Daewoo DTR-14D9ME Service Manual
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Daewoo DTR-14D9ME Service Manual

Daewoo DTR-14D9ME Service Manual

Chassis : cm-908s
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Service Manual

COLOR TELEVISION
CHASSIS : CM-908S
Model : DTR-14D9/20D9/21D9 ME/MP/MT/MZ
DTR-14D2/21D2 ME/MP/MT/MZ
DTR-1420/2120 ME/MP/MT/MZ
DTR-2131/2132 ME/MP/MT/MZ
MODEL OPTION LIST
MODEL
ME
MP
MT
MZ
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to PPL(Parts Price List)in
Service Information Center(http://svc.dwe.co.kr)
DAEWOO ELECTRONICS Corp.
http : //svc.dwe.co.kr
908
S/M No. : TCM
TEXT
PIP
O
O
X
O
O
X
X
X
Jan. 2004
SEF0

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Summary of Contents for Daewoo DTR-14D9ME

  • Page 1: Service Manual

    : In this Manual, some parts can be changed for improving. their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List)in Service Information Center(http://svc.dwe.co.kr) DAEWOO ELECTRONICS Corp. Jan. 2004 http : //svc.dwe.co.kr...

  • Page 2: Table Of Contents

    ABLE OF CONTENTS ABLE OF CONTENTS 1. SPECIFICATIONS 2. SAFETY INSTRUCTION 3. ALIGNMENT INSTRUCTIONS 4. ELECTRICAL PARTS LIST (Different Parts) 5. DIFFERENT PARTS 5-1. CRT INCH DIFFERENT PARTS OF CM-908S 5-2. FUNCTION DIFFERENT PARTS OF CM-908S 6. SCHEMATIC DIAGRAM 7. PRINTED CIRCUIT BOARD 8.

  • Page 3: Specifications

    1. SPECIFICATIONS Items Model DTR-14D9/20D9/21D9 ME/MP/MT/MZ DTR-14D2/21D2 ME/MP/MT/MZ DTR-1420/2120 ME/MP/MT/MZ DTR-2131/2132 ME/MP/MT/MZ TV Standard Color system PAL/SECAM, NTSC-4.43(AV) Sound system B/G, D/K, I Rated Voltage AC 110~250V, 50/60Hz Power consumption 14”=57W, 20”=69W, 21”=72W, 21”(Flat)=74W Sound Output Power 5W+5W(14”,20”), 7W+7W(21”,21”flat) VHF-L : IC1-S6CH (43.25MHz~140.25MHz) Channel Coverage VHF-H : IC1-S36CH (147.25MHz~423.25MHz) UHF : S37-C57CH(431.25MHz~863.25MHz)

  • Page 4: Safety Instruction

    2. SAFETY INSTRUCTION NOTE BEFORE SERVICING THIS CHASSIS READ THE “X-RAY RADIATION PRECAUTIONS”, “SAFETY PRECAUTIONS” AND “PRODUCT SAFETY NOTICE” BELOW. X-RAY RADIATION PRECAUTIONS 1. Excessive high voltage can produce potentially hazard- of the high voltage recorded as a part of the service ous X-RAY RADIATION.

  • Page 5: Alignment Instructions

    4. ALIGNMENT INSTRUCTIONS 14 inch 20 inch 21 inch 21" (FLAT) BARE ITEM REMARK SVC KEY DATA (CPT/1489DY) (OHPT/2050DY) (CPT) (LGPD/OEC) Heat-Run SCREEN Screen Adjust SOUND TEST PICTURE TEST BCL THR +00080 +00080 +00125 +00125 +00115 FIXED, Maximum Beam Current Limit BCL GAIN +00015 +00015...
  • Page 6 ALIGNMENT INSTRUCTIONS SVC KEY EXPLAIN (S5) BCL THD : MAX BEAM CURRENT ADJUST,DIFFERENT DATA FOR INCH. BCL GAIN : AVERAGE BEAM ADJUST. (S6) GEOMETRY : PAL (50Hz) adjust. AV NTSC is auto correction. ---> H-CENTER(-1),V-SIZE(0),V-CENTER(+600),V-LINEARITY(-6) S-CORRECTION(0),H-PALLEL(0) (S10) NORMAL : PICTURE NORMAL data setting. (SLEEP) : TXT CHECK ON LINE (SIZE) : GAME FUNCTION CHECK ON LINE (S11) OPTION...
  • Page 7 ALIGNMENT INSTRUCTIONS - If you decrease the SCR BRM value, the adjusted Screen Voltage will be increase. - Recommended SCR BRM Value : 420 20 (It will be changed for some particular CRT) 3-3. Press the “S2” button without any signal, then the Screen OSD bar is appeared with Blue-Back screen.
  • Page 8 ALIGNMENT INSTRUCTIONS 4.The adjustment of FOCUS 4-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B). 4-2. Adjust the picture to best distinct picture of 350 Line by revolve Focus Volume. 5.The adjustment of WHITE BALANCE 5-1. NITSUKI Setting : Set Nitsuki to the ‘Auto Mode’, Reference to the ‘B’, and System to the ‘PAL’. 5-2.
  • Page 9 ALIGNMENT INSTRUCTIONS 6-3. The adjustment of VERTICAL SIZE 6-3-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH). 6-3-2. Press the PR up/down Keys ( ) to select V-SIZE. Adjust with Vol Up/Down ( ) keys so that the upper and the lower of RETMA pattern may be located at the boundaries of the screen.
  • Page 10 ALIGNMENT INSTRUCTIONS 7. THE ADJUSTMENT OF SUB-PICTURE (SUB-BRIGHT,SUB-CONTRAST) 7-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B) 7-2. Press the [S9] KEY of SVC Remocon, BRM OSD wil be displayed. 7-3. The adjustment of SUB-BRIGHT 7-3-1. Press the PR up/down Keys ( ) to select SUB-BRIGHT in SUB-PICTURE MENU.
  • Page 11 ALIGNMENT INSTRUCTIONS 9. REMOCON 9-1. SERVICE REMOCON 9-2. USER REMOCON POWER RECALL MUTE ADD/ERASE SURROUND MENU POSITION PAUSE/ TV/VIDEO STILL SIZE SLEEP POSITION R-34SVC 9-3. SERVICE REMOCON 1) Enter SERVICE MODE : Press keys of User Remocon, as follows. Ch91, Sharpness 0, Skip(red), Move(green), Menu. 2) Choice SERVICE MENU : Pr-Up/Down 3) Enter SERVICE SUB MENU : Vol-Up/Down 4) Adjust SERVICE MENU : Vol-Up/Down...
  • Page 12 6. ELECTRICAL PA RT S L I S T DTC-21D9ME PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION ZZ100 TRANSMITTER REMOCON 48B4844C13 R-44C13 (AA) CC302 C CHIP CERA HCBK102KBA 50V X7R 1000PF K 1608 0100 BATTERY 4850Q00810 R6P/LN CC304 C CHIP CERA HCBK103KBA 50V X7R 0.01MF K 1608...
  • Page 13 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION RC107 R CHIP HRFT512JBA 1/10 5.1K OHM J 1608 RCP07 R CHIP HRFT221JBA 1/10 220 OHM J 1608 RC108 R CHIP HRFT221JBA 1/10 220 OHM J 1608 ZZ200 PCB MAIN (RHU) AS...
  • Page 14 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION PD01 CONN WAFER 485923162S YW025-03 (STICK) C802 C CERA CCXF3A472Z 1KV F 4700PF Z (T) R308 R M-OXIDE FILM RS02Z221JS 2W 220 OHM J SMALL C803 C CERA CCXF3A472Z...
  • Page 15 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION Q899 TKTC3198Y- KTC3198Y D803 DIODE DLT2A05G— LT2A05G (TP) QA01 TKTC3198Y- KTC3198Y D804 DIODE DLT2A05G— LT2A05G (TP) QE01 TKTC3198Y- KTC3198Y D805 DIODE D1N4937G— 1N4937G (TAPPING) R824 R METAL FILM...
  • Page 16 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION J051 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING 0.05 J217 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING 0.05 J052 WIRE COPPER 85801065GY AWG22 1/0.65 TIN COATING 0.05 J218...
  • Page 17 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION PART CODE PART NAME DESCRIPTION L604 COIL PEAKING 5CPZ100K02 10UH K (AXIAL 3.5MM) R544 R CARBON FILM RD-AZ271J- 1/6 270 OHM J L701 COIL PEAKING 5CPZ100K02 10UH K (AXIAL 3.5MM) R545 R CARBON FILM RD-AZ101J-...
  • Page 18 ELECTRICAL PA RT S L I S T PART CODE PART NAME DESCRIPTION RP01 R CARBON FILM RD-AZ102J- 1/6 1K OHM J RP02 R CARBON FILM RD-AZ102J- 1/6 1K OHM J RP03 R CARBON FILM RD-AZ101J- 1/6 100 OHM J RP04 R CARBON FILM RD-AZ101J-...

  • Page 19: Crt Inch Different Parts Of Cm-908S

    5-1. CRT INCH DIFFERENT PARTS CM-908S 21" 14" 20" 21"F ASSY Part Name REMARK (BOM : CPT) (BOM : OHPT) (BOM : CPT) (BOM : LGPD) Part Code Part Description Part Code Part Description Part Code Part Description Part Code Part Description ZZ131 CRT GROUND NET 48519A4710...

  • Page 20: Function Different Parts Of Cm-908S

    5-2. FUNCTION DIFFERENT PARTS CM-908S 1. PIP Different Parts FUNCTIONS REMARK With PIP Without PIP - ME/MEF : PIP, TXT DTR - xxxx ME/MEF DTR - xxxx MT/MTF - MP/MPF : PIP only Applied Models DTR - xxxx MP/MPF DTR - xxxx MZ/MZF - MT/MTF : TXT only - MZ/MZF : Not Support PIP &...
  • Page 21 6. Schmetic Diagram -20-...

  • Page 22: Printed Circuit Board

    7. Printed Circuit Board -21-...
  • Page 23 ABS GY MATERIAL REMARKS PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS K.G.S DEVELOPMENT DWG SCALE 02/02/18 DTD-14D 9MZ Daewoo Electronics CO.,LTD. MODEL 485009 KC Team 4, TV Research Center REFERENCE CM-90 -22-...
  • Page 24 PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS GJ YANG DEVELOPMENT DWG SCALE MODEL DTD-20D9 DAEWOO Electronics CO.,LTD. 485009KE Mechani c al Desi g n Team, TV Research Center REFERENCE CM-90 7S -23-...
  • Page 25 BUTTON POWER ABS GY MATERIAL REMARKS PART CODE PART NAME Q’ty Designed by Checked by Inspected by Approved by PART NAME UNITS y.k.park DEVELOPMENT DWG SCALE MODEL DTD-21D9 DAEWOO Electronics Corp. 485009LA Mechanical Design Team, TV Research Center REFERENCE CM-907S -24-...
  • Page 26 HIPS GY PART CODE PART NAME MATERIAL REMARKS Q’ty Designed by Checked by Inspected by Approved by ASSY NAME UNITS Y.W.KANG S.D.PARK DEVELOPMENT DWG(1/1) SCALE MODEL DTC/DTD-2131 DAEWOO Electronics Corp. 485009JY Mechanical Design Team, TV Research Center REFERENCE CM-907S -25-...

  • Page 27: Ic Description

    9. IC DESCRIPTION VCT 38xxA/B 1. Introduction The VCT 38xxA/B family offers a rich feature set, cov- The VCT 38xxA/B is an IC family of high-quality single- ering the whole range of state-of-the-art 50/60-Hz TV chip TV processors. Modular design and a submicron applications.
  • Page 28 IC DESCRIPTION VCT 38xxA/B VCT 38xxA/B 3. Pin Configuration VSUPP1 GNDP1 RESQ XTAL2 XTAL1 GNDS VIN5/P10 VSUPS VOUT AOUT1 AOUT2 SGND AIN1 GNDAF AIN2 VUSPAF AIN3 CBIN XREF CIN1 CIN2/CRIN VIN1 GNDAB VIN2 VSUPAB BOUT VIN3 GOUT VIN4 ROUT TEST SVMOUT HOUT RSW2...
  • Page 29 IC DESCRIPTION VCT 38xxA/B 4. Pin Connections and Short descriptions NC=not connected IN=Input LV=if not used, leave vacant OUT=Output X=obligatory;connect as described in circuit diagram SUPPLY=Supply Pin Pin No. PSDIP Pin Name Type Connection Short Description 64-pin (if not used) IN/OUT Port 1, Bit 7 IN/OUT...
  • Page 30 IC DESCRIPTION VCT 38xxA/B Pin No. PSDIP Pin Name Type Connection Short Description 64-pin (if not used) VERT Differential Vertical Sawtooth Output Vertical Parabola Output SENSE Sense ADC Input GNDM SUPPLY Ground, MADC Input RSW1 Range Switch1 for Measurement ADC RSW2 Range Switch2 for Measurement ADC SVMOUT...
  • Page 31 IC DESCRIPTION VCT 38xxA/B 5. Pin Descriptions for PSDIP64 package Pin 23, TEST Test Input (Fig. 6–5) This pin enables factory test modes. For normal opera- tion, it must be connected to ground. Pin 1,2,5-10, P17 P10 I/O Port (Fig. 6–27) These pins provide CPU controlled I/O ports.
  • Page 32 IC DESCRIPTION VCT 38xxA/B Pin 35, VERT Vertical Sawtooth Output (Fig. 6–20) Pin 48, XREF DAC Current Reference (Fig. 6–24) This pin supplies the drive signal for the vertical output External reference resistor for DAC output currents, stage. The drive signal is generated with 15-bit preci- typical 10 k ߟ...
  • Page 33 IC DESCRIPTION VCT 38xxA/B 6. Pin Circuits VSUP VSUP To ADC Fig. 6-5 : Input pins TEST, DISINTROM Fig. 6-9 : Input pins VIN1-VIN5 VSUP VSUP To ADC Fig. 6-10 : Input pins CIN1-CIN2 Fig. 6-6 : Input/Output pins RESQ, SDA, SCL VSUP VSUP To ADC...
  • Page 34 IC DESCRIPTION VCT 38xxA/B VSUP VSUP Clamping Fig. 6-14 : Input pins RIN, GIN, BIN Fig. 6-19 : Output pin INTLC VSUP Flyback Bias VERTQ Fig. 6-15 : Output pin ROUT, GOUT, VERT BOUT, SVMOUT Fig. 6-20 : Output pins VERT, VERTQ Fig.
  • Page 35 IC DESCRIPTION VCT 38xxA/B VSUP VSUP s Fig. 6-23 : Input pins SENSE Fig. 6-28 : Input pins P42-P46 VSUP ref. current int. ref. XREF voltage VSUP Fig. 6-24 : Supply pins XREF, VRD 40 k 2.5V Fig. 6-29 : Outpin pins ADB0-ADB18, OE1, OE2, WE1, WE2 Fig.
  • Page 36 IC DESCRIPTION TDA8946J 1. Block Diagram V CC1 V CC2 OUT1- IN1- IN1+ OUT1+ TDA8946J OUT2- IN2- IN2+ OUT2+ V CC STANDBY/ MODE MUTE LOGIC SHORT CIRCUIT TEMPERATURE PROTECTION MBK929 GND1 GND2 -35-...
  • Page 37 IC DESCRIPTION TDA8946J 2. Block Diagram 2-1 Pinning OUT1- GND1 V CC1 OUT1+ n.c. IN1+ n.c. IN1- TDA8949J IN2- MODE IN2+ OUT2+ GND2 V CC2 OUT2- MBK932 2-2 Pin description Symbol Description OUT1- negative loudspeaker terminal 1 GND1 ground channel 1 supply voltage channel 1 OUT1+ positive loudspeaker terminal 1...
  • Page 38 IC DESCRIPTION TDA7442D 4STEREOINPUTS INPUTATTENUATIONCONTROLIN0.5dB STEP TREBLEANDBASSCONTROL TWOSURROUNDMODEAVAILABLEWITH 4SELECTABLERESPONSES: - MUSIC - SIMULATEDSTEREO TWOSPEAKERATTENUATORS: - 2INDEPENDENTSPEAKERCONTROLS IN1dBSTEPSFORBALANCEFACILITY - INDEPENDENTMUTEFUNCTION SDIP32 ALLFUNCTIONSPROGRAMMABLEVIASE-RIALBUS 2MONITOROUTPUT(ONLYFORTDA7442) R-IN2 R-IN3 R-IN1 R-IN4 MONITOR(L) L-OUT MONITOR(R) R-OUT L-IN1 AGND L-IN2 L-IN3 CREF L-IN4 MUXOUT(L) IN(L) DIGGND MUXOUT(R) TREBLE-R N.C.
  • Page 39 IC DESCRIPTION TDA7442D BLOCK DIAGRAM(TDA7442D) -44-...
  • Page 40 IC DESCRIPTION TDA7442D TDA7442 - TDA7442D PIN: TREBLE-L, TREBLE-R PIN: VOUT REF 20µA 20µA D95AU233A D95AU309 PIN: L-IN, R-IN, L-IN2, R-IN2, L-IN3, R-IN3, PIN: CREF L-IN4, R-IN4, 20µA 20µA D95AU336 D94AU200 PIN: SCL, SDA PIN: LP 20µA 20µA D94AU205 D95AU308 -45-...
  • Page 41 IC DESCRIPTION TDA7442D PIN: BASS-LI,BASS-RI PIN: L-OUT, R-OUT 20µA 20µA : Bass BASS-LO BASS-RO D98AU949 D95AU230 PIN: BASS-LO,BASS-RO 20µA BASS-LI,BASS-RI D98AU950 -46-...
  • Page 42 IC DESCRIPTION TEA5101B BANDWIDTH : 10MHz TYPICAL RISE AND FALL TIME : 50ns TYPICAL CRT CATHODES CURRENT OUTPUTS FOR PARALLEL OR SEQUENTIAL CUT-OFF OR DRIVE ADJUSTMENT FLASHOVER PROTECTION POWER DISSIPATION : 3.5W ESD PROTECTED BLUE FEEDBACK BLUE CATHODE CURRENT BLUE OUTPUT GREEN FEEDBACK GREEN CATHODE CURRENT GREEN OUTPUT...
  • Page 43 PIN FUNCTION Function Description Blue Input Input of the “blue” amplifier. It is a virtual ground with 3.8V bias voltage, 15 microamperss input bias current with 14KΩ input resistance. Low voltage power supply, typically 12V. Green Input See Pin 1. Red Input See Pin 1.
  • Page 44 IC DESCRIPTION APPENDIX 6. STR-W6753...
  • Page 45 IC DESCRIPTION APPENDIX...
  • Page 46 IC DESCRIPTION APPENDIX...
  • Page 47 IC DESCRIPTION APPENDIX...
  • Page 48 IC DESCRIPTION APPENDIX...
  • Page 49 IC DESCRIPTION APPENDIX...

  • Page 50: Trouble Shooting Charts

    10. TROUBLE SHOOTING CHART S 1. NO RASTER CHECK MAIN B+(123V) NORMAL ABNORMAL CHECK VOLTAGE CHECK HEATER VOLTAGE OF C804(180UF) VIDEO B+(180V) LINE 295VDC AT AC 220V 27V & 13.5V NORMAL NORMAL ABNORMAL ABNORMAL CHECK/ REPLACE CHECK/REPLACE CHECK Horizontal F801 I801 plose AT PIN 24 OF I501 (STR-F6656)
  • Page 51 TROUBLE SHOOTING CHART S 2. NO PICTURE(RASTER OK) CHECK SIGNAL AT PIN 19 OF I501 NORMAL ABNORMAL CHECK SIGNAL AT PIN CHANGE INPUT MODE 42, 43, 44, OF I501 RF --> AV --> RF NORMAL ABNORMAL CHECK VOLTAGE AT PIN CHANGE SIGNAL 45 OF I501 CVBS OF TUNER...
  • Page 52 TROUBLE SHOOTING CHART S 3. NO COLOR ABNORMAL CHECK SIGNAL AT REFER TO 19TH PIN OF I501 NO PICTURE NORMAL CHANGE THE SYSTEM CHECK / REPLACE PAL ---> SECAM CVBS OF TUNER CHECK R,G,B SIGNAL 42,43,44TH OF I501 CHECK / REPLACE Q502,Q503,Q504,Q505 CHECK CRT BLOCK...
  • Page 53 TROUBLE SHOOTING CHART S 4. NO PICTURE CHECK NORMAL CHECK SIGNAL AT R,G,B 19TH PIN OF I501 OF I501 ABNORMAL CHANGE INPUT MODE CHECK / REPLACE RF ->AV ->RF Q502,Q503,Q504,Q505 CHECK SIGNAL AT CHECK / REPLACE CVBS OF TUNER SCL, SDA, B+ OF TUNER CHECK CHECK SIGNAL AT...
  • Page 54 TROUBLE SHOOTING CHART S 5. NO VERTICAL SCANNING(ONE HORIZONTAL LINE RASTER) CHECK DY CONNECTOR CHECK / REPLACE ABNORMAL D410, D301 CHECK INPUT 27V LINE, 13V LINE VOLTAGE OF I301 NORMAL ABNORMAL CHECK CHECK VERTICAL INPUT 35TH PIN OF I501 (Vin) OF I301 ABNORMAL CHECK / REPLACE CHECK / REPLACE...
  • Page 55 TROUBLE SHOOTING CHART S 6. NO MIAN SOUND (PICTURE) CHECK VOLTAGE AT PIN OF I601 ABNORMAL NORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 1,2,14,17 OF I601 D814 NORMAL ABNORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 6,12 OF I601 P602A, P602B NORMAL ABNORMAL...
  • Page 56 TROUBLE SHOOTING CHART S 7. NO EXTERNAL AV(RF OK) CHECK CONNECTION of AV1, AV2, DVD1, DVD2 ABNORMAL CHECK SIGNAL AT PIN CHECK / REPLACE 20, 21, 22, 16, 17, 18 OF I501 Q583, Q584, Q585, Q586 NORMAL CHECK SIGNAL AT PIN R,G,B,42,43,44 OF I501 -61-...
  • Page 57 TROUBLE SHOOTING CHART S 8.REMOTE CONTROL UNIT TROUBLE CHECK ABNORMAL REPLACE BATTERY AND LED BATTERY OF REMOCON NORMAL ABNORMAL CHECK IR OF PREAMP AND REPLACE PREAMP IC(IF01) VCC OF PREAMP IC(IF01) NORMAL CHECK/REPLACE 8TH PIN OF I501 -62-...

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