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Daewoo Color Television Service Manual

Chassis : cp-185n and cp-185c
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Service Manual

Color Television
CHASSIS : CP-185N and CP-185C
Specification
Version
TV Standard
Sound system
Power consumption
Speaker
Teletext system
Aerial Input
Channel coverage
Tuning system
Visual screen size
Channel indication
Program selection
Auxiliary Outpup Terminal
Remote control
DAEWOO ELECTRONICS CO., LTD
http://svc.dwe.co.kr
S/M No. : TCP185C/NEF
Pal multi system
PAL-SECAM B/G, D/K, H, I/I (NTSC : AV Only)
Mono
* 1 Speaker
14":49W / 20":60W / 21" 68W
* 2Speaker
14":57W / 20":64W / 21":74W
3W 8 Ohm o 7.5W 8 Ohm
Option
75 Ohm unbalanced
off-air channels, S-cable channels and hyperband
Ferquency synthesiser tuning system
14":34cm
20':48cm
21":51cm
On screen display
100 Programmes
RCA jack : Audio input and Vidio input
ERUO SCART Jack : Audio/Video and R/G/B input.
Sloe and fast swtching, SVHsin
Audio - Video jack on front of cabinet in common
connection with EURO-SCART
Headphone jack on front of cabinet
R-40A10 (None teletext)
AAA Battery type
R-40A01(With teletext)
AAA Battery type
R-44C05(With teletext)
AA Battery type
Sep. 2001

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Summary of Contents for Daewoo Color Television

  • Page 1: Service Manual

    Audio - Video jack on front of cabinet in common connection with EURO-SCART Headphone jack on front of cabinet R-40A10 (None teletext) AAA Battery type Remote control R-40A01(With teletext) AAA Battery type R-44C05(With teletext) AA Battery type DAEWOO ELECTRONICS CO., LTD http://svc.dwe.co.kr Sep. 2001...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY INSTRUCTION SPECIFICATIONS 21 Pin EURO-SCART CIRCUIT BLOCK DIAGRAM ALIGNMENT INSTRUCTIONS 1. Service mode 2. Microcontroller configuration 3. TV SET Alignment SCHEMATIC DIAGRAM EXPLODED VIEW 8~10 PRINTED CIRCUIT BOARD SERVICE PARTS LIST 12~23 The different parts list APPENDIX (Appendix is provide only by internet [http://svc.dwe.co.kr]) FUNCTIONAL DESCRIPTION IC DESCRIPTION...

  • Page 3: Safety Instruction

    SAFETY INSTRUCTION WARNING : Only competent service personnel may carry out work involving the testing or repair of this equipment X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of this receiver is 22-23 kV (14")or 24-26 kV (20"-21")at max beam current.

  • Page 4: Specifications

    SPECIFICATIONS 21Pin EURO-SCART SIGNAL DESCRIPTION MATCHING VALUE Audio Output Right 0.5 Vrms, Impedance < 1k , (RF 54% Mod) Audio Input Right 0.5Vrms, Impedance > 10k Audio Output Left 0.5 Vrms, Impedance < 1k , (RF 54% Mod) Audio Earth Blue Earth Audio Input Left 0.5Vrms, Impedance >...

  • Page 5: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM...

  • Page 6: Alignment Instructions

    Press "OK" again to allow the microcontroller to control the set again Microcontroller configuration : Tuner Option Option Tuner maker DAEWOO / SAMSUNG LIPS (tuner internal AGC ) PHILIPS ( Video processor AGC ) TV set Alignment 1 - G2 alignment - Set TV in NORMAL I mode - TV in AV mode without video signal ? Black screen.
  • Page 7 - Adjust H Shift to have the picture in the center of the screen. 7 - AGC - Adjust the antenna signal level to 68dBµV 2 for Daewoo tuner (63dBµV 1 for Philips tuner) - Set RF AGC to 0.

  • Page 9: Exploded View

    EXPLODED VIEW 1. 14V3...
  • Page 10 EXPLODED VIEW 2. 20V3...

  • Page 11: Exploded View

    EXPLODED VIEW 3. 21V3...

  • Page 13: Service Parts List 12~23

    ELECTRICAL PARTS LIST CAUTION is safety part, so it must be used the same part. “ ” is a recommendable part for essential stock. PART CODE PART NAME DESCRIPTION REMARK ZZ100 48B3740A10 TRANSMITTER REMOCON R-40A10 ZZ110 PTACPWD434 ACCESSORY AS DTA-20V1MZ 00100 4850Q00910 BATTERY...
  • Page 14 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK C808 CH1AFE222M C CERA AC 4KV 2200PF M KX DE1210 D707 DSML1216W- SML1216W D807 DRGP30J—- DIODE RGP30J F801 5FSGB4022L FUSE GLASS TUBE SEMKO TL 4A 250V MF51 G901 4SG0DX0001 SPARK GAP SSG-102-A1(1.0KV) G902 4SG0DX0001...
  • Page 15 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK T401 50D10A3—- TRANS DRIVE TD-10A3 T402 50H0000211 1142.5109 T802 50M4042A7- TRANS SMPS TSM-4042A7 U100 4859721530 TUNER VARACTOR DT5-BF18D N X502 5XE12R000E CRYSTAL QUARTZ HC-49/U 12.00000MHZ 30PPM Z501 5PYXT5R5MB FILTER CERA XT 5.5MB Z502 5PYXT6R5MB FILTER CERA...
  • Page 16 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK E102 4856310600 EYE LET BSR T0.2 (R2.3) E103 4856310600 EYE LET BSR T0.2 (R2.3) E104 4856310600 EYE LET BSR T0.2 (R2.3) E105 4856310600 EYE LET BSR T0.2 (R2.3) E106 4856310600 EYE LET BSR T0.2 (R2.3) E107 4856310600...
  • Page 17 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK C502 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP C504 CMXM2A332J C MYLAR 100V 3300PF J (TP) C509 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP C511 CMXM2A104J C MYLAR 100V 0.1MF J (TP) C512 CMXM2A104J C MYLAR...
  • Page 18 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK Q403 TKTC3198Y- KTC3198Y Q501 TKTA1266Y- KTA1266Y (TP) Q502 TKTC3198Y- KTC3198Y Q503 TKTC3198Y- KTC3198Y Q510 TKTA1266Y- KTA1266Y (TP) Q511 TKTA1266Y- KTA1266Y (TP) Q520 TKTC3198Y- KTC3198Y Q531 TKTA1266Y- KTA1266Y (TP) Q805 TKTC3205Y- KTC3205Y (TP) Q807 TKTA1266Y- KTA1266Y (TP)
  • Page 19 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK C591 CZCH1H270J C CERA CH 50V 27PF J AXL 52MM C602 CCZF1H103Z C CERA 50V F 0.01MF Z C771 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z CA01 CCZB1H101K C CERA 50V B 100PF K (AXIAL) CA02 CCZB1H101K...
  • Page 20 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK DA06 DUZ5R6BM— DIODE ZENER UZ-5.6BM DA08 DUZ5R6BM— DIODE ZENER UZ-5.6BM DA09 DUZ5R6BM— DIODE ZENER UZ-5.6BM DA10 DUZ5R6BM— DIODE ZENER UZ-5.6BM DA13 DUZ5R6BM— DIODE ZENER UZ-5.6BM DA27 DUZ5R6BM— DIODE ZENER UZ-5.6BM J001 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING...
  • Page 21 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK J047 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J048 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J049 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J050 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J051 85801065GY WIRE COPPER...
  • Page 22 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK R401 RD-4Z472J- R CARBON FILM 1/4 4.7K OHM J R404 RD-2Z751J- R CARBON FILM 1/2 750 OHM J R405 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R406 RD-AZ473J- R CARBON FILM 1/6 47K OHM J R420 RD-AZ102J-...
  • Page 23 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK R575 RD-AZ272J- R CARBON FILM 1/6 2.7K OHM J R580 RD-AZ561J- R CARBON FILM 1/6 560 OHM J R585 RD-4Z224J- R CARBON FILM 1/4 220K OHM J R586 RD-AZ221J- R CARBON FILM 1/6 220 OHM J R591 RD-AZ221J-...
  • Page 24 ELECTRICAL PARTS LIST PART CODE PART NAME DESCRIPTION REMARK R829 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R830 RD-AZ151J- R CARBON FILM 1/6 150 OHM J R831 RD-4Z100J- R CARBON FILM 1/4 10 OHM J R901 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R902 RD-AZ102J-...

  • Page 25: The Different Parts List

    DIFFERENT PART LIST PART NAME 14 INCH 20 INCH CPT CRT 20 INCH ORING CRT 21 INCH C404 C MYLAR 1.6KV 7500PF 1.6 KV 9100PF 1.6KV 8200PF 1.6KV 7500PF C408 C MYLAR 200V 0.62µF 200V 0.47µF 200V 0.43µF 200V 0.47µF 1803 IC ERROR AMP DP123...
  • Page 26 DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : “DAEWOOELEC” E-mail : djkoo@web.dwe.co.kr TEL : 82-2-360-7806 FAX : 82-2-360-7877...

  • Page 27: Functional Description 1~6

    APPENDIX FUNCTIONAL DESCRIPTION For CP-185C/N FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR Vision IF amplifier The vision IF amplifier can demodulate signals with positive and negative modulation. The PLL demodulator is completely alignment-free. The VCO of the PLL circuit is internal and the frequency is fixed to the required value by using the clock frequency of the µ-Controller/Teletext decoder as a reference.

  • Page 28: Functional Description Ic Description

    FUNCTIONAL DESCRIPTION APPENDIX The vertical synchronisation is realised by means of a divider circuit. The vertical ramp generator needs an external resistor and capacitor. For the vertical drive a differential output current is available. The outputs are DC coupled to the vertical output stage.
  • Page 29 FUNCTIONAL DESCRIPTION APPENDIX RGB output circuit and black-current stabilization In the RGB control circuit the signal is controlled on contrast, brightness and saturation. The ICs have a linear input for external RGB signals. The signals for OSD and text are internally supplied to the control circuit. The output signal has an amplitude of about 2 Volts black-to-white at nominal input signals and nominal settings of the various controls.

  • Page 30: Source Switching

    FUNCTIONAL DESCRIPTION APPENDIX For SECAM L and L' the TDA9361/TDA9381 is switched to positive modulation via I2C bus. SECAM L' transmission only occur in VHF band I and have their picture and sound carrier interchanged, compared to SECAM L and PAL B/G channels.
  • Page 31 FUNCTIONAL DESCRIPTION APPENDIX Fast R, G, B insertion : The external R, G, B insertion needs a fast switching and cannot be controlled by the software (instruction cycle of 1µ sec). The fast switching pin 16 of SCART is directly connected to the TV processor pin 45 ( Fast blanking input ).

  • Page 32: Sound Amplification

    FUNCTIONAL DESCRIPTION APPENDIX 5. SECAM L/L' sound switching circuit. The microcontroller pin 4 is a three levels output. The voltage and configuration of this port is described below : Sound mode Port configuration Voltage Push Pull Internally shorted to ground AM L Push Pull Pull up to 3.3V...

  • Page 33: Ic Description 7~20

    IC DESCRIPTION APPENDIX 1. TDA9361 : TV signal processor - Teletext decoder with embedded µ-Controller. TDA9381 : TV signal processor - with embedded µ-Controller. TV-signal Processor • Multi-standard vision IF circuit with alignment-free PLL demodulator • Internal (switchable) time-constant for the IF-AGC circuit •...

  • Page 34: Data Capture

    IC DESCRIPTION APPENDIX Data Capture • Text memory 10 pages • Inventory of transmitted Teletext pages stored in the Transmitted Page Table (TPT) and Subtitle Page Table (SPT) • Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit decoding Automatic selection between 525 WST/625 WST •...
  • Page 35 IC DESCRIPTION APPENDIX Data Capture Features - Video Signal Quality detector - Data Capture for 625 line WST - Data Capture for 525 line WST - Data Capture for US Closed Caption - Data Capture for VPS data (PDC system A) - Data Capture for Wide Screen Signalling (WSS) bit decoding - Automatic selection between 525 WST/625WST - Automatic selection between 625WST/VPS on line 16 of VBI...
  • Page 36 IC DESCRIPTION APPENDIX...

  • Page 37: Ic Marking And Version

    IC DESCRIPTION APPENDIX IC marking and version Chassis IC marking (line 3) OSD languages Text CP 185 DW9361/N1/3-DE1 English, Russian English, Russian (note : x is the software version) Arabic, Melayu Arabic, Melayu CP 185N/C DW9381/N3-DE1 English, Russian, Arabic (note : x is the software version) Melayu, Thailand, HIND PINNING SYMBOL...
  • Page 38 IC DESCRIPTION APPENDIX SYMBOL DESCRIPTION IFIN1 IF input 1 IFIN2 IF input 2 IREF Reference current input vertical sawtooth capacitor TUNERAGC tuner AGC output AUDEEM audio deemphasis DECSDEM decoupling sound demodulator GND2 ground 2 for TV processor SNDPLL narrow band PLL filter SNDIF n.u.
  • Page 39 IC DESCRIPTION APPENDIX...
  • Page 40 IC DESCRIPTION APPENDIX 2. TDA-7267A • Can deliver 3w the 10% 14.5V/8 • Internal fixed gain 32dB • No feedback capacitor • No boucherot cell • Thermal protection • Ac short circuit trotection PowerDIP 8+8 • Svr capacitor for better ripple Rejection •...
  • Page 41 IC DESCRIPTION APPENDIX ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value unit Operating Supply Voltage Output Put Peak Current Operating Temperature Range 0 to 70 ºC Junction Temperature ºC Storage Temperature Range -40 to 125 ºC PIN CONNECTION (Top View) Rth with "on Board" Square heat Sink vs. Copper Area Example of heatsink using PC board copper...
  • Page 42 IC DESCRIPTION APPENDIX THERAML DATA Symbol Parameter Value unit Thermal Rasistance junction to ambient ºC/W th j-amb Thermal Resistance Junction to case ºC/W th j-case ELECTRICAL CHARACTERISTICS (Tamb = 25ºC; Vs = 14.5V; RL=8 ; f=1KHz; nuless otherwise specified.) Symbol Parameter Test concition Min.

  • Page 43: Tda8357J Vertical Amplifier

    IC DESCRIPTION APPENDIX 3. TDA8357J Vertical Amplifier The TDA8357J is a power circuit for use in 90º TV systems for field frequencies of 25 to 200Hz and 16/9 picture tubes. The cir-cuit provides a DC driven vertical deflection output circuit, operating as a highly efficient class G system. Due to the full bridge output circuit the deflection coils can be DC coupled.
  • Page 44 IC DESCRIPTION APPENDIX Pinning Symbol Description input voltage (positive) i(pos) input voltage (negative) i(neg) supply voltage output voltage B ground flyback supply voltage output voltage A guard output voltage O(guard) input measuring resistor...

  • Page 45: Pin Description

    IC DESCRIPTION APPENDIX 4. TDA6107Q The TDA6107Q includes three video output amplifiers in one plastic DIL-Bent-SIL 9-pin medium power package, using high voltage DMOS technology, and is intended to drive the three cathodes of a colour CRT directly. To obtain maximum performance, the amplifier should be used with black-current control.

  • Page 46: C08 8 Kbit Eeprom

    IC DESCRIPTION APPENDIX 5. 24C08 8 Kbit EEPROM features : - 8 Kbit serial I2C bus EEPROM - Single supply voltage : 4.5 V to 5.5 V - 1 Million Erase/Write cycles (minimum) - 40 year data retention (minimum) Pin description Pin No.

This manual is also suitable for:

Cp-185nCp-185c20v1nts

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