Samsung LW22N23N, Service Manual

Page 1: ... TFT LCD TV MONITOR CONTENTS 1 Precautions 2 Product Specifications 3 Disassembly Reassembly 4 Alignment Adjustments 5 Troubleshooting 6 Exploded View Parts List 7 Parts List 8 Block Diagram 9 Wiring Diagram 10 PCB Layout 11 Schematic Diagrams 12 Panel Description ...

Page 2: ...s 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 that th...

Page 3: ...mote control keys in this sequence If you do not have Factory remote control If you have Factory remote control 4 2 2 Factory Mode Tree The buttons are active in the service mode 1 Remote Control Key Power Arrow Up Arrow Down Arrow Left Arrow Right Menu Enter Number Key 0 9 2 Function Control Key Power CH CH VOL VOL Menu TV VIDEO Enter ...

Page 4: ...4 Alignments and Adjustments LW22N23N 4 3 ...

Page 5: ...4 Alignments and Adjustments 4 4 LW22N23N ...

Page 6: ...4 Alignments and Adjustments LW22N23N 4 5 ...

Page 7: ...4 Alignments and Adjustments 4 6 LW22N23N ...

Page 8: ...4 Alignments and Adjustments LW22N23N 4 7 ...

Page 9: ...4 Alignments and Adjustments 4 8 LW22N23N Unless otherwise specifid do not adjust data in Factory Mode Data may be changed for display improvement ...

Page 10: ...es different adjustments are requried for RF PC DVI modes 3 Optimum condition data for each mode are saved as default values Refer to Table 2 3 4 As the RF mode is applied with the same vlaues as for VIDEO and S VIDEO adjustment can be made in any of RF VIDEO and S VIDEO modes Table 4 1 White Balance Setting Conditions Table 4 2 Color Control Default Vlaue Table 4 3 Color Control Default Vlaue ...

Page 11: ...hod of Adjustment 1 Adjust the basic level of DTV and PC input signals a Set the input to the mode in which the adjustment will be made PC Input signal PC Mode Model 21 1024 768 Mode Pattern 16 Picture 4 1 b Enter factory Calibration confirm the ADC data PC Mode Only ADC default value Table 4 3 2 Adjust the white balance of RF DTV and PC Modes a Set the input to the mode in which the adjustment wi...

Page 12: ...nd blue offset y to the color coordinates Do not adjust green offset data d Adjust the high light Refer to table 1 2 in adjustment position by mode Adjust red gain x and blue gain y to the color coordinates Do not adjust the green gain and sub contrast Y data Picture 4 2 Toshiba ABL Pattern Picture 4 3 Toshiba ABL Pattern Low light Measurement point High light Measurement point ...

Page 13: ...djustments 4 12 LW22N23N 4 3 4 PW565 Below figures are for contrast adjustment of PW565 IC565 Do not change the data 4 3 3 Option Table The default settings are most recommended for Option Data Each data may be adjusted ...

Page 14: ...4 Alignments and Adjustments LW22N23N 4 13 4 3 5 VPC 3230 MAIN Data may be adjusted 4 3 6 ADC Adjust the R Pr G Y B Pb gain and offset to the basic level of DTV and PC Input signals ...

Page 15: ...128 Step 3 White 16 4 White 240 5 Color Bar 6 RGB Ramp 32 Step 4 3 10 Check sum XXXX Displays the current check sum size of the MICOM Varies depending on program update 4 3 11 Reset Initializes the data in the MICOM Set to default value Use Reset to restore adjustmints made in Factory Mode to the original settings 4 3 12 T_VIC22NUS_0166 11 27 2003 20 10 51 Displays the MICOM program version 4 3 7 ...

Page 16: ...e to execute Program Update Refer to the Picture 4 4 attachment 3 After completing the JIG Cable connection store Update practice program hex file 3EA in new folder guiR romcode factoryGui 4 Click FlashupgradNT exe icon 2 times and execute it Upgrader OSD screen is marked 5 Select OFull inf in Flash flaher romcode guir factorygui items look in Files To Picture 4 4 Picture 4 5 ...

Page 17: ...10 Program Update is completed 3 2 1 4 Attachment Picture 4 7 JIG Cable Connection Explain 1 Connect with PC Pattern Generator s output Connect only when you want to see PC screen 2 Connect with JIG Output 15 pins and PC Input PC DVI 24 pins terminal 3 Connect with COM Port1 of PC 9 Pins 4 Connect 14V 4 5A Adaptor Cable 6 Click the Flash that is under right of OSD screen if warning message comes o...

Page 18: ...8 Block Diagram This Document can not be used without Samsung s authorization LW22N23N 8 1 ...

Page 19: ...BLUE GND NC NC PC_5V IDENT_PC HSYNC_PC PC_GREEN GND PC_RED CN809 CN801 TUNER SC1 RED OUT SC1 RED IN SC1 LEFT OUT GND GND SC1 LEFT IN SC1 BLUE SC1 SWIT CHING GND N C SC1 GREEN SC2 RED OUT SC2 RED IN SC2 LEFT OUT GND GND SC2 LEFT IN N C SC2 SWIT CHING GND N C N C N C GND GND SC1 RED GND SC1 FAST BLANKING GND SC1 CVBS OUT SC1 CVBS IN GND N C GND GND SC2 CVBS OUT SC2 CVBS IN GND N C GND GND N C CN505 ...

Page 20: ... R624 MO 50V 0 056nF C766 100pF C729 TESTEN TP 73 35 VREF1 26 VREF2 VREFTOP 58 XTAL_IN 71 72 XTAL_OUT A1 8V 36 SC1_OUT_R 53 SC2_IN_L SC2_IN_R 54 34 SC2_OUT_L 33 SC2_OUT_R SC3_IN_L 50 51 SC3_IN_R 47 SC4_IN_L SC4_IN_R 48 80 STANDBYQ 70 NC_3 19 20 NC_4 22 NC_5 NC_6 23 29 NC_7 31 NC_8 32 NC_9 RESETQ 21 SC1_IN_L 56 57 SC1_IN_R 37 SC1_OUT_L 60 NC_1 1 41 NC_10 NC_11 42 NC_12 46 59 NC_13 63 NC_14 NC_15 64...

Page 21: ...11 Schematic Diagrams 11 6 LW22N23N 15 The Signal are Inputed to IC703 16 DC 8V 17 Output WaveForm ...

Page 22: ...866 A 1 B 2 C 3 D867 1 2 3 1K R855 RLZ8 2 D813 1 A B 2 C 3 100nF C841 RLZ8 2 D848 1 2 3 1 TP862 1 R196 100 TP844 A B 2 C 3 TP882 1 RLZ8 2 D811 1 R851 2 2nF C813 1 1K TP838 T823 1 R884 100 1 10K R186 10nF C831 TP817 1 1 2 3 TP826 10nF C824 D845 RLZ8 2 R165 RLZ8 2 1 2 3 V 1 16W 10K 1 A B 2 C 3 D837 A 1 B 2 C 3 RLZ8 2 D828 1 2 3 RLZ8 2 D863 D851 RLZ8 2 C804 100pF 22uF C849 D839 1 2 3 3 3UH L817 R9197...

Page 23: ...67 V 2 HDSYN C RED1IN 1 RED2IN 7 21 REDOUT 17 SYNCOUT VC C 20 12 VD1IN 13 VD2I N VDOUT 14 18 VIDEOIN 16 CT L G1IN 3 G2OUT 9 4 GND GND2 6 GND3 8 10 GND4 GOUT 19 24 HD1IN HD2IN 23 HDOUT 22 BA7657F IC204 5 BLUE1I N 11 BLUE2IN 15 BLUEOU T 47uF C235 1 16W R238 10K V R254 10 3 100 R231 2 3 MMBD4148SE D104 1 2 D103 1 10uF C264 1 5nF C223 R114 100 6 7 8 4 7pF C216 RA103 47 1 2 3 4 5 C127 1uF 22 1nF R204 1...

Page 24: ...DR3 127 SDRAM_ADDR4 126 SDRAM_ADDR5 124 SDRAM_ADDR6 122 SDRAM_ADDR7 121 SDRAM_ADDR 8 120 SDRAM_ADDR 9 119 114 SDRAM_BAN K SDRAM_CL K 136 SDRAM_DQ0 175 12 OUT_DENA B 8 OUT_DIVCLK 5 OUT_HSYN C 10 OUT_VSYN C 9 SCAN_ENABLE 7 SCAN_MODE 6 SDRAM_ADDR0 130 SDRAM_ADDR1 129 SDRAM_ADDR10 118 SDRAM_ADDR11 116 56 OUTD_R14 55 OUTD_R15 54 OUTD_R2 69 OUTD_R3 68 OUTD_R4 67 OUTD_R5 66 OUTD_R6 64 OUTD_R7 62 OUTD_R8 ...

Page 25: ...1 DS90C385MTD TXIN3 55 TXIN27 50 TXIN26 30 26 VCC2 9 VCC1 1 VCC TXOUT3 38 37 TXOUT3 42 TXOUT2 TXIN19 20 TXIN18 19 TXIN17 18 16 TXOUT0 48 47 TXOUT0 7 TXIN9 6 TXIN8 TXIN7 4 TXIN6 3 TXIN5 2 56 TXIN4 TXIN0 51 TXCLKOUT 40 39 TXCLKOUT TXIN25 28 27 TXIN24 TXIN23 25 24 TXIN22 TXIN21 23 TXIN20 22 TXIN2 54 36 LVDSGND1 43 49 LVDSGND 53 TXIN16 TXIN15 15 TXIN14 14 TXIN13 12 11 TXIN12 10 TXIN11 8 TXIN10 TXIN1 5...

Page 26: ...5 69 203 VSS25_15 205 VSS25_16 231 240 VSS25_17 VSS25_2 53 VSS25_3 55 VSS25_4 57 VSS25_5 60 71 VSS25_6 75 VSS25_7 87 VSS25_8 115 73 VDD33_5 122 VDD33_6 135 VDD33_7 VDD33_8 161 191 VDD33_9 VSS25_1 18 140 VSS25_10 157 VSS25_11 VSS25_12 185 VSS25_13 199 VSS25_14 76 VDD25_6 143 VDD25_7 VDD25_8 158 190 VDD25_9 VDD33_1 5 193 VDD33_10 VDD33_11 220 VDD33_12 255 VDD33_2 34 VDD33_3 61 VDD33_4 68 VCLK_OUT VD...

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