Sony Trinitron KV-XF25M50 Service Manual
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Sony Trinitron KV-XF25M50 Service Manual

Sony Trinitron KV-XF25M50 Service Manual

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Self Diagnosis
Supported model

SERVICE MANUAL

BG-3S
CHASSIS
MODEL
COMMANDER DEST. CHASSIS NO.
MODEL
COMMANDER DEST. CHASSIS NO.
KV-XF25M50
RM-954
indonesia SCC-U20L-A
TRINITRON
COLOR TV
®

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Summary of Contents for Sony Trinitron KV-XF25M50

  • Page 1: Service Manual

    Self Diagnosis Supported model SERVICE MANUAL BG-3S CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-XF25M50 RM-954 indonesia SCC-U20L-A TRINITRON COLOR TV ®...
  • Page 2 PAR TS LIST ARE CRITICAL TO SAFE OPERA TION. REPLA CE ANODE. THESE COMPONENTS WITH SONY P AR TS WHOSE P AR T NUMBERS APPEAR AS SHO WN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY – 2 –...

  • Page 3: Table Of Contents

    KV-XF25M50 RM-954 TABLE OF CONTENTS Section Title Page Section Title Page SELF DIAGNOSIS FUNCTION 5. DIAGRAMS ........ 4 5-1. Block Diagram ............43 1. GENERAL ................ 8 5-2. Frame Schematic Diagram ........46 Circuit Boards Location .......... 49 2. DISASSEMBLY 5-4.

  • Page 4: Self Diagnosis Function

    KV-XF25M50 RM-954 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 KV-XF25M50 RM-954 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-XF25M50 RM-954 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-XF25M50 RM-954 SELF-DIAGNOSTIC CIRCUIT IC301 IC001 IC003 Y/CHROMA JUNGLE SYSTEM MEMORY FROM IK-IN IO-8DAT B-DAT FROM O-LED [+B] Q604 C 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 The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual. WOOFER (8Ω) AUDIO VIDEO VIDEO IN VIDEO OUT...
  • Page 9 PROGR ONE-PUSH AUTOMATIC PROGRAMMING AUTO PROGR ONE-PUSH AUTOMATIC PROGRAMMING...
  • Page 10 SOUND MODE SURROUND FAVORITE PIC MODE MENU ENTER...
  • Page 11 MENU ENTER ENTER ENTER...
  • Page 12 SOUND MODE SURROUND FAVORITE PIC MODE MENU ENTER SOUND SURROUND FAVORITE MODE MENU PIC MODE ENTER...
  • Page 13 SOUND MODE SURROUND FAVORITE PIC MODE MENU ENTER...
  • Page 14 SOUND SOUND MODE SURROUND FAVORITE MODE SURROUND FAVORITE PIC MODE MENU PIC MODE MENU ENTER ENTER MENU ENTER ENTER ENTER ENTER PROGR ONE-PUSH AUTOMATIC PROGRAMMING...
  • Page 15 ENTER SOUND SURROUND FAVORITE MODE MENU PIC MODE ENTER ENTER ENTER ENTER ENTER ENTER...
  • Page 16 ENTER ENTER ENTER ENTER ENTER ENTER ENTER...
  • Page 17 SOUND MODE SURROUND FAVORITE MENU PIC MODE ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER ENTER...
  • Page 18 ENTER ENTER ENTER ENTER ENTER...
  • Page 21 SOUND SOUND MODE SURROUND FAVORITE MODE SURROUND FAVORITE PIC MODE MENU MENU PIC MODE ENTER ENTER PROGR ONE-PUSH AUTOMATIC PROGRAMMING...

  • Page 26: Set-Up Adjustments

    KV-XF25M50 SECTION 3 RM-954 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 27: Convergence

    KV-XF25M50 RM-954 3-2. CONVERGENCE Preparation : • Before starting this adjustment, adjust the focus, horizontal size Purity and vertical size. • Minimize the brightness setting. BMC (Hexapole) • Provide dot pattern. Purity (1) Horizontal and Vertical Static Convergence Center dot V.
  • Page 28 KV-XF25M50 RM-954 Blue BMC (Hexapole) Magnet. Neck assy Neck assy If the red, green and blue dots are not balanced or aligned, then use the BMC magnet to adjust in the manner described below. Blue VM1 board VM1 board Note 1.

  • Page 29: Focus Adjustment

    KV-XF25M50 RM-954 Rotate TLV-2 VOL (29”, 34”) on DY 3-3. FOCUS ADJUSTMENT Rotate TLV VOL (25”) on DY Adjust FOCUS control on the flyback transformer for the best XCV Rotate XCV Adj core on DY focus. YCH Rotate YCH VOL on DY Insert Correction Plate to DY Pocket (Left or Right)

  • Page 30: G2 (Screen) And White Balance Adjustments

    KV-XF25M50 RM-954 2. WHITE BALANCE ADJUSTMENT 3-4. G2 (SCREEN) AND WHITE BALANCE 1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS ADJUSTMENTS WITH COMMANDER). 1. G2 (SCREEN) ADJUSTMENT 2) Input white raster signal. 1) Set the PICTURE to normal. 3) Set the PICTURE to minimum. 2) Put to VIDEO input mode without signals.

  • Page 31: Circuit Adjustment

    KV-XF25M50 SECTION 4 RM-954 CIRCUIT ADJUSTMENTS 4-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-954 that comes with this unit. 1, 4 Select the adjustment item. ↓ a. ENTERING SERVICE MODE 3, 6 Raise/lower the data value. With the unit on standby ↓...

  • Page 32: Adjustment Method

    KV-XF25M50 RM-954 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 36 KV-XF25M50 RM-954 ITEM INFORMATION. No. OPB0 OP1 XTAL 4.43 XTAL 3.58 SECAM 2nd. Lang Item KV-XF25M50 No. OPB1 OP2 Item NICAM HDEV Thai Bil – DVD input AV Input KV-XF25M50 No. OPB2 OP3 Item – 2199 Curve Auto PIC Auto TV sys US ST AV Mono 11 KEY...

  • Page 37: Picture Quality Adjustments

    KV-XF25M50 RM-954 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 38: Picture Distortion Adjustment

    KV-XF25M50 RM-954 4-5. PICTURE DISTORTION ADJUSTMENT (1) PICTURE DISTORTION ADJUSTMENT (2) Item Number 00 – 0B H-TRAPEZOID (Rotate RV1801) GEO 0 HSH (H POSITION) GEO 1 HSZ (H SIZE) GEO 2 PAP (PIN AMP) GEO 3 TILT (TRAPEZIUM) GEO 4 VSH (V POSITION) GEO 5 VSZ (V SIZE)

  • Page 39: Diagrams

    KV-XF25M50 KV-XF25M50 KV-XF25M50 SECTION 5 RM-954 RM-954 RM-954 DIAGRAM 5-1. BLOCK DIAGRAM MAIN. TUVIF TRU Surround AUDIO PROCESSOR L1 out TV V in AV SW TU101 IC3201 IC3206 IC3207 TDA7315D R1 out BTF-LG433 TV L in IC1401 NJM2187L NJM2150D <slave:80H> <slave: C0H>...

  • Page 40: Frame Schematic Diagram

    KV-XF25M50 KV-XF25M50 KV-XF25M50 RM-954 RM-954 RM-954 5-2. FRAME SCHEMATIC DIAGRAM CN5901 CN704 CN701 200V CN1801 VM MUTE PICTURE VD+ OUT CN703 (COMB FILTER) TUBE VD- OUT (RGB OUT) VELOCITY MODULATION N/S ROT N/S MUTE NECK ASSY DY ASSY CN507 (POWER SUPPLY, HV, MICON, Y/C JUNGLE) (CISPR) NS ROT NS MUTE...

  • Page 41: Circuit Boards Location

    KV-XF25M50 KV-XF25M50 RM-954 RM-954 5-3. CIRCUIT BOARDS LOCATION 5-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS Note: • All capacitors are in µF unless otherwise noted. • All electrolytic capacitors are rated at 50V unless otherwise noted. • All resistors are in ohms. kΩ...
  • Page 42 KV-XF25M50 KV-XF25M50 RM-954 RM-954 A BOARD [POWER SUPPLY, HV, MICON, Y/C JUNGLE] D004 D614 D005 D615 PRINTED WIRING BOARD IC001 B-10 D006 D616 IC002 D203 C-11 D617 IC003 D300 D618 IC100 – A Board – D301 D620 IC201 B-11 D302 D621 IC203 D303...
  • Page 43 KV-XF25M50 KV-XF25M50 KV-XF25M50 RM-954 RM-954 RM-954 [AUDIO PROCESSOR, SUB TUNER, AV SWITCH] PRINTED WIRING BOARD – B Board – B3 BOARD IC3201 NJM2187L Lch out h in BYPASS FIL 1 3D–STEREO ch in Rch out SPACE VR 3D–STEREO BYPASS CENTER VR FIL 2 –...
  • Page 44 KV-XF25M50 KV-XF25M50 KV-XF25M50 RM-954 RM-954 RM-954 – 70 – – 71 – – 72 –...
  • Page 45 Replace only with part number specified. REF. NO. PART NO. DESCRIPTION REMARK REF. NO. PART NO. DESCRIPTION REMARK Sony Corporation English 99GM70029-1 SONY TV Industries (M) Sdn. Bhd. Printed in Malaysia  9-965-752-01 TV Business of General Area 1999. 7 – 96 –...

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