THOMSON CR14300 Basic Service Data
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THOMSON CR14300 Basic Service Data

THOMSON CR14300 Basic Service Data

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CR14300
FEB/02
Television
Basic Service Data
Adjustment Procedures ..................................................................................................
Block Diagrams ...............................................................................................................
Circuit Description .........................................................................................................
Disassembly ...................................................................................................................
IC Pin Descriptions ........................................................................................................
Remote Control ..............................................................................................................
Replacement Partlist .......................................................................................................
Schematic Diagrams
CR14300 / CR20300 / CR20310 ................................................................................
CR29411 only ............................................................................................................
Servicing Checks .............................................................................................................
Specifications ..................................................................................................................
Troubleshooting ..............................................................................................................
Waveforms ......................................................................................................................
CAUTION: Modification or repair of this unit by unauthorized persons is a direct violation of FCC Rules Part 68.216 and could
result in risk of electric shock. You are urged to contact a qualified factory authorized service facility for repairs.
Components having special safety characteristics are identified by a ( ) on schematics and on the parts list in this Service Data and its bulletins.
Before servicing this instrument, it is important that the service technician read and follow the "Safety Precautions" in the Basic Service Data.
First Edition - First Printing
Copyright 2002 - Thomson multimedia Inc.
®
Printed in U.S.A. - Trademark(s)
Registered - Marca(s) Registrada(s)
All manuals and user guides at all-guides.com
Latin America After Sales
Indianapolis, IN 46290 U.S.A.
SERVICE DATA INDEX
SAFETY NOTICE
USE ISOLATION TRANSFORMER WHEN SERVICING
CR14300
Additional Models:
CR20300, CR20310 &
CR29411
Page
Number
6
13
22
5
18
11
36
63
64
4
2
24
32
CR14300

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  • Page 1 Circuit Description ......................Disassembly ........................IC Pin Descriptions ......................Remote Control ......................Replacement Partlist ....................... Schematic Diagrams CR14300 / CR20300 / CR20310 ................CR29411 only ......................Servicing Checks ......................Specifications ........................Troubleshooting ......................Waveforms ........................CAUTION: Modification or repair of this unit by unauthorized persons is a direct violation of FCC Rules Part 68.216 and could result in risk of electric shock.
  • Page 2 Heating:....................6.15 + 0.15 Vrms. f) FLY BACK Main Power Supply : • “Fly back” Output Voltage CR14300...……....105 ± 2 V DC; max ripple 2 Vpp; • “Fly back” Output Voltage CR20300 e CR20310…..108.5 ± 2V DC; max ripple 2 Vpp;...
  • Page 3 1.8 Antenna Input Impedance: • VHF/UHF/CABLE..........75Ω unbalanced (“F” type connector). 1.9 Terminals: • Rear and front audio (mono) and video input …........CR14300/20300; • Rear and front audio (stereo) and video input ..........CR20310; • Two rear and one front audio (stereo) and video input........CR29411;...

  • Page 4: Memory Initialization

    All manuals and user guides at all-guides.com 3. ON-SCREEN DISPLAY ADJUSTMENT – SERVICE MODE 3.1 Memory Initialization If a service repair is undertaken where it has been required to change the MEMORY IC (IC101 and IC102) the following steps should be taken to ensure correct data settings: " memory initialization": •...
  • Page 5 All manuals and user guides at all-guides.com SERVICE SERVICE SERVICE SERVICE AGCT AGCS SERVICE SERVICE SERVICE SERVICE ORIGMAG FMWS FETRACK AVTRACK MODEL VO.3P BLKCURR 3.3 Service Menu Items: HP = Horizontal Parallelogram RGB = OSD Bright HB = Horizontal Bowl SBL= Services Blanking HSH = Horizontal Shift Adjust FFI = IF Filter...

  • Page 6: Agc Adjustment

    All manuals and user guides at all-guides.com 3.4 AGC Adjustment • Apply a color bar pattern (RF Input) with 500µV signal; • Connect a DC Voltmeter, in the AGC pin of the tuner; • Adjust AGCT to Zero and measure the voltage (V1); •...

  • Page 7: Horizontal Adjustment

    All manuals and user guides at all-guides.com • Activate the adjustment mode display (SBL item). Ajust SBL from 0 to 1. Blanking the bottom of the screen. • Adjust VSH until the bottom of the pattern be aligned with the reference marks of the mechanical center on picture tube (the central vertical line in the center of the tube).

  • Page 8: "Screen ( G2 )" Adjustment

    All manuals and user guides at all-guides.com • Press “VOLUME +” button and change the value from 0 to 1. Turn off the television and the ORIGINAL MAGIC setup will be registered. 3.9 “SCREEN ( G2 )” Adjustment • Apply a Circle Pattern Philips at the antenna terminal (RF Input). •...

  • Page 9: Remote Control

    All manuals and user guides at all-guides.com 4 – REMOTE CONTROL Models CR14300/20300/20310 NOTE: Consult the original r. c. manufacturer documentation to access the schematic diagram and the replacement parts list. The “MENU” button contains the following operations: MAIN MENU PICTURE >...
  • Page 10 All manuals and user guides at all-guides.com 4 – REMOTE CONTROL Model CR29411 NOTE: Consult the original r. c. manufacturer documentation to access the schematic diagram and the replacement parts list. The “MENU” button contains the following operations: The “MENU” button contains the following operations: MAIN MENU MAIN MENU...
  • Page 11 All manuals and user guides at all-guides.com 5.2 – BLOCK DIAGRAM OF IC-101 (TDA9380)
  • Page 12 All manuals and user guides at all-guides.com 5.3 – BLOCK DIAGRAM OF IC-490 (BU4052...
  • Page 13 All manuals and user guides at all-guides.com 5.4 – BLOCK DIAGRAM OF IC-601 (VERTICAL DEFLECTION BOOSTER) TDA9309/TDA8177F 5.5 – BLOCK DIAGRAM OF IC-401 (STEREO AMPLIFIER) TDA7499...
  • Page 14 All manuals and user guides at all-guides.com 5.6 – BLOCK DIAGRAM OF IC-450 (STEREO DECODER)
  • Page 15 All manuals and user guides at all-guides.com 5.7 – BLOCK DIAGRAM OF IC-430 – LMC568 PLL-“SAP” ____________________________________________...
  • Page 16 FILTER OF AGC AND SIF AVL REF HOUT OUTPUT OF HORIZONTAL OSC. 15750HZ SAND H PULSE SAND CASTLE ALDEXT OSS AM EXTERNAL AUDIO INPUT IN THE MOD CR14300/20300 – IN THE OTHERS: N/C EHT PROT PROTECTION PLLIF PLL IF FILTER VIDEOOUT...
  • Page 17 All manuals and user guides at all-guides.com BCORR/VGUARD BLYIN BEAM CURRENT GREEN BLUE VDD A SUPPLY GROUND VDD C SUPPLY OSDGND GND OF OSC 12MHZ CRISTAL OF 12MHZ XOUT CRISTAL OF 12MHZ RESET RESET CIRCUIT VDD P SUPPLY 33V MUDO MUTE PW ON POWER...
  • Page 18 All manuals and user guides at all-guides.com CAPACITOR TIMING WIDEBAND FOR DBX CAPACITOR TIMING SPECTRAL FOR DBX CAPACITOR WIDEBAND FOR DBX CAPACITOR SPECTRAL FOR DBX VARIABLE EMPHASIS OUTPUT FOR DBX VARIABLE EMPHASIS INPUT FOR DBX CAPACITOR NOISE REDUCTION FOR DBX CAPACITOR MUTE FOR SAP CDEC CAPACITOR DC-DECOUPLING FOR SAP...
  • Page 19 All manuals and user guides at all-guides.com OUTB OUTPUT IN2B AV3 ( L) INPUT TO CR29411 AND VIDEO INPUT TO CR14300/20300 IN3B AV1 ( L) INPUT TO CR20310/29411 - AUDIO INPUT TO CR14300/20300 SUPPLY VOLTAGE 6.5 – IC102 (M24CO4MN) SIGN...

  • Page 20: Power Supply

    All manuals and user guides at all-guides.com 7.0 - OPERATION DESCRIPTION- CP02R0 TELEVISION SET CIRCUIT Fig.1- Block diagram 3.Tuner 5. Stereo 6.Audio decoder output 2. TV signal processor and Microprocessor Speaker Circuit 7.Video 4. AV output switches 8.Horizontal and vertical 1.

  • Page 21: Stereo Decoder

    All manuals and user guides at all-guides.com -Enhanced 80C51 microprocessor core; -Internal program memory (48 Kbytes ROM and 1 Kbytes RAM); -High performance OSD; -Closed Caption decoder; -I2C bus serial I/O; -Only one reference (12 MHz) crystal for all internal timing; -Multi-standard vision IF circuit (45.75 MHz) with PLL demodulator;...
  • Page 22 All manuals and user guides at all-guides.com 7.8 - HORIZONTAL AND VERTICAL DEFLECTIONS IC601, T701, T702, Q701 and surrounding components. Vertical deflection circuit uses a TDA9309 (IC601 - vertical deflection booster) and operates with around 24V and provides output current to drive the yoke. The input signals are vertical drive A and B from the TV signal processor (VDRA_pin22 and VDRB_pin21 IC101).
  • Page 23 All manuals and user guides at all-guides.com 2. DISASSEMBLY INSTRUCTIONS Removal of mechanical parts and P.C. boards. 2.1 Back cabinet (refer to fig. 2.1) a. Remove the screws which are used for holding the back cabinet to the front cabinet (6 screws for 14”...
  • Page 24 8.0 - REPAIR PROCEDURE FLOWCHART – AUDIO CIRCUIT Without sound Models CR20310/29411 Check IC101 IC101 pin 43 C404 Signal. OK ? Models CR14300/20300 Check: IC450 pin 6 Connect the AV and 47 signals. Input signal. OK ? OK ? IC101 pin 28 C404 Signal .
  • Page 25 All manuals and user guides at all-guides.com 8.1 – REPAIR PROCEDURE – HORIZONTAL CIRCUIT START Is there VCC Check the VCC in the power supply pins 14/39/54/56/61? IC101 pin 33 Check Signal. X101 or IC101 OK ? Check : Q702: Collector voltage. R715, R716, C716 and T702 OK ?
  • Page 26 All manuals and user guides at all-guides.com 8.2 – REPAIR PROCEDURE FLOWCHART – POWER SUPPLY CIRCUIT- Stand by mode Start Check:: IC 101 Stand by power horizontal flowchart Check : TH901 Is F901 Check: C909 open? Voltage.OK ? Check: TH901, IC901 and Q901 Verificar Check in which...
  • Page 27 All manuals and user guides at all-guides.com 8.3 – REPAIR PROCEDURE FLOWCHART – TUNER TV doesn’t TUNE IN Check: Tuner Check: R206, Pins 4 and 5 . R207, IC101 and OK ? IC102 Check: tuner supply voltage. Fix the fault OK ? Replace tuner...
  • Page 28 All manuals and user guides at all-guides.com 8.4 – REPAIR PROCEDURE FLOWCHART – POWER SUPPLY - MAIN CIRCUIT TV DOESN´T TURN ON Check: IC101 Fix the voltage pins14/39/54 supply /56/61 (supply voltage). OK ? Check Q904 signal. Check: IC 101, Q904 and R927 OK ? Check:...
  • Page 29 All manuals and user guides at all-guides.com 8.5 – REPAIR PROCEDURE FLOWCHART - SAP CIRCUIT WITHOUT Check or Check: IC101 pin 28 replace signal. IC101 / C404 OK ? Check or replace Check: IC430 pin 4 Q430/ C432 / R433 signal.
  • Page 30 All manuals and user guides at all-guides.com 8.6 – REPAIR PROCEDURE FLOWCHART – VERTICAL CIRCUIT Vertical closed IC601 pins 4 Check: VCC and 6 +12 and -12 voltage. OK? Yoke Fix the fault Connected ? IC101 pins IC601 pins 1 21 and 22 and 7 signals?
  • Page 31 All manuals and user guides at all-guides.com 8.7 – REPAIR PROCEDURE FLOWCHART – VIDEO AND CHROME CIRCUIT CHROME AND VIDEO Check: IC101 pin 38, video pack IC101 signal. OK ? Check: IC101 pin 40 Check: C301 (same signal pin 38). OK ? Check: AV external video...
  • Page 32 All manuals and user guides at all-guides.com 9 – WAVEFORMS IC101 – pin 22 one chip 0.78Vpp 5 ms IC101 – pin 21 one chip 0.5 Vpp 5 ms IC601 – pin 7 Vertical 63Vpp 5 ms IC901 – pin 13 Power 11.5Vpp 5µ...
  • Page 33 All manuals and user guides at all-guides.com IC101 – pin 40 0.6Vpp 20 µ IC101 – pin 38 one chip 1.5VPP 20µ s IC101 – pin 33 0.95Vpp 20µ s IC101 – pin 34 one chip 5.7 Vpp 20 µ s...
  • Page 34 All manuals and user guides at all-guides.com Q702 collector pin 100Vpp 20µ Q701 base pin 10Vpp 20µ s IC101 one chip – Pin 53 – B 4.5 Vpp 20 µ s IC101 one chip – Pin 52 – G 3.8Vpp 20 µ...
  • Page 35 All manuals and user guides at all-guides.com IC101 one chip – Pin 51 – R 4.5Vpp 20µ s CRT Socket – Pin 6 – G-K 98Vpp 20 µ s CRT Socket – Pin 11 – B 98Vpp 20 µ s CRT Socket –...

  • Page 36: Replacement Parts

    All manuals and user guides at all-guides.com REPLACEMENT PARTS CR14300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C331 T0000641 600763662000 CAP ELECT 10UF 50V CR14300 C334 C / P...
  • Page 37 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR14300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C610 T0000632 647984125004 CAP CERAM SMD 100NF 25V C831 T0000653...
  • Page 38 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR14300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C946 T0000656 642463826003 CAP CERAM 470PF 500V Y5P IC601 T0000768...
  • Page 39 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR14300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description Q831 T0000727 462162287001 TRANSISTOR 250V 50MA R307 N / A...
  • Page 40 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR14300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R505 C / P 660400475009 RES CARBON 100R 5% R815A...

  • Page 41: Included Accessories

    4607A9793005 DIODE ZENER 43V 0.5W 5% ZD908 T0000756 4607A9794001 DIODE ZENER 47V 0.5W 5% Instrument/Cabinet Parts BACK01 N / A 5401D2728020 CR14300 BACK COVER BOB1 T0000759 3205A9948018 14" DEGAUSS COIL BUTT01 N / A 5401A8987019 FUNCTION BUTTON CRT01 N / A...
  • Page 42 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C331 T0000641 600763662000 CAP ELECT 10UF 50V CR20300 C334 C / P 600463713004 CAP ELECT 47UF 25V Electrical Parts...
  • Page 43 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C611 T0000632 647984125004 CAP CERAM SMD 100NF 25V C831 T0000653 6375A3165002 CAP CERAM SMD 220PF 50V C612...
  • Page 44 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C945 T0000677 6490A3184005 CAP CERAM SMD 22NF 50V IC490 T0000700 461116888006 IC CD4052 DUAL 4 CHAN MUX/DEMUX...
  • Page 45 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description Q830 T0000726 462288363007 TRANSISTOR NPN-300V R305 N / A 6666A5290009 RES SMD 47R 5% 63MW 100MA (2SC3271) R306...
  • Page 46 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R506 C / P 660400475009 RES CARBON 100R 5% R815 C / P 660985299006 RES CARBON 1.5K 10% 0.5W...
  • Page 47 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20300 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description SW101 T0000739 4301A5983002 SWITCH TACT Q901B N / A 212160746009 WASHER PR 3.2X5.5X0.8 SW102 T0000739...
  • Page 48 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C331 T0000641 600763662000 CAP ELECT 10UF 50V CR20310 C334 C / P 600463713004 CAP ELECT 47UF 25V Electrical Parts...
  • Page 49 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C467 T0000645 647984670002 CAP CERAM SMD 47NF 25V C604 T0000632 647984125004 CAP CERAM SMD 100NF 25V C468...
  • Page 50 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C801 T0000666 644263745003 CAP CERAM 4.70NF Z5U C936 T0000639 6490A3173004 CAP CERAM SMD 1NF 50V 900VAC C802...
  • Page 51 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description D918 T0000683 460261728004 DIODE 75V 150MA (1N4531) Q401 T0000723 462784409002 TRANSISTOR SMD NPN 50V D919 T0000689...
  • Page 52 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R126 N / A 6666A5326008 RES SMD 22K 5% 63MW R404 N / A 6666A5321006...
  • Page 53 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R601 C / P 660400479004 RES CARBON 220R 5% R824 C / P 660400490008 RES CARBON 1.8K 5%...
  • Page 54 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR20310 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description SW105 T0000739 4301A5983002 SWITCH TACT Q901C N / A 210160708000 SCREW M3X12 PAN SW106 T0000739...
  • Page 55 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C331 C / P 600763662000 CAP ELECT 10UF 50V CR29411 C332 T0000639 6490A3173004...
  • Page 56 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C461 C / P 600486450000 CAP ELECT 10UF 25V C495R C / P 601079541003 CAP ELECT 2.2UF 100V...
  • Page 57 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description C718 T0000657 900163747006 CAP CERAM 470PF Y5R 2KV C922 T0000657 900163747006 CAP CERAM 470PF Y5R 2KV C719...
  • Page 58 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description D702 T0000683 460261728004 DIODE 75V 150MA (1N4531) L102 T0000711 320184422009 COIL AXIAL 12UH 150MA D703 T0000683...
  • Page 59 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description Q830 T0000726 462288363007 TRANSISTOR NPN-300V R209 N / A 6666A5322002 RES SMD 10K 5% 63MW 100MA (2SC3271) R301...
  • Page 60 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R403 C / P 660400475009 RES CARBON 100R 5% R494 N / A 6666A5322002 RES SMD 10K 5% 63MW...
  • Page 61 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description R719 T0000732 6645D2210004 RES WIRE 3.3R 5% 5W R931 N / A 6666A5328000 RES SMD 33K 5% 63MW R720...
  • Page 62 All manuals and user guides at all-guides.com REPLACEMENT PARTS (Continued) CR29411 (See Product Safety Note on first page of this parts list) Symbol Stock Drawing Description Symbol Stock Drawing Description CABN02 N / A 2030D5093015 CR29411 PREPARED CABINET SET IC401A N / A 2030D1368018 AUDIO HEAT SINK SET...

  • Page 63: Servicing Notices On Checking

    All manuals and user guides at all-guides.com SERVICING NOTICES ON CHECKING 1. Keep the notices As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notice in the operation manual.
  • Page 64 All manuals and user guides at all-guides.com...
  • Page 65 All manuals and user guides at all-guides.com...

This manual is also suitable for:

Cr20300Cr20310Cr29411

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