Daewoo DTC-1420 Service Manual Download Page 52 | Manualshive

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Daewoo DTC-1420 Service Manual Download Page 52

-51-

TROUBLE SHOOTING CHARTS

CHECK

ABNORMAL

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

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Summary of Contents for DTC-1420

Page 1: ...MP MT MZ DTC 1420 2120 ME MP MT MZ DTC 21U8 2131 2132 ME MP MT MZ MODEL ME MP MT MZ TEXT O X O X PIP O O X X MODEL OPTION LIST Caution In this Manual some parts can be changed for improving their per...

Page 2: ...LIST 13 7 EACH MODEL PARTS LIST 20 8 SCHEMATIC DIAGRAM 21 9 PRINTED CIRCUIT BOARD 22 10 MECHANICAL EXPLODED VIEW AND PARTS LIST 23 11 IC DESCRIPTION 27 12 TROUBLE SHOOTING CHARTS 44 T TABLE OF CONTENT...

Page 3: ...14 80W 20 90W 21 95W 21 Flat 95W 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 25MH...

Page 4: ...en working on high voltage 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...

Page 5: ...4 3 CIRCUIT BLOCK DIAGRAM...

Page 6: ...CENTER 3700 V SIZE 95 S6 Geometry H CENTER 70 V LINEAR 16 S CORRECT 11 S7 PIP P H POS 45 P V POS 30 P R G B Peak 150 150 150 P CONT 04 P BRIGHT 01 S8 WHITE R G B DRIVE 170 170 170 BALANCE R G B BIAS...

Page 7: ...LATIN English French Swedish Czech German Spanish Italian Estonian EAST English Slovakian Hungarian Serbian Albanian Polish Turkian Rumanian RUSSIA English Russian Bulgaian Ukrainian Serbian Monteneg...

Page 8: ...mination High 70Cd LOW BEAM about 15Cd 5 2 3 Press the S8 key of SVC remocon to adjustment of Whit Balance X 0 288 Y 0 301 5 2 4 Memorize in Nitsuki after Adjustment of White Balance 5 3 Adjustment of...

Page 9: ...th Vol Up Down keys so that RETMA pattern may be 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...

Page 10: ...ecause BRIGHT is set to rise 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 disp...

Page 11: ...llows Ch91 Sharpness 0 Skip red Move green Menu 2 Choice SERVICE MENU Pr Up Down 3 Enter SERVICE SUB MENU Vol Up Down S1 S2 S3 S4 S5 S6 S7 S8 S9 S11 RECALL S10 S12 MUTE POWER TV CATV ADD ERASE TV VIDE...

Page 12: ...28CH U 527 25 BG PAL 30 PAL 40CH W B U 623 25 AUTO W B 31 PAL 2CH RETMA VL 48 25 BG AUTO FOCUS V CENTER V SIZE V SLOPE H CENTER SCREEN 32 PAL 47CH C HATCH U 679 25 I AUTO CONVERGENCE ADJUSTMENT 33 PA...

Page 13: ...T USE H BOW 517 517 517 517 NOT USE H PARA 20 20 20 20 NOT USE EW TRAP 121 121 121 121 NOT USE S7 PIP P H POS 45 P V POS 30 P R G B Peak 130 P CONT 4 P BRIGHT 5 S8 WHITE R G B DRIVE 170 170 170 170 17...

Page 14: ...REMARK I601 PTA2SW8228 HEATSINKASS Y 1TDA8946J 7174301211 00001 1TDA8946J ICAUDIOAMP TDA8946J 0000A 4857028228 HEATSINK ALEXBK 0000B 7174301211 SCREWTAPPTITE TT2RND3X12MFZN I602 1TDA7442 IC AUDIO PROC...

Page 15: ...E DESCRIPTION REMARK R410 RS01Z229J RM OXIDEFILM 1W2 2OHMJ TAPPING R413 RS01Z100J RM OXIDEFILM 1W10OHMJ TAPPING R414 RS01Z472J RM OXIDEFILM 1W4 7KOHMJ TAPPING R418 RS01Z249J RM OXIDEFILM 1W2 4OHMJ TAP...

Page 16: ...6Y TP Q511 TKTC3198Y TR KTC3198Y Q581 TKTC3198Y TR KTC3198Y Q582 TKTC3198Y TR KTC3198Y Q583 TKTC3198Y TR KTC3198Y LOC PARTCODE PARTNAME DESCRIPTION REMARK Q584 TKTC3198Y TR KTC3198Y Q585 TKTC3197 TR K...

Page 17: ...AWG221 0 65TINCOATING J014 85801065GY WIRECOPPER AWG221 0 65TINCOATING J015 85801065GY WIRECOPPER AWG221 0 65TINCOATING J016 85801065GY WIRECOPPER AWG221 0 65TINCOATING J017 85801065GY WIRECOPPER AWG...

Page 18: ...NCOATING J124 85801065GY WIRECOPPER AWG221 0 65TINCOATING J125 85801065GY WIRECOPPER AWG221 0 65TINCOATING J126 85801065GY WIRECOPPER AWG221 0 65TINCOATING J127 85801065GY WIRECOPPER AWG221 0 65TINCOA...

Page 19: ...1 647KOHMJ R601 RD AZ103J RCARBONFILM 1 610KOHMJ R603 RD AZ101J RCARBONFILM 1 6100OHMJ LOC PARTCODE PARTNAME DESCRIPTION REMARK R604 RD AZ101J RCARBONFILM 1 6100OHMJ R605 RD AZ222J RCARBONFILM 1 62 2K...

Page 20: ...CP15 CCZF1H103Z CCERA 50VF0 01MFZ CP17 CCZF1H103Z CCERA 50VF0 01MFZ LOC PARTCODE PARTNAME DESCRIPTION REMARK CP19 CCZF1H103Z CCERA 50VF0 01MFZ CP24 CCZB1H820K CCERA 50VB82PFK AXIAL DP02 85801065GY WI...

Page 21: ...4 OHM J TAPPING R612 R Carbon Film 1 6 4 3K OHM J 1 6 4 3K OHM J 1 6 5 6K OHM J 1 6 5 6K OHM J R613 R Carbon Film 1 6 4 3K OHM J 1 6 4 3K OHM J 1 6 5 6K OHM J 1 6 5 6K OHM J R801 Posistor ECPCC14OM290...

Page 22: ...21 8 Schmetic Diagram...

Page 23: ...22 9 Printed Circuit Board...

Page 24: ...W TAPPTITE SPEAKER RETA 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 HIP...

Page 25: ...SCREW TAPPTITE 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 4858310910 SPEAKER SP 5090F03 717...

Page 26: ...178301011 SCREW TAPPTITE 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 58...

Page 27: ...T2 0 HIPS GY 30X190 BK 21 11 10 9 8 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...

Page 28: ...hip TV processor family 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 3...

Page 29: ...FETY P20 P21 P22 P23 SDA 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...

Page 30: ...put 14 GNDAF SUPPLY X Ground 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 Analo...

Page 31: ...Supply Voltage Analog 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...

Page 32: ...HS luma signal is converted using the 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...

Page 33: ...s line Pin 47 VRD DAC Reference 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 tr...

Page 34: ...AF GNDAF To ADC Fig 6 11 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 p...

Page 35: ...Flyback Fig 6 20 Output pins 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 put pins HOUT GNDAB VSUPAB VREF Fig 6 17 Input pins SAFET...

Page 36: ...put pins VB0 VB7 VBCLK 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...

Page 37: ...IPTION TDA8946J VCC1 VCC 10 11 12 9 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 Bl...

Page 38: ...und channel 1 Vcc1 3 supply 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 1...

Page 39: ...dBSTEPSFORBALANCEFACILITY 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 P...

Page 40: ...50K PS1 90Hz 100nF PS1 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 79...

Page 41: ...PIN VOUT REF 25K VS D95AU309 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...

Page 42: ...41 VS D95AU230 20 A GND PIN L 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...

Page 43: ...R DRIVE ADJUSTMENT FLASHOVER 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 GRE...

Page 44: ...this control is not used 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 Gro...

Page 45: ...T PIN 24 OF I501 STR F6656 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 5...

Page 46: ...L NORMAL CHANGE INPUT MODE RF AV RF 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...

Page 47: ...S 3 NO COLOR CHECK SIGNAL 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...

Page 48: ...NAL 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...

Page 49: ...K INPUT VOLTAGE OF I301 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...

Page 50: ...NORMAL CHECK SIGNAL AT 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...

Page 51: ...OOTING CHARTS 7 NO EXTERNAL AV RF 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 AB...

Page 52: ...NG CHARTS CHECK ABNORMAL 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 CO...

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