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Sony KV-21FT1B Service Manual

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SERVICE MANUAL

MODEL
COMMANDER
KV-21FT1B
KV-21FT1E
DEST
CHASSIS NO.
RM-887
French
SCC-Q54A-A
RM-887
Spanish SCC-Q53A-A
MODEL
KV-21FT1K
KV-21FT1U
1
FE-2
CHASSIS
COMMANDER
DEST
CHASSIS NO.
RM-887
OIRT
SCC-Q51A-A
RM-887
UK
SCC-Q52A-A
RM-889

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Table of Contents

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   Summary of Contents for Sony KV-21FT1B

  • Page 1: Service Manual

    SERVICE MANUAL FE-2 CHASSIS MODEL MODEL COMMANDER DEST CHASSIS NO. COMMANDER DEST CHASSIS NO. KV-21FT1B KV-21FT1K RM-887 French SCC-Q54A-A RM-887 OIRT SCC-Q51A-A KV-21FT1E KV-21FT1U RM-887 Spanish SCC-Q53A-A RM-887 SCC-Q52A-A RM-889...
  • 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: Rear Connection Panel

    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: General

    SECTION 1 GENERAL...
  • Page 12: Disassembly

    SECTION 2 DISASSEMBLY 2-1. Rear Cover Removal 2-2. Chassis Removal and Refitting => => Remove the rear cover fixing screws indicated. Pull the rear To remove the chassis release the clips indicated at opposite cover straight back until clear of chassis. sides of the main bracket and slide the chassis away from the beznet.
  • Page 13: Picture Tube Removal

    2-5. 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. 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 5-2. BLOCK DIAGRAMS (1) IC001 CN1201 MICRO, VIDEO PROCESSOR, ROM, AUDIO, VIDEO SWITCH R AUDIO CN001 TO SPEAKERS +3.3V XTAL IN L AUDIO IC604 IC501 STBY PH601 DUAL DC REGULATOR V OUTPUT S601 ISOLATOR XTAL OUT J1200 IC002 CN601 REMOTE CONTROL POWER IC201 RECEIVER...
  • 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 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 Block Diagrams

    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

    REMARK REF. NO. PART.NO DESCRIPTION REMARK £ 1-571-433-21 SWITCH, PUSH (AC POWER) *A-1632-893-A A BOARD, COMPLETE (KV-21FT1B) 4-202-531-01 AC CORD LOCK (SC) *A-1632-880-A A BOARD, COMPLETE (KV-21FT1E) £ 1-765-286-11 CORD, POWER *A-1632-892-A A BOARD, COMPLETE (KV-21FT1K) (KV-21FT1B/21FT1E/21FT1K) *A-1632-894-A A BOARD, COMPLETE (KV-21FT1U) £...
  • Page 31: Picture Tube

    6-2. PICTURE TUBE REF. NO. PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK X-4200-591-1 BEZNET ASSY 52-57 £ 1-419-187-11 COIL, DEGAUSSING 4-205-398-01 SPRING, DOOR 4-203-390-11 CUSHION, DGC 4-205-393-01 DOOR, PAINTED 4-204-900-01 BAND, DGC 4-205-395-01 BUTTON, POWER (PAINTED) £ 1-251-839-21 CAP ASSY, HIGH VOLTAGE 4-205-391-01 WINDOW ORNAMENTAL (PAINTED) 3-704-495-01 SPACER,DY 4-204-426-01 SPRING...
  • Page 32: Electrical Parts List

    A BOARD COMMON Parts List : Parts common to all models listed in this manual .......... 43 A BOARD VARIANT Parts List : Parts that belong only to the model specified Model KV-21FT1B ......................49 KV-21FT1E ......................49 KV-21FT1K ......................49 KV-21FT1U ......................
  • Page 33 PART.NO DESCRIPTION REMARK REF. NO. PART.NO DESCRIPTION REMARK C045 1-164-489-11 CERAMIC CHIP 0.22UF 10.00% 16V *A-1632-893-A A Board, Complete (KV-21FT1B) C046 1-163-037-11 CERAMIC CHIP 0.022UF 10.00% 50V *A-1632-880-A A Board, Complete (KV-21FT1E) C047 1-126-935-11 ELECT 470UF 20.00% 16V *A-1632-892-A A Board, Complete (KV-21FT1K)
  • Page 34 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 C539 1-107-642-91 ELECT 3.3UF 20.00% 200V C638 1-107-679-91 ELECT 10UF 20.00% 450V C540 1-136-206-11 MYLAR 0.033UF...
  • 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 D014 8-719-056-77 DIODE UDZ-TE17-3.9B D601 8-719-510-53 DIODE D4SB60L-F D016 8-719-109-89 DIODE MTZJ-T-77-5.6B D602 8-719-911-19 DIODE 1SS119-25TD D017...
  • 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 IC531 8-759-665-11 IC LM393DT < TRANSISTOR > IC601 8-759-671-30 IC MCZ3001D IC602 8-749-016-19 IC SE135N-LF4 Q013 8-729-120-28 TRANSISTOR 2SC2412K-T-146-R...
  • 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 R014 1-216-065-91 RES-CHIP 4.7K 5% 1/10W R074 1-216-073-00 RES-CHIP 1/10W R017 1-216-174-00 RES-CHIP 1/8W R075 1-216-295-91 SHORT...
  • 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 R446 1-216-113-00 RES-CHIP 470K 5% 1/10W R552 1-216-097-91 RES-CHIP 100K 5% 1/10W R447 1-216-295-91 SHORT R553...
  • Page 39 9.1K 0.5% 1/10W X001 1-578-774-11 VIBRATOR, CRYSTAL R650 1-216-627-11 METAL CHIP 0.5% 1/10W R651 £ 1-220-926-11 FUSIBLE 0.47 10% 1/2W A Board Variant Parts KV-21FT1B R652 1-216-081-00 RES-CHIP 1/10W R653 1-216-073-00 RES-CHIP 1/10W < TUNER > R654 1-216-001-00 RES-CHIP 1/10W...
  • Page 40 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 C719 1-102-114-00 CERAMIC 470PF 10.00% 50V < SOCKET > C1803 1-101-005-00 CERAMIC 0.022UF C1804 1-126-964-11 ELECT...
  • Page 41 1-452-728-61 COIL, NA ROTATION (RT-154) R734 1-247-807-31 CARBON 1/4W £ 1-571-433-21 SWITCH, PUSH (AC POWER) R736 1-215-900-11 METAL OXIDE £ 1-765-286-11 CORD, POWER (KV-21FT1B/21FT1E/21FT1K) £ 1-776-860-11 POWER CORD, FILTER (KV-21FT1U) R741 1-202-549-00 SOLID 1/2W £ 8-738-836-05 PICTURE TUBE (A51LPT60X) R1801...
  • 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.

This manual is also suitable for:

Kv-21ft1eKv-21ft1uKv-21ft1k

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