Sony KV-G14K3 Service Manual
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Sony KV-G14K3 Service Manual

Trinitron color tv
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SERVICE MANUAL

MODEL
COMMANDER DEST.
KV-G14K3
RM-870 Vietnam
KV-G21K3
RM-870 Vietnam
RM-870
CHASSIS NO.
SCC-K26L-A
SCC-K26M-A
KV-G14K3
BG-1S (D)
MODEL
COMMANDER DEST. CHASSIS NO.
KV-G21K3
TRINITRON
CHASSIS
COLOR TV
®

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  • Page 1: Service Manual

    SERVICE MANUAL BG-1S (D) CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-G14K3 RM-870 Vietnam SCC-K26L-A KV-G21K3 RM-870 Vietnam SCC-K26M-A RM-870 KV-G14K3 KV-G21K3 TRINITRON COLOR TV ®...
  • Page 2 CARBON PAINTED ON THE CRT, AFTER REMOVING THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE ANODE. THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. – 2 –...

  • Page 3: Table Of Contents

    2-4. Replacement of Parts ........... 2-5. Demagnetization Coil Removal ......7. EXPLODED VIEWS 2-6. Picture Tube Removal ......... 7-1. Chassis (KV-G14K3) ..........3. SET-UP ADJUSTMENTS 7-2. Chassis (KV-G21K3) ..........3-1. Beam Landing ............8. ELECTRICAL PARTS LIST ......3-2. Convergence ............

  • Page 4: General

    SECTION 1 The operating instructions mentioned here are partial abstracts from the Operating Instr uctions Manual. The page numbers of the Operating GENERAL Instruction Manual remain as in the manual. TV SYSTEM AUTO PROGR TV SYSTEM AUTO PROGR...
  • Page 5 Getting Started Front of TV Connections Camcorder VIDEO INPUT VIDEO AUDIO to video and audio outputs : Signal flow When using the video input jacks Connecting a VHF antenna or a combination VHF/UHF antenna Do not connect video equipment to the video input jacks at the front and the rear of your TV simultaneously; otherwise the picture will —...
  • Page 6 Press SELECT until “MANUAL PROGRAM” Presetting channels Presetting channels manually using the Presetting channels automatically appears. buttons on the TV using the remote commander + or – SELECT Press MANUAL PROGR. SELECT Press PROGR +/– on the remote commander until the required program position MANUAL PROGRAM Press POWER to turn on the TV.
  • Page 7 Operations • The last TV program position or video input just before the TV Watching the TV Turning off the TV Displaying on-screen information turns into standby mode will appear when the TV is turned on using the Wake Up Timer. To turn off the TV temporarily •...
  • Page 8 Using the Child Lock Watching the picture Adjusting the Adjusting the picture Adjusting the picture setting feature in wide mode Press SELECT until the item you want to picture adjust appears. SELECT Each time you press SELECT, the screen changes You can adjust the display mode accordingly to fit the You can prevent a child from watching certain program Note on the SOUND MODE button...

  • Page 9: Troubleshooting

    Additional Information No picture Troubleshooting No sound / Press POWER. / Check the antenna connection. / Check the VCR connections. / Check the power cord connection. If you have any problems, read this manual again and / Check the standby mode. check the countermeasure for each of the symptoms listed below.

  • Page 10: Disassembly

    2-3. SERVICE POSITION A board 2 Two screws (BVTP 4×16) 3 One screw (BVTP 3×12: KV-G14K3) (BVTP 3×16: KV-G21K3) 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 2-2.

  • Page 11: Demagnetization Coil Removal

    For KV-G21K3 2-5. DEMAGNETIZATION COIL REMOVAL For KV-G14K3 2 Demagnetization coil 1 Tension spring 3 DGC holder DGC holder Two screws (BVTP 3×10) 2-4-2. REPLACEMENT OF LIGHT GUIDE, POWER BUTTON Picture tube For KV-G14K3 Light guide For KV-G21K3 Two screws (BVTP 3×12)

  • Page 12: Picture Tube Removal

    2-6. PICTURE TUBE REMOVAL For KV-G14K3 3 C board 2 A board 4 Deflection yoke 5 Four screws 1 Turn up one side of the rubber cap 2 Using a thumb pull up the rubber (Tapping screws) in the direction indicated by the cap firmly in the direction indicated arrow a.

  • Page 13: Set-Up Adjustments

    KV-G14K3/G21K3 SECTION 3 RM-870 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 • These adjustments should be performed with rated power Convergence supply voltage unless otherwise noted.

  • Page 14: Convergence

    KV-G14K3/G21K3 RM-870 • 3-2. CONVERGENCE Operation of V.STAT Magnet. Preparations : • Before starting this adjustment, adjust the focus, horizontal size, and vertical size. • Minimize the brightness setting. • Provide dot pattern. (1) Horizontal and Vertical Static Convergence Center dot BMC Magnet V.STAT Magnet...
  • Page 15 KV-G14K3/G21K3 RM-870 Purity • The respective dot positions resulting from moving each magnet BMC (Hexapole) interact, so be sure to perform adjustment while tracking. Use the V. STAT magnet to adjust the red, green, and blue dots so they coincide at the center of screen (by moving the dots in the horizontal direction).

  • Page 16: Focus Adjustment

    3) Call the adjusted items again to confirm they were adjusted. DATA SERVICE Adjustment Item Permalloy assembly Item number 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 WRITE MUTING the best focus. Green (KV-G21K3 only)

  • Page 17: G2 (Screen) And White Balance Adjustments

    2) Put to VIDEO input mode without signals. 3) Connect R, G, and B of the C board cathode to the oscillo- scope. 4) Adjust G2 (RV701) volume to the value below. 165±2 V: KV-G14K3 177±2 V: KV-G21K3 2. WHITE BALANCE ADJUSTMENTS 1) Set to Service Mode.

  • Page 18: Self Diagnosis Function

    KV-G14K3/G21K3 SECTION 4 RM-870 SELF DIAGNOSIS FUNCTION If no acknowledgement is returned from a device which is turned "ON", the device has a problem. In this case, one of the LED's responding to the problem device will flicker a defined number of times.

  • Page 19: Circuit Adjustments

    KV-G14K3/G21K3 SECTION 5 RM-870 CIRCUIT ADJUSTMENTS 5-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-870 that comes with this unit. [1], [4] Raise/lower the service item number [3], [6] Raise/lower the data [MUTING] Writes Entering service mode Executes the writing With the unit on standby ↓...

  • Page 20: Adjustment Method

    KV-G14K3/G21K3 RM-870 5-2. ADJUSTMENT METHOD Item Number 08 Use the same method for Items Number 00-2D. Use [1] and [4] to This explanation uses V-SHIFT as an example. select the adjustment item, use [3] and [6] to adjust, write with 1.
  • Page 21 KV-G14K3/G21K3 RM-870 Adjustment Item Table Data Initial Item Adjustment Standard data Note Device range data number Item 00–3F H SHIFT TDA8375 00–3F H SIZE TDA8375 00–3F PIN AMPLITUDE TDA8375 00–3F CORNER PIN TDA8375 00–3F TILT TDA8375 00–3F V SLOPE TDA8375 00–3F...
  • Page 22 KV-G14K3/G21K3 RM-870 NOTE • Standard Data: Those are the standard data values written on the microprocessor. Therefore, the data values of the modes are stored respectively in the memory. In case of a device replacement, adjustment by rewriting the data value is necessary for some items.

  • Page 23: A Board Adjustment After Ic003 (Memory) Replacement

    KV-G14K3/G21K3 RM-870 5-4. PICTURE DISTORTION ADJUSTMENT 5-3. A BOARD ADJUSTMENT AFTER IC003 Item Number 00 – 08 (MEMORY) REPLACEMENT 1. Enter to Service Mode. HSF (H SHIFT) 00 HSF (H SHIFT) 2. Press commander buttons [5] and [0] (Data Initialize), and [2] and [0] (Data Copy) to initialize the data.
  • Page 24 KV-G14K3/G21K3 RM-870 MEMO ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...

  • Page 25: Diagrams 6-1. Block Diagrams

    4: BVTP3 × 16 7-685-650-79 Replace only with part number part are indicated with a collation specified. number in the remark column. 7-1. CHASSIS (KV-G14K3) [ : BVTP3 × 12 7-685-648-79 L : BVTP4 × 16 7-685-663-79 REF. NO. PART NO. DESCRIPTION REMARK REF.

  • Page 26: Electrical Parts List

    COILS please include the board name. • MMH : mH, UH : µH REF.NO. PART NO. DESCRIPTION REMARK REF.NO. PART NO. DESCRIPTION REMARK * A-1298-477-A A BOARD, COMPLETE (KV-G14K3) C102 1-136-165-00 FILM 0.1MF ********************* C105 1-126-933-11 ELECT 100MF C106...

  • Page 27: Circuit Boards Location

    KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK C327 1-102-947-00 CERAMIC 10PF 0.5PF 50V C627...
  • Page 28 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK CN603 * 1-508-786-00 PIN, CONNECTOR (5MM PITCH) 2P...
  • Page 29 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK L808 1-412-553-11 INDUCTOR 3.3MMH R035 1-249-417-11 CARBON...
  • Page 30 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R313 1-249-419-11 CARBON 1.5K 1/4W R619 1-219-134-11...

  • Page 31: Schematic Diagrams And Printed Wiring Boards (1) Schematic Diagram Of A Board

    KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK <TUNER> R1217 1-249-413-11 CARBON 1/4W R1219...
  • Page 32 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK C074 1-102-110-00 CERAMIC 220PF C332 1-136-165-00 FILM 0.1MF...
  • Page 33 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK C628 1-102-824-00 CERAMIC 470PF <CONNECTOR> C630 ! 1-164-497-51...
  • Page 34 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK D853 8-719-302-43 DIODE EL1Z <COIL> D855 8-719-302-43...

  • Page 35: Schematic Diagrams Of A11 And C Boards

    KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R013 1-249-417-11 CARBON 1/4W R252 1-249-411-11 CARBON...
  • Page 36 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R561 1-249-421-11 CARBON 2.2K 1/4W R882 1-249-422-11 CARBON 2.7K...
  • Page 37 1-247-863-91 CARBON 1/4W <THERMISTOR> R430 1-249-413-11 CARBON 1/4W THP601!1-808-059-32 THERMISTOR, POSITIVE <TUNER> **************************************************************************** TU101 8-598-323-00 TUNER, VSS BT-AG401 * A-1331-592-A C BOARD, COMPLETE (KV-G14K3) ********************* <CRYSTAL> X101 1-577-082-11 VIBRATOR, CERAMIC X300 1-411-752-11 COIL <CAPACITOR> X358 1-567-505-11 OSCILLATOR, CRYSTAL X443 1-567-504-11...
  • Page 38 KV-G14K3/G21K3 RM-870 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. (KV-G14K3) (KV-G21K3) REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK <TRANSISTOR> C704 1-130-202-00 FILM 0.022MF 400V...

  • Page 39: Semiconductors

    CORD, POWER R719 1-215-480-00 METAL 300K 1/4W ! 1-900-700-05 LEAD ASSY, FOCUS (KV-G21K3) R720 1-249-923-11 CARBON 1/4W F 8-451-418-21 DEFLECTION YOKE (Y14NDA2) (KV-G14K3) R721 1-215-489-00 METAL 680K 1/4W 8-451-280-33 DEFLECTION YOKE (Y21PXA2) (KV-G21K3) ! 8-735-562-05 R722 1-249-923-11 CARBON 1/4W F...

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Kv-g21k3

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