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S/M No : TCM405FEF0
Service Manual
Color Television
CHSSIS MODEL
CM-405F DTH-2930SSFV
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.
MAY. 2006
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TABLE OF CONTENTS SAFETY PRECAUTIONS 2 SPECIFICATIONS 5 CIRCUIT BLOCK DIAGRAM 6 ALIGNMENT INSTRUCTIONS 7 YOUR REMOTE CONTROL 7 SERVICE MODE ADJUSTMENT 8 ASSEMBLY ADJUSTMENT 10 APPENDIX(Appendix is provide only by internet[http://svc.dwe.co.kr]) IC DESCRIPTION 14 UOC III SERIES 14 TDA8358J VERTICAL AMPLIFIER 22 TDA6107AJF 24 24WC16-16 KB EEPROM 25 LA42072N-E AUDIO AMPLIFIER 26 STR-W6735/56 27 WAVEFORMS 28 TROUBLE SHOOTING GUIDE 30 NO POWER 30 NO PICTURE 31 NO SOUND 32 CH DON’T MEMORY or SKIP 33 N
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SAFETY PRECAUTIONS CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. SUBJECT : X-RADIATION NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFAC- TURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSON- THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANT RESULT- NEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL ING PROPERTY DAMAGE OR USER INJURY. SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TU
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SAFETY PRECAUTIONS CAUTION : Do not attempt to modify this product in any way. Unau- The lightning flash with arrowhead symbol, thorized modifications will not only void the warranty, but may lead to your within an equilateral triangle, is intended to alert being liable for any resulting property damage or user injury. the service personnel to the presence of uninsu- Service work should be performed only after you are thoroughly familiar lated “dangerous voltage” that may be of suffi- with all o
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SAFETY PRECAUTIONS SUBJECT : IMPLOSION 4. Wall and shelf mounted installations using a commercial mounting kit, must follow the factory approved mounting instructions. A 1. All direct viewed picture tubes are equipped with an integral implo- receiver mounted to a shelf or platform must retain its original sion protection system, but care should be taken to avoid damage feet(or the equivalent thickness in spacers) to provide adequate are during installation. Avoid scratching the tube. If scratche
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SPECIFICTION Model DTH-2930SSFV Item CHASSIS CM-405F TV Standard NTSC-M, PAL-M, PAL-N Power Input AC 110-220V, 50/60Hz Power Consumption 110W Tuning System Frequency Synthesizer(FS) Tuning System Tuning Ranges TV VHF(L) : CH2 - CH6 UHF(H) : CH7 - CH13 UHF : CH14 - CH69 CATV VHF(L) : 5A, A,B,A-5-A-1,CH2-CH6 VHF(H) : C-W+11,CH7 - CH13 UHF : W+12-W+84 ” Sound Output 6W + 6W Speaker 8 ohm 12W x 2EA Antenna Input Impedance 75 ohm Unbalanced Auxiliary Input Terminal Side : Video, Audio(L,R) - AV2
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CIRCUIT BLOCK DIAGRAM -6- AC 120/220V 50/60Hz 250V +139.5V D801 +65V +139.5V +195V
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ALIGNMENT INSTRUCTION Your Remote Control(R-48C04) R-48C12 1.POWER 1.POWER Use this button to turn your TV on or off. Use this button to turn your TV on or off. 2.MUTE 2.MUTE Use to turn the TV’s sound on and off. Use to turn the TV’s sound on and off. 3.WCHV 3.WCHV Use these buttons to change channels on your TV, or select items Use these buttons to change channels on your TV, or select items in the menu system. in the menu system. 4.CVOLB 4.CVOLB Use these buttons to change your TV's volume, t
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ALIGNMENT INSTRUCTION 1. SERVICE MODE ADJUSTMENTS Follow the steps below whenever service adjustment is required. See Table- A and Table- B to determine if service adjustments are required. 1) How to enter the service mode using the user remote control. - Turn the set on. - Direct the remote control to the reception window of TV. - Push buttons of remote control in sequence as follows. 1 → MUTE → DISPLAY → MUTE - Then, the screen will appear as follows. SERVICE 72 SERVICE 02 SERVICE 03 SERVICE
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ALIGNMENT INSTRUCTION -9-
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ALIGNMENT INSTRUCTION 2. ASSEMBLY ADJUSTMENTS 1) SCREEN ADJUSTMENT (S2) Enter the service mode and select service adjustment S2. You can see the one horizontal line on the screen. Adjust the Screen Control Volume (located on FBT) so that the horizontal line onscreen may be disappeared. Press S2 button to exit in the screen adjustment mode. 2) FOCUS ADJUSTMENT Turn in a local station and adjust the Focus Control knob (located on FBT) for best picture details at high light condition. 3) AGC
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ALIGNMENT INSTRUCTION 4-2) Vertical Position Adjustment. - Select V.SLOPE item, adjust V.SLOPE data value till the horizontal line in the centre of the video signal is just at the position where the blanking stars. - Select V.CENTER item, adjust V.CENTER data value to center the raster properly on the screen. 4-3) Vertical Size Adjustment - Select V.SIZE item, adjust V.SIZE data value to proper vertical size as follows. 4-4) Horizontal Position Adjustment - Select H.CENTER item, adjust H.CENT
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ALIGNMENT INSTRUCTION 4-4). EAST / WEST Adjustment Adjust the H.PARALLEL, H.SIZE, H-BOW, PARABOLA, EW TRAPEZ, CORNER TOP, CORNER BOTTOM to compensate for geometrical distortion. H.PARALLEL H.SIZE PARABOLA CORNER TOP, CORNER BOTTOM EW TRAPEZ -12-
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ALIGNMENT INSTRUCTION -13-
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IC DESCRIPTION 1. UOC III SERIES 1-1. UOC III BLOCK DIAGRAM -14-
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IC DESCRIPTION HERCULES FULL-STEREO (SSDIP90) (standard version) -15- VSSC 90 1 VDDA(1.8V) P0.5/INT0//P1.2 2 89 VREFAD VDDA3(3.3V) 88 VDDC(1.8)/RESET 3 87 4 GNDA2 P1.0/INT1 86 VDDA2(3.3V.) P1.1/T0 5 BO 85 P1.3/T1 6 GO 84 P1.6/SCL1 7 83 RO P1.7/SDA 8 82 BLKIN VDDP(3.3) 9 81 P2.0/TPMW//P0.4 BCLIN 10 P2.1/PWM0//P0.1 80 11 VP3 P3.0/ADC0 12 79 GND3 78 P3.1/ADC1 B/P -3 13 B 77 G/Y-3 P3.2/ADC2 14 76 R/P -3 P3.3/ADC3 R 15 VDDA1(3.3V) 75 INSSW3 16 74 YOUT GNDA1 17 73 XTALIN 18 YSYNC 72 XTALOUT 19 CVBSX 7
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FULL-STEREO/ MONO+ AV STEREO SSDIP90 IC DESCRIPTION STANDARD VERSION SYMBOL DESCRIPTION VSSP2 1 ground VSSC4 1 ground VDDC4 3 digital supply to SDACs (1.8V) VDDA3(3.3V) 16 supply (3.3 V) VREF_POS_LSL 16 positive reference voltage SDAC (3.3 V) VREF_NEG_LSL+HPL 17 negative reference voltage SDAC (0 V) VREF_POS_LSR+HPR 16 positive reference voltage SDAC (3.3 V) VREF_NEG_HPL+HPR 17 negative reference voltage SDAC (0 V) VREF_POS_HPR 16 positive reference voltage SDAC (3.3 V) XTALIN 18 crystal oscilla
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FULL-STEREO/ MONO+ AV STEREO SSDIP90 IC DESCRIPTION STANDARD VERSION SYMBOL DESCRIPTION VIFIN2 29 IF input 2 VSC 30 vertical sawtooth capacitor IREF 31 reference current input GNDIF 32 ground connection for IF ampli er (2) SIFIN1/DVBIN1 33 SIF input 1 / DVB input 1 (2) SIFIN2/DVBIN2 34 SIF input 2 / DVB input 2 AGCOUT 35 tuner AGC output EHTO 65 EHT/overvoltage protection input AVL/SWO/SSIF/ 44 Automatic Volume Levelling / switch output / (2) REFO/REFIN sound IF input / subcarrier reference outp
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FULL-STEREO/ MONO+ AV STEREO SSDIP90 IC DESCRIPTION STANDARD VERSION SYMBOL DESCRIPTION AGC2SIF 44/- AGC capacitor second sound IF nd VP2 45 2 supply voltage TV processor (+5 V) (2) IFVO/SVO/CVBSI 46 IF video output / selected CVBS output / CVBS input AUDIOIN4 - audio 4 input AUDIOIN4L 47 audio-4 input (left signal) AUDIOIN4R 48 audio-4 input (right signal) CVBS4/Y4 49 CVBS4/Y4 input C4 - chroma-4 input AUDIOIN2 - audio 2 input AUDIOIN2L 50 audio 2 input (left signal) AUDIOIN2R 51 audio 2 input
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FULL-STEREO/ MONO+ AV STEREO SSDIP90 IC DESCRIPTION STANDARD VERSION SYMBOL DESCRIPTION SVM 62 scan velocity modulation output FBISO/CSY 63 ybac k input/sandcastle output or composite H/V timing output HOUT 64 horizontal output VSScomb 70 ground connection for comb lter VDDcomb 71 supply voltage for comb lter (5 V) nd VIN (R/P IN2/C ) - V-input for YUV interface (2 R input / P input R X R or C input) X nd UIN (B/PBIN2) - U-input for YUV interface (2 B input / PB input) YIN (G/YIN2/CVBS-Y ) 72/-
