Samsung LS23EFV Service Manual Download Page 44 | Manualshive

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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.

All manuals and user guides at all-guides.com

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Summary of Contents for LS23EFV

Page 1: ...P2370H P2470H 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 All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 2: ...ting 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 P2370H 5 1 5 2 Parts List P2370H 5 3 5 3 Exploded View P2470H 5 6 5 4 Parts List P2470H...

Page 3: ... 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 00764A 00 All manuals and user guides at all guid...

Page 4: ...or 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 so that the front of th...

Page 5: ...rate 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 All manuals and user guides at all guides com ...

Page 6: ...nd Assembly Description Photo Screws 7 Separate the inverter and the main PBA from the PBA bracket The assembly is in the reverse order of disassembly All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 7: ...3 4 3 Disassembly and Assembly Memo All manuals and user guides at all guides com ...

Page 8: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LS23EFVKU XF Exploded View P2370H T0003 M0215 M0215 M0014 M0006 M0013 STD M0027 M0020 All manuals and user guides at all guides com ...

Page 9: ...4 03171L ASSY PCB MAIN STZ W W LS23EFV W W 1 SA M0020 BN96 10522C ASSY BOARD P Ecofit LED CT5000 6590C SEC 1 SA M0027 BN96 11315A ASSY STAND P BASE ECOFIT ROSE BLACK 1 SA M0215 BN07 00609A LCD PANEL LTM230HT01 SSRZTS 6Bit Hi FR 1 SA M0215 BN44 00308B INVERTER Ecofit21 5 23 W GH329B 60khz 14 1 SA STD BN96 09628C ASSY STAND P BODY ECOFIT PC ROSE BLACK 1 SA T0003 BN96 09624L ASSY COVER P FRONT LS23EF...

Page 10: ... FACE TAPE Poly 1 SNA 6 T0174 BN97 03017N ASSY SMD ECOFIT F PCB SMD 1 SNA 7 L0405 0601 002331 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 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 EC...

Page 11: ... 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 ZENER DIODE UDZS9 1B Vz8 85V Vz9 23V 2 SNA 5 BN81 04486A A ...

Page 12: ... 0 D3 99 79Sn 0 2Cu 15 985 SNA 3 0202 001608 SOLDER WIRE FLUX LFC7 107 D0 8 99 3Sn 0 0 025 SNA 3 0204 002420 SOLVENT 1M 1000 C3H70H 96 8 17 SNA 3 0204 002607 FLUX DF 234U 13 14KG Gravity 0 82 5 317 SNA 3 3701 001606 CONNECTOR DVI 29P 3ROW FEMALE STARAIGHT 1 SNA 3 JA330 3722 001061 JACK PHONE 1P 3 6PI AG BLK N 1 SA 3 3722 002922 JACK DC POWER 3P 6 7mm SnPb Black 1 SNA 3 BN97 00707A ASSY HDCP BN46 0...

Page 13: ...7 000067 R CHIP 15Kohm 1 1 10W TP 1608 1 SNA 4 KAR21 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 10 SNA 4 CER02 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 13 SNA 4 R863 2007 000073 R CHIP 91ohm 5 1 10W TP 1608 2 SNA 4 AR30 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 18 SA 4 RR2 2007 000075 R CHIP 220ohm 5 1 10W TP 1608 2 SA 4 AR150 2007 000078 R CHIP 1Kohm 5 1 10W TP 1608 5 SA 4 R331 2007 000079 R CHIP 1 ...

Page 14: ... 001778 INDUCTOR SMD 3 3uH 20 3225 1 SA 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 T0121 3301 000316 CORE FERRITE BEAD 120ohm 2012 TP 1 SNA 4 L2011 3301 001145 BEAD SMD 60ohm 4516 TP 70ohm 45MHz 82o hm 2 SNA 4 T0568 3301 001176 BEAD SMD 80ohm 2012 TP 2 SNA 4 T0568 3301 001404 BEAD SMD 30ohm 2012 TP 15 9OHM 30MHz 3 SA 4 T05...

Page 15: ...66 00008A LEVER BOTTOM ALL MODEL LDPE WHITE 4 01g 1 SNA 0 1 M0045 BN92 05739U ASSY ACCESSORY LS23EFVKU XF 1 SNA 2 M0114 BN39 00310D CBF SIGNAL DVI A DVI A cable 15P 10P U 1 SA 2 M0158 BN44 00129C ADAPTOR SAD4914F UV ECOFIT NORMAL 110 23 1 SA 3 BN94 03208G ASSY PCB MISC ADAPTOR BN44 00129C ECOFIT 1 SNA 4 BN81 02978A A S THREAD LOCKER 762 760G 0201 003005 0 001 SNA 4 BN81 02979A A S ADHESIVE SEALANT...

Page 16: ...875H 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 2007 300003 1 SNA 5 BN81 03008A A S RES CHIP 2007 300005 1 SNA 5 BN81 03009A A S RES CHIP 2007 300006 3 SNA 5 BN81 03010A A S RES CHIP 2007 300010 1 SNA 5 BN81 03011A A S RES CHIP 2007 300012 1 SNA 5 BN81 03019A A S RES CHIP 200...

Page 17: ...AG 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 RD03 1 SNA 3 BN63 05909A COVER STAND BOTTOM P2370 HIPS HB WH13 1 SNA 3 BN68 02009B MANUAL FLYER STAND Ecofit Lavende...

Page 18: ...dards 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 cabine...

Page 19: ...round 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 Immediat...

Page 20: ...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...

Page 21: ...1 4 1 Precautions Memo All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 22: ...6 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 75 H X 286 74 V 531 36 H x 298 89 V AC power voltage Frequency AC 110V 130V 60Hz AC 200V 240V 50Hz Power Consumption Typical 45...

Page 23: ... 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 Green Images ar...

Page 24: ...vailable in all locations BH68 00633B User s Guide Monitor Driver Natural Color software MagicTune software BN96 09890A Stand Body BN96 09628B 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 14V 3A BN44 00129B Cleaning Cloth 160mm x 120mm BN63 02368B All manuals and user guides at all guides com ...

Page 25: ...ecifications 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 All manuals and user guides at all guides com ...

Page 26: ... is connected correctly 2 The circuits to check 3 When the raster does not appear Function PBA Main PBA XL2370 LED Driver P2570 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 All manuals and user guides at all ...

Page 27: ... 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 the circuits related to I...

Page 28: ...4 3 4 Troubleshooting 4 2 1 Circuit diagrams when the power does not turn on All manuals and user guides at all guides com ...

Page 29: ...minals 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 panel No Check and replace the ci...

Page 30: ...4 5 4 Troubleshooting 4 3 1 When a blank screen is displayed Analog All manuals and user guides at all guides com ...

Page 31: ...4 6 4 Troubleshooting 4 3 2 Waveforms when no screen is displayed Analog All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 32: ...s 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 correctly inputted and ou...

Page 33: ...4 8 4 Troubleshooting 4 4 1 Circuit diagrams when a blank screen is displayed Digital All manuals and user guides at all guides com ...

Page 34: ...4 9 4 Troubleshooting 4 4 2 Waveforms when a blank screen is displayed Digital 1 2 All manuals and user guides at all guides com ...

Page 35: ...s 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 correctly inputted and ou...

Page 36: ...4 11 4 Troubleshooting 4 5 1 Circuit diagrams when a blank screen is displayed HDMI All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 37: ...4 12 4 Troubleshooting 4 5 2 Waveforms when a blank screen is displayed HDMI 1 2 All manuals and user guides at all guides com ...

Page 38: ... 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 Sy...

Page 39: ... 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 appropr...

Page 40: ...an 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 s...

Page 41: ...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 ...

Page 42: ...t to parallel port DDC MANAGER Connect to MAIN board CN102 Connect DDC Manager Jig to P2370H P2470H 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 P2370HA P2470HA ddc Analog 3 Select the other Port P2370HD P2470HD ddc Digital 4 Click Next OK button 1 2 3 4 All manuals and user guides at all gu...

Page 43: ...shooting 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 All manuals and user guides at all guides com ...

Page 44: ...k 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 All manuals and user guides at all guides com ...

Page 45: ...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 All manuals and user guides at all guides com ...

Page 46: ...4 21 4 Troubleshooting Inputting the Code HDCP 1 Run the service exe file 2 Click the HDCP button All manuals and user guides at all guides com a l l g u i d e s c o m ...

Page 47: ...4 22 4 Troubleshooting 3 Click the HDCP Write button and select MStar_HDCPKEY 4 Inputting the HDCP key is completed All manuals and user guides at all guides com ...

Page 48: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram Main Board All manuals and user guides at all guides com ...

Page 49: ...oard Optical Out LVDS Connector Connect to Panel EEPROM CN400 LVDS IC200 Scaler X201 Function LED Driver Inverter IC101 TMDS Switch OP700 CN604 CN703 CN102 CN700 Audio Out HDMI Jack DVI I Jack Adaptor All manuals and user guides at all guides com ...

Page 50: ...ay 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 Supplies...

Page 51: ...6 4 6 Wiring Diagram Memo All manuals and user guides at all guides com a l l g u i d e s c o m ...

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