LCD-Monitor Chassis : LCL23ZS Model : E2320 E2320X SERVICE Manual TFT-LCD Monitor Contens E2320 / E2320X 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. 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. Feature & Specifications ................................................................................................. 2-1 2-2. Spec Comparison to the Old Models .............................................................................. 2-4 2-3. Accessories .................................................................................................................... 2-6 3. Disassembly and Assembly 3-1. Disassembly ................................................................................................................... 3-1 4. Troubleshooting 4-1. Troubleshooting .............................................................................................................. 4-1 4-2. When the Power Does Not Turn On ............................................................................... 4-2 4-3. When the screen is blank ............................................................................................... 4-4 4-4. Error Examples and Actions ........................................................................................... 4-8 4-5. Adjustment ...................................................................................................................... 4-9 5. Exploded View & Part List 5-1. Exploded View ................................................................................................................ 5-1 5-2. Parts List ......................................................................................................................... 5-3 6. Wiring Diagram 6-1. Wiring Diagram - Main Board ......................................................................................... 6-1 6-2. Wiring Diagram - IP Board .............................................................................................. 6-4 6-3. Connector Functions ...................................................................................................... 6-5 6-4. Cables ............................................................................................................................ 6-5 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: BN82-00993A-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. Remove the stand body. 2. ① Turn the monitor over and insert your hands into the top of the monitor at the center and separate the front cover in the direction of the arrow as shown in the figure. ② Separate the sides of the front cover up to the directed line as shown in the figure. 3-2 3. Disassembly and Assembly Description Photo Screws 3. Turn the monitor over again . 3-3 3. Disassembly and Assembly Description Photo Screws 4. Turn the monitor over again to remove the back cover. 5. Remove the LVDS, LAMP wire and FUNCTION cable then remove the SHIELD-COVER. LAMP WIRE LVDS FUNCTION 6. Remove the LCD panel. 7. Remove the four (4) screws shown in the figure. 3-4 3. Disassembly and Assembly Description Photo Screws 8. Remove the four (4) screws shown in the figure and remove the Bracket support. 9. Remove the main PCB and IP boards from the SHIELD-cover. ※The assembly is in the reverse order of disassembly. 5-1 5. Exploded View & Part List 5. Exploded View & Part List 5-1. LS23CLZSB/XF - Exploded View (E2320) F001A M0215 M0014 M0107 R001A SB01A SB04A BN63-06317A M0174 5-2 5. Exploded View & Part List 5-1-1. LS23CLZSB/XF - Parts List Location No. Code No. Description & Specification Q’ty SA/SNA Remark F001A BN96-13088B ASSY COVER P-FRONT;E2320,ABS,HB,BK23,SIM 1 SA M0014 BN94-03397A ASSY PCB MAIN-STZ;E2320,STZ 1 SA M0107 BN63-06316B SHIELD-COVER;PLUM 23,SECC,T0.8,DUAL 1 SNA M0174 BN44-00323A IP BOARD;PWI2304PC(A),PLUM23,23.6,24"w,0 1 SA M0215 BN07-00609A LCD-PANEL;LTM230HT01,SSRZTS,6Bit + Hi-FR 1 SA R001A BN96-13099A ASSY COVER P-REAR;Cobalt E2320, E2320X,H 1 SA SB01A BN96-12853A ASSY STAND P-BODY;COBALT,HIPS,BK23,ETCH 1 SA SB04A BN96-12977A ASSY STAND P-BASE;COBALT ,19N,21.5~23,HI 1 SA BN63-06317A SHIELD-LAMP;PLUM 23'',SPTE,T0.3 1 SNA 5-3 5. Exploded View & Part List 5-2. LS23CLZSB/XF - Parts List (E2320) Service Bom (SA: SERVICE AVAILABLE, SNA: SERVICE NOT AVAILABLE) Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark 0.1 BN90-02722A ASSY COVER FRONT;E2320,BLACK 1 SNA ..2 F001A BN96-13088B ASSY COVER P-FRONT;E2320,ABS,HB,BK23,SIM 1 SA ...3 F001 BN63-06839B COVER-FRONT;E2320,ABS,HB,BK23,ETCH , SIM 1 SNA ...3 AL093 BN67-00281A LENS-LED;Cobalt Project,PC CLEAR,TP26 1 SNA ...3 M0007 BN64-01309A KNOB-FUNCTION;Cobalt Project,ABS,BK23 1 SNA ...3 FB01A BN96-13682D ASSY BOARD P-FUNCTION;Cobalt,FUNCTION,25 1 SA ....4 BN94-03497C ASSY PCB FUNCTION-BN96- 13682D;COBALT,BN9 1 SNA .....5 0202-001463 SOLDER-WIRE;LFC2-W3.0,-,D3,99.79Sn/0.2Cu 1.814 SNA .....5 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.003 SNA .....5 0204-002420 SOLVENT;1M-1000,C3H70H,96 3.47 SNA .....5 0204-002607 FLUX;DF-234U,13%,14KG,Gravity 0.82 2.259 SNA .....5 M2893 BN39-01298C LEAD CONNECTOR;COBALT,UL1061#28,UL/ CSA,5 1 SNA .....5 T0174 BN97-04306A ASSY SMD;COBALT, FUNCTION 1 SNA ......6 0202-001477 SOLDER-CREAM;LST309- M,D20~45um,96.5Sn/3A 0.462 SNA ......6 L0405 0601-001896 LED;SMD,BLUE,1.6x0.8x0.4mm,470,1.6x0.8x0 1 SA ......6 AHR40 2007-000088 R-CHIP;7.5Kohm,5%,1/10W,TP,1608 2 SNA ......6 KAR11 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 2 SNA ......6 T0313 3404-001379 SWITCH-TACT;12V,50mA,250gf,4.9x4.9x1.5mm 6 SA ......6 HB01A 3711-005743 HEADER-BOARD TO CABLE;BOX,5P,1R,1.25mm,A 1 SA ......6 BN41-01400B PCB SUB-FUNCTION;Cobalt(all),FR-4,2,1.1, 1 SNA ...3 BN68-02382B LABEL-TCO5.0,ENERGY- STAR;TCO5.0,ENERGY-S 1 SNA 0.1 R001A BN90-02723A ASSY COVER REAR;E2320,BLACK,texture 1 SNA ..2 R001A BN96-13099A ASSY COVER P-REAR;Cobalt E2320, E2320X,H 1 SA ...3 W391 6003-000275 SCREW-TAPTYPE;BH,+,B,M3,L10,ZPC(BLK),S WR 2 SA ...3 M0113 BN61-01581A BRACKET-VESA;BI17/19BS,SECC,T1.0 2 SNA ...3 T0060 BN61-05331A SPRING ETC;LAVENDER 23",SK5,T0.5 1 SNA ...3 CIS4 BN61-05332A HOLDER-STAND;LAVENDER 23",ACETAL,WHITE 1 SNA ...3 M0111 BN63-05625A COVER-STAND;LAVENDER 23W,BK23 1 SNA ...3 R001 BN63-06846A COVER-REAR;Cobalt E2320, E2320X,,HIPS,HB 1 SNA ...3 BN96-13761A ASSY SHIELD P-LAMP;Cobalt 23" 24",STPE,T 1 SNA ....4 BN63-06317A SHIELD-LAMP;PLUM 23'',SPTE,T0.3 1 SNA ....4 M0131 BP63-00786A GASKET;HLS6187WX/XAA,Conductive Adhesive 1 SNA 0.1 BN91-02922A ASSY LCD;LTM230HT01,Cream-MFM 23" 1 SNA ..2 M0215 BN07-00609A LCD-PANEL;LTM230HT01,SSRZTS,6Bit + Hi-FR 1 SA 0.1 M0017 BN91-05223K ASSY CHASSIS-STZ;E2320 1 SNA ..2 M0174 BN44-00323A IP BOARD;PWI2304PC(A),PLUM23,23.6,24"w,0 1 SA ..2 M0014 BN94-03397A ASSY PCB MAIN-STZ;E2320,STZ 1 SA ...3 0202-001463 SOLDER-WIRE;LFC2-W3.0,-,D3,99.79Sn/0.2Cu 1.558 SNA ...3 0202-001608 SOLDER-WIRE FLUX;LFC7-107,D0.8,99.3Sn/0. 0.003 SNA 5-4 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ...3 0204-002420 SOLVENT;1M-1000,C3H70H,96 3.47 SNA ...3 0204-002607 FLUX;DF-234U,13%,14KG,Gravity 0.82 2.259 SNA ...3 3701-001510 CONNECTOR-DSUB;15P,3R,FEMAIL,STAMPED PIN 1 SNA ...3 EC05 3701-001666 CONNECTOR- DVI;24P,3ROW,FEMALE,STARAIGHT, 1 SA ...3 CN906 3711-005847 CONNECTOR- HEADER;BOX,9P,1R,2MM,ANGLE,SN, 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 BN97-04137A ASSY SMD;E2320,STZ,BN94-03397A 1 SNA ....4 0202-001477 SOLDER-CREAM;LST309- M,D20~45um,96.5Sn/3A 0.795 SNA ....4 DS01A 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200m A,SO 11 SA ....4 DR01A 0402-001614 DIODE-RECTIFIER;S1G,400V,1A,DO-214AC,TP 1 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, 2 SNA ....4 Q101 0501-000445 TR-SMALL SIGNAL;KTC3875S- Y,NPN,150mW,SOT 1 SA ....4 PQ02 0501-002080 TR-SMALL SIGNAL;2SC2412K,NPN,200mW,SC-59 3 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 1 SA ....4 IC112 1103-000129 IC-EEPROM;24C02,2Kbit,256x8,SOP,8P,5x4mm 2 SA ....4 IC112 1103-001410 IC-EEPROM;S-24CS08AFJ-TB-1GE,8Kbit,1Kx8, 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 IC109 1205-003894 IC-LCD CONTROLLER;SE959LMH- LF,PQFP,128P, 1 SA ....4 DR1 2007-000043 R-CHIP;1Kohm,1%,1/10W,TP,1608 5 SA ....4 KAR21 2007-000070 R-CHIP;0ohm,5%,1/10W,TP,1608 1 SNA ....4 CER02 2007-000071 R-CHIP;22ohm,5%,1/10W,TP,1608 12 SNA ....4 AR30 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 19 SA ....4 AVR51 2007-000083 R-CHIP;3Kohm,5%,1/10W,TP,1608 2 SNA ....4 CER04 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 3 SA ....4 MROP1 2007-000090 R-CHIP;10Kohm,5%,1/10W,TP,1608 22 SA ....4 AR108 2007-000097 R-CHIP;47Kohm,5%,1/10W,TP,1608 7 SA ....4 ARR2 2007-000102 R-CHIP;100Kohm,5%,1/10W,TP,1608 2 SA ....4 MR112 2007-000309 R-CHIP;10ohm,5%,1/10W,TP,1608 2 SA ....4 HR13 2007-000821 R-CHIP;390ohm,1%,1/10W,TP,1608 2 SNA ....4 WR15B 2007-001044 R-CHIP;56ohm,5%,1/10W,TP,1608 2 SA ....4 ZR10 2007-001164 R-CHIP;75ohm,1%,1/10W,TP,1608 3 SNA ....4 R1 2007-002425 R-CHIP;1ohm,5%,1/10W,TP,1608 5 SNA ....4 2007-007720 R-CHIP;300Kohm,1%,1/10W,TP,1608 1 SA ....4 C258 2203-000236 C-CER,CHIP;0.1nF,5%,50V,C0G,1608 3 SA ....4 C134 2203-000257 C-CER,CHIP;10nF,10%,50V,X7R,TP,1608 1 SA ....4 ZC14 2203-000626 C-CER,CHIP;0.022nF,5%,50V,C0G,1608 3 SNA ....4 AAC14 2203-000888 C-CER,CHIP;4.7nF,10%,50V,X7R,TP,1608 6 SA ....4 DC108 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 47 SC ....4 PC11 2203-006141 C-CER,CHIP;1000nF,10%,16V,X5R,1608 3 SNA 5-5 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ....4 C125 2203-006361 C-CER,CHIP;10000nF,10%,10V,X5R,TP,2012 18 SC ....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 4 SNA ....4 T0568 3301-001407 BEAD-SMD;30ohm,1608,300mA,TP,,,0.4ohm 2 SNA ....4 AC510 3708-001150 CONNECTOR-FPC/FFC/PIC;30P,1mm,SMD- A,SN,Y 1 SA ....4 HB01A 3711-005743 HEADER-BOARD TO CABLE;BOX,5P,1R,1.25mm,A 1 SA ....4 KAR11 2007-000124 R-CHIP;2.2Kohm,5%,1/10W,TP,1608 1 SNA ....4 C3 2203-000384 C-CER,CHIP;0.015nF,5%,50V,C0G,1608 1 SNA ....4 BN97-03976J ASSY MICOM;B2340,STZ,BN94-03250J 1 SNA .....5 IC115 1107-001580 IC-FLASH MEMORY;MX25L4005,4Mbit,512Kx8,S 1 SNA ....4 BN41-01311C PCB MAIN;PLUM B2330,CEM-3,2,MP1.0,1.6,91 1 SNA ..2 M0214 BN96-02854Y ASSY CABLE P-FLAT;Mckinley,Flat cable,17 1 SA ..2 M0006 BN96-12459B ASSY SHIELD P-COVER;PLUM 23,SECC,T0.8,DU 1 SNA ...3 BN61-05973A STUD-PEM;PLUM23'',M4,D8,L20 2 SNA ...3 M0107 BN63-06316B SHIELD-COVER;PLUM 23,SECC,T0.8,DUAL 1 SNA ...3 M0131 BN63-00049A GASKET;RB17AS,Conductive Fabric,1.5MM,10 1 SNA ...3 M0114 BN61-02500A HOLDER-WIRE;NYLON6.6,NATURAL 1 SNA ..2 T0081 6001-002408 SCREW-MACHINE;BH,+,WT,M4,L12,ZPC(WHT ),SW 2 SA ..2 M0081 6003-000264 SCREW-TAPTYPE;PWH,+,- ,B,M3,L6,ZPC(WHT),S 2 SA 0.1 BN91-05280A ASSY SHIELD;E2320X 1 SNA ..2 CIS1 BN74-00021A TAPE-FILAMENT;Filament tape,clear,#8915, 0.3 SNA 0.1 BN92-05486D ASSY LABEL;Cobalt, BLACK 1 SNA ..2 CCM1 BN68-01570A LABEL RATING;ALL,SS,PE,T0.05,90,45,Dark 1 SNA 0.1 BN92-05547X ASSY P/MATERIAL;S23S1,LS23CLZSB/EN 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 T0524 6902-000520 BAG PE;HDPE/NITRON,T0.015/ T0.5(DOUBLE),W 1 SNA ..2 6902-000604 BAG WRAPPING;LDPE,T0.02,W500,L10000,TRP, 2.47 SNA ..2 6902-000609 BAG ROLL;LDPE,T0.05,W2400,L1000,TRP,30.0 0.02 SNA ..2 AA69-03810M PAD-PLATE;CB,SW,1240,800 1 SNA ..2 T0527 BH68-40364A LABEL-SUMMARY;G52,G72,ART,100G,WHT,BL K,W 1 SNA ..2 BH69-00457C PACKING INNER- 00,PAD;COMM,OTHER,T3.0,880 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 BN69-03507F PALLET-WOOD;F2380,WOOD- OTH,W1265,D835,H1 1 SNA ..2 BN69-04627A CUSHION-SET;COBALT23",SIMPLE,EPS,T0.018, 1 SNA 0.1 BN92-05761V ASSY BOX;LS23CLZSB/XF 1 SNA ..2 T0077 BH68-00329D LABEL BAR CODE-02;NO CE,NO WT`Y,MPRII,LA 1 SNA ..2 BN68-02258M LABEL-STICKER HIC;MODEL9,CHINA,MOJO,80G, 1 SNA ..2 BN69-04816A BOX-02,SET;Cobalt23"(SIMPLE),PAPER,SW,A1 1 SNA 5-6 5. Exploded View & Part List Level Location No. Code No. Description & Specification Q’ty SA/SNA Remark ..2 BH68-00659H LABEL BOX-00;ALL MODEL,MOJO 90G,90,95,WH 1 SNA 0.1 ACCE1 BN92-05913M ASSY ACCESSORY;LS22CLZSB/XF 1 SNA ..2 EC29 BN39-00244H CBF SIGNAL-D-SUB TO D-SUB;D-sub cable,15 1 SA ..2 SB01A BN96-12853A ASSY STAND P-BODY;COBALT,HIPS,BK23,ETCH 1 SA ...3 W392 6003-000282 SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SW 2 SA ...3 T0524 6902-000023 BAG PE;LDPE,T0.08,W150,L120,TRP,1.650g 1 SNA ...3 BN61-06067A STAND-BAR;COBALT 21.5,HIPS,BK23 1 SNA ....4 BN61-06068A STAND-BAR IN;COBALT,HIPS,BK23,IN 1 SNA ...3 BN61-06334A BRACKET-PLATE;COBALT,SECC,1.0,SIMPLE 1 SNA ...3 BN68-02822J LABEL-STICKER;W/W,ART PAPER,T0.05,50,10, 1 SNA ..2 SB04A BN96-12977A ASSY STAND P-BASE;COBALT ,19N,21.5~23,HI 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 BN61-05087A BRACKET-STAND BOTTOM;ECOFIT 23",SECC T0. 1 SNA ...3 BN63-06779A COVER-STAND BASE;COBALT 19N,21.5~24,HIPS 1 SNA ...3 AR011 BN73-00077A RUBBER FOOT;MATISSE,BUMPON,#13.5,T2.0 ,60 6 SNA ...3 BN68-02691A MANUAL FLYER-STAND;COBALT,Mojo 80g,148,2 1 SNA ...3 BN68-02822H LABEL-STICKER;W/W,ART PAPER,T0.05,50,10, 1 SNA ..2 ACCE1 BN96-13553D ASSY ACCESSORY;LS19CLNSB/XF 1 SA ...3 T0268 3903-000455 CBF-POWER CORD;DT,CN,IP3/Y(A),IEC320 C13 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 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 BN68-02528A MANUAL FLYER-CHINA MANUAL;Cobalt,SyncMas 1 SNA ...3 BN68-01118D MANUAL-TCO 5.0 CARD;COMM,W/W,Mojo 80g,21 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 E2320 / E2320X Feature Panel Specifications: 300 cd/m2, 5 ms, CR 1000:1, 170/160 (CR>10) ሪ DPMS : <0.3W ሪ Off-Timer function for reducing standby power usages ሪ Windows Vista/Win 7 authentication ሪ DVI with HDCP (wide model) ሪ Picture;a screen size desire ሪ Supported Magic Bright3/Maigc Eco/Magic Angle/Magic Return off timer/Image Size/Color Effect/Key Repeat Time ሪ Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normally white transmissive, 23” Wide viewable 0.2655(H)x0.2655(V)mm pixel pitch Scanning Frequency Horizontal : 30kHz ~ 81kHz (Automatic) Vertical: 56Hz ~ 75Hz Display Colors 16.7 Million colors Maximum resolution Horizontal: 1920 Pixels Vertical: 1080 Pixels Input Signal Analog / DVI digital with HDCP Input Sync Signal Seperate H/V sync, Composite H/V, Sync-on-Green Level: TTL level Maximum Pixel Clock rate 164Mhz Active Display (Horizontal/Vertical) 509.76(H) x 286.741(V) AC power voltage & Frequency AC 100V~130V, 60Hz & AC, 200V~240V 50Hz Power Consumption MAX 50W / Typical 45W Dimensions Set (W x D x H) 551 x 330.6 x 62 mm (Without Stand) 551 x 410.5 x 200 mm (With Stand) Weight (Set/Package) Set : 4.35kg (Without Stand) 4.75kg (With Stand) Environmental Considerations Operating Temperature: 10˚C ~ 40˚C(50˚F ~ 104˚F) Operating Humidity : 10% ~ 80% Operating Temperature: -20˚C ~ 45˚C(-4˚F ~ 113˚F) Operating Humidity: 5% ~ 95% 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 Cobalt (E2320 / E2320X) Mckinley 16:9 (2243SW) Design Resolution 1920x1080 1920x1080 Input Analog / DVI digital with HDCP Analog / DVI digital with HDCP Response Time 5ms(W to B) 5ms(W to B) Viewing Angle 170/160(CR>10) 170/160(CR>10) Brightness 300 cd/m² 300 cd/m² Contrast 70000:1(DCR) 15000:1(DCR) MagicBright 5 Step 7 Step Feature MagicBright3 MagicEco MagicAngle MagicReturnOff timer Image Size Color Effect Key Repeat Time Windows7 DVI with HDCP Customized key Magic Color Color Effect Image Size Magic Bright2 Magic Tune (Premium) *Color Effect - Grey scale: Images are displayed in a grey tone on the screen. - Green: Images are displayed in a green tone on the screen. - Aqua: Images are displayed in a blue tone on the screen. - Sepia: Images are displayed in a brown tone on the screen. Image Size : If the resolution is not wide resolution, this option allows the screen size to be selected as normal or wide. *Magic Angle - Lean Back Mode1: Select when viewing from a slightly lower angle. - Lean Back Mode2: Select when viewing from the bottom. - Standing Mode: Select when viewing from the top. - Side Mode: Select when viewing from the left or right. - Custom: When is selec ted, settings for is applied by default. User can set suitable picture quality as needed. *Magic Eco - 100%: the power consumption is 100% of Default Setting. - 75%: the power consumption is 75% of Default Setting. - 50%: the power consumption is 50% of Default Setting. 2-3 2. Product specifications 2-3. Accessories Product Description Code. No Remark Quick Setup Guide BN68-02508A Samsung Electronics Service center Warranty Card (Not available in all locations) BN68-00226R User’s Guide, Monitor Driver, Natural Color Pro Software BN59-00990A D-Sub(15 Pin) Cable BN39-00244G Power Cord 3903-000452 2-4. Accessories (Sold separately) Product Description Code. No Remark DVI Cable BN39-00246K Samsung Electronics Service center 2-4 2. Product specifications Memo 4-1 4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting Set custom mode as follows before beginning a repair. 1. • Resolution: 1920x1080 • H-frequency: 65kHz • V-frequency: 60 Hz 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: The Function PCB, Main PCB, I/P PBA • When 5V is generated but a blank screen is displayed: Main PCB • When 5V is not generated: I/P PBA “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 the power cable, the LED at the front of the monitor does not operate. Major checkpoints - When turning on the Power button after connecting the power cable, the LED at the front of the monitor does not operate. - Check the IP board power fuse and the IP board output power. - Check the connections for the IP board 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 CN600 IC601 IC602 Yes Check the connection status for the function assy. Yes Replace the IP board. No Is DC 5V measured at pins 5, 6 of the CN600 connector when pins 3, 4 are 0V? IIs DC 3.3V measured at pin 3 of IC601 when pin 1 is DC 5V? Check the circuits related to IC601. No Yes Check the circuits related to IC602. No Is DC 1.8V measured at pin 2 of IC602 when pin 3 is DC 5V? Yes Check and replace the IP board. Caution Make sure to disconnect the power before working on the IP board. 4-3 4. Troubleshooting 4-2-1. Circuit diagrams when the power does not turn on 4-4 4. Troubleshooting 4-3. When the screen is blank (Analog) Symptom - LEven though the LED power turns on, the screen is blank when connecting the VGA cable. Major checkpoints - Even though the LED power turns on, the screen is blank when connecting the VGA cable. - Check the D-sub cable connections. - Check whether the LVDS cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the IP board. Diagnostics IC400 CN400 X401 R206,R210,R213 Yes Check the signal cables and their connections. Yes No Check the R206, R210, and R213 input terminals. No Check the circuits related to IC400. 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 the CN400? Do the ③ Hsync and ④ Vsync waveforms appear at pins 32, 33 of IC400, respectively? ② Do the RGB inputs appear at R206, R210, and R213? ① Is X401 oscillating correctly? Check and replace the panel. No Check and replace the circuits related to X401. Yes Yes Yes Check the +5V_Panel signal and the BL_EN signal. 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) 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 - Even though the LED power turns on, the screen is blank when connecting the DVI cable. - Check the DVI cable connections. - Check whether the LVDS cable is connected correctly to the panel. - Check whether the lamp connector of the panel is connected correctly to the IP board. Diagnostics CN400 IC400 X401 R109, R110, R113 Yes Check the signal cables and their connections. Yes Check and replace the circuits related to X401. No ① Is X401 oscillating correctly? ② Do the inputs appear at R206, R210, and R213? Check the R206, R210, and R213 input terminals. No Yes Do output signals appear at pins 8 to 30 of CN400? Check the circuits related to CN400. No Yes Can DC 5V be measured at pins 1, 2, and 3 of CN400? Check the Panel EN signal and the BL_EN signal. No 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) 4-9 4. Troubleshooting 4-4-2. Waveforms when a blank screen is displayed (Digital) ① ② 4-10 4. Troubleshooting 4-5. 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. 4-11 4. Troubleshooting 4-6. Adjustment 4-6-1. 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 4-12 4. Troubleshooting 4-6-2. 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. Service Mode (Moving around) „ 1. Press the + button to move to other items. Panel information Micom version Micom checksum Select the Auto option Select the PixelShift option. Country Select HotPlug Select MagicReturn Time when MagicReturn is on Scaler Vender 4-13 4. Troubleshooting 2. Press the - button to change the setting to On or Off. When replacing the panel „ After replacing the panel, move to the Panel item and hold down the Menu button for five (5) seconds. The Ch. No is incremented by 1 and then both the On Time and Cycle are set to 0. This number is incremented by 1. 4-14 4. Troubleshooting Inputting the DDC Data „ Use the DDC Manager MTI-2050 version or later. 1) Click the Open [F5] icon. 2) Select a port. 3) Open a DDC file. 4) Select a date and click the OK [Save] button. 5) Click the Next [OK] button. 6) Enter the serial number and then press the Enter button When inputting digital data after inputting analog data, repeat steps 2 to 5. ※ 1 2 3 4 5 6 4-15 4. Troubleshooting Inputting the MCU Data „ 1) Check the following options. - Manufacture: MSTAR - Device Type:TSUM16_ROM128K_ext_flash - Communication Port: DSUB15 (Analog) - External Memory: PMC25LV010E 2) Click the LoadFile button, select an MCU code file, and then click the Open [O] button. 1 2 4-16 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 4-17 4. Troubleshooting Inputting the Code (HDCP) „ 1. Run the service.exe file. 2. Click the HDCP button. 4-18 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. Wiring Diagram - IP Board 6-3 6. Wiring Diagram 6-3. Connector Functions Connector Functions CN101  CN600 Supplies 5V from the power board to the main board and transmits the PWM output from the power board to the inverter. *When a problem occurs: The No Power and Blank Screen errors may occur. CN1 ~ CN4 In Transmits the lamp current (6mA ~ 7mA) generated in the inverter to the lamp of the panel. * When a problem occurs: The Blank Screen error may occur. CN102 Transmits the input power of 90 to 263V to the power board. * When a problem occurs: The No Power error may occur. CN101 Connects the function board. * When a problem occurs: The No LED screen and Function failure errors may occur. CN102 VGA signal input terminal * When a problem occurs: The No RGB output error may occur. CN400 Transmits the LVDS signals from the main board to the panel. * When a problem occurs: The Blank screen and No Power errors may occur. 6-4. Cables Use LVDS 30P FFC cable Code BN96-02854Y Photo 6-4 6. Wiring Diagram Memo