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Table of Contents
Related Manuals for Hyundai HLT-1751
Summary of Contents for Hyundai HLT-1751
- Page 1 LCD TV HLT-1751 HLT-2051...
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Page 2: Safety Instructions
Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety instructions 1 Instructions 1.1 Be sure to switch off the power supply before replacing or welding any components or inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): 1.2.1 Do not touch here and there by hand at will;... -
Page 3: Instructions On Adjusting And Testing
2.9 As most of the circuitry in LCD TV set is composed of CMOS integrated circuits, it’s necessary to pay attention to anti statics. Before servicing LCD TV make sure to take anti static measure and ensure full grounding for all the parts that have to be grounded. 2.10 There are lots of connection wires between parts behind the LCD screen. - Page 4 Fig. 1 Check if N4, N20, N303, N302 has been FLASH written. Produce main board, TV board on line Adjust TV board Check main board Check TV board Combined test for general assembly Connect to central signal source, check if various TV functions (station skipping, modulate quantity control etc), check if the output of earphone and speaker are normal Input SCART/AV/S signal, check different...
- Page 5 About 4 minutes later, indication lamp of infra-red receiving board turns to yellow/blue (HLT-1751/HLT-2051), measure L102 PIN2 5.0 V,L107 PIN2 3.3 V, N10 PIN2 1.8 V, and N12 PIN2 1.8 V.
- Page 6 generator) a) Assembly complete set; b) Enter factory menu, realize “PW1306 reset”, adjust background brightness to be maximum; Quit factory menu, enter D_SUB channel, input “pane signal”(C_Hat_16x12(W)),to VGA terminal. Thus the discrimination rate should be the best discrimination rate for the LCD screen, see table 1, enter user menu, adjust brightness to 50, contrast to 50 adjust line center, field and center to make the picture location to be correct.
- Page 7 Input signal separately to TV/SCART/AV/S terminal, connect AUDIO/VIDEO OUT terminal to monitor, check the output sound of AUDIO OUT is normal, and output picture of VIDEO OUT is normal. (HLT-2051) 3.4 SCART connector 3.4.1 Inspection of connector content of SCART OUTPUT Input signal to different TV/SCART/AV/S/VGA terminals, connect SCART connector to TV as monitor.
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Page 8: Troubleshooting
640x480 @ 75 31.500 37.500 75.000 800x600 @ 75 49.500 46.875 75.000 1024x768 @ 75 78.750 60.023 75.029 1280x1024@60 63.981 60.2 1280x1024@75 79.976 75.025 640x480 @ 60 25.175 31.469 59.900 720x400 @ 70 28.322 31.469 70.086 800x600 @ 60 40.000 37.879 60.317 20”... - Page 9 2.TV set: Symptoms Possible cause Unable to switch the power on Check to see if the power plug has been inserted properly into the socket. No picture and sound Check to see if the power supply of liquid crystal TV has been switched on.
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Page 10: Method Of Software Upgrading
Blur picture Check if the antenna cable is correctly connected. Of if it has received the right video signal. No sound Check if the “mute” audio frequency setting is selected. Check if the sound volume is set to minimum. Make sure the earphone is not connected. Check if the cable connection is loose. - Page 11 The power supply is outer connection of 12V power supply adaptor HLT-1751/HLT-2051 multi-media LCD TV broadcast receiver consists of RF, video signal board assy”, digit picture processing assy’. RF signal produces picture IF signal and sound IF signal by tuner N201, through Video...
- Page 12 picture processing assy’. The sound SIF signal is sent to foot 67 of ICN402 MSP3410G for sound processing. The output signal from Pin28,Pin27 of N401MSP3410G is output to sound amplification N404TDA7268(20”TPATP1517). After amplification, it is sent speaker. Input signals to main board include RGB signals from RF, video signal assy’, VGA signal from personal computer.
- Page 14 IC BLOCK 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...
- Page 17 PW130...
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Page 21: Block Diagram
TDA4470 Block Diagram Ï Ï L’ switch Loop Offset Ï Ï filter comp. (optional) Ï Ï Ï Ï Ï Ï Ï Control FPLL phase shift Ï Ï Ï switch Ï Ï Ï Ï Ï VIF amp Ï Video Ï Ï Ï... - Page 22 HIGH HIGH VOLTAGE VOLTAGE S-video Audio...
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Page 23: Identification Criteria For The Bright Spot And Dark Spot Of The Lcd Screen
Serial No. of Parts 15" 17" 20" Sell area Europe Europe Europe America LCD panel Samsung Chimei 335-15012-00 335-17050-00 335-2000F-00 Back light board 667-L15H3-14 667-L17H3-14 667-L20H3-14A High frequency board 667-L15H3S-55 667-L15H3-55 667-L20H3S-55 Main board 667-L15H3-01S 667-L20H3-01S adapter 302-L1510-02 302-AD16A-02 302-AD16A-02 antetype 203-L15H30-02 Sell area... -
Page 24: Troubleshooting Guide
Troubleshooting guide No raster Does the logo appear on the screen Check whether the adapter Check whether X101 is when turning on the set ? supply 12V power to Digital Board. properly inserted. Good Check whether there is R.G.B Check U125965V. Check whether FUSE is melted. - Page 25 TV board troubleshooting No picture but have raster. Measure the waveform of R.G.B Hors, Vers at X7. Check whether N1 has Check whether X9 pin 1, pin 2 have 5V power supply. 5V power input. Measure N1 pin 33, pin 35 Replace N2 Replace N1 waveform.
- Page 26 HLT-1751...
- Page 27 HLT-2051-01...
- Page 28 HLT-2051-02...