Sony TRINITRON KV-LX34M50 Service Manual
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Sony TRINITRON KV-LX34M50 Service Manual

Sony TRINITRON KV-LX34M50 Service Manual

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SERVICE MANUAL

MODEL
COMMANDER DEST. CHASSIS NO.
KV-LX34M50
RM-871
MODEL
IndonesiaSCC-K67D-A
BG-1L
COMMANDER DEST. CHASSIS NO.
TRINITRON
CHASSIS
COLOR TV
®

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Summary of Contents for Sony TRINITRON KV-LX34M50

  • Page 1: Service Manual

    SERVICE MANUAL BG-1L CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-LX34M50 RM-871 IndonesiaSCC-K67D-A 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

    KV-LX34M50 RM-871 TABLE OF CONTENTS Section Title Page Section Title Page 1. GENERAL ............6. DIAGRAMS 6-1. Block Diagram ............35 2. DISASSEMBLY 6-2. Frame Schematic Diagram ........37 2-1. 3D Speaker Box Removal ........15 Circuit Boards Location .......... 40 2-2.

  • 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 this manual. Getting Started Connections Front of TV Camcorder to video and audio outputs (MONO) Connecting a VHF antenna or a combination VHF/UHF antenna...
  • Page 5 Getting to know the Introducing the remote commander menus Names of buttons on the remote commander are indicated in different colors to represent the available functions. You can preset TV channels, adjust the picture and sound qualities, and select some settings using the on-screen menus.

  • Page 6: Presetting Channels

    Note Make sure the cursor (”) appears beside Presetting channels Changing the menu • If you want to return to the normal screen while the nine sub LANGUAGE/ , and press ENTER. screens are being displayed, you can press PROGR INDEX on language the remote commander.
  • Page 7 • The TV system and the ATT (attenuator) settings are memorized for each program position. VIDEO 1 VIDEO 2 VIDEO 3 • If you do not know your local TV system, consult your nearest -/-- Sony dealer or authorized service center. Operations Getting Started...
  • Page 8 To watch TV Setting the Sleep Timer Setting the Wake Up Timer Press ; on the remote commander or … on the TV. You can set the TV to turn off automatically after the You can set the TV to turn on automatically after the period of time you want.

  • Page 9: Adjusting The Picture And Sound

    If the picture is slightly snowy Press V/b/v/B to adjust the selected item, Adjusting the Adjusting the picture settings You may try to improve the picture by changing the and press ENTER. (VIDEO ADJUST) VM setting as described below: picture and sound For details on each item, see “Description of adjustable You can adjust the picture settings to suit your taste Display the VIDEO ADJUST menu.
  • Page 10 MENU well. Notes • The BBE is manufactured by Sony Corporation under license Press POWER BASSO. from BBE Sound, Inc. It is covered by U.S. Patent No. 4,638,258 and No. 4,482,866. The word “BBE” and the BBE symbol are ENTER the trademarks of BBE Sound, Inc.
  • Page 11 To restore the normal screen Viewing multiple Displaying frame- Using the Picture-in- Press PROGR INDEX again or You can also select PROGR INDEX or PIP : OFF from programs at the by-frame pictures Picture (PIP) the PIP menu, and press ENTER to restore the normal screen.
  • Page 12 To restore the normal picture and sound Viewing a video Changing the position of the PIP screen Swapping pictures between the main modes and PIP screens Press ;, … , or PROGR +/–. game screen MENU Press Notes (GAME MODE) •...
  • Page 13 If the problem persists, contact your nearest Sony You can select the output signal from the Ú dealer or authorized service center. (MONITOR/TV OUT) jacks at the rear of the TV.
  • Page 14 WARNING • Dangerously high voltages are present inside the TV. • Operate the TV only at 110-240 V AC. • Do not open the cabinet and the rear cover of the TV. Refer servicing to qualified personnel. • To prevent fire or shock hazard, do not expose the TV to rain or moisture.

  • Page 15: Disassembly

    SECTION 2 DISASSEMBLY 2-1. 3D SPEAKER BOX REMOVAL 2-3. SPEAKER REMOVAL Note: Remove 3D SPEAKER BOX before you remove REAR COVER. 3 Connector 1 Three screws (step hilo tapping) Speaker brock assy 2 3D speaker box Two screws (washer head) (+BVTP 4 ×...

  • Page 16: Service Position

    2-5. SERVICE POSITION 2-6. P1 BOARD REMOVAL 1Screw (Washer head) (+P 3×12) 3PCB holder One screw (washer head) (+P 3 × 12) 2One claw P1 Board PC board holder P1 Board Extension Board (3-702-715-01) Main bracket assy • Prepare the above extension board (3-702-715-01) for measurement.

  • Page 17: B3 And Df Boards Removal

    2-8. B3 AND DF BOARDS REMOVAL 2-10. H5 AND K BOARDS REMOVAL 1 B3 board 5 Three connectors 6 Two connectors 9 Screw (+BVTP 3 × 12) 4 Two flat cable " Three connectors ! H5 board 7 One connector # One connector 3 F1 board 1 Two connectors...

  • Page 18: Switch Block Removal

    2-13. PICTURE TUBE REMOVAL 2-12. SWITCH BLOCK REMOVAL 3 Switch block top 7 DGC with CRT shield 6 Two nuts (special CRT) 6 Two nuts (special CRT) 8 C1 board 5 Chassis assy 9 Neck assy ! Deflection yoke 4 Anode cap Two screws (waher head +P4 ×...
  • Page 19 • REMOVAL OF ANODE-CAP • HOW TO HANDLE AN ANODE-CAP 1 Do not damage the surface of anode-caps with sharp shaped objects. NOTE : After removing the anode, short circuit the anode of the picture tube and the 2 Do not press the rubber too hard so as not to damage the inside of anode-caps. anode cap to the metal chassis, CRT shield or carbon paint on the CRT.

  • Page 20: Self Diagnosis Function

    KV-LX34M50 SECTION 3 RM-871 SELF DIAGNOSIS FUNCTION When turning on the TV, a self diagnosis function is executed. 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. The flickering frequency responding to each failed device is shown below.

  • Page 21: Set-Up Adjustments

    KV-LX34M50 SECTION 4 RM-871 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 22: Convergence

    KV-LX34M50 RM-871 4-2. CONVERGENCE Preparation : • • Before starting this adjustment, adjust the focus, horizontal size Operation of V.STAT magnet. If the V.STAT magnet is moved in the direction of the a and and vertical size. • b arrows, the red, green and blue dots move as shown Minimize the brightness setting.
  • Page 23 KV-LX34M50 RM-871 • Blue Y separation axis correction magnet adjustment. Neck assy Neck assy 1. Receive the cross-hatch signal and adjust [PICTURE] to [MIN] and [BRIGHTNESS] to [STANDARD] . 2. Adjust the Y separation axis correction magnet on the neck assembly so that the horizontal lines at the top and bottom of Blue the screen are straight.

  • Page 24: Focus Adjustment

    KV-LX34M50 RM-871 (3) Screen-corner Convergence 4-4. G2 (SCREEN) AND WHITE BALANCE ADJUSTMENTS a. SOME ITEMS OF ADJUSTMENT Standard DATA Adjustment Item a-d : screen-corner Note misconvergence item 50Hz 60HZ number SUB- BRIGHTNESS G. Drive B. Drive G. Cut-off B. Cut-off Fix a Permalloy assy corresponding to the misconverged areas.
  • Page 25 KV-LX34M50 RM-871 e. MEMORY WRITE CONFIRMATION METHOD 2. WHITE BALANCE ADJUSTMENTS 1) After adjustment, pull out the plug from AC outlet, and then 1) Set to Service Mode. plug into AC outlet again. 2) Input white raster signal. 2) Turn the power switch ON and set to Service Mode. 3) Set the PICTURE to minimum.

  • Page 26: Circuit Adjustment

    KV-LX34M50 SECTION 5 RM-871 CIRCUIT ADJUSTMENTS 5-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-871 that comes with this unit. 1, 4 Select the adjustment item. ↓ 3, 6 Raise/lower the data value. Entering service mode ↓ With the unit on standby [MUTING] Writes.

  • Page 27: Adjustment Method

    KV-LX34M50 RM-871 5-2. ADJUSTMENT METHOD Item Number 00 Use the same method for Items Number 00-99. Use 1 and 4 to This explanation uses V-Position as an example. 1. Select 00 VSH with the 1 and 4 buttons. select the adjustment item, use 3 and 6 to adjust, write with 2.
  • Page 28 KV-LX34M50 RM-871 Adjustment Item Table Item Adjustment Data Standard Note Device number Item range data 00-3F V Position CXA2050S 00-3F V Size (Y/C/J) 00-0F H Position 00-3F H Size 00-0F S Correction 00-0F V Linearity 00-3F Pin Comp 00-0F Pin Phase 00-0F Up Corner Pin 00-0F...
  • Page 29 KV-LX34M50 RM-871 Adjustment Item Table Item Adjustment Data Standard Note Device number Item range data 00-0F B-Cutoff CXA2050S 00-03 Ref-Position (Y/C/J) 00-01 Pic-ON 00-01 R ON 00-01 G ON 00-01 B ON 00-01 AKB ON/OFF SW 00-01 Ext Sync Select 00-01 Aging Mode ON/OFF 00-01...
  • Page 30 KV-LX34M50 RM-871 Adjustment Item Table Item Adjustment Data Standard Note Device number Item range data 00-FF NICAM FAW Thresh MSP3410 00-FF NICAM Error Bit(MONO) (Audio Stereo 00-FF NICAM Error Bit(NICAM) Decoder) 00-FF W.G.Change Data 00-FF W.G.STEREO Threshold 00-FF W.G.Timer 00-FF W.G.BILINGUAL Threshold 00-01 AGC AUTO/CONST.
  • Page 31 KV-LX34M50 RM-871 ITEM INFORMATION. No.98 OP0 Item – – – – – – – Fastext KV-LX34M50 No.99 OP1 Item Wide Woofer Tilt Comb type Comb filter SECAM B/G only KV-LX34M50 • 98 OP0, 99 OP1 : 0 → Automatic mode, 1 → Fastext mode Fastext : 0 →...

  • Page 32: Picture Quality Adjustments

    KV-LX34M50 RM-871 5-3. PICTURE QUALITY ADJUSTMENTS SUB HUE ADJUSTMENT (SH1 & SH2) SUB CONTRAST ADJUSTMENT (SCN) 1. Receive a NTSC 3.58 color-bar. 2. Set the following condition: 1. Receive a PAL color-bar. PICTURE 100%, BRIGHTNESS 50%, COLOR 50%, HUE 0% 2.

  • Page 33: A Board Adjustment After Ic003 (Memory) Replacement

    KV-LX34M50 KV-LX34M50 RM-871 RM-871 5-5. A BOARD ADJUSTMENT AFTER IC003 5-6. PICTURE DISTORTION ADJUSTMENT MEMO ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○...

  • Page 34: Exploded Views

    KV-LX34M50 SECTION 7 RM-871 EXPLODED VIEWS NOTE: • • Items marked " ∗ " are not stocked since Items with no part number and no des- The components identified by they are seldom required for routine cription are not stocked because they shading and mark ! are critical are seldom required for routine service.

  • Page 35: Diagrams 6-1. Block Diagram

    KV-LX34M50 RM-871 7-2. CHASSIS 4 : +BVTP 3 × 12 7-685-648-79 REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK * A-1372-446-A H5 BOARD, COMPLETE 4-382-854-11 SCREW (M3X10), P, SW (+) 1-782-896-11 CABLE, FLAT * A-1298-501-A A BOARD, COMPLETE * A-1380-572-A K BOARD, COMPLETE 4-046-797-01 SCREW (3X12), (+)BVTAP...

  • Page 36: Speaker

    KV-LX34M50 RM-871 7-3. 3D SPEAKER ¢ : +BVTP 4 × 12 7-685-661-14 r : +BVTP 4 × 16 7-685-663-71 REF. NO. PART NO. DESCRIPTION REMARK X-4035-173-1 SP BOX(UPPER)(ASSY) * 4-061-013-01 SEAL, BOX 1-505-792-11 SPEAKER (16CM) 1-900-233-38 CONNECTOR ASSY 2P 4-061-009-01 SP BOX (LOWER) 4-061-007-01 FOOT...

  • Page 37: Frame Schematic Diagram

    KV-LX34M50 SECTION 8 RM-871 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 38 KV-LX34M50 RM-871 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 C109 1-163-017-00 CERAMIC CHIP 0.0047MF C211 1-107-823-11 CERAMIC CHIP 0.47MF C110 1-164-232-11...
  • Page 39 KV-LX34M50 RM-871 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 C1213 1-163-251-11 CERAMIC CHIP 100PF CN123 * 1-564-521-11 PLUG, CONNECTOR 6P C1214 1-163-009-11...

  • Page 40: Circuit Boards Location

    KV-LX34M50 RM-871 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 IC102 8-759-157-40 IC UPC574J <TRANSISTOR> IC104 8-752-076-87 IC CXA2050S IC201 8-759-095-63 IC PQ09RF2...
  • Page 41 KV-LX34M50 RM-871 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 1-216-065-91 RES,CHIP 4.7K 1/10W R122 1-216-033-00 RES,CHIP 1/10W R030 1-216-097-91...
  • Page 42 KV-LX34M50 RM-871 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 R203 1-216-073-00 RES,CHIP 1/10W R1220 1-216-025-91 RES,CHIP 1/10W R205 1-216-053-00 RES,CHIP...
  • Page 43 KV-LX34M50 RM-871 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 R1286 1-216-063-91 RES,CHIP 3.9K 1/10W C3321 1-126-967-11 ELECT 47MF R1287 1-216-057-00...
  • Page 44 KV-LX34M50 RM-871 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 <CHIP CONDUCTOR> R3327 1-216-041-00 RES,CHIP 1/10W R3328 1-216-033-00 RES,CHIP 1/10W JR3303...
  • Page 45 KV-LX34M50 RM-871 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 R3398 1-216-085-00 RES,CHIP 1/10W C711 1-107-651-11 ELECT 4.7MF 250V R3399 1-216-073-00...
  • Page 46 KV-LX34M50 RM-871 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 R707 1-215-422-00 METAL 1.1K 1/4W C622 ! 1-113-900-51 CERAMIC 470PF 250V...
  • Page 47 KV-LX34M50 RM-871 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 C2518 1-162-116-00 CERAMIC 680PF D606 8-719-302-43 DIODE EL1Z C2519 1-136-897-11 FILM...
  • Page 48 KV-LX34M50 RM-871 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 FB605 1-410-397-21 FERRITE 1.1UH <RESISTOR> FB607 1-410-397-21 FERRITE 1.1UH FB2501 1-410-397-21 FERRITE...

  • Page 49: Schematic Diagrams Of D, F1, H5 And H6 Boards . 45 (2) Schematic Diagram Of A Board

    KV-LX34M50 RM-871 The components identified by shading and mark ! are critical for safety. D DF Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK R1513 1-215-405-00 METAL 1/4W R2582 1-249-417-11 CARBON 1/4W R1514...
  • Page 50 KV-LX34M50 RM-871 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 C2806 1-104-664-11 ELECT 47MF <RESISTOR> C2807 1-124-907-11 ELECT 10MF C2808 1-124-907-11...
  • Page 51 KV-LX34M50 RM-871 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 <FUSE> R902 1-249-413-11 CARBON 1/4W R904 1-249-417-11 CARBON 1/4W F1690 ! 1-532-350-11 FUSE, TIME-LAG 4A/250V...
  • Page 52 KV-LX34M50 RM-871 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 * A-1380-572-A K BOARD, COMPLETE R3203 1-249-417-11 CARBON 1/4W ********************* R3204...
  • Page 53 KV-LX34M50 RM-871 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 C1428 1-163-038-91 CERAMIC CHIP 0.1MF <FILTER> C1429 1-104-665-11 ELECT 100MF C1431...
  • Page 54 KV-LX34M50 RM-871 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 <RESISTOR> R1478 1-216-047-91 RES,CHIP 1/10W R1479 1-208-780-11 RES,CHIP 0.50% 1/10W R1401 1-216-073-00...
  • Page 55 KV-LX34M50 RM-871 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 <COIL> C2238 1-126-960-11 ELECT C2248 1-164-346-11 CERAMIC CHIP L2400 1-408-603-31 INDUCTOR...
  • Page 56 KV-LX34M50 RM-871 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 R2204 1-216-025-91 RES,CHIP 1/10W C969 1-107-949-11 ELECT 2.2MF 160V R2205 1-216-025-91...

  • Page 57: Schematic Diagrams Of B3, P1, P2 And Vm Boards

    CABLE, FLAT 8-451-482-31 DEFLECTION YOKE (Y34FXA2-S) ! 8-733-746-05 PICTURE TUBE (A80JYV51X) **************************************************************************** REMOTE COMMANDER **************************************************************************** ********************** 1-473-978-21 REMOTE COMMANDER (RM-871) Sony Corporation English 98BM70029-1 Display Company Printed in Malaysia © 9-965-674-01 TV Display Business Asia 1998. 2 – 92 –...

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