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SERVICE MANUAL

MODEL
COMMANDER
KV-14LT1B
KV-14LT1E
KV-14LT1K
KV-14LT1U
DEST
CHASSIS NO.
RM-887
French
SCC-Q54B-A
RM-887
Spanish SCC-Q53B-A
RM-887
OIRT
SCC-Q51B-A
RM-887
UK
SCC-Q52B-A
MODEL
KV-14LM1B
KV-14LM1E
KV-14LM1K
KV-14LM1U
1
FE-2
CHASSIS
COMMANDER
DEST
CHASSIS NO.
RM-889
French
SCC-Q54D-A
RM-889
Spanish SCC-Q53D-A
RM-889
OIRT
SCC-Q51D-A
RM-889
UK
SCC-Q52D-A
RM-889

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Table of Contents

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   Summary of Contents for Sony KV-14LT1B

  • Page 1: Service Manual

    SERVICE MANUAL FE-2 CHASSIS MODEL MODEL COMMANDER DEST CHASSIS NO. COMMANDER DEST CHASSIS NO. KV-14LT1B KV-14LM1B RM-887 French SCC-Q54B-A RM-889 French SCC-Q54D-A KV-14LT1E KV-14LM1E RM-887 Spanish SCC-Q53B-A RM-889 Spanish SCC-Q53D-A KV-14LT1K KV-14LM1K RM-887 OIRT SCC-Q51B-A RM-889 OIRT SCC-Q51D-A KV-14LT1U KV-14LM1U...
  • Page 2: Table Of Contents

    EXPLOSÈES ET LES LISTES DE PIECES SONT D’UNE IMPOR- TANCE CRITIQUE POUR LA SÈCURITÈ DU FONCTIONNEMENT, NE LES REMPLACER QUE PAR DES COMPSANTS SONY DONT LE NUMÈRO DE PIÈCE EST INDIQUÈ DANS LE PRÈSENT MANUEL OU DANS DES SUPPLÈMENTS PUBLIÈS PAR SONY.
  • Page 3 l l a . s l . s l e i l n i l i n i...
  • Page 4 y t i WARNING (UK Models only) The flexible mains lead is supplied connected to a B.S. 1363 fused plug having a fuse of 5 AMP rating. Should the fuse need to be replaced, use a 5 AMP FUSE approved by ASTA to BS 1362, ie one that carries the mark.
  • Page 5: Connectors

    21 pin connector Pin No Signal Signal level Audio output B Standard level : 0.5V rms (right) Output impedence : Less than 1kohm* Audio output B Standard level : 0.5V rms (right) Output impedence : More than 10kohm* Audio output A Standard level : 0.5V rms (left) Output impedence : Less than 1kohm*...
  • Page 6: Self Diagnostic Software

    FE-2 SELF DIAGNOSTIC SOFTWARE The identification of errors within the FE-2 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty.
  • Page 7: Switching On The Tv And Automatically Tuning

    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. Switching On the TV and Automatically Tuning A new menu appears on the screen asking you to check Please confirm that that the aerial is connected.
  • Page 8: Introducing And Using The Menu System

    Level 1 Level 2 Level 3 / Function Introducing and Using the Menu System SLEEP TIMER Picture Adjustment Your TV uses an on-screen menu system to guide you through the operations. Use the The “Sleep Timer” option in the “Timer” menu Mode: Personal Contrast following buttons on the Remote Control to operate the menu system:...
  • Page 9 Level 1 Level 2 Level 3 / Function Level 1 Level 2 Level 3 / Function AUTO TUNING 3 After selecting the Channel option, press Picture Adjustment Picture Adjustment The “Auto Tuning” option in the “Set Up” Then press to select the channel Mode: Personal Mode: Personal Contrast...
  • Page 10: Teletext

    *This option is only available depending the country you have selected in the “Country” menu. To reveal concealed information (e.g: answer to a quiz): ** “PlayStation” is a product of Sony Computer Entertainment, Inc. Press . Press it again to conceal the information.
  • Page 11: Specifications

    VCR. For more information on Smartlink, please refer to The standby indicator on the TV • Contact to your nearest Sony service centre. the Instruction Manual of your VCR). flashes even though the “On Timer” • TV system Autodetection.
  • Page 12: Disassembly

    SECTION 2 DISASSEMBLY 2-1. Rear Cover Removal 2-2. A Board PWB Removal [ Step 1 ] <= => Remove screw. => <= Release the mains power cable from its securing posts. Remove the rear cover fixing screws indicated. Pull the rear cover away from the front beznet until clear of chassis.
  • Page 13: Picture Tube Removal

    2-6. Picture Tube Removal WARNING: BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.
  • Page 14: Set-up Adjustments

    SECTION 3 SET-UP ADJUSTMENTS • Carry out the adjustments in the following order : When complete readjustment is necessary or a new picture 3-1. Beam Landing. tube is installed, carry out the following adjustments. 3-2. Convergence. • Unless there are specific instructions to the contrary, carry 3-3.
  • Page 15: Convergence

    If the V.STAT magnet is moved in the direction of the (a) 3-2. Convergence and (b) arrows, the Red, Green and Blue points move as indicated below. Preparation: · Before starting this adjustment, adjust the focus, horizontal size and vertical size. ·...
  • Page 16 Geometry Adjustment. YCH Adjustment Preparation: YCH VR Before starting this adjustment, adjust the horizontal and vertical Deflection Yoke static convergence. Remove the deflection yoke spacer. Tilt the deflection yoke as indicated in the figure below and TLV Adjustment optimise the geometry. Tilting the DY Up and Down will balance the upper and lower pin adjustment.
  • Page 17: Focus Adjustment

    Layout of each control 3-4. Screen (G2), White Balance [Adjustment in the service mode using the remote commander] G2 adjustment Input a dot signal from the pattern generator. Set the Picture, Brightness and Colour to minimum. Apply 175V DC from an external power supply to the R, G V.STAT and B cathodes of the CRT.
  • Page 18: Circuit Adjustments

    SECTION 4 CIRCUIT ADJUSTMENTS 4-1. Electrical Adjustments Service adjustments to this model can be performed using the supplied Remote Commander RM-887(14LT1) or RM-889(14LM1). How to enter into the Service Mode Turn on the main power switch and enter into the stand-by mode. Press the following sequence of buttons on the Remote Commander.
  • Page 19 Sub Brightness Adjustment Input a Monoscope pattern. Press ‘TEST’ ‘TEST’ 13 on the Remote Commander. Adjust the ‘Sub-Brightness’ data so that there is barely a difference between the 0 IRE and 10 IRE signal levels. Sub Contrast Adjustment Input a video signal that contains a small 100% white area on a black background.
  • Page 20: Test Mode

    4-2. TEST MODE 2: V SIZE Is available by pressing the ‘TEST’ button twice, OSD ‘TT’ appears. The functions described below are available by selecting the two numbers. To release the ‘Test mode 2’, press 00, 10, 20 ... twice or V LIN switch the TV set into Stand-by mode.
  • Page 21 Memo...
  • Page 22: Circuit Board Location

    5-1. CIRCUIT BOARD LOCATION Reference Information RESISTOR : METAL FILM : SOLID FPRD : NON FLAMMABLE CARBON FUSE : NON FLAMMABLE FUSIBLE : NON FLAMMABLE METAL OXIDE : NON FLAMMABLE CEMENT : NON FLAMMABLE WIREWOUND CVM Board S1 Board : ADJUSTMENT RESISTOR COIL LF-8L : MICRO INDUCTOR...
  • Page 23: Block Diagrams

    5-2. BLOCK DIAGRAMS (1) IC001 CN1201 MICRO, VIDEO PROCESSOR, ROM, AUDIO, VIDEO SWITCH R AUDIO CN001 TO SPEAKERS +3.3V STBY XTAL IN L AUDIO IC604 PH601 DUAL DC REGULATOR S601 ISOLATOR XTAL OUT J1200 IC002 IC501 CN601 REMOTE CONTROL POWER V OUTPUT IC201 DY ASSY...
  • Page 24 R, G, B OUT PRINTED WIRING BOARD A board IC Voltage Table A board Semiconductor Voltage Table A board Location Table C board Waveforms A board Waveforms 20us/div 20us/div 20us/div 20us/div 20us/div 10us/div 1.77 Vp-p (H) 1.88 Vp-p (H) 1.88 Vp-p (H) 1.84 Vp-p (H) 1.86 Vp-p (H) 6.0 Vp-p (H)
  • Page 25 1 µF 1 µF 1 µF 1 µF...
  • Page 27: Semiconductors

    5-4. SEMICONDUCTORS LM393DT DTA144ESA 2SK2251-01-F19 TDA2822M DTA144ESA-TP TEA2124 DTC114EKA DTC114EKA-T146 DTC143TKA-T146 DTC144EKA-T-146R 2SA1037K-T-146-R R2SA1162-G 2SA1037K-T-146-QR 2SD601A-QTX ( TOP VIEW ) 2SC1623-L5-L6 2SC2412K-QR 2SC2412K-T-146-R SE-135N SE135N-LF12 AK04-V1 ERD28-06S AU-01Z-V1 ERC06-15SL BYD33G FMN-G12S BYD33G- GP08DPKG23 AMMO RG1CLF-B1 DINL20-U-TA2 RGP10GPKG23 DINL40-U-TR2 RU-3AM ERB44-06TP1 RU3YX-LF-C4 IRF614-LF EGP20G...
  • Page 28 ERA81-004TP1 MTZJ-T-77-15B ERA83-006 MTZJ-T-77-33A MTZJ-3.6A MTZJ-33C MTZJ-T-77-2.2A MTZJ-7.5B HZS9.INBZ RD3.9ES-B2 MTZJ-T-77-3.6B RD5.6ESB2 MTZJ-T-77-5.6B RD6.8ES-B2 MTZJ-T-77-5.6C RD7.5ESB2 MTZJ-T-77-6.8A RD9.1ES-B3 MTZJ-T-77-6.8C RD10ESB2 MTZJ-T-77-8.2B RD15ESB2 MTZJ-T-77-7.5B 1SS119-25TD MTZJ-T-77-9.1A 1SS133T-77 MTZJ-T-77-9.1C MTZJ-T-77-10 CATHODE ANODE SLA-570KT3F CATHODE ANODE 1SS355TE-17 RD12SB2 UDZS-TE-17-4.7B UDZS-TE-17-5.6B UDZS-TE-17-6.8B UDZS-TE-17-9.1B UDZ-TE-17-22B ANODE CATHODE UF4005PKG23...
  • Page 29: Ic Blocks

    5-5 IC BLOCK DIAGRAMS A BOARD IC604 BA41W12ST A BOARD IC401/IC531 LM393TD Vref A BOARD IC601 MCZ3001D Remote Internal Driver DVLD Sel=34v ref 5v Reg. 10v 15v/8v Level Shift Vsense Control Logic Latch Centre Timer A BOARD IC1201 TDA7494 +Vcc MUTE/STBY PROTECTION Pwr Gnd...
  • Page 30: Exploded Views

    *A-1632-902-A A BOARD, COMPLETE (KV-14LM1K) KV-14LT1B/14LT1E/14LT1K) *A-1632-903-A A BOARD, COMPLETE (KV-14LM1U) £ 1-776-860-11 POWER CORD, FILTER (KV-14LM1B/14LT1B/ *A-1632-895-A A BOARD, COMPLETE (KV-14LT1B) KV-14LM1U/14LT1U) *A-1632-886-A A BOARD, COMPLETE (KV-14LT1E) *4-204-517-02 SUPPORT, FBT (KV-14LM1/14LT1B/14LT1E) *A-1632-896-A A BOARD, COMPLETE (KV-14LT1K) *4-204-517-01 SUPPORT, FBT (KV-14LT1K/14LT1U) *A-1632-897-A A BOARD, COMPLETE (KV-14LT1U) £...
  • Page 31: Picture Tube

    6-2. PICTURE TUBE REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK X-4200-589-1 BEZNET ASSY (KV-14LM1) 52, 55-59 *A-1632-885-A C BOARD, COMPLETE X-4200-588-1 BEZNET ASSY (KV-14LT1) 52-59 4-369-318-21 SPRING, TENSION 4-047-464-01 CATCHER, PUSH £ 1-419-548-11 COIL, DEGAUSSING 4-205-372-01 DOOR CONTROL (KV-14LT1) *4-205-377-01 DGC HOLDER 4-205-373-01 SHAFT DOOR (KV-14LT1)
  • Page 32: Electrical Parts List

    SECTION 7 ELECTRICAL PARTS LIST PARTS LISTING TABLE OF CONTENTS Page C BOARD COMPLETE Parts List : ......................43 A BOARD COMMON Parts List : Parts common to all models listed in this manual .......... 44 A BOARD VARIANT Parts List : Parts that belong only to the model specified Model KV-14LM1...
  • Page 33 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK D726 8-719-991-33 DIODE 1SS133T-77 *A-1632-885-A C Board, Complete < CAPACITOR > < SOCKET > C701 1-126-934-11 ELECT 220UF...
  • Page 34 10.00% 16V *A-1632-902-A A Board, Complete (KV-14LM1K) *A-1632-903-A A Board, Complete (KV-14LM1U) C046 1-163-037-11 CERAMIC CHIP 0.022UF 10.00% 50V *A-1632-895-A A Board, Complete (KV-14LT1B) *A-1632-886-A A Board, Complete (KV-14LT1E) C047 1-126-935-11 ELECT 470UF 20.00% 16V *A-1632-896-A A Board, Complete (KV-14LT1K) C053 1-164-004-11 CERAMIC CHIP 0.1UF...
  • Page 35 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK C509 1-107-364-11 MYLAR 0.01UF 10.00% 400V C619 1-164-644-11 CERAMIC 330PF 10.00% 500V C510 1-163-005-11 CERAMIC CHIP 470PF 10.00% 50V...
  • Page 36 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK CN604 £ 1-695-915-11 TAB (CONTACT) D505 8-719-988-61 DIODE 1SS355TE-17 CN1201 *1-564-506-11 PLUG, CONNECTOR 3P D506 8-719-908-03 DIODE GP08DPKG23 D507...
  • Page 37 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK < FERRITE BEAD > L601 1-408-603-31 INDUCTOR 10UH L602 1-408-611-31 INDUCTOR 47UH FB601 1-410-397-21 FERRITE 1.1UH...
  • Page 38 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK R009 1-216-049-91 RES-CHIP 1/10W R070 1-216-025-91 RES-CHIP 1/10W R010 1-216-049-91 RES-CHIP 1/10W R071 1-216-049-91 RES-CHIP 1/10W...
  • Page 39 The components identified by shading and marked are critical for safety Replace only with the part number specified. REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK R502 1-216-073-00 RES-CHIP 1/10W R561 1-216-129-00 RES-CHIP 2.2M 5% 1/10W R503 1-215-888-00 METAL OXIDE R562 1-216-121-91 RES-CHIP 1/10W...
  • Page 40 1/10W R434 1-216-073-00 RES-CHIP 1/10W < VARISTOR > < TUNER > VDR601 £ 1-803-830-11 VARISTOR (ERZV14D621) TU101 8-598-535-00 FRONTEND BTF-EF411 (KV-14LT1B) < CRYSTAL > 8-598-531-00 FRONTEND BTF-EF401 (KV-14LT1E) 8-598-537-00 FRONTEND BTF-EP401 (KV-14LT1K) X001 1-578-774-11 VIBRATOR, CRYSTAL+ 8-598-527-00 FRONTEND BTF-EU601 (KV-14LT1U)
  • Page 41 £ 1-453-347-11 TRANSFORMER ASSY, FLYBACK (NX-1747//U2A4) 1-529-711-11 SPEAKER (8CM) £ 1-571-433-21 SWITCH, PUSH (AC POWER) £ 1-765-286-11 CORD, POWER (KV-14LM1B/14LM1E/14LM1K/ KV-14LT1B/14LT1E/14LT1K) £ 1-776-860-11 POWER CORD, FILTER (KV-14LM1B/14LT1B/ KV-14LM1U/14LT1U) 8-598-535-00 FRONTEND BTF-EF411(KV-14LM1B/14LT1B) 8-598-531-00 FRONTEND BTF-EC401(KV-14LM1E/14LT1E) 8-598-537-00 FRONTEND BTF-EP401(KV-14LM1K/14LT1K) 8-598-527-00 FRONTEND BTF-EU601(KV-14LM1U/14LT1U) £...
  • Page 42 • User programmable Functional Check through Infrared • Fast and documented Test Mode setting of all Sony TV chassis Additional features such as Adjustments and Troubleshooting are available in chassis-dependent software modules. Please contact your local Sony Service organisation for the latest information.

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