1. Manuals
  2. Brands
  3. Sony Manuals
  4. TV
  5. FD Trinitron WEGA KV-32FV16
  6. Training manual

Sony KV-32FV16 Training Manual

Direct view television, aa2u chassis
Hide thumbs Also See for KV-32FV16:
Table of Contents

Advertisement

Quick Links

Download this manual
S
®
Direct View Television
AA2U Chassis
Models: KV-32FV16
KV-32FV26
KV-36FS12
Circuit Description and Troubleshooting
Course: CTV-28
KV-36FS16
KV-36FV16
KV-36FV26
Training Manual

Advertisement

Table of Contents
loading

Related Manuals for Sony KV-32FV16

Summary of Contents for Sony KV-32FV16

  • Page 1 Training Manual ® Direct View Television AA2U Chassis Models: KV-32FV16 KV-36FS16 KV-32FV26 KV-36FV16 KV-36FS12 KV-36FV26 Circuit Description and Troubleshooting Course: CTV-28...
  • Page 2 Table of Contents Introduction Other Service Mode Displays Overview Tuner Control CTV-28 Objectives Tuning to a new Channel Features Auto Programming Auto SAP (Secondary Audio Program) Audio Features Video Features Video Path Block Convenience Features Video Switching and Comb Filter Input/Output Video Switching Feature Glossary...

  • Page 3: Table Of Contents

    C Problems +12 Volts +9 Volts Power Supply Block Audio B+ Troubleshooting Power Supply Protection Standby Power Supply Latch Converter Operation +135 Over Current Protection Regulation Foldback Over Current Protection (OCP) Appendix Over Voltage Protection (OVP) Vertical Deflection Secondary Output Horizontal Deflection Block Checking Q621 Horizontal Out...
  • Page 4 • Show how the NVM is powered and used. Talk about the service This course will cover the new Sony AA2U chassis. These sets are 32”and mode and what the various sections of adjustments do, what adjust- 36” only. This chassis is very similar to the AA2W chassis that was re- ments should be performed and what adjustments should always con- leased last year.
  • Page 5 These features will be separated into four categories: Audio, Video, Con- venience and Input/Output. The following models use the AA2U chassis: Convenience Features AA2U chassis: All the AA2U models contain the following Convenience features: KV-32FV16 KV-36FS16 Speed Surf Tuning Clock Timer (2 events) KV-32FV26...
  • Page 6 Feature Glossary Y/Pb/Pr - Delivers optimum picture quality by supplying separate connec- tions for luminance (Y), blue color difference (P B) and red color differ- Audio Features ence (P R ). Ideal for DVD players and Digital Television (DTV) set top Auto Mute –...
  • Page 7 Board Descriptions Name Description Tuning Micon, Y/C Jungle, Tuner, Pincushion, H Deflection, V Deflection, H Deflection Audio Amp, Surround Sound, Sub tuner, S-Link CRT Drive Power supply Front A/V Inputs, Menu Buttons IR detector HS (FS12 and FS16 only) Front A/V Inputs, Menu Buttons, IR Detector Buttons T(FV26 Only) IR Headphones...
  • Page 8 STEREO R1115 Q016 R1117 FROM D002 IK IN C053 C BOARD R1101 MTZJ5.6C BDA IC002 IC355 IOBDATN IC001 TUNING MICON STANDBY/ TIMER LED TO V YOKE IC561 HP/PRM V OUT DISPLAY, 5, VOL-, POWER VM OUT/ PROTECT NORMAL SELF DIAGNOSIS 2: +B OCP N/A Q562, 3: +B OVP N/A...

  • Page 9: Power Supply Block

    Shortly after the click of the power relay at turn ON, another click is heard. Power Supply Block This click is RY601 Degauss Relay closing. This may be accompanied by a hum sound that indicates the operation of the degaussing coils. There Overview is a third click that occurs about 8-10 seconds after the unit is turned ON.
  • Page 10 T605 CONVERTER RECT. + SECONDARY INPUT RY600 SUPPLIES B+ 135V CN1641 A BOARD DEGAUSSING +135V RY601 SOFT START POWER ON FOLDBACK REGULATION STANDBY 5V CN641 PROTECTION G BOARD & LATCH CN642 AUDIO B+ CN1643 AUDIO GND STANDBY POWER BOARD SUPPLY POWER SUPPLY BLOCK 7aCTV28 11/3/00...

  • Page 11: Standby Power Supply

    Standby Power Supply Overview The standby power supply is a switching power supply used to create Standby 5V. The Standby 5V line is used to power the Tuning Micon, EEPROM and any other circuits which require power when the set is OFF. Converter Operation Q621/G - 1 V, 10 us Q621/D - 50 mv, 10 us...
  • Page 12 T621 FB621 R639 4.7 OHMS D621 D622 C631 R640 TO RY600 FROM POWER RELAY T601/1 D623 AC Hi SIDE IC622 R631 5V REG 7.2VDC BAO5T D628 CN641 C630 R632 D624 STANDBY C650 +5V TO D698 Q621 D625 A BOARD 2SK2845 CN1641 D699 R633...

  • Page 13: Over Current Protection (Ocp)

    Over Current Protection (OCP) Secondary Output Monitoring the voltage across R637 is used for over current protection. The power coupled through T621 SRT places a voltage on T621/9, which This voltage is representative of the amount of current flowing through when rectified and filtered by D628 and C637 is 7.2 volts.
  • Page 14 T621 FB621 R639 4.7 OHMS D621 D622 C631 R640 TO RY600 FROM POWER RELAY T601/1 D623 AC Hi SIDE IC622 R631 5V REG 7.2VDC BAO5T D628 CN641 C630 R632 D624 STANDBY C650 +5V TO D698 Q621 D625 A BOARD 2SK2845 CN1641 D699 R633...

  • Page 15: Power On/Degaussing

    Degaussing Power On/Degaussing When the set is turned ON, a click is heard from the Power Relay RY600. About one second later another click is heard from RY601 Degauss Re- Overview lay. After this a loud hum can be heard. This indicates that the degauss- This section discusses how the converter B+ voltage is created when the ing circuit is operating.
  • Page 16 IC622 BAO5T CN641/10 5V REG. STANDBY R623 STANDBY R603 C603 POWER SUPPLY CN602 R664 T602 T601 RY600 R607 D602 0.1 OHM CN603 F601 C605 VDR601 VDR602 C604 D629 6.3A R625 C607 CONVERTER D630 C606 CN601 R624 THP603 C601 RY601 GROUND O-DGC 12V FROM Q644...

  • Page 17: Converter

    Soft Start Converter The voltage across T603/7 and 8 Control Winding determines the fre- quency of operation. The control winding is a cross inductance winding. Overview At initial startup the converter has to operate above the optimum power The function of the converter is to switch the Converter B+ voltage through transfer frequency of T605 PIT.
  • Page 18 T605 +135V TO A BOARD CN1641 +12V SECONDARY CN641 SUPPLIES AUDIO B+ C615 AUDIO TO AK GND. BOARD CN1463 R601 R607 CN642 TO PROTECTION R615 D607/K D603 120K 310 V R602 C618 VCC RECT. R612 C613 T603 120K C612 C609 R608 C608 VCC RECT.

  • Page 19: Troubleshooting

    Troubleshooting When performing this procedure set your variac to zero and jumper the relay contacts. Warning: By jumping the relay contacts you have One of the most common failures in switching power supplies are the defeated the protection circuitry of the power supply. Plug the unit converter transistors, or in the case of this power supply, IC601.
  • Page 20 T605 +135V TO A BOARD +12V CN1641 SECONDARY CN641 SUPPLIES AUDIO B+ C615 AUDIO TO AK GND. BOARD CN1463 R601 R607 CN642 TO PROTECTION R615 D607/K D603 120K 310 V C618 R602 VCC RECT. R612 C613 T603 120K C612 C609 R608 C608 VCC RECT.

  • Page 21: Soft Start/Regulation/Foldback

    Regulation Soft Start/Regulation/Foldback The power supply is regulated by the control winding of PRT T603/7 and 8 in the following manner: Overview An increase in voltage across the control winding will reduce the induc- The three circuits discussed here all have an affect on the voltages across tance of the windings in T603, thereby increasing the converter frequency.
  • Page 22 STANDBY PART OF IC643 RY600 135V DM-58 R661 R658 FROM CONTROL D643 R659 C652 RECTIFIER R648 R647 D612 Q645 R649 C651 R627 Q647 T603 PRT CONTROL C602 WINDING R665 G BOARD POWER R699 Q648 L=ON R621 Q653/B D614 FROM R626 LATCH CN641/11 R620...

  • Page 23: Secondary Voltages

    This IC outputs 9.6 volts to L652 and also to CN641/6 and 7. The voltage Secondary Voltages is 9.6 instead of 9 because D647 is connected between the ground pin of IC641 9-Volt Regulator and ground. +135 Volts +9 Volt Protection The signal from the winding of T605/10 and 11 is applied across D643 The +9 volt line also is monitored for OCP.
  • Page 24 TO B+ OCP R661 TO Q651/E IC643 D643 TO D653 OCP REGULATION C697 C696 R652 L642 C698 C695 FROM D648 C653 C615 C643 EZO150AV1 CONVERTER R660 TO RY601 DEGAUSS D652 IC650 A BD. FROM BA12T T601/1 CN641 C661 C658 12V REG D651 Q650 TO D605...
  • Page 25 Flyback Secondary Voltages Distribution The following voltages are scan derived. This means that some windings of the flyback transformer have their signals rectified to create additional power supply lines: 200 Volts C Board IC1701 CRT Amp +12 Volts A Board IC501 Pin Control, IC561 V Out -15 Volts IC501 Pin Control, IC561 V Out, Q511 Pin Drive, WA Board PART OF T503...
  • Page 26 TO B+ OCP R661 TO Q651/E IC643 D643 TO D653 OCP REGULATION C697 C696 R652 L642 C698 C695 FROM D648 C653 C615 C643 EZO150AV1 CONVERTER R660 TO RY601 DEGAUSS D652 IC650 A BD. FROM BA12T T601/1 CN641 C661 C658 12V REG D651 Q650 TO D605...
  • Page 27 The table below describes various symptoms that can occur if there is a The Stereo LED can only be used as an indicator if the set is in Tuner short on one of the power supply lines. These types of problems occur Mode.
  • Page 28 TO B+ OCP R661 TO Q651/E IC643 D643 TO D653 OCP REGULATION C697 C696 R652 L642 C698 C695 FROM D648 C653 C615 C643 EZO150AV1 CONVERTER R660 TO RY601 DEGAUSS D652 IC650 A BD. FROM BA12T T601/1 CN641 C661 C658 12V REG D651 Q650 TO D605...

  • Page 29: Power Supply Protection

    Foldback Power Supply Protection The foldback circuit is a type of protection circuit that uses a winding on T605 PIT to monitor the current drawn by its secondary. This voltage is Overview rectified and called Vcc Rect. Q624 is setup with the Vcc Rectifier voltage There are three different circuits that can activate the protection latch.
  • Page 30 TO CN641/1 R652 135V D648 EZO150AVI R653 D653 UNREG +12V C656 R654 R606 C614 Q651 PART OF VCC RECT. Q623 D604 T605PIT R601 D603 R604 R663 R655 R662 D608 D607 RD6.8ESB2 RD6.8ESB2 R602 R605 C618 NORMALLY TO Q648 POWER ON POWER ON FROM CN641/11...

  • Page 31: Appendix

    APPENDIX...

  • Page 32: Vertical Deflection

    These pulses keep Q652 ON and prevents C563 from charging. There- Vertical Deflection fore Q561 is always OFF while the set is operating normally. If the verti- cal flyback pulses were missing, the voltage from the 12-volt line through The vertical deflection stage consists of the Vertical oscillator, Vertical R570 would forward bias Q561 B-E.
  • Page 33 TO WA BOARD D388 MTZJ11B +12V SCAN CN942 C565 D561 DERIVED +12V SUPPLY D531 R537 CN1942 C564 FROM T503/8 Q561 R570 Q562 R573 R571 C563 R572 TO IC355/15 VM OUT/ IC561 V PROTECT STV9379 VERT.OUT FLYBACK GENERATOR R569 R384 R568 R387 R561 IC355...

  • Page 34: Horizontal Deflection Block

    The purpose of the pincushion circuit is to correct for deflection distortion, Horizontal Deflection Block which occurs because of the yoke’s inability to create a linear beam scan. The result would be a picture bowed at the sides. We compensate for this Overview problem by using pincushion correction circuits to control the amount of current that can flow through the horizontal output’s return.
  • Page 35 Q501 Q501 T503 H OUT H DRIVE FLYBACK SCAN +200 DERIVED Y/C/J SUPPLIES IC355 E/W DRIVE Q512 PIN AMP CENTERING LINEARITY HP/H OFF H PROTECT HORIZONTAL DEFLECTION BLOCK 14CTV26 01/01/00...

  • Page 36: Horizontal Out

    Horizontal Output Horizontal Out Q502 is the H output transistor and it drives two circuits: • The deflection yoke – Develops a magnetic field in order to move the Overview electron beam from left to right on the screen. The horizontal output circuit below consists of the Horizontal Oscillator, •...
  • Page 37 135V R385 MAIN R504 R383 T503 1/2 R552 FLYBACK T501 TO 2nd. IC355 R539 Q502 ANODE CXA2131S R513 Y/C/J C507 C502 D502 C509 Q501 R507 R501 200V C554 D503 C527 TO C R503 C503 BOARD C510 C505 R502 C511 FROM C504 135V Q512...

  • Page 38: Pincushion

    This signal is then applied to the base of Q511 Pin Out. The signal is Pincushion inverted by Q511 and then input to the base of Q512. The result is that a PWM waveform is seen at Q512/C. Q512/C is connected to the return for Overview the horizontal output.
  • Page 39 TO Q504 FROM T503/11 NECK PROTECT FROM IC355/11 +135V R540 C520 R506 R515 FROM C510 R581 MAIN HP C521 C519 R526 TO H D536 D535 R523 R327 D515 L511 R524 C525 DWG. C522 C528 R517 R516 R525 R518 R519 Q512 D516 Q511 IC501...
  • Page 40 IC261 AV SW CN271 TU102 DET OUT 2 CN264 IC3504 UX BD. COMB FILTER CN264 CN271 IC353 IC352 IC354 YUV SW YUV SW A BOARD CN1761 C BOARD IC355 Y/C/J CN351 TUNER MODE VIDEO SIGNAL PATH 20CTV28 1290 ?¶?¶0/00...
  • Page 41 Sony Service Company A Division of Sony Electronics Inc ©2000 All Rights Reserved Printed in U.S.A. S is a trademark of Sony Electronics SEL Service Company A Division of Sony Electronics Inc. 1 Sony Drive Park Ridge, New Jersey 07656 CTV281100 Printed in U.S.A.

This manual is also suitable for:

Kv-36fs16Kv-32fv26Kv-36fv16Kv-36fs12Kv-36fv26

Table of Contents