Daewoo DTH-25G1FST/FSP/FS Service Manual Download | Manualshive

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TROUBLE SHOOTING CHARTS

3. NO PICTURE

Step

Check Point

Condition

Rem ark

Yes

N o

1

W aveform is fig.2

next step

Check/replace TU 01

2

C heck 33V

next step

Check/replace R107, D103, R416, R102

3

C heck 5V

next step

Check/replace R101, D101

4

C heck 9V

next step

Check/replace L102, L105

5

C heck signal pulse

next step

Check/replace RC 104, I701, TU 01

6

C heck signal pulse

next step

Check/replace RC 103, I701, TU 01

7

C heck AG C voltage

Check/replace I501

0~7.0 V dc

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Summary of Contents for DTH-25G1FST/FSP/FS

Page 1: ......

Page 2: ...UCTIONS 7 1 STEREO ADJUSTMENT 8 2 FOCUS ADJUSTMENT 8 3 GEOMETRY 8 4 WHITE BALANCE ADJUSTMENT 10 5 SUB BRIGHT ADJUSTMENT 11 6 PIP DATA ADJUSTMENT 11 IC DESCRIPTION 16 TROUBLE SHOOTING CHARTS 24 1 NO PO...

Page 3: ...URE TUBE HO W EVER THIS TUBE DO ES NOT EM IT X RAYS W HEN THE HIG H VO LT AGE IS AT THE FACTORY SPECIFIED LEVEL THE PROPER VALUE IS G IVEN IN THE APPLICABLE SCHEM ATIC O PERATION AT HIG HER VO LT AGES...

Page 4: ...hock 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 un...

Page 5: ...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...

Page 6: ...SPEAKER 7W 8Ohm 2EA ANTENNA IMPEDANCE 75 ohm unbalanced TUNING SYSTEM Frequency Synthesize Tuning System MEMORY CHANNEL 181 Channels RECEPTION CHANNEL UNIT VHF TV LOW CH2 CH6 HIGH CH7 CH13 CH1 CH14 CH...

Page 7: ...BLOCK DIAGRAM...

Page 8: ...he COLOR BAR signal INPUT LEVEL 60 dBuV 2 Select the S10 of service mode to display items then press the VOL buttons on the remote control 3 Press CH buttons on the remote control to select VCO or AGC...

Page 9: ...s CH buttons on the remote control to select WIDEBAND and press VOL Buttons on the remote control 6 Adjust with VOL buttons till the Rout scope become minimum 7 Press CH buttons on the remote control...

Page 10: ...the upper and Lower sides of screen 5 Press the RECALL button on the remote control to store 7 3 VERTICAL LINEARITY ADJUSTMENT 1 Receive the RETMA PATTERN signal 2 Set the user control AUTO PICTURE t...

Page 11: ...ect the S11 of service mode to display items then press the VOL buttons on the remote control 4 Press CH buttons on the remote control to select SG PATTERN 8 and press VOL buttons on the remote contro...

Page 12: ...ontrol to select BRIGHTNESS and press VOL buttons on the remote control to adjust Sub bright level in order that the gradation pattern may serve 18 of BRIGHTNESS 5 Press the RECALL button on the remot...

Page 13: ...LL button of SVC remote control to store 4 STEREO ADJUSTMENT 1 Receive the Zenith MTS signal of 1KHz CH Lonly 2 Connect scope at TP2 to verify Rout correspondent 3 Press S10 button on the SVC remote c...

Page 14: ...the RECALL button on the SVC remote control to store 7 3 VERTICAL LINEARITY ADJUSTMENT 1 Receive the RETMA PATTERN signal 2 Set the user control AUTO PICTURE to STANDARD mode 3 Press S6 button on the...

Page 15: ...ng instrument 4 At this time the memorized coordinates of the white balance tester unless otherwise specified use above coordinates and color temperature 9600 K 265X295 5 Press the RECALL button on th...

Page 16: ...SIDEL VERTICAL SYNC DELAY adjust INSET SIGNAL 0 32 VSPDEL VERTICAL SYNC DELAY adjust PARENT SIGNAL 0 32 8 S8 KEY WHITE BALANCE adjust mode G DRIVE 0 127 B DRIVE 0 127 R BIAS 0 255 G BIAS 0 255 B BIAS...

Page 17: ...atically turns to High when the ON TIMER is set and the clock TV indicates ON TIME Automatically turns to Low when Auto Power OFF 7 KEY OUT KEY OUTPUT 8 KEY OUT KEY OUTPUT 9 KEY OUT KEY OUTPUT 10 ID T...

Page 18: ...nd 40 P35 SDA0 P32 INT4 Ground 41 S MUTE Sound mute 42 VDD 5V PIN NAME FUNCTION REMARK 1 De Emphasis The terminal to be connected with capacitor for deemphasis 2 Audio Output N C 3 IF VCC 9V The termi...

Page 19: ...l for composite sync Output open collector output 32 H Output The terminal for output of horizontal drive signal 33 DEF GND The terminal for GND of deflection circuit 34 SCP Output N C 35 Video output...

Page 20: ...2 FEATURES Video switch with 2 CVBS inputs One input can be switched between CVBS and Y C and the circuit can automatically detect whether the incoming signal is CVBS or Y C Intergrated chrominance t...

Page 21: ...ter B1 12 N C GND3 38 Ground 3 0V BLANK1 13 N C HOUT 39 Horizontal sync output pulse CLAMP 14 Clamping pulse input SAND 40 N C DECFT 15 Decoupling filter tuning VP2 41 Supply voltage 2 8V CHROMAI 16 N...

Page 22: ...nal output pin STIN 18 Input the L R signal from SUBOUT pin 17 NOISETC 19 Set the time constant for the noise detection circuit connect a 47 F Capacitor Between this pin and GND SAPOUT 20 SAP FM detec...

Page 23: ...internal bias reference VIDEO 1 IN VIDEO 2 IN PIP IN TV IN 2 4 6 28 Video 1 2 and PIP TV input pins Vcc 3 Power supply pin GND AUDIO GND DIGITAL GND VIDEO 5 24 27 Audio digital and video GND pins AUDI...

Page 24: ...nd thermal protected Mute possibility 2 PIN DESCRIPTION SYMBOL PIN DESCRIPTION VI1 1 Inverting input 1 VI2 2 Inverting input 2 VI3 3 Inverting input 3 GND 4 Ground VIP 5 non inverting input VDD 6 Supp...

Page 25: ...TROUBLE SHOOTING CHARTS 1 NO POWER...

Page 26: ...ck tuner 8 Check voltage 17 I701 next step Check replace R403 R404 R405 0 6V under 9 Check voltage 132Vdc next step Check replace Q401 R401 10 Check voltage 28 36 I501 next step Check replace R206 D20...

Page 27: ...heck replace RC104 I701 TU01 RC103 3 Check 6 of IA01 next step Check replace QC102 QC103 4 Check 20 of IP02 next step Check replace RCA38 RA27 CP10 IA01 5 Check 8V 5V PP02 next step Check replace RP04...

Page 28: ...TU01 2 Check 33V next step Check replace R107 D103 R416 R102 3 Check 5V next step Check replace R101 D101 4 Check 9V next step Check replace L102 L105 5 Check signal pulse next step Check replace RC1...

Page 29: ...step Check replace QC602 4 Check RI LI of PM01 next step Check replace I601 5 Check RO LO of PM01 next step Check replace I601 IA01 6 Check SCL SDA of PM01 next step Check replace I601 I603 7 Check R...

Page 30: ...18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 V DC 8 8 3 0 3 0 3 0 5 8 4 2 5 0 1 1 8 4 3 4 3 9 0 3 5 1 4 4 3 1 5 PIN NO 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 V DC 0 1 4 2 8 4 8 2 6 2 6 2 9 6...

Page 31: ...0 31 32 33 34 35 36 V DC 7 1 3 6 1 8 0 2 5 5 9 0 0 6 5 0 PIN NO 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 V DC 0 0 0 4 0 2 8 2 1 3 1 3 5 1 2 9 0 0 PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V...

Page 32: ...6 4 3 4 3 4 2 4 3 4 3 4 3 4 3 8 6 4 2 PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 V DC 3 1 3 0 3 0 0 3 2 3 1 0 3 2 8 7 0 0 0 0 PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 V DC 4 5 4 4 8 8 4 4 0 4 4 4 5 4 5 4 5 4...

Page 33: ...VENT IM 1000 50 2291140501 WAX COVER 90 2291051001 FLUX KILLER KFT 7 C307 CEYF1E332V C ELECTRO 25V RSS 3300MF 16X31 5 C408 CMYH3C822J C MYLAR 1 6KV BUP 8200PF J C409 CMYH3C822J C MYLAR 1 6KV BUP 8200P...

Page 34: ...FR RUBBER SPONGE LOC PART CODE PART NAME DESCRIPTION MD01 4850M01810 MODULE RF PH RF 9504 P102A 4850704S05 CONNECTOR YH025 04 YST025 ULW 600 P401A 4850703S20 CONNECTOR YH025 03 YST025 ULW 400 P402 485...

Page 35: ...01MF K 2012 CC706 HCQK200JCA C CHIP CERA 50V CH 20PF J 2012 CC707 HCQK200JCA C CHIP CERA 50V CH 20PF J 2012 CC710 HCBK103KCA C CHIP CERA 50V X7R 0 01MF K 2012 CC713 HCQK101JCA C CHIP CERA 50V CH 100P...

Page 36: ...TION QC602 T2SC2412KB TR CHIP 2SC2412K T146 BR QC603 T2SA812T2B TR CHIP 2SA812 T2B QC703 T2SC2412KB TR CHIP 2SC2412K T146 BR QC704 T2SC2412KB TR CHIP 2SC2412K T146 BR QC705 T2SC2412KB TR CHIP 2SC2412K...

Page 37: ...2012 RC738 HRFT103JCA R CHIP 1 10 10K OHM J 2012 LOC PART CODE PART NAME DESCRIPTION RC739 HRFT103JCA R CHIP 1 10 10K OHM J 2012 RC740 HRFT332JCA R CHIP 1 10 3 3K OHM J 2012 RC741 HRFT103JCA R CHIP 1...

Page 38: ...W 0 39 OHM J TAPPING R410 RS02Z182JS R M OXIDE FILM 2W 1 8K OHM J SMALL LOC PART CODE PART NAME DESCRIPTION R411 RS02Z182JS R M OXIDE FILM 2W 1 8K OHM J SMALL R412 RS02Z182JS R M OXIDE FILM 2W 1 8K OH...

Page 39: ...RO 50V RSS 10MF 5X11 TP CA17 CEXF1H100V C ELECTRO 50V RSS 10MF 5X11 TP CA18 CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP LOC PART CODE PART NAME DESCRIPTION CA19 CEXF1E470V C ELECTRO 25V RSS 47MF 5X11...

Page 40: ...36GP TAPPING D813 DRGP15J DIODE RGP15J D820 D1N4148 DIODE 1N4148 TAPPING D901 D1S1888 DIODE 1S1888 TAPPING DA01 DMTZ5R1B DIODE ZENER MTZ 5 1 B TAPPING DA02 DMTZ5R1B DIODE ZENER MTZ 5 1 B TAPPING DP01...

Page 41: ...IN COATING J116 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J117 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J118 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J119 85801065GY WIRE COPPER AW...

Page 42: ...OC PART CODE PART NAME DESCRIPTION ZZ300 PTPMMSJ638 PCB PIP MANUAL AS DTH 29G1FST 10 2193102005 SOLDER BAR SN PB 63 47 S63S 1320 20 2193011101 SOLDER WIRE RS 60 1 2 1 6A 30 2291050615 FLUX SOLDER DF 2...

Page 43: ...MF 5X11 TP LOC PART CODE PART NAME DESCRIPTION CP37 CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP CP48 CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP XP01 5XEX3R582C CRYSTAL QUARTZ HC 49U 3 582056M 20PPM TA XP...

Page 44: ...EXD1E479F C ELECTRO 25V RND 4 7MF 5X11 TP C613 CEXF1H479V C ELECTRO 50V RSS 4 7MF 5X11 TP C614 CEXD1E479F C ELECTRO 25V RND 4 7MF 5X11 TP C615 CMXM2A272J C MYLAR 100V 2700PF J TP C616 CMXL1J473J C MYL...

Page 45: ...2J R CARBON FILM 1 6 1K OHM J EXCEPT R101 RS01Z430J R M OXIDE FILM 1W 43 OHM J TAPPING EXCEPT R128 RV5426222P R SEMI FIXED RH 0638C 2 2K OHM EXCEPT QC103 T2SA812T2B TR CHIP 2SA812 T2B EXCEPT QC102 T2S...

Page 46: ...CP20 HCQK150JCA C CHIP CERA 50V CH 15PF J 2012 EXCEPT CCP21 HCQK150JCA C CHIP CERA 50V CH 15PF J 2012 EXCEPT CCP22 HCQK150JCA C CHIP CERA 50V CH 15PF J 2012 EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION...

Page 47: ...29G1FST EXCEPT ZZ200 PTPMJAJ638 PCB PIP AXIAL AS DTH 29G1FST EXCEPT ZZ200 PTPMJRJ638 PCB PIP RADIAL AS DTH 29G1FST EXCEPT ZZ300 PTPMMSJ638 PCB PIP MANUAL AS DTH 29G1FST EXCEPT LOC ITEM CODE ITEM NAME...

Page 48: ...0 PTMPMSJ638 PCB MAIN MANUAL AS DTH 29G1FST EXCEPT ZZ290 PTMPMSJ639 PCB MAIN MANUAL AS DTH 25G1FST ADD ZZ130 PTPKCPJ638 PACKING AS DTH 29G1FST EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT ZZ1...

Page 49: ...0 1K OHM J 2012 EXCEPT RC121 HRFT102JCA R CHIP 1 10 1K OHM J 2012 EXCEPT RC116 HRFT272JCA R CHIP 1 10 2 7K OHM J 2012 EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT RC117 HRFT471JCA R CHIP 1 10...

Page 50: ...EXCEPT LP04 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT LP05 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT LP06 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT XP04 5XE20R480E CRYSTAL QUA...

Page 51: ...EXCEPT CCP31 HCQK471JCA C CHIP CERA 50V CH 470PF J 2012 EXCEPT CCP05 HCTAD479MB C CHIP TANTAL 10V 4 7MF M 3216 EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT CCP17 HCTAF109MB C CHIP TANTAL 16V...

Page 52: ...PKCPJ638 PACKING AS DTH 29G1FST EXCEPT ZZ130 PTPKCPJ639 PACKING AS DTH 25G1FST ADD ZZ200 PTPMJ2J638 PCB PIP CHIP B AS DTH 29G1FST EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT ZZ200 PTPMJAJ638...

Page 53: ...NAME DESCRIPTION ADD EXCEPT CCA15 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 EXCEPT CCA20 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 EXCEPT CCA21 HCQK101JCA C CHIP CERA 50V CH 100PF J 2012 EXCEPT J...

Page 54: ...CARTON DW 3 EXCEPT M801 48580531QK BOX CARTON DW 4S ADD M811 4858183900 PAD EPS 29G1 EXCEPT M811 4858185100 PAD EPS 29G3 ADD UT02 4859003750 PLUG PHONE AS PLUG CABLE 1365AWG26 150B EXCEPT P703 4859231...

Page 55: ...CPJ679 PACKING AS DTH 29G3FST ADD ZZ200 PTPMJ2J638 PCB PIP CHIP B AS DTH 29G1FST EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT ZZ200 PTPMJ2J679 PCB PIP CHIP B AS DTH 29G3FST ADD ZZ200 PTPMJAJ6...

Page 56: ...3 5MM EXCEPT LP02 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT LP04 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT LP05 5CPZ680K02 COIL PEAKING 68UH K AXIAL 3 5MM EXCEPT LP06 5CPZ680K02 COIL P...

Page 57: ...CA C CHIP CERA 50V CH 15PF J 2012 EXCEPT CCP22 HCQK150JCA C CHIP CERA 50V CH 15PF J 2012 EXCEPT CCP38 HCQK220JCA C CHIP CERA 50V CH 22PF J 2012 EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT CC...

Page 58: ...RONT AS DTH 29G1FST EXCEPT LOC ITEM CODE ITEM NAME DESCRIPTION ADD EXCEPT ZZ200 PTFMSJJ679 MASK FRONT AS DTH 29G3FST ADD ZZ200 PTMPJ0J638 PCB MAIN RHU AS DTH 29G1FST EXCEPT ZZ200 PTMPJ0J692 PCB MAIN R...

Page 59: ...B EXCEPT QCP08 T2SA812T2B TR CHIP 2SA812 T2B EXCEPT QC102 T2SC2412KB TR CHIP 2SC2412K T146 BR EXCEPT QCP02 T2SC2412KB TR CHIP 2SC2412K T146 BR EXCEPT QCP03 T2SC2412KB TR CHIP 2SC2412K T146 BR EXCEPT L...

Page 60: ...EXPLODED VIEW 29 18 19 20 21 22 23 24 25 26 27 2 3 4 5 6 7 8 9 10 13 12 11 14 15 16 17 28 1 DTH 29G1...

Page 61: ...EXPLODED VIEW DTH 29G3...

Page 62: ...EXPLODED VIEW DTH 29G5...

Page 63: ...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 G7F00E web dwe co kr FAX 02 360 8184 TEL 02 360 8179 8180 PRINTED DATE N...

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