tube Connector (2P)

  • Page 17: Harness Location

    HMD-A420 2-7. HARNESS LOCATION H board Power switch P701 P702 P703 Picture tube CN506 CN901 CN502 CN505 CN903 CN902 CN300 D board CN501 CN603 CN4001 CN604 CN602 AC inlet CN306 CN304 CN301 CN310 CN305 CN302 CN303 CN309 CN307 A board...

  • Page 18: Safety Related Adjustment

    HMD-A420 SECTION 3 SAFETY RELATED ADJUSTMENT When replacing parts shown in the table below, the After adjusting the High Voltage within specification, put the RV cover on RV501 as shown below and apply following operational checks must be performed as a safety precaution against X-ray emissions from the unit.

  • Page 19: Adjustments

    HMD-A420 SECTION 4 ADJUSTMENTS Connect the communication cable of the connector located on the D board on the monitor. Run the service software and then follow the instructions. 1-690-391-21 A-1500-819-A 3-702-691-01 Interface Unit Connector Attachment IBM AT Computer To BUS CONNECTOR as a Jig D-sub mini Din...
  • Page 20 HMD-A420 TLV movement 4. Display crosshatch pattern with red and blue lines and black field. 5. Adjust H.STAT and V.STAT with 4 pole magnet. Use 4 pole magnet, not “HSTAT” and “VSTAT”. 4 Pole Magnet 15. If necessary, repeat steps 3-14 to make the optimum condition for the entire screen.

  • Page 21: Diagrams

    SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAMS SIGNAL-IN HD15 PIG-TAIL (VIDEO, RGB OUT) IC001 PRE AMP,OSD MIX IC002 RGB OUT CN301 R.G.B R IN R OUT R VIN2 R VOUT2 GREEN G IN G OUT BLUE B IN G VIN3 G VOUT3 H-IN V-IN B OUT...
  • Page 22 CN2903 USB DB_A BLOCK USB BLOCK IC7000 USB CONT IC7001 P8D1 P7D1 µ-COM, DEFLECTION CONTROL, PSW1 OUTA DEFLECTION, HV, POWER SUPPLY, FLGA OC1_N H.DF, V.DF, USB CONTROL OC2_N FLGB CN2903 OUTB PSW2 23 INDV/SCL 22 OPTION/SDA CN904 P7000 USB DM USB DM 28 DM0 USB DB_B BLOCK...

  • Page 23: Frame Schematic Diagram

    5-2. FRAME SCHEMATIC DIAGRAM 5-3. CIRCUIT BOARDS LOCATION CN301 H-IN V-IN RGND VIDEO CABLE GGND VIDEO, GREEN BGND RGB OUT BLUE CN301 PICTURE DDC SCL TUBE VIDEO CABLE DDC SDA PCDET G1 G2 P701 CN903 MENU MENU ORG LED ORANGE/LED GRN LED GREEN/LED USER...

  • Page 24: Schematic Diagrams And Printed Wiring Boards

    5-4. SCHEMATIC DIAGRAMS AND PRINTED (1) Schematic Diagram of H Board • Divided circuit diagram WIRING BOARDS One sheet of D board circuit diagram is divided into six Note: sheets, each having the code D-a to D-f. For example, the •...

  • Page 25: Schematic Diagram Of A Board

    (2) Schematic Diagram of A Board +12V +12VF J001 CRT_SOKET D102 D101 C054 L001 (VIDEO,RGB OUT) 1N4148 1N4148 100µH IC002 +6.3V LM2412 CN301 V901 D202 D201 RGB OUT IC001 1SS119 1SS119 PICTURE M52743BSP C005 C006 H-IN PRE AMP,OSD MIX C013 TUBE D302 D301...
  • Page 26 A  VIDEO, RGB OUT — A BOARD (Coductor Side) — — A BOARD (Component Side) — Schematic diagram Ò Ò Ò Ò Ò 5-11 5-12 board...
  • Page 27 D  µ-COM, DEFLECTION CONTROL, DEFLECTION, HV, POWER SUPPLY, H. DF, V. DF, USB CONTROL — D BOARD — 5-13 5-14...
  • Page 28 a , b b , c c , d d , e e , f f ) Board (3) Schematic Diagrams of D (a (µ-COM,DEFLECTIONÅ CONTROL) R900 +17V IC901 ST72754 TH602 R402 C406 C900 R939 D402 1.82k 3300p R403 100V 1N4002 2.2 1/2W PC0/...
  • Page 29 (DEFLECTION) D522 R589 PG104R +12V R586 Q532 Q531 107k R516 2SA733 R523 KSP92 R590 D532 16.4 R537 4.3k Z10-160B C577 JW(10) 250V 16.4 -27.6 R5111 R408 1/2W R509 15.8 R566 R512 3.6k Q529 D523 2SC945P 1SS119 V DY+ ABL CONT R5107 Q528 R409...
  • Page 30 (HV) +12V R593 +81V FB502 C564 5.2µH D533 1SS119 R519 T501 IC502 100 2W C537 UC3843 C539 2200p PWM CONT R581 C558 100V 0.033 PICTURE TUBE 100V R5142 D521 COMP VREF 100 2W BYV27 C554 R569 680p D516 R584 R554 D515 1S119 5.6k...
  • Page 31 D632 1N4148 Q607 2SA966 C645 +6.3V SW SW601 D601 L608 POWER LF601 D4SB60L-F T603 13mH AC RECT D619 L606 CN601 T601 C640 F601 15µH 1SS119 AC-SOCKET FB612 250V R601 C602 600µH 250V 560k 0.68 D623 FB614 R651 R652 1/2W 250V Q608 UF5406 RN1203...
  • Page 32 (H.CONV,V.CONV) +12V CN506 R5141Ł C586 R5140 R5135 Q545 2SD667 C597 1/4W 0.22 R5139 Q546 2SB647 C594 IC4000 R5137 – -15V C588 0.033U VrefL R4001Ł Vrefu1 Vrefu2 R6009 +15V D620 L6001 C4002 100µH C6006 D6001Ł C6007Ł T6000 220UF CHOKE R4007Ł 2200p Q4001 BYV26C IC4001...
  • Page 33 L7020 3.3V P8D1 2.3µH (USB CONTROL) P7D1 L7019 2.3µH R7002 P7000 C7016 1.5k C7015 R7000 L7001Ł L7005Ł C7013 0.45µH USB DM DGND DGND C7014 L7002 P7001 USB DP L7006 0.45µH R7016 L7003 TO D-a BOARD R7001 1µH CN904 R7028 24 IC7000 ISP1122 R7029...

  • Page 34: Semiconductors

    5-5. SEMICONDUCTORS BH3863F M51951BSL IRFU110 2SA733-QP D4SB60L MAA3371X BH3863F-E2 IRFU110A 2SA733TP-QP D4SB60L-F 2SA966-Y 2SB647A-C 2SC2655 2SC945-P 2SD669AVC TOP VIEW 24 pin SOP CATHODE ANODE M52743BSP LA78040 D2L40-TA MTZJ-15A IRF640 ER106 MTZJ-5.1A HSS82 MTZJ-5.1B TOP VIEW HZ12 RD15ES-B1 36 pin DIP HZ5C1 RD5.1ESB2 2SB649-C...

  • Page 35: Exploded Views

    HMD-A420 SECTION 6 EXPLODED VIEWS NOTE: • Items with no part number and no • Items marked " * " are not stocked since ¡ The components identified by mark description are not stocked because they they are seldom required for routine are critical for safety.

  • Page 36: Picture Tube

    63 0 1-452-912-11 NECK ASSEMBLY 4-080-737-01 KNOB, POWER IQA76R9R6E 64 0 8-451-520-11 DEFLECTION YOKE (Y19TKK3-M) 4-060-162-01 SPRING, COMPRESSION 2011097M10 65 0 8-736-407-05 PICTURE TUBE 19TKC 4-044-932-11 EMBLEM (NO.8), SONY 4-038-870-00 CLIP, LEAD WIRE 4-073-619-21 KNOB, MENU 1QAO035R51 * A-1372-920-A H BOARD, COMPLETE TU9R6E0344 1-452-032-00 MAGNET, DISK;...

  • Page 37: Packing Materials

    HMD-A420 6-3. PACKING MATERIALS REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK X-4038-556-1 STAND ASSY SS9R6E0320 7-685-663-71 SCREW +BVTP 4X16 TYPE2 IT-3 8026114012 1-792-032-11 CABLE, USB C7117R1010 4-079-363-11 MANUAL, INSTRUCTION 9012099R6E 4-079-900-01 CUSHION (UPPER) (ASSY) 9002099R6E 104 * 4-060-620-01 BAG, POLYETHYLENE 9008095R51 4-079-901-01 CUSHION (LOWER) (ASSY)9003099R6E 105 * 4-079-388-01 INDIVIDUAL CARTON...

  • Page 38: Electrical Parts List

    HMD-A420 HMD-A420 ¡ The components identified by mark Les composants identifiés par une SECTION 7 ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce ELECTRICAL PARTS LIST portant le numéro spécifié.
  • Page 39 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié. REF.NO.
  • Page 40 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. (a)(d) Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié. REF.NO.
  • Page 41 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié. REF.NO.
  • Page 42 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié. REF.NO.
  • Page 43 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié. REF.NO.
  • Page 44 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié. REF.NO.
  • Page 45 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié. REF.NO.
  • Page 46 HMD-A420 ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié. REF.NO.
  • Page 47 <SWITCH> SG501 1-519-422-11 GAP, SPARK 5106152204 SW701 1-771-734-11 SWITCH, TACTILE (MENU) 4410606000 <TRANSFORMER> T501 0 1-453-362-11 TRANSFORMER, FLYBACK 7050309R00 ****************************************************************************************** Sony Corporation English Computer Display Division Company 2000KL05189-1 Computer Display Div. 9-978-686-02 Printed in Japan © 2000.11 – 58 –...

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