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Daewoo DTR-1420ME, Service Manual

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Daewoo DTR-1420ME Service Manual Download Page 53

-5

8

-

TROUBLE SHOOTING CHARTS

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

HEATER VOLTAGE

R,G,B INPUT AND

R,G,B OUTPUT OF I901 &
12V LINE & 180V LINE

All manuals and user guides at all-guides.com

Summary of Contents for DTR-1420ME

Page 1: ...O X O X PIP O O X X MODEL OPTION LIST http svc dwe co kr 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 par...

Page 2: ...DIFFERENT PARTS OF CM 908S 20 6 SCHEMATIC DIAGRAM 21 7 PRINTED CIRCUIT BOARD 22 8 MECHANICAL EXPLODED VIEW AND PARTS LIST 23 9 IC DESCRIPTION 26 10 TROUBLE SHOOTING CHARTS 55 T TABLE OF CONTENTS ABLE...

Page 3: ...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 Tuning System FS Tuning System Program No Indication ON Screen Displ...

Page 4: ...age equipment 2 Always discharge the picture tube to avoid the shock harzard before removing the anode cap 3 Discharge the high potential of the picture tube before handling the tube The picture tube...

Page 5: ...00130 00130 00130 For Sub Brightness 00032 00032 00060 00060 00032 00032 00048 00048 00008 00008 ON ON OFF ON OFF ON 00020 OFF 32 don t care 400 420 420 420 430 For Screen adjusting 133V 133V 123V 123...

Page 6: ...Models CM 907S LATIN English French Swedish Czech German Spanish Italian Estonian EAST English Slovakian Hungarian Serbian Albanian Polish Turkian Rumanian RUSSIA English Russian Bulgaian Ukrainian Se...

Page 7: ...ed with Blue Back screen 3 4 Preparatory Focus G1 Alignmet You must try to Focus Alignment roughly for exact SCREEN alignmet 3 5 Adjust the Screen Volume of FBT in order that the RED OSD indicating Ba...

Page 8: ...Adjustment of White Balance 5 3 1 Receive Nitsuki signal 5 3 2 Adjust Picture to Normal mode 5 3 3 The Adjustment of High Beam Adjust R DRIVE and G DRIVE to R G B BAR come to center 5 3 4 The Adjustm...

Page 9: ...symmetrical 6 5 The adjustment of Vertical Linearity 6 5 1 Receive PAL CROSSHATCH pattern signal of company PAL B 5CH 6 5 2 Fix adjustment of Vertical Linearity after EEPROM presetting but it can be...

Page 10: ...2 3 step 8 THE ADJUSTMENT OF PIP 8 1 Receive PAL RETMA pattern signal of company PAL B 2CH and Color Bar 8 2 Press the S7 KEY of SVC Remocon PIP Adjustment OSD wil be displayed 8 3 Fix adjustment of...

Page 11: ...oice SERVICE MENU Pr Up Down 3 Enter SERVICE SUB MENU Vol Up Down 4 Adjust SERVICE MENU Vol Up Down S1 S2 S3 S4 S5 S6 S7 S8 S9 S11 RECALL S10 S12 MUTE POWER TV CATV ADD ERASE TV VIDEO SOUND MODE SURRO...

Page 12: ...ARTCODE PARTNAME DESCRIPTION QTY CC302 CCHIPCERA HCBK102KBA 50VX7R1000PFK1608 1 CC304 CCHIPCERA HCBK103KBA 50VX7R0 01MFK1608 1 CC306 CCHIPCERA HCBK103KBA 50VX7R0 01MFK1608 1 CC310 CCHIPCERA HCBK102KBA...

Page 13: ...HRFT152JBA 1 101 5KOHMJ1608 1 RCF76 RCHIP HRFT822JBA 1 108 2KOHMJ1608 1 LOC PARTCODE PARTNAME DESCRIPTION QTY RCP07 RCHIP HRFT221JBA 1 10220OHMJ1608 1 ZZ200 PCBMAIN RHU AS PTMPJ0D837 DTR 21D9ME 1 C10...

Page 14: ...1 C621 CELECTRO CEXF1H109V 50VRSS1MF 5X11 TP 1 C622 CELECTRO CEXF1E470V 25VRSS47MF 5X11 TP 1 C627 CELECTRO CEXF1H220V 50VRSS22MF 5X11 TP 1 C630 CELECTRO CEXF1H100V 50VRSS10MF 5X11 TP 1 C631 CELECTRO C...

Page 15: ...37G 1N4937G TAPPING 1 D814 DIODEZENER DUZ5R1B UZ 5 1B 1 D815 DIODE D1N4148 1N4148 TAPPING 1 D816 DIODEZENER DUZ2R7B UZ 2 7B 1 D818 DIODEZENER DUZ5R6BM UZ 5 6BM 1 D819 DIODE D1N4937G 1N4937G TAPPING 1...

Page 16: ...65TINCOATING 0 05 J215 WIRECOPPER 85801065GY AWG221 0 65TINCOATING 0 05 J216 WIRECOPPER 85801065GY AWG221 0 65TINCOATING 0 05 LOC PARTCODE PARTNAME DESCRIPTION QTY J217 WIRECOPPER 85801065GY AWG221 0...

Page 17: ...RCARBONFILM RD AZ330J 1 633OHMJ 1 R541 RCARBONFILM RD AZ101J 1 6100OHMJ 1 R542 RCARBONFILM RD AZ271J 1 6270OHMJ 1 R543 RCARBONFILM RD AZ101J 1 6100OHMJ 1 LOC PARTCODE PARTNAME DESCRIPTION QTY R544 RCA...

Page 18: ...61KOHMJ 1 RP02 RCARBONFILM RD AZ102J 1 61KOHMJ 1 RP03 RCARBONFILM RD AZ101J 1 6100OHMJ 1 RP04 RCARBONFILM RD AZ101J 1 6100OHMJ 1 RP05 RCARBONFILM RD AZ103J 1 610KOHMJ 1 RP06 RCARBONFILM RD AZ221J 1 6...

Page 19: ...7R0M290 ECPCD7R0M290 DDC7R0M290 ECPCD7R0M290 DDC7R0M290 ECPCD7R0M290 PTC posistor 14 14 OHM 20 21 21 F 7 OHM SCT01 SOCKET CRT 4859304130 ISHG93S 4859304130 ISHG93S CRT Socket for 21 21 F Mark II SCT02...

Page 20: ...5MM LP03 COIL PEAKING 5CPZ100K02 10UH K AXIAL 3 5MM LP04 COIL PEAKING 5CPZ100K02 10UH K AXIAL 3 5MM D812 DIODE DRGP15J RGP15J REMARK D EYE Depend on Cabinet LOC Part Name Part Code Part Description Pa...

Page 21: ...20 6 Schmetic Diagram All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 22: ...21 7 Printed Circuit Board All manuals and user guides at all guides com...

Page 23: ...PCB BUTTON CH SP 5090F03 SWRM SECC A34KQV42X NYLON 66 ABS GY SCREW CRT FIXING SCREW CRT FIXING WASHER RUBBER CRT AS 14 COVER BACK CLOTH BLACK 30X80 BK CR T2 0 1401S 1015 1P HIPS BK 30X140 YL FELT 100...

Page 24: ...3X10 MFZN 5 11 4855617500 4855936101 DECO EYE ABS BLUE 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN 4858310910 SPEAKER SP 5090F03 7172401612 SCREW TAPPTITE...

Page 25: ...E TT2 WAS 3X10 MFZN 5 11 4855617500 4855936101 DECO EYE ABS BLUE 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN 7178301011 SCREW TAPPTITE TT2 WAS 3X10 MFZN 4858311110 SPEAKER SP 58126F 7172401412 SCREW T...

Page 26: ...7 5 6 4 3 20 18 19 17 15 16 14 13 12 4855617500 MARK BRAND CU AU ABS BK 21D8 CM 907S CORE 4854803201 4855548000 DECO SENSOR PC SMOG 4856013610 SCREW SPKR FIX L 16 A 17 4858311110 SPEAKER 12W8OHM SP 58...

Page 27: ...is given in Fig 1 1 on page 7 The VCT 38xxA B family offers a rich feature set cov ering the whole range of state of the art 50 60 Hz TV applications In comparison to the VCT 38xxA the VCT 38xxB offe...

Page 28: ...A SCL RESQ XTAL2 XTAL1 GNDS VSUPS AOUT1 AOUT2 AIN1 AIN2 AIN3 XREF RRD GNDAB VSUPAB BOUT GOUT ROUT SVMOUT RSW2 RSW1 GNDM SENSE EW VERT VERTQ HFLB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 2...

Page 29: ...round Analog Front end 15 VSUPAF SUPPLY X Supply Voltage Analog Front end 16 CBIN IN VRT Analog Component Cb Input 17 CIN1 IN VRT Analog Chroma 1 Input 18 CIN2 CRIN IN VRT Analog Chroma 2 Input Analog...

Page 30: ...Back end 46 GNDAB SUPPLY X Ground Analog Back end 47 VRD IN X DAC Reference 48 XREF IN X Regerence Input for RGB DACs 49 AIN3 IN GNDS Analog Audio 3Input 50 AIN2 IN GNDS Analog Audio 2Input 51 AIN1 IN...

Page 31: ...he luma Video 1 AD converter The input signal must be AC coupled 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 24 HOUT Hor...

Page 32: ...eference Decoupling Fig 6 24 Via this pin the DAC reference voltage is decoupled by an external capacitor The DAC output currents depend on this voltage therefore a pull down transistor can be used to...

Page 33: ...1 Input pins CRIN CBIN VINx VERF N GNDAF VSUPAF P Fig 6 12 Output pin VOUT VREF VSUPAF SGND P VRT ADC Reference Fig 6 13 Supply pins VRT SGND VSUPS GNDS N Fig 6 6 Input Output pins RESQ SDA SCL P P P...

Page 34: ...ins VERT VERTQ VSUPAB GNDAB P P N VEWXR Fig 6 21 Output pin EW GNDAB N Fig 6 22 Output pins RSW1 RSW2 GNDD N Fig 6 16 Output pins HOUT GNDAB VSUPAB VREF Fig 6 17 Input pins SAFETY VPROT HGLB GNDAB VSU...

Page 35: ...N P VSUP ADB GND ADB Fig 6 29 Outpin pins ADB0 ADB18 OE1 OE2 WE1 WE2 VRD int ref voltage ref current VSUP AB GND AB XREF Fig 6 24 Supply pins XREF VRD 40 k 2 5V GND AB Fig 6 25 Input pins AIN1 3 2 5V...

Page 36: ...IN2 TDA8946J IN2 MODE SVR STANDBY MUTE LOGIC 3 16 IN1 IN1 8 6 1 4 17 14 2 15 MBK929 OUT1 OUT1 OUT2 OUT2 GND2 GND1 SHORT CIRCUIT AND TEMPERATURE PROTECTION VCC2 1 Block Diagram All manuals and user gu...

Page 37: ...pply voltage channel 1 OUT1 4 positive loudspeaker terminal 1 n c 5 not connected IN1 6 positive input 1 n c 7 not connected IN1 8 negative input 1 IN2 9 negative input 2 MODE 10 mode selection input...

Page 38: ...TY INDEPENDENTMUTEFUNCTION ALLFUNCTIONSPROGRAMMABLEVIASE RIALBUS 2MONITOROUTPUT ONLYFORTDA7442 SDIP32 L IN2 L IN3 L IN4 MUXOUT L IN L N C MUXOUT R IN R BIN R 1 3 2 4 5 6 7 8 9 PS1 TREBLE L N C DIGGND...

Page 39: ...RPS1 SYMULATED MUSIC MUSIC SYMULATED OFF MIXING AMP LPF 9KHz EFFECT CONTROL MIXING AMP 1 2nF LP TREBLE R 5 6nF TREBLE L 100nF 5 6K 100nF BOUT L 100nF 100nF 5 6K BIN R BOUT R 79dB CONTROL 79dB CONTROL...

Page 40: ...5AU309 20 A GND PIN TREBLE L TREBLE R 50K GND VS VREF D94AU200 20 A PIN L IN R IN L IN2 R IN2 L IN3 R IN3 L IN4 R IN4 20K VS D95AU336 20 A 20K GND 42K PIN CREF D94AU205 20 A GND PIN SCL SDA VS D95AU30...

Page 41: ...OUT R OUT 45K VS D98AU949 20 A BASS RO BASS LO GND Bass PIN BASS LI BASS RI 45K VS D98AU950 20 A BASS LI BASS RI GND PIN BASS LO BASS RO IC DESCRIPTION TDA7442D All manuals and user guides at all guid...

Page 42: ...HOVER PROTECTION POWER DISSIPATION 3 5W ESD PROTECTED Tab connected to Pin8 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BLUE FEEDBACK BLUE CATHODE CURRENT BLUE OUTPUT GREEN FEEDBACK GREEN CATHODE CURRENT GREE...

Page 43: ...d Pin 6 must be grounded 7 Red Output Output driving the red cathode Pin 7 is internally protected ahainst CRT arc discharges by a diode limiting the output voltage to VDD 8 Ground Also connected to t...

Page 44: ...49 IC DESCRIPTION APPENDIX 6 STR W6753 All manuals and user guides at all guides com...

Page 45: ...50 IC DESCRIPTION APPENDIX All manuals and user guides at all guides com...

Page 46: ...51 IC DESCRIPTION APPENDIX All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 47: ...52 IC DESCRIPTION APPENDIX All manuals and user guides at all guides com...

Page 48: ...53 IC DESCRIPTION APPENDIX All manuals and user guides at all guides com...

Page 49: ...54 IC DESCRIPTION APPENDIX All manuals and user guides at all guides com...

Page 50: ...6656 NORMAL CHECK REPLACE ABNORMAL D802 D805 R803 CHECK REPLACE CHECK VCC I802 LTV 817C AT PIN 25 3 3V OF I501 NORMAL CHECK VOLTAGE AT PIN 3 OF I701 CHECK SIGNAL AT ST BY H PIN 59 60 OF I501 POWER ON...

Page 51: ...F CHANGE SIGNAL CVBS OF TUNER CHECK SIGNAL AT PIN 35 33 OF I501 CHECK SIGNAL AT PIN 42 43 44 OF I501 CHECK VOLTAGE AT PIN 45 OF I501 CHECK REPLACE Q502 Q503 Q504 Q505 CHECK SIGNAL AT CATHODE OF CRT CH...

Page 52: ...NAL AT ABNORMAL 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 BL...

Page 53: ...F 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 HEATER VOLTAGE R G B INPUT AND...

Page 54: ...1 CHECK REPLACE I301 CHECK REPLACE I701 CHECK REPLACE D410 D301 27V LINE 13V LINE CHECK 35TH PIN OF I501 CHECK VERTICAL INPUT Vin OF I301 CHECK VERTICAL OUTPUT Vout OF I301 CHECK OUTPUT OF I301 CHECK...

Page 55: ...PIN 1 2 14 17 OF I601 CHECK SIGNAL AT PIN 6 12 OF I601 CHECK SIGNAL AT PIN 29 30 OF I602 CHECK SIGNAL AT PIN 2 5 OF I602 CHECK SIGNAL AT PIN 27 OF I501 CHECK SIGNAL AT PIN 24 25 OF I602 CHECK REPLACE...

Page 56: ...OK CHECK CONNECTION of AV1 AV2 DVD1 DVD2 CHECK REPLACE Q583 Q584 Q585 Q586 CHECK SIGNAL AT PIN 20 21 22 16 17 18 OF I501 CHECK SIGNAL AT PIN R G B 42 43 44 OF I501 ABNORMAL NORMAL All manuals and user...

Page 57: ...L BATTERY AND LED OF REMOCON NORMAL CHECK IR OF PREAMP AND VCC OF PREAMP IC IF01 NORMAL CHECK REPLACE 8TH PIN OF I501 ABNORMAL REPLACE PREAMP IC IF01 REPLACE BATTERY 8 REMOTE CONTROL UNIT TROUBLE All...

Page 58: ...All manuals and user guides at all guides com...

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