Akai LCT3785TAJ Service Manual Download Page 45

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Summary of Contents for LCT3785TAJ

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Page 2: ...sic Operation Circuit Description 36 38 7 Main IC Information 39 77 8 Panel Information 78 103 9 Explored View 104 10 Spare Pare List 105 107 11 If you forget your V chip Password 108 12 Software Upgr...

Page 3: ...ll accumulators rechargeable batteries mini batteries cells and starter batteries should not be thrown into the garbage can Please leave them at an appropriate depot SAFETY INSTRUCTION The service sho...

Page 4: ...etc 6 When servicing is required observe the original lead dressing Extra precaution should be given to assure correct lead dressing in the high voltage area 7 Keep wires away from high voltage or hig...

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Page 8: ...G B each 256 scales Gray Scale 256 R G B each 8 bit High Brightness 500cd m2 Contrast Dark Room 1000 1 Typical TV System NTSC M ATSC Sound Mono Stereo SAP BTSC Sound Effect Spatial Effect and Surround...

Page 9: ...ntal Frequency kHz Vertical Frequency Hz 480i 15 734 59 94 480p 720x480 31 468 59 94 720p 1280x720 45 00 60 00 1080i 1920x1080 33 75 60 00 When the signal received by the Display exceeds the allowed r...

Page 10: ...s Stereo Mono or Separate Audio Program SAP broadcast Enter Press to move the on screen cursor To Remote Control select an item press Enter to confirm Exit Press to return or exit the OSD menu Menu Pr...

Page 11: ...ime press Sleep repeatedly until sleep OFF appears P Mode Adjust the TV picture by selecting one of the preset factory settings such as Hi Bright User Cinema Normal and Vivid System Press repeatedly t...

Page 12: ...DMI Receiver HDMI YPbPr1 YPbPr2 Option VGA AV S Video Audio X2 Audio X3 QS3VH257 Switch Option HEF4052 Switch WM8776 Audio ADC DAC To panel Flash 8M 16M DDR 128M DDR 128M R2S15102 Class D Amplifier PO...

Page 13: ...2 3 3 4 4 5 5 9 9 8 8 7 7 6 6 1 1 H2 HOLE GND H2 HOLE GND R637 10K R637 10K 1 2 3 4 5 6 7 8 9 10 11 J6 11x1 DIP11 P2 54 J6 11x1 DIP11 P2 54 CB2 0 1uF NC CB2 0 1uF NC CB5 0 1uF CB5 0 1uF R645 10K R645...

Page 14: ...FB CE9 100uF 16v CE9 100uF 16v CE108 220uF 16v CE108 220uF 16v CE10 100uF 16v CE10 100uF 16v L4 FB L4 FB CE109 220uF 16v CE109 220uF 16v CB18 0 1uF CB18 0 1uF CE7 100uF 16v CE7 100uF 16v CE78 100uF 1...

Page 15: ...t Checked MT8202E PBGA388 1 C 3 17 Thursday April 20 2006 AKAI_MT8202_27US_LVDS_V0 0 KAWA Confidential Designer Checker Title Size Document Number Rev Date Sheet Checked MT8202E PBGA388 1 C 3 17 Thurs...

Page 16: ...C0805 SMD C49 10uF 10v C0805 SMD CE29 10uF 10V CE29 10uF 10V CB46 0 1uF CB46 0 1uF C20 1uF C20 1uF C11 4 7uF C11 4 7uF C3 10uF 10v C0805 SMD C3 10uF 10v C0805 SMD CE30 10uF 10V CE30 10uF 10V FB6 FB B...

Page 17: ...30 0 1uF CB127 0 1uF CB127 0 1uF C55 3300pF C55 3300pF CB99 0 1uF CB99 0 1uF CB105 0 1uF CB105 0 1uF CB92 0 1uF CB92 0 1uF CB82 0 1uF CB82 0 1uF CB124 0 1uF CB124 0 1uF R80 22 R80 22 CE47 220uF 16v CE...

Page 18: ...IOVCC33 120 CGND18 113 IOGND33 106 QE7 114 QE6 115 QE8 111 QE5 116 QE1 123 RX1 58 RX1 59 QE9 110 WS 75 SCK 76 HSYNC 128 VSYNC 1 DE 127 CEN 2 SOG_IN 3 OSC_IN 4 NC 5 IOVCC33 7 IOGND33 6 NC 8 KWP 9 KSDA...

Page 19: ...1K NC R786 0 NC R786 0 NC GND 10 VCC 20 DIR 1 A0 9 A1 8 A2 7 OE 19 B7 18 A3 6 A4 5 A5 4 A6 3 A7 2 B0 11 B1 12 B2 13 B3 14 B4 15 B5 16 B6 17 U31 74LVC245A U31 74LVC245A R222 0 NC R222 0 NC R358 10k R3...

Page 20: ...C 16 I1C 10 YC 9 U39 QS3VH257 TSSOP16 SMD U39 QS3VH257 TSSOP16 SMD R373 100k R373 100k R443 0 NC R443 0 NC R368 10K R368 10K R627 0 NC R627 0 NC 1 2 3 4 5 6 7 8 J32 DIP8 W H P2 0 J32 DIP8 W H P2 0 L76...

Page 21: ...70 22 L70 22 TP54 TP54 CE126 10uF 25v CE126 10uF 25v R408 10k R408 10k 1 3 2 Q34 2N3906 Q34 2N3906 R409 10k R409 10k R750 100 R750 100 CB194 0 1uF CB194 0 1uF CE150 10uF 25V CE150 10uF 25V R246 10K NC...

Page 22: ...S_V0 0 1 C 10 17 Thursday April 13 2006 AUDIO VIDEO IN CIRCUIT KAWA Confidential Designer Checker Title Size Document Number Rev Date Sheet Checked AKAI_MT8202_27US_LVDS_V0 0 1 C 10 17 Thursday April...

Page 23: ...C641 0 1uF R159 47K R159 47K C642 0 1uF C642 0 1uF 1 3 2 D69 DIODE SMD BAV99 D69 DIODE SMD BAV99 1 3 2 D71 DIODE SMD BAV99 D71 DIODE SMD BAV99 C639 0 1uF C639 0 1uF C638 0 1uF C638 0 1uF R138 68 R138...

Page 24: ...R102 0 NC R102 0 NC R99 10K NC R99 10K NC R93 4 7k NC R93 4 7k NC CE95 220uF 16v NC CE95 220uF 16v NC R18 10K NC R18 10K NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28...

Page 25: ...KAWA Confidential Designer Checker BACK LIGHT CIRCUIT KEYPAD ADC KEY GPIO KEY KEYPAD C99 1000pF C99 1000pF 1 3 2 Q32 2N3904 SOT23 SMD Q32 2N3904 SOT23 SMD R389 10K R389 10K 1 3 2 Q17 2N3904 NC Q17 2N...

Page 26: ...23 GND4 24 AF MPX 14 VS_IF 13 NC 1 BT 2 AFC 7 NC 8 TU1 FQ1236 MK3 TU1 FQ1236 MK3 C646 10nF C646 10nF R422 1 8K R422 1 8K C649 820pF C649 820pF CE630 220uF 16V CE630 220uF 16V CB243 0 1uF CB243 0 1uF R...

Page 27: ...1 1 8uH R133 75 R133 75 C58 47pF C58 47pF C60 47pF C60 47pF C105 220pF C105 220pF C170 47pF NC C170 47pF NC L96 1 8uH L96 1 8uH 1 3 2 D102 DIODE SMD BAV99 D102 DIODE SMD BAV99 FB27 0 FB27 0 L103 0 L10...

Page 28: ...TAL GPIO PWM0 DIMMING GPIO PWM1 BACKLIGHT ON OFF SDA1 TO MT5351 I F REQUEST GPIO1 NO USE SCL1 TO MT5351 I F READY CCIR_V 0 3 KEYPAD DE GPIO DVD IR VCLK KEPAD CH F_A21 KEYPAD LED RED ADCIN4 FOR TUNER A...

Page 29: ...60 NC D65 SR260 NC CE166 1000uF 35v CE166 1000uF 35v R238 0 NC R238 0 NC R783 0 R783 0 R758 0 NC R758 0 NC L117 0 L117 0 CE161 2 2uF 50v CE161 2 2uF 50v R155 0 R155 0 3 1 2 4 L21 ACM3225 102 2P L2 5X3...

Page 30: ...NAL 01 INDEX AND INTERFACE 02 POWER 03 TUNER 04 MT5111 ASIC 05 MT5351 ASIC 06 MT5351 PERIPHERAL 07 DDR MEMORY 08 NOR FLASH JTAG UART GND GROUND GROUND MT5111 MT5351 REFERENCE DESIGN 4 LAYERS MT5351RA...

Page 31: ...UT 2 IN 3 L4 FB BEAD SMD 0805 CE6 220uF 16v C220UF16V D6H11 U6 AZ1117 adj SOT223 SMD ADJ GND 1 OUT 2 IN 3 CB9 0 1uF C0603 SMD U4 AZ1117 adj SOT223 SMD ADJ GND 1 OUT 2 IN 3 U2 AZ1117 adj SOT223 SMD ADJ...

Page 32: ...BEAD SMD 0805 CB18 0 1uF C0603 SMD C7 1uF C0603 SMD L12 NS L IND SMD 0805 CE18 10uF 16v C10UF16V D5H11 R22 510 1 R0603 SMD R17 NS R0603 SMD R21 510 1 R0603 SMD R18 100 R0603 SMD R16 10K R0603 SMD U9...

Page 33: ...C0603 SMD CB38 0 1uF C0603 SMD CB36 0 1uF C0603 SMD R31 4 7K R0603 SMD C13 1uF C0603 SMD QF2 2N7002 N MOSFET 2 1 3 RN12 33x4 RN0603 SMD 1 2 3 4 5 6 7 8 CB32 0 1uF C0603 SMD CB24 0 1uF C0603 SMD C11 1...

Page 34: ...D4 APLLCAP0 E4 AGND L11 AGND L12 AGND L13 AGND M11 AGND M12 AGND M13 AGND N11 AGND N12 AGND N13 PDD0 A27 PDD1 B26 PDD2 A26 PDD3 C25 PDD4 B25 PDD5 A25 PDD6 D24 PDD7 C24 PDCD1 A28 CVDD M5 CVDD N5 CVDD...

Page 35: ...50 4 7uF C0805 SMD CB72 0 1uF C0603 SMD R44 NS 10 R0603 SMD CB75 0 1uF C0603 SMD C29 10uF 10v C0805 SMD C104 0 1uF C0603 SMD X1 VCXO FR270003 OSC 6P SMD 7X5 CVIN 1 TRI STATE 2 GND 3 OUT 4 NC 5 VDD 6 C...

Page 36: ...R69 47 C170 0 1uF C0603 SMD RN14 22x4 1 2 3 4 5 6 7 8 R76 75 C109 0 1uF C0603 SMD R107 100 R0603 SMD U18 16M x 16 DDR TSOP 66 TSOP_0D65_22D6LX9D7W_66SP VDD 1 DQ0 2 VDDQ 3 DQ1 4 DQ2 5 VSSQ 6 DQ3 7 DQ4...

Page 37: ...R0603 SMD C32 NS 10pF C0603 SMD CB152 0 1uF J3 10x2 DIP10X2 W H IDE P2 54 1 3 5 7 9 11 13 15 17 19 2 4 6 8 10 12 14 16 18 20 R97 0 R0603 SMD R98 4 7K R0603 SMD R83 NS 4 7K R0603 SMD CB153 0 1uF U22 M...

Page 38: ...ng 3 pcs Extension PCB 1 pcs Timming controller board and 1 pcs Back Light board in the Module SET There are 6 pcs PCBs including 1 pcs ATV Tuner board 1 pcs keypad board 1 pcs Remote Control Receiver...

Page 39: ...HDMI signals and D SUB signals to digital ones and to transmit to Control board 3 Control board Dealing with the digital signal for output to panel 4 Extension board Output addressing signals 5 ATV Tu...

Page 40: ...e Make sure status Mute Internal External speaker c No picture but with signals output OSD and back light d Abnormal noise on screen 3 POWER NO picture no power output 4 Back Light a No picture b Flas...

Page 41: ...ARM 926EJ with 16K I Cache and 16K D Cache It can support 64Mb to 1Gb DDR DRAM devices with configurable 32 64 bit data bus interface MT8202 MT8202G is a highly integrated Single Chip for LCD TV suppo...

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Page 67: ...ration mode 10Wx2ch VD 24V at 8 BTL operation mode 20Wx1ch VD 18V at 8 The RENESAS original circuits realize high power efficiency low noise and low distortion characteristics Pop sound Less Built in...

Page 68: ...13 PWM input pin 2 for phase compensation SE operation Protection Timer pin At protection mode the output becomes L level The timing capacitor is connected Capacitor connection pin for analog block re...

Page 69: ...ting on PCB printed circuit board Size 75mm x 75mm 2 5W Without External Heat Sink 1 Double PCB copper planes t 0 035mm are needed and each size is almost 7 mm X 7 mm 4layer PCB Pd 6 3W With Infinite...

Page 70: ...rmal via PCB size estimation 10Wx2ch 75mm x 75mm The exposed die pad is directly soldered with the printed circuit board pattern GND plane PCB Power plane the economy design 2 layer PCB Thermal Via Ri...

Page 71: ...at SE dB 80 TBD Mute Attenuation Mute dB 50 TBD dVD 100mVrms f 100 Hz Ripple Rejection Ratio PSRR W 20 TBD THD 10 VD 18V RL 8 at BTL at SE 93 TBD Po 10 10W Power Efficiency Eff uVrm D s TB 100 A Weigh...

Page 72: ...u 1000u 0 047u R for GND 150k R for GND 47k R for GND 47k 15uH Vz 27 V Vz 27 V Exposed Die Pad STBYL ROSC OUT1 HB1 VD1 VS1 IN1 MUTEL CBIAS AVDD OUT2 VD2 VS2 PROT HB2 DVDD IN2 GND 3 4 2 5 1 9 8 7 10 6...

Page 73: ...11 12 13 16 17 18 20 19 PWM2 PWM1 47k 10k 0 47u 10u 22k 8 R2S15102 10u 0 1u 0 1u 3p 150k 150k 3p STANDBY 47k 0 1u 0 1u 0 1u 1000u 0 047u R for GND 150k Vz 27 V FB FB If this speaker lines is very sho...

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Page 80: ...CPT TFT LCD CLAA370WA02 78 126...

Page 81: ...5 1 Timing Specification 5 2 Timing Chart 5 3 Color data assignment 6 BLOCK DIAGRAM 6 1 TFT LCD Module 6 2 Backlight Unit 7 MECHANICAL SPECIFICATION 7 1 Front side 7 2 Rear side 8 OPTICAL CHARACTERIST...

Page 82: ...isplay Area 819 6 H 460 8 V 37 0 inch diagonal mm Number of Pixels 1366 H 768 V 16 9 Pixel Pitch 0 6 H 0 6 V mm Bezel Opening Area 826 6 x 467 8 mm Color Pixel Arrangement RGB Vertical Strip Display M...

Page 83: ...tg 20 60 1 2 Note1 The relative temperature and humidity range are as below sketch Humidity 85 RH without condensation Relative Humidity 90 Ta 40 Wet Bulb Temperature 39 Ta 40 Note2 If you use the pro...

Page 84: ...LCD power consumption Pc 6 84 W High input voltage of LVDS VIN 100 mV Low input voltage of LVDS VIN 100 mV nput common voltage of LVDS VCM 1 25 V Input terminal resist of LVDS RT 100 ohm 4 Note 1 The...

Page 85: ...under condition at Vcc 12V Ta 25 2 fv 60Hz whereas a power dissipation check pattern below is displayed a White pattern b Black pattern c RGB Stripe pattern Note 4 LVDS signal definition RT VID VIN V...

Page 86: ...able Value Parameter Min Typ Max Unit T1 1 30 ms T2 0 50 ms T3 0 50 ms T4 2000 ms T5 1000 ms T6 100 ms Note 1 Please avoid floating state of interface signal at invalid period Note 2 When the interfac...

Page 87: ...2700 Vrms ON 2 0 5 Backlight on off control voltage OFF VBLON 0 0 8 V BLW0 140 4 Power consumption BLW 130 W 5 Note 1 Lamp Current measurement method The current meter is connected to low voltage end...

Page 88: ...onds Note5 25 C VDIM 5V MAX After power on for 30 Minutes Note6 Electrical and optical characterisitics color chromaticity are not included for being maintainable in a range 10 when the inverter opera...

Page 89: ...RxIN0 Data 7 GND Ground 8 RxIN1 Data 9 RxIN1 Data 10 GND Ground 11 RxIN2 Data 12 RxIN2 Data 13 GND Ground 14 RxCLKIN Clock 15 RxCLKIN Clock 16 GND Ground 17 RxIN3 Data 18 RxIN3 Data 19 GND GND 20 NC N...

Page 90: ...MSBs and R G B 0 s are LSBs Non JEIDA SPEC R1 R0 R1 B5 B4 B3 B2 B3 B2 G1 B1 G5 B0 G4 G3 G2 G1 G2 R7 R6 Preserve 2 Pin 27 NC JEIDA mode B4 DENA B5 B5 B6 B7 B4 R3 R2 R6 R7 G2 R4 R5 R3 R2 G4 G3 B3 B2 G6...

Page 91: ...V 4 VBL Supply Voltage 24V 5 VBL Supply Voltage 24V 6 GND Ground 7 GND Ground 8 GND Ground 9 GND Ground 10 GND Ground 11 NC NC Test pin or else 12 BLON ON OFF Control 1 13 VDIM 0V 5V 2 14 GND GND Note...

Page 92: ...MHz Frame Rate Fr 47 60 63 Hz Total Tv 790 810 888 Th Tv Tvd Tvb Display Tvd 768 768 768 Th Blank Tvb 22 42 120 Th Total Th 1575 1648 1936 Tc Th Thd Thb Display Thd 1366 1366 1366 Tc Blank Thb 209 282...

Page 93: ...0 0 0 0 0 0 0 0 0 0 0 Red 254 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Red 255 Bright 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Green 000 Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 94: ...river Controller LVDS input DC DC Converter Reference Voltage Input Connector 30Pins 12V LVDS 5 Pairs Option Back Light Unit BL Inverter 24V 5V Gate Driver IC G1 G768 6 2 BACKLIGHT UNIT LV1 HV HV Note...

Page 95: ...7 MECHANICAL SPECIFICATION 7 1 FRONT SIDE Include Inverter if the dimension is not clear please refer to the table Unit mm 93 126...

Page 96: ...7 2 REAR SIDE Include Inverter if the dimension is not clear please refer to the table Unit mm 94 126...

Page 97: ...sec 6 Horizontal 80 80 85 85 2 3 View angle Vertical CR 10 Point 5 80 80 85 85 2 3 Crosstalk Ratio CMR 0 1 3 7 Red Rx Ry TBD TBD TBD Green Gx Gy TBD TBD TBD Blue Bx By TBD TBD TBD Color Chromaticity W...

Page 98: ...F Black Luminance Note 2 Definition of Luminance Luminance uniformity Contrast and the Deviation of Color Coordinate Luminance and Contrast To measure at the center position 5 on the screen NO 5 see F...

Page 99: ...nse Time White Black Luminance 90 90 10 tr tf White 255th Black 0 10 Figure 8 3 Definition of Response Time White Black Note 5 Definition of Response Time Gray to Gray 5 5 levels Luminance 90 90 10 tr...

Page 100: ...order to stabilize the luminance the measurement should be executed after lighting Backlight for 1 hour in a windless room Note6 Image sticking test method Continuously display the test pattern shown...

Page 101: ...384 measurement point 1024 576 White Gray127 Black Gray 127 0 0 683 672 171 384 341 192 Pattern A Pattern B1 Pattern B2 Pattern C Gray 127 White 683 96 Figure 8 6 Cross Talk Note 8 Definition of Colo...

Page 102: ...al wave 2ms Number of shocks one shock input in each direction of three mutually perpendicular axes for a total of six shock inputs Vibration Non Operation Vibration level 9 8m s2 1 0G zero to peak Wa...

Page 103: ...asure Design the inverter location and connector position carefully so as not to put stress on lamp cable Keep sufficient clearance between LCD module and the other parts such as inverter and speaker...

Page 104: ...attention to ordinary electronic parts 10 3 PRECAUTIONS WITH ELECTROSTATICS 1 This LCD module use CMOS IC on circuit board and TFT LCD panel and so it is easy to be affected by electrostatics Please b...

Page 105: ...e pay attention to the followings Packaging box and inner case for LCD are designed to protect the LCD from the damage or scratching during transportation Please do not open except picking LCD up from...

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Page 107: ...Y MAIN S MT8202 FOR LCT32 37 1 000000 SET K 7 771S42D102 02 ATSC TUNER PCB ASS Y MT5111CE W O MAX3232 1 000000 SET K 8 200 L37AD21 01AA CABINET FRONT SILVER BLACK LCT3701AD LPL PANEL USA A 1 000000 Pi...

Page 108: ...LDING COVER 1 000000 Piece S 29 486 M32111 01 NAME PLATE M AKAI 1 000000 Piece S 30 522 421D01 01 MASKING PAPER 1 000000 Piece S 31 560 L37AD01 02AP MODEL LABEL AKAI LCT3785TA J S MT8202 USA P 1 00000...

Page 109: ...617 FOR POWER IN PUT 1 000000 Piece S 48 E3421 926112 WIRE ASSY L 540 2 0 2 5 4P FOR 32LCD W EMI 1 000000 Piece S 49 E3461 064040 WIRE ASSY P2 0 14P 3P2 0 8P2 5 L400MM L700MM INVERTER MT8202 1 000000...

Page 110: ...u Use 0 9 buttons input the omnipotence password 8202 then Press Enter button to enter and pop up a menu Use 0 9 buttons input your new password Press button to move to con rm blank Use 0 9 buttons in...

Page 111: ...ng 3 Turn on AC power of the TV and then press the button standby of the remote control The image could be found on the screen of the Plasma TV while the color of the power indicator is green the mode...

Page 112: ...as 115200 7 Select the update binary by pressing browse button For example the binary file name is PDP4210EA1_V09 bin this update firmware will be sent to your side 8 Press Upgrade button and start u...

Page 113: ...9 The update process is successful as the progress bar is 100 After the update process is ok 111 126...

Page 114: ...ing is appeared on the screen Use the remote control and select the mode of Firmware Version and then enter the mode of Firmware Version It is easy to be found the version of the current firmware for...

Page 115: ...Connect another side of RS232 cable 2 to the board 1 2 2 Connect RS232 VGA cable 4 RS232 side to the board 1 Connect RS232 VGA cable 4 VGA side to the TV 113 126...

Page 116: ...2 3 Connect USB cable 5 to the board 1 Connect another side of USB cable 5 to PC 3 Cables Standard for Upgrade Board 114 126...

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Page 120: ...rn on AC power of the TV and then press the button standby of the remote control The image could be found on the screen of the Plasma TV while the color of the power indicator is green the mode of the...

Page 121: ...oose the bit rate as 115200 7 Select the update binary by pressing browse button For example the binary file name is XXXX_PDP4210EA1_000000XX_X_P bin this update firmware will be sent to your side 119...

Page 122: ...of the firmware for MT5351AG which has been download into the Plasma TV Press Menu button of the remote control and the main OSD menu is appeared on the screen Use the remote control and select the DT...

Page 123: ...rd 1 Parts List Software upgrade board x 1 1 RS232 null cable x 1 for PC 2 RS232 null cable x 1 for DTV 3 USB cable x 1 5 2 Installation for DTV upgrade 2 1 Connect RS232 cable 2 to PC serial port Con...

Page 124: ...2 2 Connect RS232 cable for DTV 3 to the board 1 Connect another side of RS232 cable for DTV 3 to the TV 2 3 Connect USB cable 5 to the board 1 Connect another side of USB cable 5 to PC 122 126...

Page 125: ...3 Cables Standard for Upgrade Board 123 126...

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