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Sony Trinitron KV-TF21M80 Service Manual
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Sony Trinitron KV-TF21M80 Service Manual

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SERVICE MANUAL

BG-3S
CHASSIS
MODEL
COMMANDER DEST.
CHASSIS NO.
MODEL
COMMANDER DEST. CHASSIS NO.
KV-TF21M80
RM-952
India
SCC-U22J-A
TRINITRON
COLOR TV
®
http://cxema.ru

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Summary of Contents for Sony Trinitron KV-TF21M80

  • Page 1: Service Manual

    SERVICE MANUAL BG-3S CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-TF21M80 RM-952 India SCC-U22J-A TRINITRON COLOR TV ® http://cxema.ru...
  • Page 2 CARBON PAINTED ON THE CRT, AFTER REMOVING THE LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE ANODE. COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS MANUAL.

  • Page 3: Table Of Contents

    KV-TF21M80 RM-952 TABLE OF CONTENTS Section Title Page Section Title Page SELF DIAGNOSIS FUNCTION 5. DIAGRAMS ........ 4 Block Diagram ............37 1. GENERAL ............Frame Schematic Diagram ........40 Circuit Boards Location .......... 42 2. DISASSEMBLY Schematic Diagrams and Printed Wiring Boards ... 42 2-1.

  • Page 4: Self Diagnosis Function

    KV-TF21M80 RM-952 SELF DIAGNOSTIC FUNCTION The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to flash. The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference.

  • Page 5: Disassembly

    KV-TF21M80 RM-952 DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT 2 times 5 times Lamp ON 0.3 sec. Lamp OFF 3 sec. Lamp OFF 0.3 sec. STANDBY/SLEEP lamp Diagnostic Item Flash Count* +B overcurrent/overvoltage 2 times Vertical deflection stopped White balance failure 5 times * One flash count is not used for self-diagnostic.
  • Page 6 KV-TF21M80 RM-952 SELF-DIAGNOSTIC SCREEN DISPLAY For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurances of failure for confirmation on the screen: [To Bring Up Screen Test] In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below: [Screen display] / channel [5] / Sound volume [-] / Power ON ˘...
  • Page 7 KV-TF21M80 RM-952 SELF-DIAGNOSTIC CIRCUIT IC301 IC001 IC003 Y/CHROMA JUNGLE SYSTEM MEMORY FROM IK-IN IO-8DAT B-DAT FROM O-LED [+B] Q604 C3 PROTECT IO-SDAT [V] Q509/507 [+B overcurrent ªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.

  • Page 8: General

    KV-TF21M80 RM-952 – 8 – http://cxema.ru...
  • Page 9 KV-TF21M80 RM-952 Using Your New TV – 9 – http://cxema.ru...
  • Page 10 KV-TF21M80 RM-952 Using Your New TV – 10 – http://cxema.ru...
  • Page 11 KV-TF21M80 RM-952 Using Your New TV – 11 – http://cxema.ru...
  • Page 12 KV-TF21M80 RM-952 Using Your New TV – 12 – http://cxema.ru...
  • Page 13 KV-TF21M80 RM-952 Using Your New TV Using Your New TV – 13 – http://cxema.ru...
  • Page 14 KV-TF21M80 RM-952 – 14 – http://cxema.ru...
  • Page 15 KV-TF21M80 RM-952 – 15 – http://cxema.ru...
  • Page 16 KV-TF21M80 RM-952 – 16 – http://cxema.ru...
  • Page 17 KV-TF21M80 RM-952 – 17 – http://cxema.ru...
  • Page 18 KV-TF21M80 RM-952 – 18 – http://cxema.ru...
  • Page 19 KV-TF21M80 RM-952 – 19 – http://cxema.ru...

  • Page 20: Rear Cover Removal

    KV-TF21M80 RM-952 – 20 – http://cxema.ru...

  • Page 21: Replacement Of Parts

    KV-TF21M80 RM-952 – 21 – http://cxema.ru...

  • Page 22: Picture Tube Removal

    KV-TF21M80 RM-952 – 22 – http://cxema.ru...

  • Page 23: Set-Up Adjustments

    KV-TF21M80 SECTION 3 RM-952 SET-UP ADJUSTMENTS • The following adjustments should be made when a complete Perform the adjustments in the following order : realignment is required or a new picture tube is installed. 1. Beam Landing • These adjustments should be performed with rated power 2.

  • Page 24: Convergence

    KV-TF21M80 RM-952 3-2. CONVERGENCE Preparation : • Before starting this adjustment, adjust the focus, horizontal size V. STAT and vertical size. • Minimize the brightness setting. • Provide dot pattern. (1) Horizontal and Vertical Static Convergence Center dot H. STAT VR H.
  • Page 25 KV-TF21M80 RM-952 (2) Dynamic Convergence Adjustment Preparation: • Before starting this adjustment, adjust the horizontal static convergence and the vertical static convergence on DY (3) Screen-corner Convergence Fix a Permalloy assy corresponding to the misconverged areas a-d : screen-corner misconvergence a to d : Permalloy assembly –...

  • Page 26: Focus Adjustment

    KV-TF21M80 RM-952 3-3. FOCUS ADJUSTMENT 3-4. G2 (SCREEN) AND WHITE BALANCE Adjust FOCUS control on the flyback transformer for the best ADJUSTMENTS 1. G2 (SCREEN) ADJUSTMENT focus. 1) Set the PICTURE to normal. 2) Put to VIDEO input mode without signals. 3) Connect R, G and B of the C3 board cathode to the oscillo- scope.

  • Page 27: Circuit Adjustments

    KV-TF21M80 SECTION 4 RM-952 CIRCUIT ADJUSTMENTS 4-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-952 that comes with 1, 4 this unit. Select the adjustment item. ↓ a. ENTERING SERVICE MODE 3, 6 Raise/lower the data value. With the unit on standby ↓...

  • Page 28: Adjustment Method

    KV-TF21M80 RM-952 4-2. ADJUSTMENT METHOD Item Number 00 of device GEO Use the same method for all Items. Use 1 and 4 to select the This explanation uses H-Position as an example. 1. Select “GEO 00 HPS” with the 1 and 4 buttons. adjustment item, use 3 and 6 to adjust, write with [MUTING] 2.
  • Page 29 KV-TF21M80 RM-952 – 29 – http://cxema.ru...
  • Page 30 KV-TF21M80 RM-952 – 30 – http://cxema.ru...
  • Page 31 KV-TF21M80 RM-952 – 31 – http://cxema.ru...
  • Page 32 KV-TF21M80 RM-952 ITEM INFORMATION. No. OPB0 OP1 XTAL 4.43 XTAL 3.58 SECAM 2nd. Lang Item KV-TF21M80 NOTE: When Bit 7, 6 & 5 = 000. Only PAL color system is selected. When Bit 7 is selected, Auto, PAL & NTSC 4.43 Color system is enable When Option is single color system, Color system cannot be changed &...

  • Page 33: Picture Quality Adjustments

    KV-TF21M80 RM-952 4-3. PICTURE QUALITY ADJUSTMENTS BELL FILTER ADJUSTMENT SUB COLOR ADJUSTMENT 1. Input SECAM color-bar signal. 2. Connect the dual-trace oscilloscope to the pin 9 (R-Y) of 1. Input a PAL color-bar. CN303 (not mounted). 2. Set to the following condition: 3.

  • Page 34: Picture Distortion Adjustment

    KV-TF21M80 RM-952 4-5. PICTURE DISTORTION ADJUSTMENT Item Number 00 – 0B GEO 0 HPS (H POSITION) GEO 1 HSZ (H SIZE) GEO 2 PAP (PIN AMP) GEO 3 TLT (TRAPEZIUM) GEO 4 VPS (V POSITION) GEO 5 VSZ (V SIZE) GEO 6 SCO (VERTICAL S-Correction) GEO 7...
  • Page 35 http://cxema.ru...
  • Page 36 http://cxema.ru...

  • Page 37: Block Diagram

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  • Page 38 http://cxema.ru...
  • Page 39 http://cxema.ru...

  • Page 40: Frame Schematic Diagram

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  • Page 41 http://cxema.ru...

  • Page 42: Circuit Boards Location

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  • Page 43: Schematic Diagram Of A(1/2) Board

    KV-TF21M80 SECTION 7 RM-952 The components identified by shading and mark ! are critical for safety. ELECTRICAL PARTS LIST Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK NOTE: • Items marked " ∗ " are not stocked since they •...
  • Page 44 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK C409 1-125-805-91 ELECT 4.7UF 20.00%50V C242 1-164-505-11 CERAMIC CHIP 2.2UF C243 1-216-295-61...
  • Page 45 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK C606 ! 1-127-942-51 <CONNECTOR> CERAMIC 330PF 250V C607 1-161-830-00 CERAMIC 0.0047UF...
  • Page 46 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK D527 8-719-908-03 DIODE GP08DPKG23 FB608 1-412-911-31 FERRITE D528 8-719-908-03 DIODE GP08DPKG23 FB611...

  • Page 47: Scheamtic Diagram Of A(2/2) Board

    KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK JR501 1-216-295-61 SHORT CHIP Q207 8-729-421-19 TRANSISTOR UN2213-TX JR503 1-216-295-61 SHORT CHIP...
  • Page 48 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R029 1-216-049-61 RES-CHIP 1/10W R235 1-216-069-61 RES-CHIP 6.8K 1/10W R031 1-216-049-61...
  • Page 49 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R406 1-216-073-61 RES-CHIP 1/10W R565 1-216-073-61 RES-CHIP 1/10W R407 1-216-049-61 RES-CHIP...
  • Page 50 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R644 1-220-959-91 METAL MELF 1.5K 1/2W <THERMISTOR> R646 1-215-924-00 METAL OXIDE R647...
  • Page 51 KV-TF21M80 RM-952 The components identified by shading and mark ! are critical for safety. Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK D709 8-719-911-19 DIODE 1SS119-25TD R730 1-220-949-91 METAL MELF 1/2W D710 8-719-911-19...
  • Page 52 PICTURE TUBE (A51LPT70X) ************************************************************* ************************************************************* REMOTE COMMANDER *********************** 1-418-163-11 REMOTE COMMANDER (RM-952) 9-939-697-01 BATTERY COVER, REMOTE COMMANDER (RM-952) Sony Corporation English 2000BS70034-1 Sony Technology Malaysia Sdn. Bhd. Printed in Malaysia  9-965-796-01 TV Business of General Area 2000.2 – 72 – http://cxema.ru...

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