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Daewoo DTQ-26S3FC, Руководство по обслуживанию, Страница: 41 / 45

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16

TROUBLESHOOTING GUIDE

3. 2 NO SOUND(DTQ-26S3FCM)

Check audio output signal of I101 #1

NG : Go to the figure  g

OK : Go to the figure  h

U102

TUNER

I701

MICOM

X701

32.768KHz

#10

#11 #12

ST-BY

5V

#29 #30

Check

the crystal

T-DATA T-CLOCK

5V

33V

IF OUT

#14

AFT

I101

SF101

SAW FILTER

#5

#6

#10

#8

#11

#12

Check

IF Vcc (5V)

Check

clock/data signal

#3

Check

IF AGC voltage

g 

I602

TDA7267A

#1

#4

#1

Check

Audio out

#9

5V

Check

FM filter circuit

Check

Vcc of the sound AMP

C602

SOUND

14V

C606

Audio in

Check

audio signal in

#2

C608

speaker

Check

audio signal out

#3

Q601

Micom #40
Audio MUTE
H:Mute  L:Normal

C607

Check

L:Mute / H:Normal

SDA

SCL

FROM I701

h

Appendix

Содержание DTQ-26S3FC

Страница 1: ...NTSC M AC 120V 60Hz 97W 95W 90W Frequency Synthesizer FS Tuning System VHF 2 13 12 UHF 14 69 65 CATV 1 125 125 1 8W 1 8W 1 8W 1 8W 1 8W 3W 8ohm 75ohm Unbalanced Front Video Audio Rear Video Audio Pic...

Страница 2: ...INSTRUCTIONS 6 1 SERVICE MODE ADJUSTMENTS 6 2 ASSEMBLY ADJUSTMENTS 7 SCHEMATIC DIAGRAM 11 EXPLODED VIEW 12 PRINTED CIRCUIT BOARD 15 SERVICE PARTS LIST 16 1 DIFFERENT PARTS LIST 23 IC DESCRIPTION 1 TR...

Страница 3: ...ck hazard and must be corrected imme diately GRAPHIC SYMBOLS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of unin...

Страница 4: ...4 Wall and shelf mounted installations using a commercial mounting kit must follow the factory approved mounting instructions A receiver mounted to a shelf or platform must retain its original feet o...

Страница 5: ...9 56 CATV 1 125 125 SOUND OUTPUT 1 8W31 8W 1 8 W 1 8 W 1 8W SPEAKER 3 W 8 ohm ANTENNA INPUT IMPEDANCE 75 ohm Unbalanced AUXILIARY INPUT TERMINAL Front Video Audio Rear Video Audio INTERMEDIATE FREQUEN...

Страница 6: ...S W IC TA7347P SOUND IC MSP3435G SCL S DA FBT Scr een Fouse H V HEATER FBT POWER IC STR F6626 EEPROM IR SW1 SW5 SAW FILTER VIDEO AMP TDA6103Q 10V 27V SOUND AMP TDA7267 A IF DET OUT TRAP BPF 5V 9V 5V...

Страница 7: ...into the red Press the volume up or down button to enter in the service mode you wish to adjust 2 How to memorize the adjusted values in the service mode Must press DISPLAY button the state which the...

Страница 8: ...SI 0 63 Align vertical DC bias using internal cross pattern S7 Vertical Size V SIZE 0 127 Align vertical amplitude using internal cross pattern S7 NO SD POWER OFF YES Automatically turn off in 15min f...

Страница 9: ...lume up or down button the screen is changing like this Using the volume up or down button select internal cross pattern Select service adjustment S6 You can see the OSD as shown in below 4 1 Horizont...

Страница 10: ...ume down adjust service adjustment data of RD GD BD and RB GB BB until a good gray scale with normal whites is obtained ALIGNMENT INSTRUCTIONS Press the DISPLAY button to memorize the data 6 DIGITAL P...

Страница 11: ...lue to obtain normal brightness level Press the DISPLAY button to memorize the data CONTRAST Fixed value 27 TINT Fixed value 27 COLOR Fixed value 15 7 FACTORY OUTGOING MODE S12 FACT If you select the...

Страница 12: ...11 SCHEMATIC DIAGRAM...

Страница 13: ...12 EXPLODED VIEW 1 DTQ 29S3FC...

Страница 14: ...13 EXPLODED VIEW 2 DTQ 26S3FC...

Страница 15: ...14 EXPLODED VIEW 3 DTQ 26S3FCM...

Страница 16: ...PRINTED CIRCUIT BOARD 15...

Страница 17: ...O 25V RSS 3300MF 16X31 5 C814 CEYN2D221T C ELECTRO 200V FWS 220MF 22X30 C825 CCXB3A471K C CERA 1KV B 470PF K T C826 CEYF1E332V C ELECTRO 25V RSS 3300MF 16X31 5 D801 DD5SBA60 DIODE BRIDGE D5SBA60 2 D80...

Страница 18: ...CERA 50V Y5V 0 1MF Z 2012 LOC PART CODE PART NAME DESCRIPTION REMARK CC612 HCBK472KCA C CHIP CERA 50V X7R 4700PF K 2012 CC613 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 CC614 HCBK102KCA C CHIP CERA...

Страница 19: ...RC707 HRFT101JCA R CHIP 1 10 100 OHM J 2012 LOC PART CODE PART NAME DESCRIPTION REMARK RC708 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 RC712 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 RC713 HRFT102JCA R CHI...

Страница 20: ...AR 50V EU 0 01MF J TP C302 CEXF1H479V C ELECTRO 50V RSS 4 7MF 5X11 TP LOC PART CODE PART NAME DESCRIPTION REMARK C303 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP C304 CMXB1H224J C MYLAR 50V EU 0 22MF J...

Страница 21: ...SMALL R604 RN01B750JS R METAL FILM 1W 75 OHM J SMALL R605 RN01B121JS R METAL FILM 1W 120 OHM J SMALL R802 RN02B273JS R METAL FILM 2W 27K OHM J SMALL R809 RN01B121JS R METAL FILM 1W 120 OHM J SMALL LOC...

Страница 22: ...WG22 1 0 65 TIN COATING LOC PART CODE PART NAME DESCRIPTION REMARK J065 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J066 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J067 85801065GY WIRE COPPER...

Страница 23: ...15K OHM J R409 RD 4Z103J R CARBON FILM 1 4 10K OHM J I R410 RD 4Z163J R CARBON FILM 1 4 16K OHM J I LOC PART CODE PART NAME DESCRIPTION REMARK R411 RD 4Z202J R CARBON FILM 1 4 2K OHM J R414 RD AZ103J...

Страница 24: ...0V RSS 3 3MF 5X11 TP 1 0 0 C622 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP 1 0 0 C623 CEXF1H470V C ELECTRO 50V RSS 47MF 6 3X11 TP 1 0 0 C624 CEXF1H470V C ELECTRO 50V RSS 47MF 6 3X11 TP 1 0 0 C626 CEXF1...

Страница 25: ...R601 RD AZ102J R CARBON FILM 1 6 1K OHM J 1 0 0 R602 RD AZ102J R CARBON FILM 1 6 1K OHM J 1 0 0 R603 RD AZ102J R CARBON FILM 1 6 1K OHM J 1 0 0 R604 RN01B750JS R METAL FILM 1W 75 OHM J SMALL 1 0 0 R60...

Страница 26: ...5 P86 AN6 P87 AN7 RES FILT CVIN VS HS R G B BL I P60 SDA0 P61 SCLK0 P62 SDA1 P63 SCLK1 P70 INT0 P71 INT1 P72 INT2 TOIN P73 INT3 TOIN P00 P01 P02 P03 P04 P05 P06 P07 TV ONLY H CAPTION ST MONO BLUE BACK...

Страница 27: ...ters used 16K bytes Various characters attributes Character colors 16 colors Character background colors 16 colors Fringe shadow colors 16 colors Full screen colors 16 colors Rounding Underline Italic...

Страница 28: ...ace FS 181 Channel AIR 2 69CH CABLE 1 125CH AFT Operation Fine Tuning 2 5Fn 2 5MHz AIR CABLE STD HRC IRC Only Cable 5 6CH is that AFT range is cover over broad band 2 5MHzFn 3 5MHz Memorize Channels I...

Страница 29: ...ception Control Auto Tint Power Restore Input TV Line Controlled function Option Reception Air Cable Factory Initial Condition Option Blue Background Option 3 Language North America ENG SPA FRA South...

Страница 30: ...5 IC DESCRIPTION 5 Pin Description Appendix...

Страница 31: ...6 IC DESCRIPTION Appendix...

Страница 32: ...7 IC DESCRIPTION Appendix...

Страница 33: ...RED OUTPUT GREEN OUTPUT BLUE OUTPUT B AKB INPUT VERTICAL OUTPUT RAMP ALC FILTER HOR BUS VCC HOR AFC FILTER HORIZONTAL OUTPUT AUDIO OUT FM OUTPUT PIF AGC RF AGC OUT PIF INPUT1 PIF INPUT2 IF GND IF VCC...

Страница 34: ...35 34 33 32 22 23 24 25 26 31 30 29 28 27 DVSS RESETQ VREF_2 MAIN_L_OUT DACM_SUB DVSS STANDBY 12C_CL 12C_DA SC3_IN_L SC2_IN_L SC2_OUT_R SC2_OUT_L VREF1 SC1_OUT_R SC1_OUT_L CAPL_A CAPL_M AHVSS AGNDC A...

Страница 35: ...K 10 12S_WS IN OUT LV I2S WORD STROBE 11 12S_DA_OUT OUT LV I2 S1 DATA OUTPUT 12 12S_DA_IN1 IN LV I2 S1 DATA INPUT 13 ADR_DA OUT LV ADR data output 14 ADR_WS OUT LV ADR word strobe 15 ADR_CL OUT LV ADR...

Страница 36: ...T1 input right 43 VREFTOP OBL Reference voltage IF A D converter 44 MONO_IN IN LV Mono input 45 AVSS OBL Analog ground 46 AVSUP OBL Analog power supply 5V 47 ANA_IN IN LV IF input 48 ANA_IN IN AVSS VI...

Страница 37: ...I801 POWER CONTROL MODULE PIN NO DESCRIPTION PIN NO DESCRIPTION 1 ST BY VCC 10 POWER ON 2 DELAY 11 ON OFF 3 VCC 12 ON OFF PULSE 4 FB 13 GND2 5 GND1 14 133V INPUT 9 8V DPM 011 TIA KSE 1 2 3 4 5 10 11 1...

Страница 38: ...Check F801 125V 5A Check D801 D5SBA60 Check R801 10W 1 Check Voltage Check Voltage Check Voltage Check Voltage 133V 14 FROM U COM 42 PW ON 0FF 10 Check Voltage FROM MICOM 42 PW ON H PW OFF L 5 VIN OC...

Страница 39: ...27 28 SDA SCL I101 SF101 SAW FILTER 5 6 10 8 11 12 Check IF Vcc 5V Check clock data signal Check clock data signal 3 4 Check IF AGC voltage Check RF AGC voltage 46 44 Z501 4 5M Trap Check the wavefor...

Страница 40: ...und signal out The reset The SDA SCL I603 MSP3435G SDA SCL FROM I701 51 52 47 24 25 20 7 8 e I602 TDA7267A 1 4 Check Vcc of the sound AMP C602 SOUND 12V C606 L sound in Check audio signal in 2 C608 sp...

Страница 41: ...TA T CLOCK 5V 33V IF OUT 14 AFT I101 SF101 SAW FILTER 5 6 10 8 11 12 Check IF Vcc 5V Check clock data signal 3 Check IF AGC voltage g I602 TDA7267A 1 4 1 Check Audio out 9 5V Check FM filter circuit C...

Страница 42: ...ICOM 11 12 29 30 T DATA T CLOCK 5V 33V IF OUT 14 AFT SDA SCL I AGC IN X701 32 768KHz 10 ST BY 5V Check the crystal I703 EEPROM 8 ST BY 5V 5 6 SDA SCL Check SDA SCL Check 5V 33V LINE 15 C103 Check RF A...

Страница 43: ...21 RGB Vcc 8 2V Check the voltage R OUT G OUT B OUT Check R G B signal 43 Video Chroma Deflection Vcc Check the voltage X502 24 C507 C508 V RAMP ALC filter 5V Check the voltage 2 5V I301 LA7845 23 Ver...

Страница 44: ...Control PREAMP ST BY 5V GND 34 OUT Check the waveform I701 MICOM X701 32 768KHz 10 11 12 ST BY 5V Check the crystal 24 25 SDA SCL I101 16 17 Check clock data signal 20 21 V SYNC IN H SYNC IN Check the...

Страница 45: ...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 leesk web dwe co kr TEL 82 2 360 7802 FAX 82 2 360 7877...

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