Samsung SyncMaster T190G Service Manual Download Page 1

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LCD-Monitor

Chassis : LTW19HS / LTW19GS
Model

: T190 / T190(G)

SERVICE

Manual

TFT-LCD Monitor

Contens

T190 / T190(G)

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

7. Schematic Diagram

Summary of Contents for SyncMaster T190G

Page 1: ... TFT LCD Monitor Contens T190 T190 G 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 7 Schematic Diagram ...

Page 2: ...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 Error Examples and Actions 4 10 4 6 Adjustment 4 11 5 Exploded View Part List 5 1 5 1 Exploded View T190 T190 G 5 1 5 2 Parts List T190 T190 G 5 3 6 Wiring Diagram 6 1 6 1 Wiring Diagram Main Board 6 1 6 2 Wiring Diagram IP Board 6 2 6 3 Connector Functions 6 3 6 4 Cab...

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 2008 Samsung Electronics Co Ltd All rights reserved Printed in Korea P N BN82 00355A 00 ...

Page 4: ...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 Place a soft cloth on the table and place the monitor onto it with the front part facing downwards Hold the monitor set with one hand and hold and pull the stand body backwards with the other hand to remove th...

Page 5: ...ly Description Photo Screws 4 Remove the cover and the LCD panel using the provided jig on both grooves at the bottom 5 Remove the INVERTER wire LVDS cable and FUNCTION cable and then remove the SHIELD COVER INVERTER LVDS FUNCTION ...

Page 6: ...HIELD LAMP of left side disassemble lamp wire between panel and IP Board 7 Remove the four 4 screws shown in the figure and remove the Bracket support 8 Remove the two 2 screws and then remove the holders from the four 4 snaps designated in the right figure using the provided jig ...

Page 7: ...mbly 10 The assembly is in the reverse order of the disassembly 11 Connect the disassembled snap and the LED module again 12 Fix the connecting wire with filament tape Caution If the wire is damaged when closing the cover an operating error may occur Therefore make sure to close the cover after fixing it with filament tape 필라멘트테이프 ...

Page 8: ...embly and Assembly Description Photo Screws 13 The assembly is in the reverse order of the disassembly Insert the cover into the groove and then press both sides The assembly is in the reverse order of disassembly ...

Page 9: ...3 6 3 Disassembly and Assembly Memo ...

Page 10: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LS19TWHSXV XF Exploded View T190 T190 G T0003 M0215 M0112 M0013 BN96 07927A STD M0027 BN63 04506A ...

Page 11: ...15 BN07 00493A LCD PANEL LTM190M2 L31 2 1 S A BN63 04506A SHIELD LAMP T19W SPTE T0 3 1 S N A M0112 BN91 02262A ASSY SHIELD LS19TW TOC 1 S N A M0013 BN96 07380A ASSY COVER P REAR LS19TW PMMA ABS HB BK2 1 S A T0312 BN96 07927A ASSY COVER P REAR SUB LS19TW PMMA ABS HB 1 S A STD BN96 07347C ASSY STAND P BODY LS22TW PMMA ABS HB SM5 1 S A M0027 BN96 07385B ASSY STAND P BASE LS19TW ABS HB BK26 H G 1 S N ...

Page 12: ...T G25 42 6X10 31 BN96 0 1 S N A 5 BN81 01715A A S HARNESS PST0716 01 BN96 07569A 1 S N A 5 BN81 01716A A S SHADING TAPE 1350 98 9X14 82 1 S N A 5 T0174 BN97 02297N ASSY SMD T W W 1 S N A 6 BN81 01712A A S PCB FR 4 0 6T 8 68X7 05 BN96 07569A 1 S N A 6 BN81 01713A A S LED MWHT213Z BN96 07569A 1 S N A 6 BN81 01714A A S RESISTOR RC1206JR 0733R BN96 07569A 1 S N A 3 M0145 BN96 07890B ASSY BOARD P FUNCT...

Page 13: ...50gf 4 5x4 5x1 5 1 S A 6 PCB BN41 01033A PCB FUNCTION T Function PCB FR 4 2 MP 1 1 S N A 0 1 M0002 BN90 01622A ASSY COVER REAR LS19TW_TOC 1 S N A 2 M0013 BN96 07380A ASSY COVER P REAR LS19TW PMMA ABS HB BK2 1 S A 3 CCM1 BN63 02183D COVER SHEET Rhcm PE Vinyl T0 05 680mm 20 0 5 S N A 3 M0006 BN63 04432A COVER REAR T190 PMMA ABS HB BK23 H GLOSS 1 S N A 3 M0126 BN73 00170B RUBBER FOOT 943BW 2043BW RUB...

Page 14: ...V 200m A SO 1 S A 4 D110 0401 001056 DIODE SWITCHING MMBD4148SE 100V 200m A SO 1 S A 4 D600 0402 001614 DIODE RECTIFIER S1G 400V 1A DO 214AC TP 1 S A 4 D601 0402 001614 DIODE RECTIFIER S1G 400V 1A DO 214AC TP 1 S A 4 ZD100 0403 001411 DIODE ZENER 5 49 5 73V 200mW SOD 323 T 1 S A 4 ZD101 0403 001411 DIODE ZENER 5 49 5 73V 200mW SOD 323 T 1 S A 4 ZD102 0403 001411 DIODE ZENER 5 49 5 73V 200mW SOD 32...

Page 15: ...P 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000071 R CHIP 22ohm 5 1 10W TP 160...

Page 16: ... CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000090 R CHIP 10Kohm 5 ...

Page 17: ...CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 ...

Page 18: ...CHIP 10000nF 80 20 10V Y5V 3216 1 S A 4 C120 2203 005437 C CER CHIP 10000nF 80 20 10V Y5V 3216 1 S A 4 C607 2402 001128 C AL SMD 100 F 20 16V TP 6 3X5 7mm 1 S A 4 C629 2402 001128 C AL SMD 100 F 20 16V TP 6 3X5 7mm 1 S A 4 C639 2402 001128 C AL SMD 100 F 20 16V TP 6 3X5 7mm 1 S A 4 X202 2801 003667 CRYSTAL SMD 14 31818MHz 30ppm 28 AAN 16p 1 S A 4 T0568 3301 001407 BEAD SMD 30ohm 1608 300mA TP 0 4o...

Page 19: ... WARRANTY CARD SAMSUNG BA 1 S N A 4 BH68 00297F MANUAL FLYER 10 WARRANTY CARD ENVELOPE S 1 S N A 3 BN63 02368A CLOTH LS07BTT SUEDE 0 6 160 120 1 S N A 3 M0215 BN96 07349A ASSY MANUAL P IB QSG T220 T200 T190 W W 1 S N A 4 BH68 00376L MANUAL FLYER 06 QSG LCDQUICK SETUP GUIDE 1 S N A 4 BN59 00716A S W DRIVER 01 IB T220 T200 T190 Syncmast 1 S N A 2 STD BN96 07347C ASSY STAND P BODY LS22TW PMMA ABS HB ...

Page 20: ... P WIRE MCKINLEY ABS HB BK23 1 S N A 4 6902 000336 BAG ZIPPER LDPE T0 05 W70 L80 TRP 1 S N A 4 M0114 BN61 03555A HOLDER WIRE MCKINLEY ABS HB BK26 1 S N A 0 1 M0003 BN92 03510T ASSY BOX LS19TWHSXV XF 1 S N A 2 BN69 02570B BOX 01 SET T19 CB SY 01 A1 W515 D475 H11 1 02 S N A 2 BN96 02895A ASSY MISC P 01 HANDLE PACKING ALL MODEL 1 S N A 3 M0102 BN66 00008A LEVER BOTTOM ALL MODEL LDPE WHITE 1 S N A 3 M...

Page 21: ...onal 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 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...

Page 22: ...trument 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 electrici...

Page 23: ...om being exposed 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 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 Con...

Page 24: ...1 4 1 Precautions Memo ...

Page 25: ...30 kHz 81 kHz Automatic Vertical 56 Hz 75 Hz WSXGA 60Hz Display Colors 16 7 Million colors Maximum resolution Horizontal 1440 Pixels Vertical 900 Pixels Input Signal Analog DVI Digital Input Sync Signal Seperate H V sync Composite H V Sync on Green Level TTL level Maximum Pixel Clock rate 146 Mhz Active Display Horizontal Vertical 408 24 H x 255 15 V AC power voltage Frequency AC 110V 130V 60Hz AC...

Page 26: ...ght 7 step 7 step 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 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 ...

Page 27: ...tronics Service center Warranty Card Not available in all locations BH68 00633B User s Guide Monitor Driver Natural Color Pro Software BN59 00716A D Sub 15 Pin Cable BN39 00244G Power Cord 3903 000042 2 4 Accessories Sold separately Product Description Ccde No Remark DVI Cable BN39 00246L Samsung Electronics Service center ...

Page 28: ...2 4 2 Product specifications Memo ...

Page 29: ...reen is blank check whether the power cord is connected correctly The circuits to check 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 Enter Source button for more than five 5 seconds to return the monitor to factory mode 1 2 3 4 ...

Page 30: ...rd 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 CN 600 IC 602 IC 601 Diagnostics 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...

Page 31: ...4 3 4 Troubleshooting 4 2 1 Circuit diagrams when the power does not turn on ...

Page 32: ...14 R118 Diagnostics Yes Check the signal cables and their connections Yes No Check the R111 R114 and R118 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 the CN400 Do the Hsync and Vsync waveforms appear at pins 32 33 of IC200 respectively Do the RGB inputs appe...

Page 33: ...4 5 4 Troubleshooting 4 3 1 When a blank screen is displayed Analog ...

Page 34: ...4 6 4 Troubleshooting 4 3 2 Waveforms when no screen is displayed Analog ...

Page 35: ...ted correctly to the IP board CN 400 X 201 IC 200 R100 R101 R103 R107 Diagnostics Yes Check the signal cables and their connections Yes Check and replace the circuits related to X201 No Is X201 oscillating correctly Do the inputs appear at R100 R101 R103 and R107 Check the R100 R101 R103 and R107 input terminals No Yes Do output signals appear at pins 8 to 30 of CN400 Check the circuits related to...

Page 36: ...4 8 4 Troubleshooting 4 4 1 Circuit diagrams when a blank screen is displayed Digital ...

Page 37: ...4 9 4 Troubleshooting 4 4 2 Waveforms when a blank screen is displayed Digital ...

Page 38: ... 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 p...

Page 39: ...ic Service Items to Perform after Replacing a Board 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 1 Use when updating the AD board code 2 Download the WinDDC program DDC Input program and Hex and DD...

Page 40: ...he 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 th...

Page 41: ...e 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 ...

Page 42: ...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 ...

Page 43: ...U 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 ...

Page 44: ...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 ...

Page 45: ...4 17 4 Troubleshooting Inputting the Code HDCP 1 Run the service exe file 2 Click the HDCP button ...

Page 46: ...4 18 4 Troubleshooting 3 Click the HDCP Write button and select MStar_HDCPKEY 4 Inputting the HDCP key is completed ...

Page 47: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram Main Board Lamp wire for Panel LVDS for Panel VGA Input ...

Page 48: ...Wiring Diagram IP Board Function Connector Connect to IP Board RGB Connector Connect to PC LVDS Connector Connect to Panel 3708 001150 Scaler SE758MRH LF 3711 003847 3701 001219 IP board 3701 001173 DVI Connector Connect to PC ...

Page 49: ...ccur 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 CN101 Connects the function board When a problem occurs The No LED screen and Function failure errors 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 oc...

Page 50: ...6 4 6 Wiring Diagram Memo ...

Page 51: ...rated into one chip SE758MRH LF Flash Memory IC201 Stores the MCU program embedded in the scaler It is of a flash type and rewritable MX25LV512 IC203 Stores the OSD and various timing values 24C08 IC202 The memory to which DIGITAL DDC data is input 24C02 Regulator An IC that receives DC voltage inputs It is used in circuits that stabilize the DC voltage NCP117DT18T5G APL1117 33VC SE758MRH LF ...

Page 52: ...r Part 7 3 Schematic Diagrams Power Flowchart SE758MRH LF Embedded MCU Function Receives analog and digital input and sends it to the LVDS according to the panel resolution Stores the MCU code Hex Stores the OSD value and timing information for each mode ...

Page 53: ...7 3 7 Schematic Diagram 7 4 Schematic Diagrams IP Board SMPS Part ...

Page 54: ...7 4 7 Schematic Diagram Inverter Part ...

Page 55: ...7 5 7 Schematic Diagrams 7 5 Schematic Diagrams Main PBA This Document can not be used without Samsungs authorization Scaler SE758MRH LF DVI Part Connector Analog Part ...

Page 56: ...7 6 7 Schematic Diagrams Memo ...

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