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Sony KL-37W2U Service Manual
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Sony KL-37W2U Service Manual

Sony KL-37W2U Service Manual

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SERVICE MANUAL

LE-1
CHASSIS
MODEL
MODEL
COMMANDER
DEST.
COMMANDER
DEST.
KL-37W2U
RM-838
UK
TRINITRON
COLOR TV
MICROFILM
®
∗ Please file according to model size. ....
37

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Summary of Contents for Sony KL-37W2U

  • Page 1: Service Manual

    SERVICE MANUAL LE-1 CHASSIS MODEL MODEL COMMANDER DEST. COMMANDER DEST. KL-37W2U RM-838 TRINITRON COLOR TV MICROFILM ® ∗ Please file according to model size..

  • Page 2: Specifications

    Specifications This product complies with the EU Directive 89/336/EEC. 2 × 5 W (RMS) Television system B/G/H, D/K, I, L Sound output Centre 1 × 20 W Colour system NTSC 3.58/4.43 (VIDEO IN) Power consumption 170W Channel coverage See “Receivable channels and Dimensions (W ×...

  • Page 3: Table Of Contents

    ! ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. – 3 –...

  • Page 4: General

    The operating instructions mentioned here are partial abstracts SECTION 1 from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remein as in the manual. GENERAL Overview Remote commander This section briefly describes the buttons and controls on the TV set and on the Remote Commander.
  • Page 5 Step 2 Tuning in to TV Stations Getting Started Once you have set up the TV, you can choose the language of the menu. Then, you should preset the channels (up to 100 channels) by choosing either the automatic or manual method. The automatic method is easier if you want to preset all receivable channels at once.
  • Page 6 Use this method if there Preset channels manually Preset channels automatically are only a few channels in your area to preset or if Select the symbol for “Preset” with >+ or ?– and press OK. Select the symbol for “Preset” with >+ or ?– and press OK. you want to preset The PRESET menu appears.
  • Page 7 Additional Presetting Functions This section shows you additional presetting functions such as Using “Further Programme INSTALLATION sorting or skipping programme positions, captioning a station Preset” name, manual fine-tuning, and using the parental lock. Before you begin Using the menu “further Programme Preset” you can •...
  • Page 8 Fig. 22 After selecting all the characters, press OK repeatedly until the cursor appears by the next programme position (at the left margin). SONY Now the caption you chose is stored. (See Fig. 23.) Fig. 23 Repeat steps 5 and 6 to caption names for other channels.

  • Page 9: Watching The Tv

    Operating Instructions Watching Teletext or Video Input Watching teletext Press _ to view the teletext. Watching the TV For teletext operation, enter a 3-digit page number with the number buttons to select a page. For fastext operation, press one of the coloured buttons. For both operations, press V (PAGE + ) for the next page or U (PAGE –...
  • Page 10 Adjusting and Setting the TV Using the Menu Graphic Equalizer Adjusting the Picture and Sound PICTURE CONTROL GRAPHIC EQUALIZER Although the picture and sound are adjusted at the factory, you can Using this function you can individually adjust the sound by cutting Mode: [User] PICTURE CONTROL...
  • Page 11 PAP (Picture and Picture) With this function you can display two screens at the same time. In Operating Screen Mode/PAP using this way you can watch two TV programmes at the same time. Also the Menu you can watch or monitor the video output from any connected equipment (for example from a VCR) while watching TV or vice Using the Screen Mode menu you have the possibility to change versa.
  • Page 12 Teletext TV stations broadcast an information service called Teletext via Using the Teletext Menu the TV channels.Teletext service allows you to receive various information pages such as weather reports or news at any time This TV is provided with a menu-guided teletext system. When TELETEXT MENU you want.
  • Page 13 Connecting and Operating Optional Equipment SUBPAGE Connecting Optional Equipment To cancel the request Select Subpage and You may want to select a particular teletext page from several press OK. You can connect optional audio-video equipment to this TV such as a subpages which are rotated automatically.
  • Page 14 Selecting Input and Output Using AV Preset This section explains how to view the video input picture (of the Using this function you can preset the desired input source (e.g. Selecting input with video source connected to your TV), and how to select the output 1, RGB signal) to the respective AV input (AV 1 ).
  • Page 15 For the best picture quality, try to position the projection TV so that you can view the screen from within the areas shown below. You can use the TV Remote Commander to control most of Sony remote-controlled video equipment such as: beta, 8 mm and VHS Vertical viewing area VCRs and video disc players.
  • Page 16 Remove the front panel without moving the TV. turn on. • Remove the supplied filter in the same way as the attached filter. • Consult your nearest Sony service center to obtain a new filter. Pull out the lamp by the handle. Attach the new lamp.
  • Page 17 The B indicator flashes five times then A flashes once. Flashing continues in this manner. If the lamp flashes in a way not described above, consult your nearest Sony service center. Stabilizing the Projection TV After setting up, secure the projection TV to a wall, etc., with the supplied brackets, for safety purposes.

  • Page 18: Disassembly

    SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL 2-3. SERVICE POSITION Chassis assy Rear cover Twelve screws (+BVTP 4 x 16) 2-2. CHASSIS ASSY REMOVAL 2-4. F2 BOARD AND F2 BRACKET REMOVAL F2 bracket Two claws Claw F2 board Chassis assy Two screws CN6504 (+BVTP 4 x 16)

  • Page 19: Bb, B1 And J Boards Removal

    2-5. BB, B1 AND J BOARDS REMOVAL 2-6. POWER BLOCK REMOVAL (EXTENSION BOARD) Holder B1 board BB board RF booster Two claws J board Claw Terminal board Claw Three screws Power block (+BVTP 4 x 16) Two screws (+BVTP 4 x 16) Claw Two printed circuit board holders...

  • Page 20: Lamp Removal

    2-8. LAMP REMOVAL 2-10. SCREEN FRAME REMOVAL Eight screws (+BVTP 4 x 16) Screen frame Lamp door Screw (Ornamental screw B) Lamp Two screws (Hexagon socket bolt 4 x 12) Two screws Front panel (R) (+BVTP 4 x 16) 2-9. H AND F1 BOARDS REMOVAL Two screws (+BVTP 3 x 12) F1 board...

  • Page 21: C Board Removal

    2-12. OPTICAL UNIT REMOVAL 2-11. C BOARD REMOVAL Optical shield Screen mirror Three screws block (+BVTP 4 x 16) C board Shield Six screws (+BVTP 4 x 16) Optical unit Three screws Four screws (+BVTP 4 x 16) (+BVTP 3 x 12) Four printed circuit board holders Lamp base...

  • Page 22: Circuit Adjustments

    KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 SECTION 3 CIRCUIT ADJUSTMENTS 4. Press the 4 and % buttons on the remote commander to select 3-1. ELECTRICAL ADJUSTMENTS the adjustment item. Service adjustment to this model can be performed with the sup- 5. Press the OK button to procced to the next menu. plied remote commander, RM-838.
  • Page 23 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 Video Proc M CXD2030 PAP CXD2031 Item No. Adjustment item Data Amount Item No. Adjustment item Data Amount [on] Main phase WR start [52] DNR value Sub phase WR start [20] TA Sync C1p pls width [16] Main RD start [43]...

  • Page 24: Test Mode

    KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 3-2. TEST MODE Is available by pressing the Test button twice, OSD “TT” appears. The functions described below are available by pressing the numbers. To release Test Mode 2, press 0, 10, 20...twice or switch the TV into Standby Mode. Pressing the two Local Control but tons (+ and –) during Power ON will also switch into “TT”...
  • Page 25 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 Picture min CXD2030 Default data setting. no function CXD 2031 Default data setting. no function CXD 2032 Default data setting. no function CXD 2428 Default data setting. Set NVM to Protect mode (Bank 0AEH Adr. 0FFH see TT10 write with 0) Default data setting CXA2011...

  • Page 26: Error Monitor And Detection

    KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 3-3. ERROR MONITOR AND DETECTION Error Device Description Board Code In the menu ‘Error Monitor’, information about the error status of No response from the the set is displayed. 013h SDA5273 Megatext IC • Actual operating time No response from the •...

  • Page 27: Registration Adjustment

    KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 3-4. REGISTRATION ADJUSTMENT 3-5. C BOARD ADJUSTMENT Preparation 1. PLL f0 Adjustment • Aspect ratio ........16:9 (1) WIDE Mode • Image quality adjusting menu ..Standard 1) Change to “WIDE Mode”. 2) Input to monoscope signal. Note: In adjusting the registration, the registration fixing block is 3) Change “H.
  • Page 28 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 4) Τυρν Ρς5401 <ΓΛ, ΓΑΙΝ> το τηε ριγητ διρεχτιον ανδ αδ− (3) R ch ϕυστ σο τηατ ®0 ΙΡΕ ∼ 10 ΙΡΕ© µιγητ βε 180 ± 10 µς. 1) Connect Oscilloscope to TP5201 <R>. 2) Add 2.25 ± 0.02 ς το ΤΠ5211 <ΡΛΒΣ> 3.95 ±...
  • Page 29 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 5) Turn RV5609 <BH, GAIN> and adjust so that “90 IRE ~ 7) By RV5204 <R-S, GAIN2> & RV5208 <R-S, BIAS2>, 100 IRE” might be “65 ± 10 µς© adjust the waveform for TP5204 <R-sig3> to the wave- (Ρς5609 χαν...

  • Page 30: A Board Adjustment

    KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 3) Measure the voltage on TP5203 (R ch out). 3-7. SUB BRT, SUB PIX ADJUSTMENT 4) Adjust RV5211 <RVCOM> so that the voltage on (1) Sub BRT Adjustment ± 0.02 ς. TP5205 <R-V comout> might be – 0.6 V 1) Input 10 step signal to Video, 1 picture mode: smart 5) Μεασυρε...
  • Page 31 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 8) Input 20 IRE flat fild signal. 9) Adjust with CXD2412 “7. RL Bias” or “6. BL Bias” so that can approach to adjusting center the most. Adjustment Center X=0.2952 Y=0.3047 10) Return following two data. CXA1839 “22.
  • Page 32 KL-37W2/37W2K RM-838 KL-50W2/50W2K/50W2U RM-838 MEMO – 32 –...

  • Page 33: Diagrams

    SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAMS – 33 – – 34 – – 35 – – 36 –...
  • Page 34 – 37 – – 38 – – 39 – – 40 –...

  • Page 35: Frame Schematic Diagram

    4-3. CIRCUIT BOARDS LOCATION 4-2. FRAME SCHEMATIC DIAGRAM Power block 4-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS Note: • All capacitors are in µF unless otherwise noted. (pF: µµF) Capacitors without voltage indication are all 50 V. • Indication of resistance, which does not have one for rating electrical power, is as follows.

  • Page 36: Schematic Diagrams Of F1, F2, G, H, J, Ta And Tb Boards

    (1) Schematic Diagrams of F1, F2, G, H, J, TA and TB BOARDS BIMETAL TO G BOARD TO F1 BOARD TO G BOARD TO A BOARD CN6001 CN8031 CN6003 CN1004 CN8031 CN6505 CN6501 CN6507 CN6503 CN6506 WHT-L CN9501 CN9551 +12V :S-MICRO :VH-B :VH-B...
  • Page 37 SIRCS,SIGNAL POWER LAMP,CONTROL SW AUDIO/VIDEO SENSOR SENSOR [POWER SUPPLY ] GENERATON TERMINAL (S-VIDEO) IN/OUT [ MAIN SW ] < LAMP COVER> < FILTER COVER> H BOARD – F2 Board – – H Board – – F1 Board – Terminal name of semiconductors in silk screen printed circuit ( Ref.
  • Page 38 TUNER, AUDIO CONT., NICAM DECODER, RGB MRX, MICRO CONT., MEGA TEXT – A Board (Conductor Side) – – A Board (Component Side) – • A BOARD SEMICONDUCTOR LOCATION Q1022 Q1120 Q1024 C-3 2 Q1121 F-2 2 Q1025 C-3 2 Q1122 Q1026 B-3 2 Q1123...
  • Page 39 4-2. FRAME SCHEMATIC DIAGRAM • A (1/3) BOARD WAVEFORMS CN1001 TU1001 :S-MICRO TVF-01FRP CN002 VIDEO C1430 ATT SW C1006 C1046 0.01 B:CHIP B:CHIP L1003 L1004 C1047 R1052 3.3k R1057 1.1µH 68µH 0.01 +20V 4.7k R1011 R1012 R1015 B:CHIP :CHIP Q1003 0.8 Vp-p (8.192 MHz) 0.8 Vp-p (H) 1.2 Vp-p (H)

  • Page 40: Schematic Diagram Of A (2/3) Board

    (3) Schematic Diagram of A (2/3) Board (3) Schematic Diagram of A (3/3) Board • A (2/ 3) BOARD WAVEFORMS 1.0 Vp-p (H) 1.0 Vp-p (H) 1.2 Vp-p (H) 0.9 Vp-p (H) 0.9 Vp-p (H) 3.0 Vp-p (H) 2.5 Vp-p (H) 2.5 Vp-p (H) •...

  • Page 41: Schematic Diagram Of B1 (1/3) Board

    • B1 (1/3) BOARD WAVEFORMS (5) Schematic Diagram of B1 (1/3) Board 0.8 Vp-p (H) 1.5 Vp-p (H) 1.5 Vp-p (H) 2.0 Vp-p (H) 1.0 Vp-p (H) 1.2 Vp-p (H) 1.5 Vp-p (H) 1.3 Vp-p (H) 3.5 Vp-p (H) 3.5 Vp-p (H) 1.0 Vp-p (7.7 MHz) 0.8 Vp-p (14.3 MHz) 2.0 Vp-p (2.69 MHz)

  • Page 42: Schematic Diagram Of B1 (2/3) Board

    (6) Schematic Diagram of B1 (2/3) Board • B1 (2/3) BOARD WAVEFORMS 1.0 Vp-p (7.7 MHz) 0.8 Vp-p (1.43 MHz) Schematic diagram Schematic diagram (1/2) board (1/2) board – 66 – – 67 – – 68 –...
  • Page 43 4-2. FRAME SCHEMATIC DIAGRAM DIGITAL COMB/CHROMA DECODER SECAM DECODER, TWIN PICTURES – B1 Board (Conductor Side) – L4015 1µH :EL0606 IC4028(3/6) L4014 IC4028(5/6) IC4028(6/6) MC74HCU04DR2 1µH MC74HCU04DR2 R4275 :EL0606 MC74HCU04DR2 :RN-CP C4235 C4275 IC4024 R4286 IC4028(4/6) TC4S66F-TE85L F:CHIP (P1) ICLK MC74HCU04DR2 :CHIP R4359...

  • Page 44: Schematic Diagram Of C (1/2) Board

    (8) Schematic Diagram of C (1/2) Board +5V-2 RHBS RLBS R5271 Q5228 +13V 3.3k TP5210 TP5211 C5235 :CHIP 2SC2412K C5236 Q5226 +13V 2SA1037K R5273 +13V F:CHIP C5203 C5202 :CHIP R-SIG1 F:CHIP R5209 R5306 R5210 R5214 C5241 C5213 C5214 R5274 R5288 Q5204 R5203 R5305...
  • Page 45 LCD DRIVER, (9) Schematic Diagram of C (2/2)Board • C (2/2) BOARD – C Board (Conductor Side) – LCD CONT. C BOARD WAVEFORMS Terminal name of semiconductors in silk screen printed circuit ( Ref. Q5404, Q5409, Q5417, Q5421, Q5425, Q5426, Q5429, Q5430, Q4533, Q5609, Q5616, Q5617, Q5620, Q5621, Q5624, Q5625, Q5628, Q5629 Q5001, Q5203 –...

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