Samsung LEF22VS Service Manual Download Page 1

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LCD-Monitor

Chassis : LEF20VS

LEF22VS

Model

: P2070H

P2270H

SERVICE

Manual

TFT-LCD Monitor

Contens

P2070H / P2270H

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

Summary of Contents for LEF22VS

Page 1: ...ICE Manual TFT LCD Monitor Contens P2070H P2270H 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 ...

Page 2: ...embly 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 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 Exploded View P2070H 5 1 5 2 Parts List P2070H 5 3 5 3 Exploded View P2270H 5 6 5 4 Pa...

Page 3: ...urope 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 2009 Samsung Electronics Co Ltd All rights reserved Printed in Korea P N BN82 00797A 00 ...

Page 4: ...3 Disassemble the monitor carefully as directed in the following procedures 4 When assembling and disassembling the monitor the gasket attached to the PCB may be detached from the PCB Therefore make sure to check whether it is attached to the PCB correctly If it is detached from the PCB make sure to reattach it Description Photo Screws 1 Place a soft cloth on the floor and place the monitor on it ...

Page 5: ...ion Photo Screws 3 Separate the other side in the same way 4 Lift the REAR COVER up to separate it 5 Remove the FFC cable the LED driver wire the function wire and the two hex head screws and separate the DVI shield 6 Remove the PBA bracket ...

Page 6: ...3 3 3 Disassembly and Assembly Description Photo Screws 7 Separate the inverter and the main PBA from the PBA bracket P2070H P2270H The assembly is in the reverse order of disassembly ...

Page 7: ...3 4 3 Disassembly and Assembly Memo ...

Page 8: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LS22EFVKU XF Exploded View T0003 M0215 M0215 M0014 M0006 M0013 MASB1 M0027 M0020 ...

Page 9: ...K HB BK 1 SA M0014 BN94 03157A ASSY PCB MAIN LS22EFVKUU EN 1 SA M0020 BN96 10522B ASSY BOARD P Ecofit Function Assy With H 1 SA M0027 BN96 11315A ASSY STAND P BASE ECOFIT ROSE BLACK 1 SA M0215 BN07 00622A LCD PANEL M216H1 L01 CM21H11 6bit Hi FRC 1 SA M0215 BN44 00308B INVERTER Ecofit21 5 23 W GH329B 60khz 14 1 SA MASB1 BN96 09628C ASSY STAND P BODY ECOFIT PC ROSE BLACK 1 SA T0003 BN96 09622J ASSY ...

Page 10: ...02331 LED SMD SIDE VIEW WHT 2 04mm 6 SNA 7 FAR22 2007 000082 R CHIP 3 3Kohm 5 1 10W TP 1608 1 SNA 7 AD480 2203 006618 C CER CHIP 2200nF 80 20 16V Y5V TP 160 2 SNA 7 HB01A 3711 005743 HEADER BOARD TO CABLE BOX 5P 1R 1 25mm A 1 SA 7 BN41 01189A PCB FUNCTION Ecofit Function PCB FR 4 2 1 SNA 7 BN81 03258A A S MCS 5000 ECOFIT ECOFIT PROJECT 1209 1 SNA 4 M2893 BN39 01164A LEAD CONNECTOR ECOFIT UL1571 30...

Page 11: ... GRM188R71E473K 47nF 10 X7 2 SNA 5 BN81 04478A A S CAPACITOR GRM21BR61E475K 4 7uF 10 X 4 SNA 5 BN81 04479A A S RESISTOR MCR03EZPJ104 100K 1 10W 16 1 SNA 5 BN81 04480A A S IC BD9893F CCFL Controller 1 SNA 5 BN81 04481A A S FET APM4548AK 30V7 4A 30 6A SO 8 2 SNA 5 BN81 04482A A S ZENER DIODE UDZS12B Vz11 74 12 24V I 1 SNA 5 BN81 04483A A S ZENER DIODE UDZS16B Vz15 85 16 51V I 2 SNA 5 BN81 04484A A S...

Page 12: ...IFICATE HDCP KEY PPM42M5S 1 SNA 3 T0174 BN97 03837A ASSY SMD LS22EFVKUU EN 1 SNA 4 0202 001477 SOLDER CREAM LST309 M D20 45um 96 5Sn 3A 1 256 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 D0254 0402 000553 DIODE SCHOTTKY SS24 B240 40V 2000mA DO 2 1 SA 4 DR01A 0402 001614 DIODE RECTIFIER S1G 400V 1A DO 214AC T...

Page 13: ...R4 2007 000080 R CHIP 2Kohm 5 1 10W TP 1608 2 SNA 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 13 SA 4 MR19 2007 000087 R CHIP 6 8Kohm 5 1 10W TP 1608 1 SNA 4 MROP1 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 29 SA 4 KAR9 2007 000093 R CHIP 20Kohm 5 1 10W TP 1608 3 SNA 4 AR108 2007 000097 R CHIP 47Kohm 5 1 10W TP 1608 1 SA 4 ARR2 2007 0001...

Page 14: ...MD 30ohm 2012 TP 15 9OHM 30MHz 2 SA 4 T0568 3301 001407 BEAD SMD 30ohm 1608 300mA TP 0 4ohm 3 SNA 4 BD401 3301 001569 BEAD SMD 600ohm 2012 1000mA TP 520ohm 90 2 SNA 4 3601 001374 FUSE SURFACE MOUNT 32V 5A FAST ACTING Hi 1 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 005471 HEADER BOARD TO CABLE BOX 12P 1R ...

Page 15: ...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 2 T0527 BH68 00634A LABEL BOX 00 ALL MODEL MOJO 90G 80 75 WH 1 SNA 2 BH68 00658A LABEL BOX 00 ALL MODEL MOJO 90G 80 75 WH 1 SNA 0 1 M0045 BN92 05513E ASSY ACCESSORY LS22EFVKU XF 1 SNA 2 M0114 BN39 00310D CBF SIGNAL DVI A DVI A...

Page 16: ...S LABEL MB68 00113A 1 SNA 4 BN81 04147A A S INSULATOR MB75 40003A 2 SNA 4 BN81 04149A A S DC CABLE ASS扽 MB84 20055A 1 SNA 4 BN81 04150A A S TAPE PE MA02 00017A 0 2 SNA 4 BN81 04188A A S TRANS PULSE 2602 000011 1 SNA 4 BN97 03875H ASSY SMD ADAPTOR BN44 00129C ECOFIT 1 SNA 5 BN81 02988A A S DIODE SWG 0401 000002 1 SNA 5 BN81 03001A A S THERMISTOR CHIP 1404 000005 1 SNA 5 BN81 03007A A S RES CHIP 200...

Page 17: ...P BASE ECOFIT ROSE BLACK 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 CCM1 BN63 02183K COVER SHEET Rhcm PE Vinyl T 0 04 250MM 2 0 3 SNA 3 BN63 05908A COVER STAND BASE P2370 PMMA ABS HB ...

Page 18: ... 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...

Page 19: ...move 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 stat...

Page 20: ... 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 ...

Page 21: ...1 4 1 Precautions Memo ...

Page 22: ...ixel pitch 21 6 CMO Wide viewable 0 248mm H X 0 248mm V pixel pitch Scanning Frequency Horizontal 30KHz 81KHz Vertical 56Hz 75Hz Horizontal 30KHz 75KHz Vertical 56Hz 61Hz Display Colors 16 7 Million colors Maximum resolution Horizontal 1600 Pixels Vertical 900 Pixels 60Hz Horizontal 1920 Pixels Vertical 1080 Pixels 60Hz Input Signal DVI I with HDCP HDMI Input Sync Signal Seperate H V sync Composit...

Page 23: ... Sync Master P2270H Environmental Considerations Operating Temperature 10 C 40 C 50 F 104 F Operating Humidity 10 80 non condensing Operating Temperature 20 C 45 C 4 F 113 F Operating Humidity 5 95 non condensing Note Designs and specifications are subject to change without prior notice ...

Page 24: ...nternet Game Sports Movie Dynamic CR Custom Gamma 3 steps Mode1 Mode2 Mode3 3 steps Mode1 Mode2 Mode3 Color Tone 4 steps Cool Normal Warm Custom 4 steps Cool Normal Warm Custom Feature Magic Color Color Effect Image Size Magic Bright3 Magic Tune Premium Magic Color Color Effect Image Size Magic Bright3 Magic Tune Premium Color Effect Grey scale Images are displayed in a grey tone on the screen Gre...

Page 25: ...l locations P2070H BN68 02001A P2270H BN68 01925F User s Guide Monitor Driver Natural Color software MagicTune software BN59 00967A Stand Body BN96 09628C Stand Base BN96 11315A CBF SIGNAL DVI I to D sub 1 500mm 1 5M BN39 00310D Power Cord 1 830mm 1 8M 3903 000085 Adator P2070H 12V 3A P2270H 14V 4 5A P2070H BN44 00139A P2270H BP44 01005A Cleaning Cloth 160mm x 120mm BN63 02368B ...

Page 26: ...2 5 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 ...

Page 27: ...2 6 2 Product specifications Memo ...

Page 28: ...Hz 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 Adapter When 5V is generated but a blank screen is displayed Main PBA When 12V P2070H 14V P2270H is not Generated Adapter Press the MENU button and hold down the 4 Enter Source button for more than five 5 seconds...

Page 29: ...601 CN700 Yes Check the connection status for the function ass y Yes Replace the Adaptor No Is DC12V measured at pins2 of the CN700 connector when pins 1 3 are 0V Is DC5V measured at C222 when pin2 of IC202 is DC 12V Check the circuits related to IC202 No Yes Check the circuits related to IC605 No Is DC3 3V measured at pin3 of the IC605 when pin1 is DC 5V Yes Check and replace the Adaptor Check th...

Page 30: ...4 3 4 Troubleshooting 4 2 1 Circuit diagrams when the power does not turn on ...

Page 31: ...the R113 R117 and R120 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 Hsync and Vsync waveforms appear at pins 32 33 of IC200 respectively Do the RGB inputs appear at R113 R117 and R120 of CN102 Is X201 oscillating correctly Check and replace the p...

Page 32: ...4 5 4 Troubleshooting 4 3 1 When a blank screen is displayed Analog ...

Page 33: ...4 6 4 Troubleshooting 4 3 2 Waveforms when no screen is displayed Analog ...

Page 34: ...and replace the circuits related to X201 No Is X201 oscillating correctly Do the RGB inputs appear at R100 to R105 of CN102 Check the R100 to 105 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 Are IC101 inputs outputs and signals co...

Page 35: ...4 8 4 Troubleshooting 4 4 1 Circuit diagrams when a blank screen is displayed Digital ...

Page 36: ...4 9 4 Troubleshooting 4 4 2 Waveforms when a blank screen is displayed Digital 1 2 ...

Page 37: ...and replace the circuits related to X201 No Is X201 oscillating correctly Do the RGB inputs appear at R134 to R140 of CN703 Check the R134 to 140 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 Are IC101 inputs outputs and signals co...

Page 38: ...4 11 4 Troubleshooting 4 5 1 Circuit diagrams when a blank screen is displayed HDMI ...

Page 39: ...4 12 4 Troubleshooting 4 5 2 Waveforms when a blank screen is displayed HDMI 1 2 ...

Page 40: ...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...

Page 41: ... 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 He...

Page 42: ...put 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...

Page 43: ...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 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...

Page 44: ...dated with DDC manager Connect to parallel port DDC MANAGER Connect to MAIN board CN102 Connect DDC Manager Jig to P2070H P2270H with DVI I to D Sub cable and DVI cable Execute Winddc exe Program on PC Click the Winddc icon 1 Click the Open F5 icon 2 Select Port Open a DDC file Ex SMP2270HA ddc Analog 3 Select the other Port SMP2270HD ddc Digital 4 Click Next OK button 1 2 3 4 ...

Page 45: ...4 18 4 Troubleshooting 5 Enter the serial number and then press the Enter button If you using old version When inputting digital data after inputting analog data repeat steps 2 to 5 5 ...

Page 46: ...ing the MCU Data 1 Check the following options Manufacture MSTAR Device Type TSUMxx Communication Por t DSUB15 Analog External Memory PMC25LV020 1 2 Click the LoadFile button select an MCU code file and then click the Open O button ...

Page 47: ...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 ...

Page 48: ...4 21 4 Troubleshooting Inputting the Code HDCP 1 Run the service exe file 2 Click the HDCP button ...

Page 49: ...4 22 4 Troubleshooting 3 Click the HDCP Write button and select MStar_HDCPKEY 4 Inputting the HDCP key is completed ...

Page 50: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram Main Board ...

Page 51: ...gram 6 2 Wiring Diagram IP Board LVDS Connector Connect to Panel EEPROM EEPROM CN400 LVDS IC200 Scaler X201 Function LED Driver Inverter IC101 TMDS Switch CN604 CN703 CN102 CN700 Audio Out HDMI Jack DVI I Jack Adaptor ...

Page 52: ... may occur CN601 Sends PWM outputs from the power board to the inverter LED driver for XL2370 Upon occurrence of a fault Blank Screen error may occur CN604 HDMI sound output terminal Upon occurrence of a fault An error may occur in I2S digital sound outputs inputted to the HDMI CN703 HDMI signal input terminal Upon occurrence of a fault No Digital Output No TMDS output error may occur CN700 Suppli...

Page 53: ...6 4 6 Wiring Diagram Memo ...

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