Sony TRINITRON KV-20M42 Service Manual
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Sony TRINITRON KV-20M42 Service Manual

Sony trinitron color tv service manual
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MICROFILM

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Summary of Contents for Sony TRINITRON KV-20M42

  • Page 1 TRINITRON COLOR TV ® MICROFILM...

  • Page 2: Specifications

    • Size AA (R6) batteries (2) The ( ) SRS (SOUND RETRIEVAL SYSTEM) is manufactured by Sony Corporation under license from SRS Labs, Inc. It is covered by U.S. Patent No. Optional Accessories 4,748,669. Other U.S. and foreign patents pending.

  • Page 3: Table Of Contents

    6-4. Semiconductors ................................43 EXPLODED VIEWS 7-1. Chassis (KV-20S43/21SE42/42C/82/82C/ME42/42C) ....................44 7-2. Chassis (KV-20M42/S42/21MB42C/42M/42P/SB42C/42M) ..................45 ELECTRICAL PARTS LIST ...........................47 Table of Contents for Parts List ............................47 A Board Common Parts Listing............................48 C Board Parts List................................56 A Board Variant Parts Lists..............................57 Packaging List and Accessories..............................65...

  • Page 4: Warnings And Cautions

    PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA SECURITE DU THESE COMPONENTS WITH SONY PARTS WHOSE PART FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES COMPOSANTS SONY NUMBERS APPEAR AS SHOWN IN THIS MANUAL DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 5 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C Display of Standby/Timer LED Flash Count 2 times 4 times 5 times LED ON 0.3 sec. LED OFF LED OFF 0.3 sec. 3 sec. STANDBY/TIMER LED Diagnostic Item Flash Count* +B overcurrent 2 times Vertical deflection stopped 4 times...
  • Page 6 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C Handling of Self-diagnostic Screen Display Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”. Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

  • Page 7: Safety Check Out Instructions

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SAFETY CHECK-OUT After correcting the original service problem, perform the Leakage Test following safety checks before releasing the set to the The AC leakage from any exposed metal part to earth customer: ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 1.

  • Page 8: General

    SECTION 1 GENERAL The instructions mentioned here are partial abstracts from the Operating Instruction User Guide Manual. The page numbers shown reflect those of the Operating Instruction Manual. Connecting Your TV Connecting Additional Equipment Connecting Your TV TV and VCR Read this chapter before setting up your TV for the first time.
  • Page 9 Connecting Your TV User Guide TV and Cable Box TV, VCR, and Cable box Connect the coaxial cable from the wall to the IN jack on your cable box. Connect a coaxial cable (not supplied) from the OUT jack on your cable box to the VHF/UHF IN jack on the TV.

  • Page 10: Using The Remote Control And Basic Functions

    Connecting Your TV Using the Remote Control and Basic Functions Using the Remote Control and Connecting a Camcorder Using A/V cables, connect AUDIO and VIDEO OUT on your camcorder Basic Functions to AUDIO and VIDEO IN on your TV. This section shows you how to use more advanced buttons on the remote (Front A/V Panel) control and how to use the on-screen menus.

  • Page 11: Other Information

    If, after reading these operating instructions, you have additional questions related to the use of your Press so that MUTING disappears from the Sony television, please call our Direct Response Center at 1-800-222-SONY (7669) (U.S. customers Good picture, only) or (416) 499-SONY (7669) (Canadian customers only).

  • Page 12: Disassembly

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL Rear Cover Four Screws (BVTP 4x16) 2-2. A BOARD REMOVAL 2-3. SERVICE POSITION C Board A Board C Board Claw A Board — 12 —...

  • Page 13: Picture Tube Removal

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C 2-4. PICTURE TUBE REMOVAL Two Screws WARNING: BEFORE REMOVING THE ANODE CAP Two Speaker Boxes (KV-21SE82/82C ONLY) High voltage remains in the CRT even after the power is disconnected. A Board Degaussing Coil To avoid electric shock, discharge...

  • Page 14: Set-Up Adjustments

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SECTION 3 SET-UP ADJUSTMENTS The following adjustments should be made when Perform the adjustments in order as follows: a complete realignment is required or when a new 1. Beam Landing 2. Convergence picture tube is installed. 3. Focus These adjustments should be performed with rated 4.

  • Page 15: Convergence

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C 3-2. CONVERGENCE If the blue dot does not converge with the red and green dots, perform the following: Before starting convergence adjustments: 1. Move BMC magnet (a) to correct insufficient H. Static 1. Perform FOCUS, V.LIN AND V.SIZE adjustments.

  • Page 16: Focus

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C 3-5. METHOD OF SETTING THE SERVICE Screen-Corner Convergence ADJUSTMENT MODE 1. Affix a permalloy assembly corresponding to the misconverged areas. Service Mode Procedure 1. Standby mode (power off). Display Channel 5 Sound volume Power ON on the Remote Commander (press each button within a a-d: screen-corner second).

  • Page 17: Safety Related Adjustments

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SECTION 4 SAFETY RELATED ADJUSTMENTS 4-1. R582 CONFIRMATION METHOD Hold-down Readjustment (HV HOLD-DOWN CONFIRMATION) If the setting indicated in step 2 of Hold-down Operation AND READJUSTMENTS Confirmation cannot be met, readjustment should be performed The following adjustments should always be performed when...
  • Page 18 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C Digital Multimeter – TP600 C574 R582 T504 ABL11 Power Digital Ammeter Supply Multimeter 3mA DC Range 1SS119 – – – Figure 1 — 18 —...

  • Page 19: Circuit Adjustments

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SECTION 5 CIRCUIT ADJUSTMENTS Electrical Adjustment by Remote Commander Use the Remote Commander (RM-Y155) to perform the circuit adjustments in this section. NOTE: Test Equipment Required: • Pattern generator • Frequency counter • Digital multimeter • Audio oscillator 5-1.

  • Page 20: Adjustment Items

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C Adjustment Items DATA ITEM FUNCTION RANGE INITIAL DATA AVERAGE DATA HSIZ HORIZONTAL SIZE ADJ. 0-63 HPOS HORIZONTAL POS. ADJ. 0-63 VBOW VRT LINE BOWING ADJ. 0-15 VANG VRT LINE BOW SLANT ADJ. 0-15 TRAP HORIZ. TRAPEZOID ADJ. 0-15 PAMP HORIZ.

  • Page 21: Feature Id Map

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C DATA ITEM FUNCTION RANGE INITIAL DATA AVERAGE DATA SBAL SUB BALANCE 0-31 DISP O.S.D DISPLAY POSITION 0-127 PADJ POWER ADJUSTMENT 0-63 HCHM 0-255 HCLM 0-255 HCHS 0-255 HCLS 0-255 PVCH PVON PVLN 0-31 PVSB 0-255 PVLV 0-255 0-255...

  • Page 22: A Board Adjustments

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C 5-4. A BOARD ADJUSTMENTS 11. Return the following back to normal after adjustment. H. Frequency Adjustment PICTURE: 1. Input a monoscope signal. COLOR: CENTER 2. Set to Service Adjustment Mode. BRIGHT: CENTER R ON: ON (1) 3. Connect a frequency counter to base of Q501...

  • Page 23: Service Adjustment Mode Memory

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C V. Size Adjustment (VSIZ) V. Linearity (VLIN), V Correction 1. Input a crosshatch signal. 1. Input a crosshatch signal. 2. Set to Service Adjustment Mode. 2. V. correction is automatically adjusted from the circuit and should satisfy the conditions below.
  • Page 24 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C NOTES: — 24 —...
  • Page 25 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C NOTES: — 25 —...
  • Page 26 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C NOTES: — 26 —...

  • Page 27: Diagrams

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C SECTION 6 6.2 CIRCUIT BOARD LOCATIONS DIAGRAMS 6.1 BLOCK DIAGRAM • When replacing parts shown in the table below, be sure to perform the related adjustments. Part Replaced ( Adjustment ( DY, C511, C574, C575, D572, D573, HV HOLD-DOWN...

  • Page 28: A Board:

    KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C [TUNING CONTROL, Y/C/J, POWER SUPPLY, DEFLECTION, TUNER/IF, AUDIO MTS] A BOARD: IC521 NJM4558M-TE2 A BOARD: IC301 CXA2061S A BOARD LOCATION LIST DIODE D502 D634 A-11 TRANSISTOR Q357 D001 D520 D635 A-11 Q001 Q358 D002 F-10 D541 D636 C-10...
  • Page 29 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C A BOARD SCHEMATIC DIAGRAM A BOARD WAVEFORMS 253.1mV p-p (H) 3.5V p-p (8 MHz) 1.5V p-p (H) 4.2V p-p (V) 1.1V p-p (V) 1.8V p-p (H) 1.4V p-p (V) 2.0V p-p (H) 5.7V p-p (H) 4.4V p-p (V) 1.4V p-p (V)
  • Page 30 KV-20M42/20S42/20S43/21MB42C/21MB42M/21MB42P/21ME42/21ME42C/ 21SB42C/21SB42M/21SE42/21SE42C/21SE82/21SE82C R,G,B DRIVE CRT DRIVE C BOARD IC VOLTAGE LIST C BOARD WAVEFORMS IC1751 VOLT 148.4V p-p (H) 118.8V p-p (H) 122.5V p-p (H) 193.4 146.5 133.8 134.9 All voltages are in V A BOARD (*) MARK VARIANT LIST...
  • Page 31 2SA1091 2SC3209 2SD2137 2SC5426 2SD1292 2SD774 2SB709 2SD601A 2SC3311A 2SK2845 LETTER SIDE 1SS133T-77 D3SB60F ERC04-06S 1SS83TD D1NS4-TA D1NL20U-TA MTZJ-T-77-5.1C D1N20R-TA MTZJ-T-77-5.6C EL1Z-V1 RD3.3ES-T1B ERA22-08TP3 MTZJ-T-77-6.2C MTZJ-T-77-8.2B EZ0150AV1 MTZJ-T-77-10B RGP10GPKG23 CATHODE MTZJ-T-77-30D GP08DPKG23 S2L20UF S3L20UF4 RU-1P CATHODE UDZ-TE-17-5.1B CATHODE ANODE ANODE ANODE MA111-TX RU4AM-T3...
  • Page 32 Note: Note:...

  • Page 33: Printed Wiring Boards And Schematic Diagrams

    Note: Note:...
  • Page 34 NOTES:...

  • Page 35: A Board

    Description Page A BOARD COMMON PARTS LIST: Parts common to all models listed in this manual......46 A BOARD VARIANT PARTS LIST: Parts that belong only to the model specified. Refer to the designated variant parts list when seeking a part indicated by an asterisk (*) on the A board schematic, or by the word “variant”...
  • Page 36 Note: Note:...
  • Page 37 Note: Note:...
  • Page 38 Note: Note:...
  • Page 39 1-414-267-11 INDUCTOR 10 H FUSE L002 1-414-273-11 INDUCTOR 100 H L003 1-414-273-11 INDUCTOR 100 H F601 1-532-506-51 FUSE 6.3A/250V (except KV-20M42/20S42/20S43) L150 1-414-273-11 INDUCTOR 100 H F601 1-533-795-11 FUSE 6.3A/125V (KV-20M42/20S42/20S43 only) L151 1-414-267-11 INDUCTOR 10 H L160 1-414-267-11 INDUCTOR...
  • Page 40 Note: Note:...
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  • Page 42: C Board

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  • Page 43: Semiconductors

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  • Page 44: Chassis (Kv-20S43/21Se42/42C/82/82C/Me42/42C)

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  • Page 45: Chassis (Kv-20M42/S42/21Mb42C/42M/42P/Sb42C/42M)

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  • Page 46 Note: Note:...

  • Page 47: Electrical Parts List

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  • Page 48: A Board Common Parts Listing

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  • Page 53 Note: Note:...
  • Page 54 NOTES:...

This manual is also suitable for:

Trinitron kv-20s43Trinitron kv-20s42Trinitron kv-21mb42cTrinitron kv-21mb42mTrinitron kv-21mb42pTrinitron kv-21me42 ... Show all

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