Sony Trinitron KV-J25MF8J Service Manual
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Sony Trinitron KV-J25MF8J Service Manual

Sony Trinitron KV-J25MF8J Service Manual

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SERVICE MANUAL

MODEL
COMMANDER DEST. CHASSIS NO.
KV-J25MF8J
RM-873
MODEL
KV-J29MF8J
ME
SCC-K57P-A
TRINITRON
BG-1L
CHASSIS
COMMANDER DEST. CHASSIS NO.
RM-873
ME
COLOR TV
®
SCC-K57N-A

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Summary of Contents for Sony Trinitron KV-J25MF8J

  • Page 1: Service Manual

    SERVICE MANUAL BG-1L CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-J25MF8J KV-J29MF8J RM-873 SCC-K57P-A RM-873 SCC-K57N-A TRINITRON COLOR TV ®...
  • Page 2 SHIELD, OR CARBON PAINTED ON THE CRT, AFTER IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REMOVING THE ANODE. REPLACE 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

    TABLE OF CONTENTS Section Title Page Section Title Page 6. DIAGRAMS 1. GENERAL ................ 4 6-1. Block Diagram ............29 2. DISASSEMBLY 6-2. Frame Schematic Diagram ........31 Circuit Boards Location .......... 34 2-1. Rear Cover Removal ..........11 6-4. Schematic Diagrams and Printed Wiring Boards ..

  • Page 4: General

    SECTION 1 The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the GENERAL Operating Instruction Manual remain as in the manual.

  • Page 11: Disassembly

    SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL 2-2. SPEAKER REMOVAL 2 Rear cover 1Two screws (+BVTP4x16) 1Two screws (+BVTP4 x16) 1Six screws 3Speaker (5cm) (+BVTP4x16) [KV-J29MF8J] 2Bracket (R) assy,sp 1Two screws (+BVTP4x16) 2-3. CHASSIS ASSY REMOVAL 2Chassis assy 1Two claws –...

  • Page 12: Service Position

    2-4. SERVICE POSITION 1PCB holder 2Chassis assy When measuring the power supply voltage, just remove a part of bracket shown below. Cut the four marked sections ATTENTION with a nippers to remove a For safety reason this plate part of bracket. must be remounted after cutting and taking away.

  • Page 13: F1 And H3 Boards Removal

    8 H3 Board 6 connector 3 F1 Board 1 Two connector 7 Two claws 2 Two claws 9 Two DGC band [KV-J25MF8J] 2-8. PICTURE TUBE REOVAL 0 Two DGC holder 6 C2 Board 0 Two DGC holder [KV-J29MF8J] ! DGC clip [KV-J29MF8J]...
  • Page 14 • REMOVAL OF ANODE-CAP • HOW TO HANDLE AN ANODE-CAP 1 Don't hurt the surface of anode-caps with sharp shaped material! NOTE : Short circuit the anode of the picture tube and the anode cap 2 Don't press the rubber hardly not to hurt inside of anode- to the metal chassis, CRT shield or carbon paint on the CRT, caps! A material fitting called as shatter-hook terminal after removing the anode.

  • Page 15: Set-Up Adjustments

    SECTION 3 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. 1. Beam Landing • These adjustments should be performed with rated power 2.

  • Page 16: Convergence

    • 3-2. CONVERGENCE Tilt the V.STAT magnet and adjust the static convergence by opening or closing the V.STAT magnet. Preparations : • If the V.STAT magnet is moved in the direction of the a and Before starting this adjustment, adjust the focus, horizontal size b arrows, the red, green, and blue points move as shown and vertical size.
  • Page 17 • • Use the H.STAT VR to adjust the red, green, and blue dots so Operation of BMC (Hexapole) Magnet that they coincide at the center of screen. If the red, green and blue dots are not balanced or aligned, then The respective dot position resulting from moving each use the BMC magnet to adjust in the manner described below.
  • Page 18 (2) Dynamic Convergence Adjustment Preparation: • 3. Move the deflection yoke as shown in the figure below and Before starting this adjustment, adjust the horizontal static optimize the convergence. convergence and the vertical static convergence 4. Tighten the deflection yoke screws. 1.

  • Page 19: Focus Adjustment

    d. MEMORY WRITE CONFIRMATION METHOD 3-3. FOCUS ADJUSTMENT 1) After adjustment, pull out the plug from AC outlet, and then Adjust FOCUS control on the flyback transformer for the best plug into AC outlet again. focus. 2) Turn the power switch ON and set to Service Mode. 3) Call the adjusted items again to confirm adjustments were made.

  • Page 20: G2 (Screen) And White Balance Adjustments

    3-4. G2 (SCREEN) AND WHITE BALANCE ADJUSTMENTS 3. SUB BRIGHT ADJUSTMENT 1. G2 (SCREEN) ADJUSTMENT (RV701) 1) Set the PICTURE and BRIGHTNESS to normal. 1) Set to service mode. 2) Input a staircase signal of black and white from the pattern 2) Put to VIDEO input mode without signals.

  • Page 21: Self Diagnosis Function

    SECTION 4 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. The flickering frequuncy responding to each failed device is shown below.

  • Page 22: Circuit Adjustment

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

  • Page 23: Adjustment Method

    5-2. ADJUSTMENT METHOD Item Number 00 Use the same method for Items Number 00-96. Use 1 and 4 to This explanation uses V-Position as an example. select the adjustment item, use 3 and 6 to adjust, write with 1. Select 00 VSH with the 1 and 4 buttons. 2.
  • Page 24 Adjustment Item Table Standard data Item Adjustment Data Note Device number Item range 00-3F V Position CXA2050S 00-3F V Size (Y/C/J) 00-0F H Position Slv:88H 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 25 Adjustment Item Table Standard data Item Adjustment Data Note Device number Item range 00-3F B-Drive CXA2050S 00-0F G-Cutoff (Y/C/J) 00-0F B-Cutoff Slv:88H 00-03 Ref-Position 00-01 Pic-ON 00-01 R ON 00-01 G ON 00-01 B ON 00-01 00-01 00-01 00-01 Picture Booster 00-01 Black Offset 00-01...
  • Page 26 Adjustment Item Table Standard data Item Adjustment Data Note Device number Item range 00-01 Wipe on/off SDA9189X 00-03 Wipe Speed (PinP) Slv:D6H 00-FF NICAM FAW Thresh MSP3410 00-FF NICAM Error Bit(MONO) (Stereo Decoder) 00-FF NICAM Error Bit(NICAM) Slv:80H 00-FF W.G.DATA CHANGE 00-FF W.G.STEREO Threshold 00-FF...

  • Page 27: Picture Quality Adjustment

    SUB HUE ADJUSTMENT (SHU) 5-5. A BOARD ADJUSTMENT AFTER IC003 5-6. PICTURE DISTORTION ADJUSTMENT 5-3. PICTURE QUALITY ADJUSTMENTS 1. select Video1 (MEMORY) REPLACEMENT Item Number 00 – 0B Item Number 33-36 VSH(V POSITION) 2. Input a NTSC color-bar, video into video1. 33 SCO Sub-Color 3.

  • Page 28: Diagrams

    SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM H3(2/3) (AV INPUT) (RGB OUT) MAIN TUNER,VIF,SIF AV SW Y/C DECODE JUNGLE CN117 CN703 Q712 Q706 Q703 29 inch ONLY (FRONT) VIDEO VIDEO MONITOR RV702 VIDEO 3 INPUT R DRIVE R AMP R OUT H.

  • Page 29: Frame Schematic Diagram

    6-2. CIRCUIT BOARDS LOCATION 6-2. FRAME SCHEMATIC DIAGRAM Terminal name of semiconductors in silk screen printed circuit ( Device Printed symbol Terminal name Circuit CN527 CN1690 CN1691 CN2600 Collector Transistor AC OUT AC IN Base Emitter CN518 (AC IN) Collector Transistor Base Emitter...

  • Page 30: Schematic Diagrams Of D, F1 And H3 Boards

    (5) Schematic Diagram of VM Board ∗ VM BOARD MARK LIST KV-J25MF8J KV-J29MF8J NECK ASSY C965 0.0022 50V C966 0.0022 50V C967 10 50V TO D BOARD C971 1 50V CN518 C983 0.082 50V D965 CN962 4P WHT : S-MICRO...
  • Page 31 POWER SUPPLY, DEFLECTION AC IN CONTROL SW, INPUT TERMINAL D BOARD – D Board – D616 D–5 D617 C–5 D618 G–1 – F Board – IC601 C–5 D619 G–10 D621 C–5 IC602 E–3 D633 E–2 IC603 E–5 D801 D–8 IC1501 D–8 D803 F–4...
  • Page 32 Boards CN518 H.DY H.DY V.DY V.DY D BOARD WAVEFORMS D BOARD MARK LIST CN506 TO VM BOARD CN961 4 - 8 PIN KV-J25MF8J KV-J29MF8J :BRIDGE(R) C818 0.047 630V : PP TO A BOARD R1523 CN109 C1800 10 50V Q1502 X-RAY...
  • Page 33 R181 R182 :CHIP 0.15 0.0022 0.15 :CHIP RIPPLE 10µH :EL0606 C084 0.01 :CHIP IC201 AUDIO(L/R) C260 :MPS :CHIP :MPS KV-J25MF8J KV-J29MF8J C080 0.01 B:CHIP JR206 R217 :CHIP :CHIP 0.022 FILTER TO D BOARD PQ09RF2 C249 R254 0.01 B:CHIP B:CHIP C103 0.047 50V : CHIP...
  • Page 34 MAIN TUNER,VIF, VIS AV SW Y/C DECORDE JUNGLE – A Board – A BOARD DIODE IC001 B–9 D001 C–8 - IC002 C–8 D002 C–103 IC003 C–9 D005 E–8 - IC102 D–10 D101 A–7 - IC104 C–5 D102 A–7 - IC201 D–9 A–3 3 D103...

  • Page 35: Schematic Diagram Of S1 Board

    (3) Schematic Diagram of S1 Board AUDIO EFFECT – S1 Board – C2252 C2256 R2289 0.47 16V B:CHIP C2253 R2234 R2232 :CHIP 4.3k 6.8k R2231 :CHIP :CHIP 1.5k :CHIP C2250 0.0047 R2290 B:CHIP R2237 6.8k R2228 R2230 :CHIP R2227 :CHIP 3.9k 110k :CHIP...

  • Page 36: Schematic Diagram Of C2 Board

    R743 D720 1SS119 PROTECT ∗ C711 C2 BOARD5 MARK LIST D721 R744 R735 1SS119 PROTECT KV-J25MF8J KV-J29MF8J R745 C726 J701 1-251-239-11 SOCKET. CRT 1-526-990-22 SOCKET. CRT RV702 110M # Mark : not mounted B-SS6667<ME.>-C2. – 53 – – 54 –...

  • Page 37: Semiconductors

    6-5. SEMICONDUCTORS DIODE TRANSISTOR 2SC2611 D1NL20 MA111 SPB-26MVWF CXA1315M-T4 SBX1981-11 DTA114EK 2SC2688-LK 1SS355 NJM2178M-T2 RGP10GPKG23 DTA144EK 2SC3601 EL1Z NJM4558M-T2 DTA144EKA D219 GP08D TDA8395T DTC114EK RD5.1ES DTC124EK RGP02-17EL-6433 DTC144EK RGP02-20EL 2SA1162G 2SC1623-L5L6 2SC2712-YG-TE85 SE135N 2SD601A-Q MC932 5P-6M CXA1855S CXA2050S 2SC4927-01 CXA85332A-073S CXP85332A-206S DTC114ES D4SB60L...

  • Page 38: Exploded Views

    SECTION 7 EXPLODED VIEWS The components identified by ¡ shading and mark are criti- NOTE: • The construction parts of an assembled cal for safety. Replace only with part number part are indicated with a collation number • Items with no part number and no specified.

  • Page 39: Chassis

    The components identified by ¡ shading and mark are criti- 7-2. CHASSIS cal for safety. Replace only with part number specified. : 7-685-648-79 +BVTP 3X12 REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK ------------ ------------- ------------------- ------------- ------------ -------------...

  • Page 40: Electrical Parts List

    1-216-295-91 SHORT * A-1298-389-A A BOARD, COMPLETE (KV-J29MF8J) C046 1-163-251-11 CERAMIC CHIP 100PF ********************* C048 1-163-251-11 CERAMIC CHIP 100PF * A-1298-390-A A BOARD, COMPLETE (KV-J25MF8J) C049 1-163-251-11 CERAMIC CHIP 100PF ********************* C050 1-163-251-11 CERAMIC CHIP 100PF C051 1-163-251-11 CERAMIC CHIP 100PF...
  • Page 41 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. Ne les remplacer que par une Replace only with part number piece portant le numero specifie. specified.
  • Page 42 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- cal for safety. sont critiques pour la securite. Replace only with part number Ne les remplacer que par une piece portant le numero specifie. specified.
  • Page 43 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. Ne les remplacer que par une Replace only with part number piece portant le numero specifie. specified.
  • Page 44 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- cal for safety. sont critiques pour la securite. Replace only with part number Ne les remplacer que par une piece portant le numero specifie. specified.
  • Page 45 8-729-119-78 TRANSISTOR 2SC2785-HFE Q712 8-729-119-78 TRANSISTOR 2SC2785-HFE * A-1331-604-A C2 BOARD, COMPLETE (KV-J29MF8J) Q713 8-729-200-17 TRANSISTOR 2SA1091-O ********************** Q714 8-729-255-12 TRANSISTOR 2SC2551-O * A-1331-625-A C2 BOARD, COMPLETE (KV-J25MF8J) ********************** <RESISTOR> 7-682-948-01 SCREW +PSW 3X8 R701 1-244-941-00 CARBON 680K 1/2W R702...
  • Page 46 1-249-383-11 CARBON 1/4W * A-1342-393-A VM BOARD, COMPLETE (KV-J29MF8J) R970 1-249-403-11 CARBON 1/4W *********************** R971 1-247-815-91 CARBON 1/4W * A-1342-394-A VM BOARD, COMPLETE (KV-J25MF8J) R972 1-249-432-11 CARBON 1/4W *********************** R973 1-249-403-11 CARBON 1/4W R974 1-216-476-11 METAL OXIDE 180 4-382-854-11 SCREW (M3X10), P, SW (+)
  • Page 47 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. Ne les remplacer que par une Replace only with part number piece portant le numero specifie. specified.
  • Page 48 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- cal for safety. sont critiques pour la securite. Replace only with part number Ne les remplacer que par une piece portant le numero specifie. specified.
  • Page 49 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. Ne les remplacer que par une Replace only with part number piece portant le numero specifie. specified.
  • Page 50 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. (d)(h3) Ne les remplacer que par une Replace only with part number specified.
  • Page 51 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- sont critiques pour la securite. cal for safety. (h3)(s1) Ne les remplacer que par une Replace only with part number piece portant le numero specifie.
  • Page 52 Les composants identifies par The components identified by ¡ ¡ une trame et une marque shading and mark are criti- cal for safety. sont critiques pour la securite. (s1) Replace only with part number Ne les remplacer que par une piece portant le numero specifie.

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Trinitron kv-j29mf8j

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