Trident IS-TVHD30 Service Manual Download | Manualshive

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12

IC block diagram

1. LA7566

10: AFT output

19: SIF output

9: AGC output

1: TV audio output

5, 6: picture IF input

13: TV video output

8: sound IF input

3: 9V

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Summary of Contents for IS-TVHD30

Page 1: ...COLOR TELEVISION IS TVHD30 ...

Page 2: ...CONTENTS Safety precautions Alignment instructions Working principle analysis of the unit Block diagram IC block diagram Wiring diagram Troubleshooting Schematic diagram 1 3 10 11 12 18 19 21 ...

Page 3: ... all exposed metallic parts of the cabinet the channel selector knob antenna terminals handle and screws to be sure the set is safe to operate without danger of electrical shock Do not use a line isolation transformer during this test Use an A C voltmeter having 5000 ohms per volt or more sensitivity in the following manner connect a 1500ohm 10watt resistor paralleled by a 0 15uF 150V A C type cap...

Page 4: ...ltage avoid being unnecessarily close to the picture tube and the high voltage compartment Do not operate the chassis longer than is necessary to locate the cause of excessive voltage 6 Refer to HV B and Shutdown adjustment procedures described in the appropriate schematic and diagrams Too excessive voltage will cause harmful X ray IMPLOSION 1 All direct viewed picture tubes are equipped with an i...

Page 5: ...the set is longer than 30 minutes at least 1 4 The magnetized CRT will influence the colour purity and focus When the inside degaussing circuit can t degauss thoroughly then an outside degausser is necessary Colour purity and focus adjustment should be executed according to the colour purity and focus adjusts procedures if the colour purity and focus is not good 2 Alignment items and procedure a B...

Page 6: ...xit the factory menu Press the MENU button again and again it can exit the factory menu E2 PROM copy B voltage OSD position AFT adjustment AGC adjustment Screen grid voltage and white balance adjustment Centre of scanning amplitude and raster adjustment Check Video S VHS DVD Colour purity and convergence White balance Sub brightness Picture parts SELF CHECK Filament voltage X ray protection check ...

Page 7: ...G menu fixed the CUT OFF R and adjust the CUT OFF G and the CUT OFF B until the white balance is normal c Select the color and contrast to 0 select the brightness to 50 in the user menu In the factory menu select the LUMINANCE SETTING menu adjust the Brightness min until the back level voltage about 180V Adjust the SCREEN potentiometer until rightmost of gray of the US 7 picture up and down separa...

Page 8: ... and Horizontal and vertical scanning centre and amplitude adjustment of HDTV The unit has the YPBPR terminal it can display the HDTV signal Support the HDTV and TIMING of the VG848 format Support input signal of YPbPr Signal format TIMING of the VG848 format 480I 950 480P 978 576I 969 576P 979 1080I 60Hz 972 720P 60Hz 976 1080P 60Hz 970 When the white balance adjustment the picture mode to STANDA...

Page 9: ... Correction PARAL Parallelogram Correction TCC Top Corner Correction BCC Bottom Corner Correction 4 12 2 YPbPr input 1080I 60Hz format signal Adjustment mode to 4 12 1 5 Check point 5 1 check the high voltage a Check the second anode and GND connect to the high voltmeter b Receive US 7 signal the picture mode to STANDARD measure the high voltage to 30 0KV 1KV c The brightness and contrast to min v...

Page 10: ...8 APPX horizontal and vertical scanning adjustment diagram ...

Page 11: ...9 ...

Page 12: ...main board X701 The Z101 output sends to the pin8 of N101 LA7566 and Z102 output sends to the pin5 and pin6 of N101 The N101 supports PAL and NTSC system it be controlled high low level of MCU N707 M16C 30620SPGP output The level define as follow System X701 pin55 X701 pin53 X701 pin51 X701 pin49 DK 6 5M 0 1 1 0 I 6M 1 0 0 1 BG 5 5M 1 1 0 1 M 4 5M 0 0 0 0 Note 1 high level 0 low level The pin13 of...

Page 13: ...t L R AV2 N707 CPU M16c 30620SPGP N801 PRE VIDEO AMP STV9211 N700 ND decodor scaler Trident EX 11 ROM 24C16 EMST 16161 CRT BOARD LM2423 EMST 16161 I2 C I2 C I2 C I2 C I2 C CRT R G B AV2 video YPbPr1 YPbPr2 CVBS Clamp Blanking R G B R G B AV1 video Y C L R NS01 STEREO DECODER LA72700 L R N302 DDY STV9118 H AMP 2SC5422 V AMP LA78041 I2 C AVOUT V Block diagram ...

Page 14: ...12 IC block diagram 1 LA7566 10 AFT output 19 SIF output 9 AGC output 1 TV audio output 5 6 picture IF input 13 TV video output 8 sound IF input 3 9V ...

Page 15: ...2 input 197 AV2 V input 14 SCL 198 TV V input 16 SDA 200 Y1 PbPr input 190 191 AVOUT V output 186 Pb1 input 28 B output 179 Pr1 input 29 G output 202 Y2 PbPr input 30 R output 34 H SYNC output 31 VM output 37 V SYNC output 9 168 and so on 1 8V 36 CLAMP output 15 5V 1 ...

Page 16: ...4 AV2aduion R input 35 AVOUT audio L output 6 37 TV audio input 8 AVOUT audio R output 38 YPbPr1audio L input 11 audio L output 5 YPbPr1audio R input 19 audio R output 40 YPbPr2audio L input 22 CLOCK 3 YPbPr2audio R input 21 DATA 36 AV1 Saudio L input 20 9V ...

Page 17: ...incushion correction output 1 V SYNC input 25 X ray protection input 18 Vertical high voltage compensation input 31 SDA 17 Horizontal high voltage compensation input 30 SCL 26 horizontal signal output 29 12V 23 vertical signal output ...

Page 18: ...16 5 STV9211 1 R input 1 ABL 3 G input 5 B input 13 SDA 16 G output 19 CLAMP 14 B output 20 BLANK 7 17 5V 18 R output 12 SCL ...

Page 19: ...17 6 LA72700V 5 SIF input 25 R output 11 SDA 26 L output 12 SCL 31 9V ...

Page 20: ...18 Wiring diagram ...

Page 21: ...on Check if it has vertical protection circuit Check the FU501 Check the supply power Measure if the C516 is about 150V Check the D501 and peripheral circuit Check the N501 N502 and peripheral circuit Light No light No signal Turn on Check if the N602 output Check if the pin2 and pin4 of sound amplifier output Check the supply power the pin5 of mute is low level Check if sound processing N601 is n...

Page 22: ...Check if the digital processing board has RGB and H V sync output Check the N700 and peripheral circuit Check if the digital processing board has RGB output Check the digital Check the N801 and peripheral circuit Without raster Raster Check if the H V circuit is normal Check the FBT Check the filament voltage of CRT board Normal Abnormal No No ...

Page 23: ...21 Schematic diagram ...

Page 24: ......

Page 25: ......

Page 26: ... MD15 84 MD16 124 MD17 126 MD18 128 MD19 130 MD20 134 MD21 136 MD22 137 MD23 139 MD24 140 MD25 142 MD26 144 MD27 146 MD28 150 MD29 152 MD30 153 MD31 155 DQM0 59 DQM1 75 DQM2 133 DQM3 149 DQS0 60 DQS1 76 DQS2 132 DQS3 148 MA11 85 MA10 87 MA9 88 MA8 90 MA7 91 MA6 93 MA5 94 MA4 96 MA3 98 MA2 99 MA1 101 MA0 102 MCK0 106 MCK0 107 CS0 109 CS1 111 RAS 113 CAS 114 MVREF 116 WE 118 CLKE 120 BA0 121 BA1 123...

Page 27: ... 16V C7A9 0 1uF C794 0 1uF C765 0 1uF C704 10uF 16V L710 150_Ohm_600mA 1 2 R708 10 SVP EX 208 2 of 2 N700B SVP EX_208 XTALO 1 XTALI 208 PAVSS 207 PAVDD 206 PDVSS 205 PDVDD 204 VREFP_1 195 VREFN_1 194 AVSS_ADC1 193 AVDD_ADC1 192 AIN_N3 203 Y_G2 202 AIN_N2 201 Y_G1 200 AIN_N1 199 CVBS3 198 CVBS2 197 CVBS1 196 CVBS_OUTP 190 CVBS_OUTN 191 AVSS3_BG_ASS 189 AVDD3_AVSP2 188 VREFP_2 184 VREFN_2 183 AVSS_A...

Page 28: ...M 14 WE 15 CAS 16 RAS 17 CS 18 BA 19 MA10 20 MA0 21 MA1 22 MA3 24 VDD 25 VSS 26 MA4 27 MA5 28 MA6 29 MA7 30 MA8 31 MA9 32 N C 33 CKE 34 CLK 35 UDQM 36 N C RFU 37 VDDQ 38 DQ8 39 DQ9 40 VSSQ 41 DQ10 42 DQ11 43 VDDQ 44 DQ12 45 DQ13 46 VSSQ 47 DQ14 48 DQ15 49 MA2 23 VSS 50 C709 1000pF R709 33 C702 0 1uF C722 1000pF C708 1000pF C726 0 1uF C700 0 1uF N702 KM416S1020B VDD 1 DQ0 2 DQ1 3 VSSQ 4 DQ2 5 DQ3 6...

Page 29: ...V POWER FOR SVP EX 3 3V POWER FOR SVP EX L722 L718 N704 SS6117A 1 8 OUT 2 IN 3 GND 1 L714 D702 1N4148 C739 22uF 16V C7A0 0 1uF N703 SS6117A 1 8 OUT 2 IN 3 GND 1 C769 0 1uF L717 L720 L715 C736 22uF 16V C7B9 0 1uF C737 0 1uF C7C0 0 1uF C705 0 1uF C713 22uF 16V C735 22uF 16V C759 22uF 16V C706 22uF 16V L716 C758 22uF 16V L719 L721 C7B5 0 1uF C757 100uF 16V N705 SS6085 1 8 OUT 2 IN 3 GND 1 GND 4 C7B1 ...

Page 30: ...AP3 TV_G H DSUB TV Hsync SELECT Title Size Schematict Name Rev Date Sheet of FB420 G INTERFACE CONNECTOR B 5 6 Wednesday April 06 2005 PNP C744 0 1uF R7Y1 0_DNS R7Y3 0_DNS X700 HEADER_24X2 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 27 28 29 31 32 25 30 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 R7A2 4 7K C7B2 10pF R7Y4 100 C7Y5 0 1uF C752 0 1uF R7A5 10K R799 0 C7B3 10pF...

Page 31: ...7 10K R742 100_DNS R730 0_DNS R722 100 R795 4 7K R724 100 R778 47 TP9 AD6 C717 0 01uF D700 HZ4A2 R752 4 7K R797 10K TP5 AD2 V702 MMBT3906 B C E N708 A290021 A0 12 A1 11 A2 10 A3 9 A4 8 A5 7 A8 27 A11 25 A12 4 A7 5 A14 29 A15 3 A6 6 A9 26 A13 28 A10 23 A16 2 A17 30 WE 31 GND 16 RESET 1 VCC 32 OE 24 CE 22 I Q7 21 I Q5 19 I Q0 13 I Q1 14 I Q2 15 I Q3 17 I Q4 18 I Q6 20 R785 10K N707 M30620SPGP P7_5 T...

Page 32: ...603 TJ3060 01 Ver 1 0 603 TJ27780 01 603 TJ27680 01 ...

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