LCD-Monitor Chassis : LS23WHU Model : PX2370 SERVICE Manual TFT-LCD Monitor Contens PX2370 Refer to the service manual in the GSPN (see the rear cover) for the more information. 1. Precautions 2. Product specifications 3. Disassembly and Reassemble 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram Contents 1. Precautions .............................................................................................................. 1-1 1-1. Safety Precautions ......................................................................................................... 1-1 1-2. Servicing Precautions ..................................................................................................... 1-2 1-3. Static Electricity Precautions .......................................................................................... 1-2 1-4. Installation Precautions .................................................................................................. 1-3 2. Product specifications ............................................................................................ 2-1 2-1. Feature & Specifications ................................................................................................. 2-1 2-2. Spec Comparison to the Old Models .............................................................................. 2-2 2-3. Accessories .................................................................................................................... 2-3 2-4. Accessories (Sold separately) ........................................................................................ 2-4 3. Disassembly and Assembly ................................................................................... 3-1 3-1. Disassembly ................................................................................................................... 3-1 4. Troubleshooting ...................................................................................................... 4-1 4-1. Troubleshooting .............................................................................................................. 4-1 4-2. When the power does Not Turn on ................................................................................. 4-2 4-3. When the screen is blank (Analog) ................................................................................. 4-4 4-4. When a blank screen is displayed (Digital) ..................................................................... 4-7 4-5. When a blank screen is displayed (HDMI) ................................................................... 4-10 4-6. Error Examples and Actions ......................................................................................... 4-13 4-7. Adjustment .................................................................................................................... 4-14 5. Exploded View & Part List ...................................................................................... 5-1 5-1. Exploded View ................................................................................................................ 5-1 5-2. Parts List ......................................................................................................................... 5-3 6. Wiring Diagram ........................................................................................................ 6-1 6-1. Wiring Diagram - Main Board ......................................................................................... 6-1 6-2. Board Connection ........................................................................................................... 6-2 6-3. Connector Functions ...................................................................................................... 6-3 6-4. Cables ............................................................................................................................ 6-3 GSPN (Global Service Partner Network) Area Web Site North America http://service.samsungportal.com Latin America http://latin.samsungportal.com CIS http://cis.samsungportal.com Europe http://europe.samsungportal.com China http://china.samsungportal.com Asia http://asia.samsungportal.com Mideast & Africa http://mea.samsungportal.com This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. © 2010 Samsung Electronics Co.,Ltd. All rights reserved. Printed in Korea P/N: BN82-00899A-00 3-1 3. Disassembly and Assembly 3. Disassembly and Assembly This section describes the disassembly and reassembly sequences for this monitor. Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them. 3-1. Disassembly Caution: 1. Turn the monitor off before beginning the disassembly process. 2. When disassembling the monitor, do not use any metal tools except for the provided jig. 3. Disassemble the monitor carefully as directed in the following procedures. Description Photo Screws 1. As shown in the picture, stand the monitor and pull out the upper corner of the Cover- Front. In the same manner, detach the other upper corner of the Cover-Front. 2. Detach the left and right sides of the Cover- Front in the same manner as step 1. 3-2 3. Disassembly and Assembly Description Photo Screws 3. Place the monitor face down on the table covered with a soft material and lift the Cover-Rear. 4. Remove the FFC cable, LED Driver wire, Tact Function wire and Touch Function wire, and detach the shield. 5. Remove the Filament tape and Tact Function. 6. Remove the PBA bracket and Function. 3-3 3. Disassembly and Assembly Description Photo Screws 7. Lift the drive board upward, and pull the upper and lower part in opposite directions until the board is detached. 3-4 3. Disassembly and Assembly Description Photo Screws 8. Remove the 2 (hex-cap) screws and 3 screws, and detach the main board. ※The assembly is in the reverse order of disassembly. 3-5 3. Disassembly and Assembly 3-1-1. Fixing the Function PCB 설명 그림 설명 나사 1. Fix the Function PCB into the panel as indicated by the red line in the picture using the Cover-Front guide. 3-6 3. Disassembly and Assembly Memo 5-1 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS23WHUKF/XF - Exploded View T0003 M0146 M0215 M0215 M0006 M0014 M0013 M0145 M0027 5-2 5. Exploded View & Part List 5-1-1. Parts List Location No. Code No. Description & Specification Q’ty SA/SNA Remark M0006 BN96-13409A ASSY SHIELD P-COVER;WHITE 23,SECC T0.8 1 SNA M0013 BN96-12828A ASSY COVER P-REAR;WHITE 23,PMMA+ABS,HB,B 1 SA M0014 BN94-03230K ASSY PCB MAIN-OTZ,W/W;LS23WTUKF5/EN 1 SA M0027 BN96-12829A ASSY STAND P-BASE;WHITE 23,PMMA 3H,GY016 1 SA M0145 BN96-12843B ASSY BOARD P-FUNCTION TACT;WHITE,Functio 1 SA M0146 BN96-12842B ASSY BOARD P-FUNCTION POWER;WHITE,Functi 1 SA M0215 BN07-00797A LCD-PANEL;M230WA01-ED,IN230A1,6Bit + Hi- 1 SA M0215 BN44-00337A INVERTER;White23"w(LED),GH355A,12V,8.5mA 1 SA T0003 BN96-12827A ASSY COVER P-FRONT;WHITE 23,PMMA,PMMA+AB 1 SA 5-3 5. Exploded View & Part List 5-2. LS23WHUKF/XF - Parts List Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark 0.1 BN90-02510A ASSY COVER FRONT;WHITE 23 1 SNA ..2 T0003 BN96-12827A ASSY COVER P-FRONT;WHITE 23,PMMA,PMMA+AB 1 SA ...3 CCM1 BN63-02183D COVER-SHEET;Rhcm,PE Vinyl,T0.04,680mm,20 1.25 SNA ...3 M0112 BN63-06402A COVER-FRONT;WHITE 23",PMMA,PMMA+ABS,HB,T 1 SNA ...3 T0527 BN68-00798D LABEL-ENERGY,STAR;L/M,W/W,PET,T0.05,9.3, 1 SNA ..2 BN68-02846A LABEL-MONITOR-POP;White POP,WW,PET,T0.05 1 SNA 0.1 M0002 BN90-02511A ASSY COVER REAR;WHITE 23 1 SNA ..2 M0013 BN96-12828A ASSY COVER P-REAR;WHITE 23,PMMA+ABS,HB,B 1 SA ...3 T0081 6001-000595 SCREW-MACHINE;PH,+,NO,M4,L20,ZPC(WHT ),SW 2 SNA ...3 M0081 6003-001001 SCREW-TAPTYPE;FH,+,B,M3,L8,ZPC(BLK),SW RC 3 SNA ...3 M0081 6003-001119 SCREW-TAPTYPE;FH,+,S,M4,L10,ZPC(BLK),S WR 3 SNA ...3 CCM1 BN63-02183D COVER-SHEET;Rhcm,PE Vinyl,T0.04,680mm,20 0.5 SNA ...3 M0006 BN63-06404A COVER-REAR;WHITE 23",PMMA+ABS,HB,BK23,H/ 1 SNA ...3 M0006 BN63-06405A COVER-REAR SUB;WHITE 23",PMMA+ABS,HB,BK2 1 SNA ...3 BN63-06406A COVER-STAND FRONT;WHITE 23",PMMA+ABS,HB, 1 SNA ...3 BN63-06407A COVER-STAND REAR;WHITE 23",PMAA+ABS,HB,B 1 SNA ...3 MASB1 BN96-12834A ASSY STAND P-BODY;WHITE 23,PC,ROSE BLACK 1 SA ....4 BN61-06035A STAND-BAR OUT;WHITE 23",PC,TP30,CLEAR 1 SNA .....5 BN61-06036A STAND-BAR IN;WHITE 23",PC,TP23,CLEAR 1 SNA .....5 BN61-06037A STAND-A;WHITE 23",PC,ROSE BLACK 1 SNA ......6 BN61-02932E BRACKET-STOPPER NUT;ECOFIT 20,M4,D8,L12, 1 SNA ....4 CCM1 BN63-02183B COVER-SHEET;Rhcm,PE Vinyl,T0.04,150mm,20 0.2 SNA ...3 BN61-06385A BRACKET GUIDE-STAND;HGI,T 1.6 1 SNA ...3 T0054 BN96-12831A ASSY HINGE P;WHITE 23",SM50C T2.4 1 SNA ...3 BN61-06538A BOSS-TAPE;WHITE,ACRYL,T0.64,W10mm,white, 0.4 SNA 0.1 BN91-04350Y ASSY LCD-OTZ;LS23EFUKF/XF 1 SNA ..2 M0215 BN07-00797A LCD-PANEL;M230WA01-ED,IN230A1,6Bit + Hi- 1 SA 0.1 M0017 BN91-04693C ASSY CHASSIS-OTZ,W/W;LS23WTUKF5/EN 1 SNA ..2 M0215 BN44-00337A INVERTER;White23"w(LED),GH355A,12V,8.5mA 1 SA ..2 M0014 BN94-03230K ASSY PCB MAIN-OTZ,W/W;LS23WTUKF5/EN 1 SA ...3 0202-001463 SOLDER-WIRE;LFC2-W3.0,-,D3,99.79Sn/0.2Cu 0.814 SNA ...3 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.003 SNA ...3 0204-002420 SOLVENT;1M-1000,C3H70H,96 6.46 SNA ...3 0204-002607 FLUX;DF-234U,13%,14KG,Gravity 0.82 4.201 SNA ...3 3701-001225 CONNECTOR- DVI;24P+5C,3R,FEMALE,STRAIGHT, 1 SA ...3 JA330 3722-002758 JACK-PHONE;1P,BLK,STRAIGHT 1 SA 5-4 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 3722-002922 JACK-DC POWER;3P,6.7mm,SnPb,Black 1 SNA ...3 BN97-00707A ASSY HDCP;BN46-00018A,BR20/21BS_ CS,MSTAR 1 SNA ....4 BN46-00018A KEY CODE-CERTIFICATE;(HDCP KEY) PPM42M5S, 1 SNA ...3 T0174 BN97-03934L ASSY SMD;LS23WTUKF5/EN,BN41-0* 1 SNA ....4 0202-001477 SOLDER-CREAM;LST309- M,D20~45um,96.5Sn/3A 0.711 SNA ....4 HD7 0401-000008 DIODE- SWITCHING;DAN217,80V,100MA,SOT-23, 2 SA ....4 DS01A 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200m A,SO 3 SA ....4 DR01A 0402-001614 DIODE-RECTIFIER;S1G,400V,1A,DO-214AC,TP 2 SA ....4 MZD1 0403-001411 DIODE-ZENER;5.49-5.73V,200mW,SOD-323,TP 10 SA ....4 0403-001712 DIODE-ZENER;QZX363C6V8,6.47/7.14V,200mW, 1 SNA ....4 D0254 0404-001020 DIODE-SCHOTTKY;BAT54C,30V,200mA,SOT- 23,T 3 SA ....4 T0139 0406-001271 DIODE-TVS;RCLAMP0524P,6/-/-V,150W,SLP251 4 SNA ....4 Q101 0501-000445 TR-SMALL SIGNAL;KTC3875S- Y,NPN,150mW,SOT 7 SA ....4 PQ02 0501-002080 TR-SMALL SIGNAL;2SC2412K,NPN,200mW,SC-59 7 SA ....4 Q409 0505-001165 FET-SILICON;Si3443CDV,P,-20V,+-4.4A,65mo 1 SA ....4 ND51C2 1001-001155 IC-ANALOG MULTIPLEX;NC7SB3157P6X,CMOS,SC 4 SA ....4 IC112 1103-000129 IC-EEPROM;24C02,2Kbit,256x8,SOP,8P,5x4mm 2 SA ....4 IC112 1103-001310 IC-EEPROM;24LC02B,256X8BIT,SOIC,8P,3.91X 1 SNA ....4 IC112 1103-001410 IC-EEPROM;S-24CS08AFJ-TB-1GE,8Kbit,1Kx8, 1 SA ....4 T0085 1201-002487 IC-AUDIO AMP;MAX9728A,QFN,12P,3x3mm,DUAL 1 SA ....4 1202-000104 IC-VOLTAGE COMP.;393,SOP,8P,150MIL,DUAL, 1 SA ....4 T0087 1203-006118 IC-POSI.FIXED REG.;S-1172B18-U5T1G,SOT-8 1 SA ....4 T0087 1203-006141 IC-POSI.FIXED REG.;S-1172B33-U5T1G,SOT-8 1 SA ....4 1205-003201 IC-BUS SWITCH;TC7WB125FK,SSOP,8P,2x2.3 mm 2 SA ....4 1405-001233 VARISTOR;30Vdc,5A,1.6x0.8x0.8mm,TP 2 SA ....4 MROP1 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 1 SA ....4 MR604 2007-000137 R-CHIP;2Kohm,5%,1/16W,TP,1005 3 SNA ....4 R105 2007-000138 R-CHIP;100ohm,5%,1/16W,TP,1005 22 SNA ....4 AR49 2007-000140 R-CHIP;1Kohm,5%,1/16W,TP,1005 5 SNA ....4 MR306 2007-000141 R-CHIP;2.2Kohm,5%,1/16W,TP,1005 3 SNA ....4 R319 2007-000143 R-CHIP;4.7Kohm,5%,1/16W,TP,1005 18 SNA ....4 R104 2007-000148 R-CHIP;10Kohm,5%,1/16W,TP,1005 26 SNA ....4 HDR9 2007-000152 R-CHIP;20Kohm,5%,1/16W,TP,1005 3 SNA ....4 MR13 2007-000157 R-CHIP;47Kohm,5%,1/16W,TP,1005 6 SNA ....4 DR39 2007-000162 R-CHIP;100Kohm,5%,1/16W,TP,1005 5 SNA ....4 HDR17 2007-000172 R-CHIP;10ohm,5%,1/16W,TP,1005 10 SNA ....4 R338 2007-000173 R-CHIP;22ohm,5%,1/16W,TP,1005 9 SNA ....4 OTR1 2007-001292 R-CHIP;33ohm,5%,1/16W,TP,1005 5 SNA ....4 AVR63 2007-001323 R-CHIP;3Kohm,5%,1/16W,TP,1005 3 SA ....4 PR24 2007-002970 R-CHIP;56ohm,5%,1/16W,TP,1005 2 SA ....4 2007-007319 R-CHIP;390ohm,1%,1/16W,TP,1005 2 SNA ....4 2007-007463 R-CHIP;1.1Kohm,1%,1/16W,TP,1005 1 SA ....4 MR11 2007-008015 R-CHIP;75ohm,1%,1/16W,TP,1005 3 SNA 5-5 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ....4 C258 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 2 SA ....4 C409 2203-000292 C-CER,CHIP;0.01nF,5%,50V,C0G,1608 2 SA ....4 C3 2203-000384 C-CER,CHIP;0.015nF,5%,50V,C0G,1608 1 SNA ....4 C254 2203-000438 C-CER,CHIP;1nF,10%,50V,X7R,TP,1005 2 SA ....4 ZC14 2203-000626 C-CER,CHIP;0.022nF,5%,50V,C0G,1608 1 SNA ....4 AD480 2203-002720 C-CER,CHIP;10nF,10%,25V,X7R,TP,1005 5 SNA ....4 DC108 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 3 SC ....4 PC8 2203-005642 C-CER,CHIP;0.22nF,5%,50V,NP0,1005 2 SNA ....4 AD480 2203-005968 C-CER,CHIP;4.7NF,10%,50V,X7R,TP,1005 6 SNA ....4 C102 2203-006158 C-CER,CHIP;100nF,10%,16V,X7R,1005 37 SNA ....4 AD480 2203-006336 C-CER,CHIP;10000nF,10%,25V,X5R,3216 12 SA ....4 C234 2203-006378 C-CER,CHIP;4700nF,10%,6.3V,X5R,TP,1608 1 SNA ....4 HDC11 2203-006562 C-CER,CHIP;1000nF,10%,10V,X5R,TP,1005 1 SNA ....4 AD480 2203-007270 C-CER,CHIP;10000nF,10%,10V,X5R,TP,1608 25 SNA ....4 T0052 2703-002801 INDUCTOR-SMD;3.9uH,20%,7070 1 SA ....4 X202 2801-003667 CRYSTAL-SMD;14.31818MHz,30ppm,28- AAN,16p 1 SA ....4 L2011 3301-001145 BEAD-SMD;60ohm,4516,TP,70ohm/45MHz,82o hm 6 SNA ....4 T0568 3301-001176 BEAD-SMD;80ohm,2012,TP,-,- 3 SNA ....4 T0568 3301-001407 BEAD-SMD;30ohm,1608,300mA,TP,,,0.4ohm 2 SNA ....4 3701-001367 CONNECTOR-HDMI;21P,2R,FEMALE,SMD,AU 1 SA ....4 AC510 3708-001150 CONNECTOR-FPC/FFC/PIC;30P,1mm,SMD- A,SN,Y 1 SA ....4 HB01A 3711-005499 HEADER-BOARD TO CABLE;BOX,8P,1R,1.25mm,S 1 SA ....4 HB01A 3711-005509 HEADER-BOARD TO CABLE;BOX,4P,1R,1.25mm,S 1 SA ....4 T0077 BN41-01341A PCB MAIN;WHITE,FR-4,2,MP1.0,1.6 (mm),80 1 SNA ....4 BN97-03927U ASSY MICOM-OTZ,W/W;M- WH23U0CAA-1004.0,20 1 SNA .....5 IC115 1107-001580 IC-FLASH MEMORY;MX25L4005,4Mbit,512Kx8,S 1 SNA ....4 0403-001180 DIODE-ZENER;BZX84C6V2,5.8- 6.6V,350mW,SOT 3 SA ....4 IC109 1205-003964 IC-LCD CONTROLLER;SE979LMRD- LF,PQFP,128P 1 SA ....4 AAC1 2203-005249 C-CER,CHIP;100nF,10%,50V,X7R,TP,1608 1 SNA ....4 PC11 2203-006141 C-CER,CHIP;1000nF,10%,16V,X5R,1608 6 SNA ....4 D0254 0404-001307 DIODE-SCHOTTKY;SSC54,20V,5000mA,DO- 214AB 1 SA ....4 T0170 1203-003059 IC-SWITCH VOL. REG.;MP1583,SOIC,8P,4.9x3 1 SA ....4 PR27 2007-000144 R-CHIP;5.1Kohm,5%,1/16W,TP,1005 1 SNA ....4 2007-007132 R-CHIP;15Kohm,1%,1/16W,TP,1005 3 SA ....4 2007-007136 R-CHIP;4.7Kohm,1%,1/16W,TP,1005 1 SNA ....4 AD480 2203-000585 C-CER,CHIP;0.22nF,10%,50V,X7R,1005 2 SA ....4 T0010 BN27-00009A COIL CHOKE;SMD 12x12x6,EOS,33uH,15%,0.12 1 SA ....4 Q409 0505-002560 FET-SILICON;AO6415,P,-20V,-3.3A,0.15ohm, 1 SA ....4 Q409 0505-002572 FET-SILICON;AO4801AL,P,-30V,-5.6A,0.075o 1 SA ...3 CN906 3711-007374 CONNECTOR- HEADER;BOX,12P,2R,2.5mm,ANGLE, 1 SA ...3 CN906 3707-001096 CONNECTOR-OPTICAL;STRAIGHT W/L,SPDIF 1 SA ..2 M0230 BN96-12447L ASSY CABLE P-FFC;White,FFC,1mm PITCH,154 1 SA ..2 M0006 BN96-13409A ASSY SHIELD P-COVER;WHITE 23,SECC T0.8 1 SNA ...3 T0073 AA63-00928A GASKET-EMI;PS37S4A,Conductive Fabric,1.0 4 SNA 5-6 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 T0514 BN61-06377A BRACKET-SUPPORT;WHITE 23",EGI-SECC,T0.8 1 SNA ...3 BN63-06403A SHIELD-MAIN;WHITE 23",SECC,T0.8 1 SNA ...3 T0073 BN63-04800A GASKET-EMI;T-MFM,Fabric Type,1.5mm,20mm, 1 SNA ..2 M0081 6003-000264 SCREW-TAPTYPE;PWH,+,- ,B,M3,L6,ZPC(WHT),S 3 SA 0.1 BN92-03163Q ASSY LABEL;LS22AQWJFV* W/W 1 SNA ..2 CCM1 BN68-01570A LABEL RATING;ALL,SS,PE,T0.05,90,45,Dark 1 SNA 0.1 BN92-05539A ASSY P/MATERIAL;WHITE 23 1 SNA ..2 T0214 0203-001595 TAPE-OPP MASKING;OPP-2,0.075,75,800M,CLR 1.54 SNA ..2 6902-000061 BAG AIR;LDPE,T0.2,W500,L1000,TRP,370.000 1 SNA ..2 6902-000379 BAG AIR;LDPE,T0.2,W1000,L1800,TRP,1260.0 1 SNA ..2 6902-000604 BAG WRAPPING;LDPE,T0.02,W500,L10000,TRP, 1.35 SNA ..2 6902-000609 BAG ROLL;LDPE,T0.05,W2400,L1000,TRP,30.0 0.03 SNA ..2 T0524 6902-001067 BAG PE;HDPE/NITRON,T0.015/T0.5,W700,L600 1 SNA ..2 AA69-00368R PAD-PLATE;OTHER,940,YEL,1260 1 SNA ..2 T0527 BH68-40364A LABEL-SUMMARY;G52,G72,ART,100G,WHT,BL K,W 1 SNA ..2 BH69-00457F PACKING INNER-PAD;ALL MODEL,EPE,SHEET,W1 1 SNA ..2 T0527 BN68-00129A LABEL SHIPPING-00;LABEL SHIPPING,ART-PAP 1 SNA ..2 BN69-00391Y PAD-ANGLE;CB,T5,W2100,L50,YEL,403g 1 SNA ..2 T0603 BN69-00617B PALLET;MUSE 17",WOOD,1240,970,120 1 SNA ..2 T0246 BN69-04357A CUSHION-SET;FX2390,EPS,16.7g/l 1 SNA 0.1 BN92-05720G ASSY BOX;LS23WHUKF/XF 1 SNA ..2 T0077 BH68-00329D LABEL BAR CODE-02;NO CE,NO WT`Y,MPRII,LA 1 SNA ..2 BH68-00659F LABEL BOX-00;ALL MODEL,MOJO 90G,90,95,WH 1 SNA ..2 BN68-02258B LABEL-STICK HIC;MPX2370,CHINA,MOJO,80G,5 1 SNA ..2 BN69-04604A BOX-03,SET;FX2390,CB,A-01,SW2, ECT40,YEL 1 SNA ..2 M0245 BN96-02895A ASSY MISC P-01,HANDLE PACKING;ALL MODEL, 1 SNA ...3 BN66-00007A LEVER-TOP;ALL MODEL,LDPE,WHITE,5.8g 1 SNA ...3 BN66-00008A LEVER-BOTTOM;ALL MODEL,LDPE,WHITE,4.01g 1 SNA 0.1 ACCE1 BN92-05739D ASSY ACCESSORY;LS23WHUKF/XF 1 SNA ..2 M0114 BN39-00310D CBF SIGNAL-DVI(A);DVI(A) cable,15P/10P,U 1 SA ..2 M0158 BN44-00139C ADAPTOR;AD-3612S,WHITE,110/230V,50/60HZ, 1 SA ..2 M0027 BN96-12829A ASSY STAND P-BASE;WHITE 23,PMMA 3H,GY016 1 SA ...3 M0081 6003-001001 SCREW-TAPTYPE;FH,+,B,M3,L8,ZPC(BLK),SW RC 4 SNA ...3 T0524 6902-000109 BAG PE;HDPE,T0.015,W350,L430,TRP,28,2,4. 1 SNA ...3 CIS4 BN61-01717A HOLDER-STAND;BIZET,NI PLT,CH,+,M4,L11(5) 1 SNA ...3 BN61-06038A BRACKET-STAND BOTTOM;WHITE 23",EGI- SECC, 1 SNA ...3 CCM1 BN63-02183K COVER-SHEET;Rhcm,PE Vinyl,T 0.04,250MM,2 0.3 SNA ...3 BN63-06408A COVER-STAND BASE;WHITE 23",PMMA,3H,GY016 1 SNA ...3 BN63-06409A COVER-STAND BOTTOM;WHITE 23",HIPS,HB,BK2 1 SNA ...3 BN68-02304C LABEL-STICKER;WW,T0.05,50,10,LAVERDER 19 1 SNA ...3 BN68-02532A MANUAL FLYER-STAND;PX2370,WW,Mojo 80g,21 1 SNA 5-7 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 AR011 BN73-00077A RUBBER FOOT;MATISSE,BUMPON,#13.5,T2.0 ,60 4 SNA ..2 ACCE1 BN96-13114R ASSY ACCESSORY;LS23WHUKFV/XF 1 SNA ...3 T0268 3903-000381 CBF-POWER CORD;DT,CHINA,LSG- 21,250/250V, 1 SA ...3 T0524 6902-000110 BAG PE;LDPE,T0.05,W250,L400,TRP,28,2,9.2 1 SNA ...3 T0527 AA68-00764A LABEL-PASSING;SAMSUNG ALL,ART PAPER,CLR, 1 SNA ...3 M9889 BN63-02368B CLOTH-CLEAN;cloth,120,160,sea blue,ToC 1 SA ...3 T0527 BN68-00513A LABEL-E,PASS;ALL MODEL,YUPO(110G),50X15, 1 SNA ...3 BN68-01789A MANUAL FLYER-WARRANTY CARD;Chinese,Art 1 1 SNA ...3 BN68-02186A MANUAL FLYER-TOC GUIDE;COMM,SAMSUNG,10 L 1 SNA ...3 BN68-02533B MANUAL USERS-IB;PX2370,SC,Mojo 80g,210,1 1 SNA 0.1 BN91-04711B ASSY SHIELD-OTZ ONLY;WHITE 23 1 SNA ..2 T0073 AA63-01200A GASKET-EMI;42S5,Conductive Fabric TAPE,0 1 SNA ..2 CIS1 BN74-00021A TAPE-FILAMENT;Filament tape,clear,#8915, 0.24 SNA ..2 M0146 BN96-12842B ASSY BOARD P-FUNCTION POWER;WHITE,Functi 1 SA ...3 M2893 BN39-01270A LEAD CONNECTOR;WHITE,UL 1061 #28,8P(1:1) 1 SA ...3 BN96-12842A ASSY BOARD P-FUNCTION POWER;WHITE,Functi 1 SNA ....4 BN94-03208Z ASSY PCB MISC-POWER- MAIN;BN96- 12842A,WH 1 SNA .....5 BN61-06030A GUIDE-LAMP;WIHTE 23",PMMA,GY0160,H/ GLOSS 1 SNA .....5 BN61-06044A GUIDE-POWER;WHITE,ABS,GR70 1 SNA .....5 BN64-01246A KNOB-DECORATION POWER;WHITE 23",PMMA+ABS 1 SNA .....5 BN64-01247A INLAY-PLATE;WHITE 23",PET SHEET,T1.88 1 SNA .....5 BN64-01248A KNOB-CONTROL MIRROR;WHITE 23',ABS,HB,WH1 1 SNA .....5 T0174 BN97-03934Y ASSY SMD;WHITE POWER,BN41-0* 1 SNA ......6 0403-001339 DIODE-ZENER;UDZS6.2B,6.06-6.33V,200mW,SO 1 SA ......6 0406-001253 DIODE-TVS;VESD05A1-02V,6.0/6.8/7.5V,SOD- 1 SNA ......6 L0405 0601-002331 LED;SMD,(SIDE VIEW ),WHT,2.04mm 2 SNA ......6 IS01A 1209-001890 IC-SENSOR;CT1N07B,MLF,24P,4x4mm,PLAST IC, 1 SA ......6 IS01A 1209-001934 IC-SENSOR;TSL27711FN,6P,2x2mm,3.6V,-30to 1 SA ......6 1405-001233 VARISTOR;30Vdc,5A,1.6x0.8x0.8mm,TP 2 SA ......6 R105 2007-000138 R-CHIP;100ohm,5%,1/16W,TP,1005 2 SNA ......6 HDR7 2007-000139 R-CHIP;220ohm,5%,1/16W,TP,1005 1 SNA ......6 DR39 2007-000162 R-CHIP;100Kohm,5%,1/16W,TP,1005 1 SNA ......6 R111 2007-000171 R-CHIP;0ohm,5%,1/16W,TP,1005 2 SNA ......6 VC37 2203-006048 C-CER,CHIP;100nF,10%,10V,X7R,TP,1005 1 SA ......6 C125 2203-006361 C-CER,CHIP;10000nF,10%,10V,X5R,TP,2012 1 SC ......6 AD480 2203-006399 C-CER,CHIP;1000nF,10%,6.3V,X5R,1005 2 SA ......6 HB01A 3711-005499 HEADER-BOARD TO CABLE;BOX,8P,1R,1.25mm,S 1 SA ......6 BN41-01354A PCB SUB-FUNCTION;White,FR-4,2layer,1.0,1 1 SNA ..2 M0145 BN96-12843B ASSY BOARD P-FUNCTION TACT;WHITE,Functio 1 SA ...3 M2893 BN39-01269A LEAD CONNECTOR;WHITE,UL 1061 #28,4P(1:1) 1 SA 5-8 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 BN96-12843A ASSY BOARD P-FUNCTION POWER;WHITE,Functi 1 SNA ....4 BN94-03450A ASSY PCB MISC-F/PCB, MAIN;BN96- 12843A,WH 1 SNA .....5 BN61-06033A GUIDE-CONTROL;WHITE 23",PMMA+ABS,BK23,H/ 1 SNA .....5 T0022 BN64-01249A KNOB-CONTROL;WHITE 23",PMMA+ABS,HB,BK23, 1 SNA .....5 T0174 BN97-03934Z ASSY SMD;WHITE F/PCB,BN41-0* 1 SNA ......6 1405-001233 VARISTOR;30Vdc,5A,1.6x0.8x0.8mm,TP 2 SA ......6 R329 2007-000081 R-CHIP;2.7Kohm,5%,1/10W,TP,1608 2 SNA ......6 AAR39 2007-000123 R-CHIP;1.5Kohm,5%,1/10W,TP,1608 2 SNA ......6 AC14 2203-000189 C-CER,CHIP;100nF,+80-20%,25V,Y5V,TP,1608 2 SNA ......6 T0313 3404-001379 SWITCH-TACT;12V,50mA,250gf,4.9x4.9x1.5mm 5 SA ......6 HB01A 3711-005509 HEADER-BOARD TO CABLE;BOX,4P,1R,1.25mm,S 1 SA ......6 BN41-01355A PCB SUB-FUNCTION;White,FR-1,2layer,1.0,1 1 SNA 1-1 1. Precautions 1. Precautions 1-1. Safety Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1-1. Warnings For continued safety, do not attempt to modify the circuit board. 1. Disconnect the AC power and DC power jack before servicing. 2. 1-1-2. Servicing the LCD Monitor When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. 1. It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of 2. this meter periodically. 1-1-3. Fire and Shock Hazard Before returning the monitor to the user, perform the following safety checks: Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the 1. chassis and other metal parts in the monitor. Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and 2. compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc. Leakage Current Hot Check (Figure 1-1): 3. 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). With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch 4. first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test. 1-1-4. Product Safety Notices Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by on schematics and parts lists. A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. DEVICE UNDER TEST (READING SHOULD) NOT BE ABOVE 0.5mA LEAKAGE CURRENT TESTER TEST ALL EXPOSED METAL SURFACES 2-WIRE CORD *ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED) EARTH GROUND Figure 1-1. Leakage Current Test Circuit 1-2 1. Precautions 1-2. Servicing Precautions WARNING: An electrolytic capacitor installed with the wrong polarity might explode. Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions. 1-2-1 General Servicing Precautions Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before 1. attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor. Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes 2. used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position. After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that 3. the area around the serviced part has not been damaged. Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, 4. input terminals and earphone jacks). Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. 5. Connect an insulation resistance meter (500 V) to theblades 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. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; 6. always remove the instrument’s ground lead last. 1-3. Static Electricity Precautions Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your 1. body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard, be sure to remove the wrist strap before applying power to the monitor. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent 2. accumulation of an electrostatic charge. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs. 3. Use only a grounded-tip soldering iron to solder or desolder ESDs. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate 5. electrical charges sufficient to damage ESDs. Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs 6. are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective 7. material to the chassis or circuit assembly into which the device will be installed. Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions. Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, 8. or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD. 1-3 1. Precautions 1-4. Installation Precautions For safety reasons, more than two people are required for carrying the product. 1. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. 2. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal 3. temperature may cause fire. Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed 4. to moisture. Otherwise, it may cause a fire or electric shock. Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check 5. the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the 6. antenna falling over may cause fire or electric shock. When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes. 7. A rise in temperature within the product may cause fire. 1-4 1. Precautions Memo 2-1 2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model PX2370 Feature Panel Specification : 250cd/m2 , 5ms (G to G 2ms), CR 1000:1 (DCR MEGA:1), 170/160 ሪ DPMS : <1W(Typical), <1.2W (Max) ሪ Off-Timer function for reducing standby power usages ሪ Windows Vista, Windows 7 authentication ሪ HDMI and Optical Sound Out are supported ሪ Magic ECO, Magic Angle and Magic Return are supported ሪ MagicLux: Screen brightness of the monitor automatically changes according to the ambient light intensity detected ሪ by the sensor Specifications Item Description Models Sync Master PX2370 LCD Panel TFT-LED panel, RGB vertical stripe, normally white transmissive, 23” Wide viewable 0.2652(H) X 0.2652(V) pixel pitch Scanning Frequency Horizontal : 30KHz ~ 81KHz Vertical : 56Hz ~ 61Hz Display Colors 16.7 Million colors Maximum resolution Horizontal: 1920 Pixels Vertical: 1080 Pixels (60Hz) Input Signal DVI-I with HDCP, HDMI Input Sync Signal Seperate H/V sync, Composite H/V, Sync-on-Green Level: TTL level Maximum Pixel Clock rate 164 MHz Active Display (Horizontal/Vertical) 509.184(H) x 286.416(V) AC power voltage & Frequency AC 110V~130V, 60Hz & AC, 200V~240V 50Hz Power Consumption Typical 25W/ Max 29W Dimensions Set (W x D x H) 557.5mm x 26.5mm x 337mm (Without Stand) 557.5mm x 230mm x 423mm (With Stand) Weight (Set/Package) Set : 4.1 Kg Package : 5.7 Kg Environmental Considerations Operating Temperature: 10˚C ~ 50˚C(50˚F ~ 122˚F) Operating Humidity : 10% ~ 90% Operating Temperature: -20˚C ~ 45˚C(-4˚F ~ 113˚F) Operating Humidity: 5% ~ 90% Note: Designs and specifications are subject to change without prior notice. 2-2 2. Product specifications 2-2. Spec Comparison to the Old Models Model WHITE (PX2370) ECOFIT (XL2370) Design Brightness 250cd/m2 250cd/m2 Contrast 1000:1 1000:1 DCR MEGA DCR MEGA DCR Response Time 5ms ( W to B) & 2ms (G to G) 5ms ( W to B) & 2ms (G to G) Input Analog/Digital/HDMI Analog/Digital/HDMI Color Effect Gray/Green/Aqua/Sepia Mode Gray/Green/Aqua/Sepia Mode Magic Tune Premium Premium Magic Bright 5 steps (Standard / Game / Cinema / Dynamic CR / Custom) 7 steps (Text / Internet / Game / Sports / Movie / Dynamic CR / Custom) MagicSeries MagicBright / MagicLux / MagicECO / MagicReturn / MagicAngle MagicBright Color Tone 4 steps Cool / Normal / Warm / Custom 4 steps Cool / Normal / Warm / Custom 2-3 2. Product specifications 2-3. Accessories Product Description Code. No Remark Quick Setup Guide BN68-00174P Samsung Electronics Service center Warranty Card (Not available in all locations) BN68-01146D User’s Guide, Monitor Driver, Natural Color software, MagicTune™ software BN59-00992A Stand Body BN96-12834A Stand Base BN96-12829A CBF SIGNAL-DVI(I) to D-sub 1,500mm(1.5M) BN39-00310D Power Cord 1000mm(1.0M) 3903-000384 Adaptor (12V/3A) BN44-00139C Cleaning Cloth 160mm x 120mm BN63-02368B 2-4 2. Product specifications 2-4. Accessories (Sold separately) Product Description Ccde. No Remark DVI Cable 1,500mm(1.5M) BN39-00246L Samsung Electronics Service center HDMI Cable MD39-00116A 4-1 4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. 1. - Resolution : 1920 X 1080 - H-Frequency : 67.500kHz - V-Frequency : 60.000Hz If the screen is blank, check whether the power cord is connected correctly. 2. The circuits to check: 3. • When the raster does not appear: Function PBA, Main PBA, Inverter, Adaptor • When 5V is generated but a blank screen is displayed : Main PBA • 14V is not Generated : Adaptor “Press the MENU button and hold down the, “ 4. (Enter, Source)” button for more than five (5) seconds to return the monitor to factory mode. 4-2 4. Troubleshooting 4-2. When the power does Not Turn on Symptom - When turning on the power button after connecting Adaptor, the LED at the front of the monitor does not operate. Major checkpoints - Check the Adaptor power fuse and the Adaptor output power. - Check the connections for Adaptor and the Main board inside the monitor. - Check the Main board power part and also check whether there is any abnormal output at any of the other output terminals Diagnostics IC602 IC601 IC604 CN601 Yes Check the connection status for the function ass’y. Yes Replace the Adaptor. No Is DC12V measured at pins2 of the CN601 connector when pins 1,3 are 0V? Is DC5V measured at C698 of the IC604 when pin2 is DC 12V? Check the circuits related to IC604. No Yes Check and replace the Adaptor. Check the circuits related to IC601. No Is DC3.3V measured at pin5 of the IC601 when pin4 is DC 5V? Yes Check the circuits related to IC602. No Is DC1.8V measured at pin5 of the IC602 when pin4 is DC 5V? Yes Caution Make sure to disconnect the power before working on the Adaptor. 4-3 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on 4 2 3 1 4-4 4. Troubleshooting 4-3. When the screen is blank (Analog) Symptom - Even though the LED power turns on, the screen is blank when connecting the DVI-I to D-sub cable. Major checkpoints - Check the DVI-I to D-sub cable connections. - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter. Diagnostics CN400 CN600 CN601 CN101 IC300 X300 Yes No Check the R119, R122 and R124 input terminals. No Check the circuits related to IC200. No Check the circuits related to CN400. Do output signals appear at pins 8 to 30 of CN400? No Is DC 5V measured at pins 1, 2 and 3 of CN400? Do the 3 Hsync and 4 Vsync waveforms appear at pins 66, 67 of IC300, respectively? 2 Do the RGB inputs appear at R119, R122 and R124 of CN101? 1 Is X300 oscillating correctly? Check and replace the panel. No Check and replace the circuits related to X300. Yes Yes Yes Check the +5V_PANEL signal and the BL_EN signal. Yes Check the signal cables and their connections. Yes Caution Make sure to disconnect the power before working on the IP board. 4-5 4. Troubleshooting 4-3-1. When a blank screen is displayed (Analog) 1 2 3,4 6 5 4-6 4. Troubleshooting 4-3-2. Waveforms when no screen is displayed (Analog) 1 4 3 4-7 4. Troubleshooting 4-4. When a blank screen is displayed (Digital) Symptom - Even though the LED power turns on, the screen is blank when connecting the DVI cable. Major checkpoints - Check the DVI cable connections. - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter. Diagnostics CN400 CN600 CN601 CN101 IC300 X300 Yes Check and replace the circuits related to X300. No 1 Is X300 oscillating correctly? 2 Do input signals appear at R101 and R108 of CN101? Check the R101 to 108 input terminals. No Yes Do output signals appear at pins 8 to 30 of CN400? Check the circuits related to CN400. No Yes Is DC 5V measured at pins 1, 2 and 3 of CN400? Check the +5V_PANEL signal and the BL_EN signal. No Yes Check the signal cables and their connections. Yes Check and replace the Panel. Caution Make sure to disconnect the power before working on the IP board. 4-8 4. Troubleshooting 4-4-1. Circuit diagrams when a blank screen is displayed (Digital) 1 2 4 3 4-9 4. Troubleshooting 4-4-2. Waveforms when a blank screen is displayed (Digital) 1 2 4-10 4. Troubleshooting 4-5. When a blank screen is displayed (HDMI) Symptom - Even though the LED power turns on, the screen is blank when connecting the HDMI cable. Major checkpoints - Check the HDMI cable connections. - Check whether the LVDS(FFC) cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the Inverter. Diagnostics CN400 CN600 CN601 CN102 IC300 X300 Yes Check and replace the circuits related to X300. No 1 Is X300 oscillating correctly? 2 Do input signals appear at R171 and R178 of CN102? Check the R171 to 178 input terminals. No Yes Do output signals appear at pins 8 to 30 of CN400? Check the circuits related to CN400. No Yes Is DC 5V measured at pins 1, 2 and 3 of CN400? Check the +5V_PANEL signal and the BL_EN signal. No Yes Check the signal cables and their connections. Yes Check and replace the Panel. Caution Make sure to disconnect the power before working on the IP board. 4-11 4. Troubleshooting 4-5-1. Circuit diagrams when a blank screen is displayed (HDMI) 1 2 4 3 4-12 4. Troubleshooting 4-5-2. Waveforms when a blank screen is displayed (HDMI) 1 2 4-13 4. Troubleshooting 4-6. Error Examples and Actions Error Appearance Symptoms and Actions Remarks Symptom: DVI signals are not recognized. Cause: This error occurs because the PC cannot recognize the mode information since the DVI DDC is not input to the monitor. Action: Input the DVI DDC. *On how to input DDC, refer to the training manual. Symptom: A full white screen is displayed regardless of the signals when turning on the monitor. Cause: This error occurs when only lamp power is supplied and the video signals are not input to the panel due to an LVDS cable connection error. Action: Replace the LVDS cable or connect the cable correctly so that the video signals can be supplied to the panel. * A Full White pattern is a feature of a TN panel when no video signals are supplied. Symptom: When connecting the DVD, noise occurs on the screen. Cause: The HDCP key is not inserted. Action: Enter the HDCP key. 4-14 4. Troubleshooting 4-7. Adjustment 4-7-1. Service Adjustment Conditions Precautions before a Service Adjustment 1. 1) Check whether the devices for the service adjustment are operating normally. 2) Secure a space that is sufficiently wide for disassembling the monitor. 3) Prepare a soft mat on which the monitor will be disassembled. Entering Service Mode 2. Entering: Menu Brightness 0 Contrast 0 Hold down the Enter button for five (5) seconds. Exiting: Power OFF Power ON Basic Service Items to Perform after Replacing a Board 3. 1) Check the PC color adjustment status. 2) Input DDC (input both of Analog and Digital). 3) Check whether the appropriate MCU code for the model is input. 4) Hard power the monitor off after entering service mode and performing a reset. DDC EDIT Data Input 4. 1) Use when updating the AD board code. 2) Download the WinDDC program, DDC Input program, and Hex and DDC files appropriate to the model through the Quality Control department of Samsung Electronics. Install the jig and input the data, as shown in the figure. Monitor needing adjustment Parallel Connector (25P Cable) Connect Monitor (Signal Cable) MTI-2031 DDC Manger 4-15 4. Troubleshooting 4-7-2. Service Function Specifications Checking the Code Version „ 1. Check the MCU code version and checksum after entering SVC Mode. 2. Entering SVC Mode - Adjust the Brightness and Contrast values to 0. - Hold down the Enter button for five (5) seconds. - The SVC Function OSD is displayed. - To exit the SVC Function, turn the power off. 3. Safe Mode - When the input signal is higher than the supported frequency of the product, safe mode gives users some time (one minute) to change the video card settings to the Recommended Mode settings. Panel information Micom version Micom checksum Select the Auto Auto option Select the PixelShift option. Country Scaler Vender The SVC Function OSD is made up of 103 (horizontal) x 82 (vertical) grids. The SVC Function OSD consists of panel information, software versions and MICOM checksum. Service Mode (Moving around) „ 1. Press the ▲ key to move to the upper item and the ▼ key to adjust values of each item. 4-16 4. Troubleshooting When replacing the panel „ After replacing the panel, select the Panel Ch. No. item and press the MENU key for five seconds. The Panel Ch. No. will then increment by one and the panel’s time information will be set to 0. At the same time, the panel cycle will be set to 0. Service Mode features „ Auto Auto : On / Off - PixelShift : On / Off - Country : English / Korean / Chinese / Japanese - HDCP HP-DVI : On / Off (Hotplug function On/ Off for DVI) - HDCP HP-HDMI : On / Off (Hotplug function On/ Off for DVI) - HotPlug Time : 5~50 (Default 9 : 0.9sec) - => This feature lowers the level of voltage to that of Hotplug Time during communication for recognizing the recognition pin inside the monitor for HDCP authentication between a player and the monitor. 4-17 4. Troubleshooting Inputting the DDC Data „ After exchange the Main Board, We use DDC manager and must complete downloading. - Connecting is refer to below picture. - MICOM can be updated with DDC manager. - Before You Begin! 1) Use a DDC Manager MTI-2050 version or later. 2) Select the DDC file name after running the program. Program : WinDDC BY SAMSUNG ELEC.Co. [Ver:4.65.12V] --- Modify : 20050425 DDC : SMPX2370A.ddc / SMPX2370D.ddc / SMPX2370H.ddc 3) Similarly to the previous dual model, insert the cable into DDC Manager Port 1 (analog), and enter and check DDC. Connect to parallel port DDC MANAGER Connect to MAIN board CN102 4-18 4. Troubleshooting Entering DDC 1. Connect the DVI-I to D-Sub cable (DVI cable) to the PX2370 and DDC Manager respectively. 2. Install the “Winddc.exc” program. 3. Click the “Winddc” icon. 4. Click the Open [F5] icon. 5. Select a port # and DDC file. e.g. For PX2370 Analog, select “SMPX2370A.ddc” 6. Another port #: “SMPX2370D.ddc” : Digital 7. The other port #: “SMPX2370H.ddc” : HDMI 8. Click the OK button. 4 5 6 8 9. Enter the serial number and press Enter. For a previous version of WinDDC, -> Analog Data, Digital Data and HDMI Data should be entered separately. Repeat steps 2 to 6. 9 4-19 4. Troubleshooting Inputting the MCU Data „ 1) Check the following options. - Manufacture : MSTAR - Device Type :TSUMxx - Communication Por t: DSUB15(Analog) - External Memory : PMC25LV040 1 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 4-20 4. Troubleshooting 3) Click the Auto Program button. 4) When programming and verification are complete, hard power the monitor off and then on again. 3 4-21 4. Troubleshooting Inputting the Code (HDCP) „ 1. Run the service.exe file. 2. Click the HDCP button. 4-22 4. Troubleshooting 3. Click the HDCP Write button and select MStar_HDCPKEY. 4. Inputting the HDCP key is completed. 6-1 6. Wiring Diagram 6. Wiring Diagram 6-1. Wiring Diagram - Main Board 6-2 6. Wiring Diagram 6-2. Board Connection - Main Board Function Connector CN202 LVDS CN400 Regulator X300 LED Driver CN600 Adaptor CN601 Audio Out CN700 Optical Out OP700 DVI – I Jack CN101 HDMI Jack CN102 Power Connector CN1201 Scaler IC300 Flash Memory IC200 Regulator 6-3 6. Wiring Diagram 6-3. Connector Functions Connector Functions CN101 DVI-I (Analog/ Digital) signal input terminal * Upon occurrence of a fault: No RGB Output error may occur. CN201 Connects to the power Function board. * Upon occurrence of a fault: Either a No LED screen error may occur or the light sensor may not function. CN400 Transfers LVDS signals from the main board to the panel. * Upon occurrence of a fault: Blank Screen and No Power errors may occur. CN600 Sends PWM outputs from the power board to the inverter. * Upon occurrence of a fault: Blank Screen error may occur. CN700 HDMI sound output terminal * Upon occurrence of a fault: An error may occur in I2S digital sound outputs inputted to the HDMI. CN102 HDMI signal input terminal * Upon occurrence of a fault: No Digital Output (No TMDS output) error may occur. CN601 Supplies 12V from the adapter to the main board. * Upon occurrence of a fault: No Power and Blank Screen errors may occur. 6-4. Cables Use LVDS 30p FFC cable Code BN96-12447L Photo 6-4 6. Wiring Diagram Memo