Samsung LE20S81BX Service Manual Download

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10 Operating Instructions and Installation

10-5

10-4 Installing the Stand

1. Place the TV fdown on a soft cloth or cushion on a table.

2. Put the stand into the hole at the bottom of the TV.

3. Insert screw into the hole indicated and tighten.

▶

The stand is installed for models with the screen size of 40 inch and above.

10-5 Installing the Wall Mount Kit

Wall mount items (sold separately) allow you to mount the TV on the wall.

For detailed information on installing the wall mount, see the instructions provided with the Wall Mount

items. Contact a technician for assistance when installing the wall mounted bracket.

Samsung Electronics is not responsible for any damage to the product or injury to yourself or others if you

elect to install the TV on your own.

▶

Remove the stand and cover the bottom hole with a cap and fasten with two screws.

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Summary of Contents for LE20S81BX

Page 1: ...FT LCD TV Chassis GJA20SEU Model LE20S81BX Manual SERVICE TFT LCD TV Fashion Feature Luxurious Slim Design Supreme Picture Quality Supreme Sound Quality Supreme Convenience Quality Convenience for Users ...

Page 2: ...Electronics Co Ltd LE26S81BX LE32S81BX LE37S81BX LE40S81BX LE46S81BX Service Manual First edition June 2007 Printed in Korea Trademarks Samsung is the registered trademark of Samsung Electronics Co Ltd LE26S81BX LE32S81BX LE37S81BX LE40S81BX LE46S81BX and Macmaster Cable Adapter are trademarks of Samsung Electronics Co Ltd Macintosh and Power Macintosh are trademarks of Apple Computer Inc All othe...

Page 3: ...nstruction 3 1 3 2 How to Access Service Mode 3 2 3 3 Factory Data 3 3 3 4 Service Adjustment 3 12 3 5 Software Upgrade 3 15 4 4 Troubleshooting 4 4 1 4 1 First Checklist for Troubleshooting 4 1 4 2 Checkpoints by Error Mode 4 2 5 5 Exploded View and Parts List 5 5 1 5 1 LE26S81BX Exploded View 5 1 5 2 LE26S81BX Parts list 5 2 5 3 LE32S81BX Exploded View 5 3 5 4 LE32S81BX Parts list 5 4 5 5 LE37S8...

Page 4: ...ont 10 1 10 2 Connection Panel 10 2 10 3 Remote control 10 4 10 4 Installing the Stand 10 5 10 5 Installing the Wall Mount Kit 10 5 1 11 Disassembly and Reassembly 1 11 1 11 1 Disassembly 11 1 11 2 Reassembly 11 5 1 12 PCB Diagram 1 12 1 13 C Circuit Descriptions 1 13 1 13 1 Block description 13 1 13 2 Main Block 13 3 13 3 SMPS Board 13 4 1 14 Reference Infomation 1 14 1 14 1 Technical Terms 14 1 ...

Page 5: ...l can be punished under applicable International and or domestic law Area GSPN Global Service Partner Network North America Latin America CIS Europe China Asia Mideast Africa http service samsungportal com http latin samsungportal com http cis samsungportal com http europe samsungportal com http china samsungportal com http asia samsungportal com http mea samsungportal com Web Site ...

Page 6: ...hing is essential 4 Avoid overload Excessive signal from a sweep generator might overload the front end of the TV When inserting signal markers do not allow the marker generator to distort test result 5 Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate 6 Do not attempt to connect or disconnect any wire while the TV is turned on Make sure t...

Page 7: ...LC MWE Part SFR PART Sub Adjust Adjust Option Checksum Panel Information Bus Stop OFF Service 2006 01 02 T PLS23PEU 1002 OSD which the basic adjustment is added PC Auto Color Video Auto Color Reset DLC MWE Part SFR PART Sub Adjust Adjust Option Checksum Panel Information Bus Stop OFF 2005 06 23 MCU firmware date T PLUS25NUS 0906 MCU firmware version information this information must be appended du...

Page 8: ... 51 DLC MWE Part DCXO Sel 0 DCXO Tune 64 OVMADAPT 0 1 1 OVMTHR 0 3 2 IF Demod 0 63 38 F FI 0 1 0 R0 77 R1 71 R2 81 R3 18 R4 0 R5 1F SFR Part R Blk Lvl 0 63 28 G Blk Lvl 0 63 20 Peak Frq DLY 0 3 0 Peak 0 63 40 Soft Clp Lvl 0 3 0 W Limit 0 15 8 R White Pnt 0 63 37 G White Pnt 0 63 31 B White Pnt 0 63 31 AGC T O 0 63 23 Sub Adjust 6 Dynamic Luma Adjustment RF AV S_Video all store RF AV S_Video apart ...

Page 9: ...read Span for EMI test 10 Panel Information various function are included in information Monitor On Time Power On Time Panel Cycle Panel On off time Power off Mode change DPMS on off Panel Panel on Time when the panel is changed select the Reset Lower lamp Lower lamp on time when the Lower lamp is changed select the Reset Upper lamp Upper Lamp on time when the Upper Lamp is changed select the Rese...

Page 10: ...ments 3 5 3 4 1 EDID input method 3 4 Service Adjustment 3 4 2 EDID input method Windows Program SAMSUNG LCD TV support the DDC control JIG You can see the connection between PC and LCD TV 1 Execute WinDDC EXE 2 Click Open F5 ...

Page 11: ...ts and Adjustments 3 6 3 Select Connected Port 1 and Click Next OK 4 Select Connected Port 1 and Click Next OK Find file name VC20 5 Click Next OK button 6 Select enter button on Key Board After Monitor S N input ...

Page 12: ...3 Alignments and Adjustments 3 7 8 Check DDC OK 3 4 3 Micom TDA15001H Program Upgrade 1 Program Upgrade Jig 2 Connect the parallel Port ...

Page 13: ...onnect Jig to CN905 on PCB Ass y 4 Click WISP Icon on Computer 5 Check Automatic mode on 6 Click Browser button Select the Code Click Auto Execute button Check Erase and Write OK In General window and check Verify OK in ISP status window ...

Page 14: ...7 Block Diagrams 7 1 7 Block Diagram ...

Page 15: ...Memo 7 Block Diagrams 7 2 ...

Page 16: ...13 Circuit Descriptions 13 1 13 Circuit Descriptions 13 1 Overall Block Structure ...

Page 17: ...13 Circuit Descriptions 13 2 13 2 1 MAIN BOARD POWER TREE 13 2 Partial Block Description ...

Page 18: ...escriptions 13 3 13 2 2 WIRING DIAGRAM CN402 CN906 CN905 CN100 CN907 CN600 CN100 9P To IP Board CN402 50P To 20 Panel CN905 5P To Program Download Jig CN906 20P To Scart CN600 3P Speaker CN907 12P To Function Board ...

Page 19: ...13 Circuit Descriptions 13 4 ...

Page 20: ...s electrostatically sensitive devices Use caution when handling these components 11 1 Disassembly Cautions 1 Disconnect the monitor from the power source before disassembly 2 Follow these directions carefully never use metal instruments to pry apart the cabinet Description Picture Description 1 Place monitor face down on cushioned table Remove screws from the rear cover Remove screws from the stan...

Page 21: ...11 Disassembly and Reassembly 11 2 3 Remove Screws from the stand BRKT and lift up the stand BRKT Description Picture Description 2 Lift up the rear cover and remove the stand ...

Page 22: ...11 Disassembly and Reassembly 11 3 5 Remove screws from the boards and lift up the boards Description Picture Description 4 Disonnect cable from the boards ...

Page 23: ...11 Disassembly and Reassembly 11 4 7 Lift up the BRKT Description Description Picture 6 Remove screws ...

Page 24: ...11 Disassembly and Reassembly 11 5 Description Description Picture 11 2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures ...

Page 25: ...11 Disassembly and Reassembly 11 6 Memo ...

Page 26: ...BN63 03806B COVER REAR 22S81 EO HIPS HB BK500 Ready 1 S N A 3 T0071 BN64 00671C INLAY TERMINAL 19R81 EO PS SHEET T0 5 Re 1 S N A 3 T0064 BN65 00002A CLAMPER CORE BORDEAUX LDPE BLK 1 S N A 0 1 M0216 BN90 01375A ASSY STAND LE22S86BDX XEC 1 S N A 2 M0027 BN96 04745A ASSY STAND P BASE 22 23 26S81 ABS PM 1 S A 3 T0081 6002 001294 SCREW TAPPING BH M4 L16 ZPC BLK 4 S A 3 M0081 6003 001239 SCREW TAPTITE F...

Page 27: ...4 D3041 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D4014 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D4021 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D4024 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D4032 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S A 4 D4033 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200mA SO 1 S ...

Page 28: ...59 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4 Q409 0505 000110 FET SILICON 2N7002 N 60V 115mA 7 5ohm 0 1 S A 4...

Page 29: ...000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP...

Page 30: ...HIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 ...

Page 31: ...0W TP 1608 1 S A 4 R110 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 16...

Page 32: ...R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5...

Page 33: ...HIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100K...

Page 34: ...ohm 1 1 10W TP 1608 1 S A 4 R110 2007 001164 R CHIP 75ohm 1 1 10W TP 1608 1 S A 4 R110 2007 001164 R CHIP 75ohm 1 1 10W TP 1608 1 S A 4 R110 2007 001164 R CHIP 75ohm 1 1 10W TP 1608 1 S A 4 R110 2007 001164 R CHIP 75ohm 1 1 10W TP 1608 1 S A 4 R110 2007 001167 R CHIP 75ohm 5 1 10W TP 1608 1 S A 4 R110 2007 001167 R CHIP 75ohm 5 1 10W TP 1608 1 S A 4 R110 2007 001167 R CHIP 75ohm 5 1 10W TP 1608 1 ...

Page 35: ...1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CE...

Page 36: ...4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100nF 80 20 25V Y5V 1608 1 S A 4 C120 2203 000189 C CER CHIP 100n...

Page 37: ...5 50V C0G 1608 1 S A 4 C120 2203 000405 C CER CHIP 0 18nF 5 50V C0G 1608 1 S A 4 C120 2203 000405 C CER CHIP 0 18nF 5 50V C0G 1608 1 S A 4 C120 2203 000440 C CER CHIP 1nF 10 50V X7R 1608 1 S A 4 C120 2203 000440 C CER CHIP 1nF 10 50V X7R 1608 1 S A 4 C120 2203 000440 C CER CHIP 1nF 10 50V X7R 1608 1 S A 4 C120 2203 000440 C CER CHIP 1nF 10 50V X7R 1608 1 S A 4 C120 2203 000440 C CER CHIP 1nF 10 50...

Page 38: ...7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 1 S A 4 C120 2203 000975 C CE...

Page 39: ...05005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A...

Page 40: ...10000nF 10 10V X5R 2012 1 S A 4 C120 2203 006361 C CER CHIP 10000nF 10 10V X5R 2012 1 S A 4 C120 2203 006361 C CER CHIP 10000nF 10 10V X5R 2012 1 S A 4 C120 2203 006361 C CER CHIP 10000nF 10 10V X5R 2012 1 S A 4 C1003 2402 001081 C AL SMD 100uF 20 25V WT TP 8 3x8 3x10 1 S A 4 C1040 2402 001081 C AL SMD 100uF 20 25V WT TP 8 3x8 3x10 1 S A 4 C1046 2402 001081 C AL SMD 100uF 20 25V WT TP 8 3x8 3x10 1...

Page 41: ... 2704 000018 INDUCTOR SMD ARRAY 15uH 2000mA 2 0 124oh 1 S N A 4 X202 2801 000258 CRYSTAL SMD 0 032768MHz 20ppm SMD 12 5pF 1 S A 4 X202 2801 003667 CRYSTAL SMD 14 31818MHz 30ppm 28 AAN 16p 1 S A 4 F103 2901 001114 FILTER EMI SMD 25VDC 2 0ADC 100nF 3 2x 1 S A 4 T0568 3301 000314 BEAD SMD 120ohm 1 6x0 8x0 8mm 1 S N A 4 T0568 3301 000314 BEAD SMD 120ohm 1 6x0 8x0 8mm 1 S N A 4 T0568 3301 001145 BEAD S...

Page 42: ...0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2001 0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2002 0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2003 0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2004 0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2005 0501 000342 TR SMALL SIGNAL KSC1623 Y NPN 200mW SOT 1 S A 4 Q2006 0501...

Page 43: ... W900 L700 1 S N A 3 T0107 HA83 00058A LP RESIN EPS CHEIL SF 301V WHT 0 001 S N A 2 T0081 HA83 00057B LP TAPE CELLULOSE HA02 030010 T0 046 W7 1 66 S N A 0 1 M0019 BN92 02908A ASSY LABEL LE22S81BX 1 S N A 0 1 M0045 BN92 02909B ASSY ACCESSORY LE22S81BX XEH 1 S A 2 T0268 3903 000145 CBF POWER CORD DT EU FP3 YES U IEC C13 R 1 S A 2 T0081 6002 001294 SCREW TAPPING BH M4 L16 ZPC BLK 4 S A 2 T0074 BN59 0...

Page 44: ...ts List 5 1 5 Exploded View and Parts List You can search for updated part codes through ITSELF web site URL http itself sec samsung co kr 5 1 LE22S81BX Exploded View T0003 T0175 M0215 M0146 T0447 M0014 M0013 M0115 M0027 ...

Page 45: ...ohm 4pin 3W 350 750 1 S N A M0215 BN07 00346A LCD PANEL LTM220M1 L01 Doppler 8BIT 493 1 S A T0447 BN96 05967B ASSY BRACKET P PANEL 22S81 EO Ready 1 S N A M0146 BN61 03425A BRACKET PANEL SIDE JASMINE 22 SECC T1 2 4 S N A M0115 BN61 02931A BRACKET STAND LINK JASMINE 26 SECC T1 6 1 S A M0027 BN96 04745A ASSY STAND P BASE 23 26S81 ABS PMMA HB B 1 S A M0013 BN96 05966B ASSY COVER P REAR 22S81 EO HIPS H...

Page 46: ...on screen menu use the buttons as you use the and buttons on the remote control 4 C P Press to change channels In the on screen menu use the C P buttons as you use the and buttons on the remote control Without the Remote Control you can turn on the TV by using the Channel buttons 5 Speakers 6 Power Press to turn the TV on and off Power Indicator and turns off when the power is on and lights up in ...

Page 47: ... following sources An outdoor aerial A cable television network A satellite network 3 Connecting External A V Devices Connect RCA optional or S VIDEO cable optional to an appropriate external A V device such as VCR DVD or Camcorder Connect RCA audio cables optional to L AUDIO R on the rear of your set and the other ends to corresponding audio out connectors on the A V device Headphone may be conne...

Page 48: ... Connect the D Sub cable optional to PC PC IN on the rear of your set and the other end to the Video Card of your computer Connect the stereo audio cable optional to AUDIO PC IN on the rear of your set and the other end to Audio Out of the sound card on your computer 6 Kensington Lock The Kensington lock optional is a device used to physically fix the system when used in a public place If you want...

Page 49: ...menu 8 Sound effect selection 11 Previous channel 12 P Next channel P Previous channel 13 Available source selection 14 Use to see information on the current broadcast 15 Exit the on screen menu 16 Control the cursor in the menu 17 Automatic Power off 19 Picture effect selection 20 Sound mode selection Teletext Functions 3 Teletext hold 6 Exit from the teletext display 7 Teletext index 8 Teletext ...

Page 50: ...5 Installing the Wall Mount Kit Wall mount items sold separately allow you to mount the TV on the wall For detailed information on installing the wall mount see the instructions provided with the Wall Mount items Contact a technician for assistance when installing the wall mounted bracket Samsung Electronics is not responsible for any damage to the product or injury to yourself or others if you el...

Page 51: ...Memo 10 Operating Instructions and Installation 10 6 ...

Page 52: ...12 PCB Diagram 12 1 12 PCB Diagram 12 1 Main PCB Diagram I P Board SCALER TSU396AWJ SAW FILTER TDA15001H TUNER FUNCTION SPEAKER ...

Page 53: ...12 PCB Diagram 12 2 Memo ...

Page 54: ...heck Figure 1 1 WARNING Do not use an isolation transformer during this test Use a leakage current tester or a metering system that complies with American National Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL Publication UL1410 59 7 Figure 1 1 Leakage Current Test Circuit 1 1 4 Product Safety Notices Some electrical and mechanical parts have speci...

Page 55: ...ord from the AC source and turn the power switch ON Connect an insulation resistance meter 500 V to the blades of the AC plug The insulation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 6 Always connect a test instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the inst...

Page 56: ...it may cause a fire or electric shock 5 Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product Also check the antenna cable or the external connectors if they are fully unplugged Damage to the cord may cause fire or electric shock 6 Keep the antenna far away from any high voltage cables and install it firmly Contact with the high voltage cable or...

Page 57: ...Memo 1 Precautions 1 4 ...

Page 58: ...ble picture and sound settings that can be stored in the TV s memory Automatic channel tuning for up to 194 channels Air 69 STD 125 A special filter to reduce or eliminate reception problems Fine tuning control for the sharpest picture possible A built in multi channel sound decoder for stereo and bilingual listening Built in dual channel speakers Headphone jack for private listening ...

Page 59: ...ion 75Ω Antenna Input MAXInternalspeakerOut Right 3W Left 3W HeadphoneOut 10mWMAX OutputFrequency RF 80Hz 15kHz A V 80Hz 20kHz Sound Characteristic TV System EnvironmentalConsiderations Tuning System Sound Frequency Synthesize PAL SECEM MONO STEREO NICAM 8kg 17 64lbs Weight Set After installation Stand 573 8x70x467 8mm_AfterinstallationStand 573 8x70x427 9mm_Withoutstand OperatingTemperature 50 F ...

Page 60: ...lor 30 61 kHz 60 75 Hz 16 777 216 colors 28 33 kHz 60 75 Hz 16 194 277 colors PC Resolution Maximum mode Input Signal Sync Signal Video Signal Power Consumption Normal Power Saving 140W 184W 285W 1W 55W 3W H V Separate TTL P or N 0 7 Vp p 75ohm H V Separate TTL P or N 0 7 Vp p 75ohm WXGA 1360 x 768 60 Hz 640 x 480 60 Hz LE20S81BX ...

Page 61: ... 2 4 2 4 Option Specification Item Item Name Remote Control Batteries AAA x 2 Power Cord Cleaning Cloth Stand Cover Bottom BN59 00437A 3903 000042 BN63 01798A BN90 01377A Stand Screw x 4 6002 001294 BN63 03836A Code No Remark ...

Page 62: ... majority of monitors to ensure a clear image The Interlace method is the same as that used in TVs Plug Play This is a function that provides the best quality screen for the user by allowing the computer and the mon itor to exchange information automatically This monitor follows the international standard VESA DDC for the Plug Play function Resolution The number of horizontal and vertical dots use...

Page 63: ...t hotels schools and other buildings through their own broadcasting system apart from VHF or UHF broadcasting by terrestrial broadcasters The CATV pro grams may include movies entertainment and educational programs Different from cable TV CATV can be viewed only within the area in which the CATV service is offered S Video Short for Super Video S Video allows up to 800 lines of horizontal resolutio...

Page 64: ...ND Y C GND GND 14 2 2 S Video Pin Separate Red Green Blue GND GND DDC Return GND Red GND Green GND Blue No Connection GND Sync Self Test GND DDC Data H Sync V Sync DDC Clock 14 2 4 D SUB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 No PIN Sound R out Sound R In Sound L out GND GND Sound L In Cb ID GND NC Y NC GND GND Cr BL In GND GND Video Out Video In GND 14 2 1 Scart ...

Page 65: ... 13 328 0 050 0 466 12 795 0 017 78 750 Positive Positive Separate 31 469 31 777 3 813 1 589 26 058 0 318 70 087 14 268 0 064 0 858 13 155 0 191 28 322 Negative Positive Separate fH KHz A μsec B μsec C μsec D μsec E μsec fV Hz O msec P msec Q msec R msec S msec Clock Freq MHz Polarity H Sync V Sync Remark IBM 640 75 Hz 60Hz 72Hz 640 x 480 800 75 Hz 56Hz 60Hz 72Hz 800 x 600 1024 60Hz 1024 x 768 VGA...

Page 66: ...86 25 175 720 X 400 31 469 70 087 28 322 640 X 480 31 469 59 940 25 175 VESA 640 X 480 35 000 70 000 28 560 640 X 480 37 861 72 809 31 500 640 X 480 37 500 75 000 31 500 800 X 600 37 879 60 317 40 000 800 X 600 48 077 72 188 50 000 800 X 600 46 875 75 000 49 500 800 X 600 43 750 70 000 45 500 1024 X 768 48 363 60 004 65 000 1024 X 768 56 476 70 069 75 000 1024 X 768 56 672 72 000 78 434 1024 X 768...

Page 67: ...00057A EE DELL 1900 FP SEC LTM181E5 L01 BN07 00061A EF 18 narrow bezel GH18PS SEC LTM150XP L01 BN07 00065A EG AMLCD PVA PANEL SEC LTM240W1 L02 BN07 00062A EH Panel for 15 Wide TV SEC LTM170EU L01 BN07 00071A EJ Slim design TN SEC LTM170E5 L04 BN07 00072A EK E5 L04 6 bits FRC for IBM SEC LTA220W1 L01 BN07 00074A EL Panel for 22 TV SEC LTM170E6 L02 BN07 00075A EM AMLCD Narrow slim design 17 PVA mode...

Page 68: ...01 BN07 00158A E19 ZPD code derivation SEC LTM170EX L01 BN07 00159A E20 ZPD code derivation SEC LTM190E1 L03 BN07 00151B E21 Creat new panel code for AMLCD 19 Panel only for TCO03 SEC LTA460H1 L01 BN07 00157A E22 creat panel code for AMLCD 46 TV SEC LTM170EU L11 BN07 00160A E23 creat new panel code for AMLCD 17 Panel only for TCO03 SEC LTM240W1 L03 BN07 00134B E24 24 panel ZPD code derivation SEC ...

Page 69: ...CPT CLAA170EA02 BN07 00148B PC 17 CPT ZPD panel code derivation CPT CLAA150XG09 BN07 00141B PTZ CPT 15 panel ZPD code derivation GOYA PJT CPT CLAA150XP01 BN07 00173A PTH CPT 15 PSWG code derivation CPT CLAA150XP01 BN07 00173B PTZ CPT 15 PSWG panel ZPD code CPT CLAA170EA07 BN07 00174A PTH CPT 17 PSWG panel code derivation CPT CLAA170EA07 BN07 00174B PTZ CPT 17 PSWG type new Panel code CPT CLAA170EA...

Page 70: ...Q181E1DG11 A BN07 10001C PA SHARP LQ150X1LW71 BN07 00067A PB SHARP 15 PVA PANEL SHARP LQ370T3LZ41 BN07 00216A FAZ Rome2 HITACHI TX38D12VC0CAA A BN07 00003A HA HITACHI TX43DVCOCAB BN07 00060A HB 17 SXGA PVA MODE HITACHI TX43D15VC0CAB BN07 00101A HC ZPD Panel HITACHI TX51D11VC0CAB BN07 00122A HD 20 1 NARROW HITACHI TX54D11VC0CAB BN07 00123A HE 21 3 NARROW HITACHI TX80D12VC0CAB BN07 00169A HIZ Develo...

Page 71: ... Glare ZPD new code derivation CHIMEI M170E3 LO1 BN07 00050A CA TN PANEL CHIMEI M150X3 L01 BN07 00051A CB COMPATIBLE CHIMEI M170E4 L01 BN07 00052A CC MVA PANEL CHIMEI M150X2 L01 BN07 00066A CD CHIME 15 I PVA PANEL CHIMEI M150X3 L01 BN07 00079A CE Chimei ZPD panel CHIMEI M170E3 L01 BN07 00103A CF ZPD Panel code CHIMEI M170E4 L01 BN07 00104A CG ZPD Panel code CHIMEI V296W1 L01 BN07 00120A CH MVA CHI...

Page 72: ...9 Schematic Diagrams 9 1 9 Schematic Diagrams This Document can not be used without Samsung s authorization 9 1 Power_Function Schematic Diagram ...

Page 73: ...9 Schematic Diagrams 9 2 This Document can not be used without Samsung s authorization 9 2 Sound Processing Schematic Diagram ...

Page 74: ...9 Schematic Diagrams 9 3 This Document can not be used without Samsung s authorization 9 3 Input Output jack I Schematic Diagram ...

Page 75: ...9 Schematic Diagrams 9 4 This Document can not be used without Samsung s authorization 9 4 Input Output jack II Schematic Diagram ...

Page 76: ...9 Schematic Diagrams 9 5 This Document can not be used without Samsung s authorization 9 5 MST68980BL Schematic Diagram ...

Page 77: ...9 Schematic Diagrams 9 6 This Document can not be used without Samsung s authorization 9 6 DDR Tuner Schematic Diagram ...

Page 78: ... burnt or damaged cable Check to see if there is a disconnected cable connection or a connection is too loose Check to see if the cables are connected according to the connection diagram 2 Check the power input to the Video Board 3 Check the voltage in and out between the SMPS Video Board between the SMPS X Y Drive Board and between the Logic Boards ...

Page 79: ...heck IC101 and IC105 Yes Does proper B3 3V appear at Pin 2 of IC111 Check IC102 Yes Does proper DC B1 8V appear at Pin 4 of Q802 Q803 Check Q802 Q803 Yes Does proper DC B8V appear at IC109 Check IC109 1 2 3 4 5 No No No Check IC800 and IC400 Yes Does proper DC 5V_P appear at Pin 2 of IC108 Check IC108 Yes Does proper DC 9V_S appear at IC110 Check IC110 Yes Yes Does proper DC B5V appear at IC120 Ch...

Page 80: ...4 Troubleshooting 4 3 WAVEFORMS 1 2 5 3 6 4 4 7 8 ...

Page 81: ...4 Troubleshooting 4 4 4 2 2 No Picture TV Video S Video Component Check R882 TV Check C884 Video Check C851 C852 S Video Check the input signal Yes Check the IC800 IC500 WAVEFORMS 9 9 No ...

Page 82: ... IC800 VCTj Check the TU01 TV Tuner Check the CN913 Video S Video Check the CN909 Yes Does the signal appear at R858 R859 Check IC800 Yes Does the signal appear at Pin 2 5 of Pin 16 19 IC600 Check the IC600 Audio amp and related circuit of IC600 Yes Replace the speaker 4 2 3 No Sound No No No ...

Page 83: ...4 Troubleshooting 4 6 Memo ...

Page 84: ...Board CN402 50P To 20 Panel CN905 5P To Program Download Jig CN906 20P To Scart CN600 3P To Left Speaker CN601 2P To Right Speaker CN907 12P To Function Board CN402 CN905 CN906 Audio AMP TUNER TV Processor TDA15001H Scaler TSU396AWJ SAW Filter CN907 CN600 ...

Page 85: ...8 Wiring Diagrams 8 2 Memo ...

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Samsung LE20S81BX, Service Manual

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