Audiovox LC17H2 Service Manual
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Audiovox LC17H2 Service Manual

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LCD TELEVISION
FPE1705
( L C 1 7 H 2 )

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Summary of Contents for Audiovox LC17H2

  • Page 1 LCD TELEVISION FPE1705 ( L C 1 7 H 2 )

  • Page 2: Table Of Contents

    CONTENTS Safety instructions………………………………………………………………………..… Adjustment instructions …………………………….…….…………………………….… Trouble shooting ……………………………………………………….…………………… Method of software upgrading……………………………………………………….……… Working principle analysis…………………………………………. …………………………. Block diagram…………………………………………………..…………………………… Main IC block diagram………………………………………………………………….…….. Wiring diagram ……………………………………………………………..……………..Main assembly……………………………………………………………………………..… Identification criteria for the bright spot and dark spot of the LCD screen………..…. Troubleshooting charts………………………………………………………………..……...

  • Page 3: Safety Instructions

    This service manual is only for service personnel to take reference with. Before Attention: servicing please read the following points carefully. Safety instructions 1. Instructions Be sure to switch off the power supply before replacing or welding any components inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): a) Do not touch here and there by hand at will;...

  • Page 4: Adjustment Instructions

    would be unable to work and no way to get it repaired. 2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling.
  • Page 5 2. The alignment flow chart (see below figure) Check if N4, N20, N303 and N302 has been FLASH written. Produce main board and TV board Testing TV board Check main board, TV board and power supply board Check if output 12V and 18V of the power supply board is normal Combined test for general assembly Connect to central signal source, check if various TV functions (station skipping, modulate quantity control etc) and the output of earphone...
  • Page 6 3. Flash writing programs Flash writes memory N4, N20, N303 and N302. 4. Adjustment of power supply board Connect the small power supply board to the power supply board (connect 12V of the small power supply board to X905 of the power supply board, connect 18V of the small power supply board to X906 of the power supply board), then turn on it, check if output is normal.
  • Page 7 LCD resolution of Screen size Factory best Samsung FUJITSU 17” 1280x1024 PHILIPS 8.Performance check a). TV Interfaces Connect RF port to central signal source. Enter station search menu - auto station search. After system adjustment is over, check if there is any station missing and then check semi-auto station search.

  • Page 8: Trouble Shooting

    Trouble shooting Before servicing please check to find the possible causes of the troubles according to the table below. 1.Antenna (signal): Picture is out of focus or jumping Bad status in signal receiving Poor signal Check if there are failures with the electrical connector or the antenna.

  • Page 9: Method Of Software Upgrading

    the signal types. Picture too bright and there is Check if the contrast setting is too high. distortion in the brightest area Possibly the output quality of DVD broadcaster is set too high. It maybe also due to improper terminal connection of the video frequency signal in a certain position of the system.
  • Page 10 Open the software upgrade file holder and double click FlashUpgraderNT (use under window 2000/XP/NT) FlashUpgrader (use under window 98), The following interfaces will show up after running the program: Based on the computer features, set up the serial port (COM Port). Select corresponding serial port (if it’s unable to FLASH WRITE, change to another port).

  • Page 11: Working Principle Analysis

    and it’s OK just switch it on again. Note: Do not shut the power off or turn the TV set on during the FLASH write. Otherwise it may lead to no way for flash to rewrite. Working principle analysis Multi-media liquid crystal TV broadcast and receiving set adopts liquid crystal display screen, which is provided with NTSC color system receiving function in addition to AV input, S-VHS input, high definition signal port for component YPrPb/YcbCr, PC VGA port, earphone output and other signal ports.

  • Page 12: Block Diagram

    Block diagram...

  • Page 13: Main Ic Block Diagram

    Main IC block diagram 1.TPA1517 2.DS90C383A/DS90CF383A...
  • Page 14 3.VCT 38xx A/B VCT 38xxA/B Display RGBOUT Processor Video Comb Panorama Video Color Front-end Filter Scaler Back-end Decoder RGBIN Pict.Improv VOUT VSUPAB GNDAB AOUT MSync Audio Color, Prio VSync I C Master 8-bit PWM 24 kB ROM 14-bit PWM 15:1 Mux 10-bit ADC RESQ 1 kB...
  • Page 15 4.MSP 34x0G...
  • Page 16 5.BA7657F / BA7657S Red 1 input HD 1 input HD Sync signal detector HD 2 input Green 1 input HD output Ground Red output Blue 1 input Ground Green output Red 2 input Composite video input (Sync on Green) Syncsepa Ground Composite sync output Green 2 input...
  • Page 17 6.PW1306...

  • Page 18: Wiring Diagram

    Wiring diagram...

  • Page 19: Main Assembly

    Main assembly 301-UL20H3-31R Remote control (RC-U31R) 615-10448-00 Stand 615-20359-00 Speaker 667-L15H3-55A H-frequency board 667- L17H2-01 Main board 667- L17H2-05 Button board 667- L17H2-09 IR receiving board 667- L17H2S-14 Backlight board 667- L17H2-20 Power supply board Identification criteria for the bright spot and dark spot of the LCD screen Catego Quantity allowed Distance between two spots...

  • Page 20: Troubleshooting Charts

    Troubleshooting charts 1. No raster, no picture and no sound Connect X1 of the digital Display LOGO? Check input 12V and 18V of digital board to X904 of the power board supply board is normal? Check if output H-V sync of R, G, B for Check if output 12V and X601 of TV board.

  • Page 21: Ground 6

    2. No picture Testing wave R.G.B HORS.VES at X7 Check if N1 has 5V Check if input 5V of pin1 power supply and pin2 of X9 Check if the wave of Replace N2 Replace N1 pin33 and pin35 of N1 Check if the wave of pin42 and pin44 of N1 Check if the output wave...
  • Page 22 3. Check flow of the power board: Replace the fuse and check Power board damages Replace D901, MOSFE whether D901, V901 TV901 or fuse blows breakdown Check whether C910 has 12V Replace N901 Check whether pin1 of V901 has wave Check whether N902 is damaged Replace N902 Check whether N902, D907 is...

  • Page 23: Exploded View

    E X P L O D E D V I E W...
  • Page 24 PART LIST OF EXPLODED VIEW PART LIST OF EXPLODED VIEW DESCRIPTION DESCRIPTION PART# PART# FRONT CABINET 780-N02RBJ0G1 LED PIECE 700-60188-100 INFRARED SENSE PCB 667-L17H2-09 ASSY DISPLAY SCREEN 335-17054-00 SCREEN FIXED BRACKET 615-1B408-00 MAIN BOARD 667-L17H2-01 MAIN BOARD SHIELD 859-1A1258-00A COVER SPEAKER ASSY 615-20359-00 DECORATIVE PIECE...

  • Page 25: Part List

    CONNECTION LINE 3501 5.603.300 665-D0002-422 VIDEO LINE YELLOW WHITE RED 666-13529-00 FERRITE BEAD TY35X5X12 742-30005-09 LINE TIE 870-30068-AF0 HOLDER ( GREY 05) 870-3A119-AF0 POWER HOLDER ( GREY 05) 886-31021-00 ACCESSORY BOX (15L) 887-20047-00 ACCESSORY PALSTIC BAG 881-63190-12A BACK PLATE LABEL (FPE1705,AUDIOVOX)
  • Page 26 881-63276-00 RF INSPECTION LABEL (FPE2000,AUDIOVOX 881-63778-00 SERIAL NO. LABEL (FPE1705,AUDIOVOX) 881-63780-00 PDF417 LABEL (FPE1705,AUDIOVOX) 881-63777-00 BAR CODE LABEL (FPE1705,AUDIOVOX) 681-40002 CERTIFICATE LABEL 665-D0002-576 LVDS LINE 20-PINS210mm 881-63329-00 LABEL (FPE2000,AUDIOVOX) 780-N02RBJ0G1 FRONT CABINET (ABS V0 SILVERY WHITE 06SILK-SCREEN 886-31574-030W CARTON BOX (FPE1705,AUDIOVOX)
  • Page 27 364-93202-00 AV JACK AV306-2 X604 364-93202-00 AV JACK AV306-2 X607 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C622 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C623 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C353 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C439 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C440 464-6D810-M1 ELECTROLYTIC CAPACITOR CD110-16V-1000uF-M C304 471-2010K-003 PEAKING COIL SPT0305-100K-5 L202...
  • Page 28 455-12115-H0 SMD RESISTOR FTR0603151JR R310 455-12115-H0 SMD RESISTOR FTR0603151JR R311 455-12143-H0 SMD RESISTOR FTR0603431JR R208 455-12147-H0 SMD RESISTOR FTR0603471JR R204 455-12156-H0 SMD RESISTOR FTR0603561JR R331 455-12156-H0 SMD RESISTOR FTR0603561JR R335 455-12210-H0 SMD RESISTOR FTR0603102JR R318 455-12210-H0 SMD RESISTOR FTR0603102JR R401 455-12210-H0 SMD RESISTOR FTR0603102JR R417...
  • Page 29 455-22051-H0 SMD RESISTOR RC11-1/8W-51-J R305 455-22051-H0 SMD RESISTOR RC11-1/8W-51-J R306 455-22051-H0 SMD RESISTOR RC11-1/8W-51-J R307 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R601 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R602 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R607 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R626 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R309 455-22075-H0 SMD RESISTOR RC11-1/8W-75-J R301...
  • Page 30 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C324 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C326 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C328 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C331 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C343 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C352 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C357 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C408 456-2410R-C1 SMD CAPACITOR C1608Y5V1E104ZT C425...
  • Page 31 666-13203-00 FERRITE BEAD STPB3216-800PT L615 666-13203-00 FERRITE BEAD STPB3216-800PT L616 666-13203-00 FERRITE BEAD STPB3216-800PT L618 666-13203-00 FERRITE BEAD STPB3216-800PT L624 666-13203-00 FERRITE BEAD STPB3216-800PT L625 666-13203-00 FERRITE BEAD STPB3216-800PT L626 666-13203-00 FERRITE BEAD STPB3216-800PT L632 782-L15H3-550C HIGH FREQUENCY PCB 342-08470-90 SMD TRANSISTOR BC847AW V604 342-08470-90...
  • Page 32 464-6D647-M0 ELECTROLYTIC CAPACITOR CD110-16V-47uF-M C607 464-6D722-M0 ELECTROLYTIC CAPACITOR CD110-16V-220uF-M C711 464-6D747-M0 ELECTROLYTIC CAPACITOR CD110-16V-470uF-M C136 464-6D747-M0 ELECTROLYTIC CAPACITOR CD110-16V-470uF-M C103 464-6D747-M0 ELECTROLYTIC CAPACITOR CD110-16V-470uF-M C105 464-6E710-M0 ELECTROLYTIC CAPACITOR CD110-25V-100uF-M C104 364-91204-00 VGA SOCKET 105 PIN 3 ROW HORIZONTAL() 364-93220-00 AV JACK AV3-14WD X206 364-11212-00 EARPHONE JACK ST-112...
  • Page 33 353-28300-00 SMD ICAS2830AT-3.3 (D) 353-29800-10 SMD ICAM29LV800BT-90E1 455-22410-H0 SMD RESISTOR RC11-1/8W-100K-J R112 353-74140-10 SMD IC MC74HC14AD 353-76570-10 SMD ICBA7657F 353-76570-10 SMD ICBA7657F 364-T2001-00 SMD 20-PINSDF14-20P-1.25H X601 454-03622-MA SMD ELECTROLYTIC CAPACITOR CDPS-10V-22uF-M C106 454-03622-MA SMD ELECTROLYTIC CAPACITOR CDPS-10V-22uF-M C113 454-03622-MA SMD ELECTROLYTIC CAPACITOR CDPS-10V-22uF-M C108 454-03622-MA SMD ELECTROLYTIC CAPACITOR CDPS-10V-22uF-M...
  • Page 34 455-12110-H0 SMD RESISTOR FTR0603101JR R316 455-12110-H0 SMD RESISTOR FTR0603101JR R317 455-12110-H0 SMD RESISTOR FTR0603101JR R319* 455-12110-H0 SMD RESISTOR FTR0603101JR R104* 455-12110-H0 SMD RESISTOR FTR0603101JR R106 455-12110-H0 SMD RESISTOR FTR0603101JR R110 455-12110-H0 SMD RESISTOR FTR0603101JR R250 455-12110-H0 SMD RESISTOR FTR0603101JR R251 455-12110-H0 SMD RESISTOR FTR0603101JR R252...
  • Page 35 455-12310-H0 SMD RESISTOR FTR0603103JR R515 455-12310-H0 SMD RESISTOR FTR0603103JR R107 455-12310-H0 SMD RESISTOR FTR0603103JR R224 455-12310-H0 SMD RESISTOR FTR0603103JR R109 455-12312-H0 SMD RESISTOR FTR0603123JR R318 455-12330-H0 SMD RESISTOR FTR0603303JR R512 455-12347-H0 SMD RESISTOR FTR0603473JR R911* 455-12347-H0 SMD RESISTOR FTR0603473JR R113 455-12410-H0 SMD RESISTOR FTR0603104JR R912...
  • Page 36 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C506 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C312* 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C313* 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C315* 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C316* 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C625 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C626 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C627 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C628...
  • Page 37 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT C217* 456-2510R-C2 *SMD CAPACITOR 08052E105Z250BA C917 456-3018H-11 SMD CAPACITOR 0603CG180J500BA C301* 456-3018H-11 SMD CAPACITOR 0603CG180J500BA C302* 456-3022H-11 SMD CAPACITOR C1608CH1H220JT C201 456-3022H-11 SMD CAPACITOR C1608CH1H220JT C202 456-3033H-11 SMD CAPACITOR C1608CH1H330JT C909 456-3033H-11 SMD CAPACITOR C1608CH1H330JT C910 456-3033H-11 SMD CAPACITOR C1608CH1H330JT C911*...
  • Page 38 667-L17H2-09* IR RECEIVE ASS'Y (SMD ) 456-2410R-C2 SMD CAPACITOR C2012Y5V1E104ZT 454-03647-MB SMD ELECTROLYTIC CAPACITOR CDPS-10V-47uF-M 455-22110-H0 SMD RESISTOR RC11-1/8W-100-J 782-L17H2-0900 IR RECEIVE PCB 455-22210-H0 SMD RESISTOR RC11-1/8W-1K-J 667-L17H2-20 POWER PCB ASS'Y 808-70321-00 INSULATOR 343-00600-50 TRANSISTOR SPP11N60S5 V901 706-V2102-01 HEAT SINK 340-00373-00 DIODE MBR20100CT D907...
  • Page 39 TACT SWITCH KFC-A06-4X4.5X5B 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B 360-10001-00 TACT SWITCH KFC-A06-4X4.5X5B 782-L17H3-0500 BUTTON PCB 364-381BQ-00 8-PINS CONNECTORS 1.25T-1-8AW 851-13008-11 SCREW P(+) T3X8A-DZn 877-50448-0T0 KEY CAP (PLATE SILVERY WHITE ) 877-50449-00 SL17H20-11A11 SOFTWARE NA AUDIOVOX SAMSUNG 301-UL20H3-31RA RC-U31R-0AREMOTE CONTROL UNIT (AUDIOVOX)
  • Page 47 S.M-LC-17H2 (America) Ver.1.0...

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