LCD-Monitor Chassis Model LS17PEA LS19PEB SERVICE TFT-LCD Monitor 732N 932B Manual Fashion Feature -Lustrous/Colorful Appearance (Design) -Integrated UI applied -Built-in Scaler Sync Separator -Connectivity : 17" - Analog (15p Dsub) 19" - Analog (15p Dsub), Dual (24p DVI-D) -Power Consumption : 17"(34W), 19"(38W) -DPMS : under 1 W (230Vac)
Copyright Trademarks ©2006 by Samsung Electronics Co., Ltd. Samsung is the registered trademark of Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Samsung Electronics Co., Ltd. LS17PEA/LS19PEB Service Manual First edition February 2006. Printed in Korea.
Contents 1. Precautions ………………………………………………………………………………………………………………………………………1 1-1 1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1 1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2 1-3 Electrostatically Sensitive Devices (ESD) Precautions ……………………………………………………………………………… 1-2 1-4 Installation Precautions ………………………………………………………………………………………………………………… 1-3 2.
Contents 7. Block Diagram …………………………………………………………………………………………………………………………………7 7-1 7-1 Power Tree ………………………………………………………………………………………………………………………………… 7-1 7-2 Main Board Part (17") …………………………………………………………………………………………………………………… 7-2 7-3 Main Board Part (19") …………………………………………………………………………………………………………………… 7-3 7-4 IP Board Part (SMPS Part) ……………………………………………………………………………………………………………… 7-4 7-5 IP Board Part (Inverter Part) …………………………………………………………………………………………………………… 7-5 8.
1 Precautions 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 1-1-1 Warnings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power and DC power jack before servicing. 1-1-2 Servicing the LCD Monitor 1. When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. 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 1. 2. 3.
1 Precautions 1-4 Installation Precautions 1. For safety reasons, more than two people are required for carrying the product. 6. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may 2. Keep the power cord away from any heat emitting cause fire or electric shock. devices, as a melted covering may cause fire or electric shock. 7.
1 Precautions Memo 1-4
2 Product Specifications 2 Product Specifications 2-1 Fashion Feature -. Minimalism Design Something New -. Boltless Model (Clean Cut & Soft Surface) -. New Ball Hinge -. Color Variation. White, Black 2-2 LS17PEA Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, 17-Inch viewable, 0.264 (H) x 0.264 (V) mm pixel pitch Scanning Frequency Horizontal : 31 kHz ~ 81 kHz (Automatic) Vertical : 56 Hz ~ 75 Hz (UXGA : 60 Hz) Display Colors 16.
2 Product Specifications 2-3 LS19PEB Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, 19-Inch viewable, 0.294 (H) x 0.294 (V) mm pixel pitch Scanning Frequency Horizontal : 31 kHz ~ 81 kHz (Automatic) Vertical : 56 Hz ~ 75 Hz (UXGA : 60 Hz) Display Colors 16.
2 Product Specifications 2-4 Spec Comparison BI17BS / 19BS LS17PEA / LS19PEB 30 ~ 81 kHz 60 ~ 75 Hz 16,2M colors 30 ~ 81 kHz 60 ~ 75 Hz 16,7M colors 1280 x 1024 / 60 Hz 1280 x 1024 / 60 Hz H/V Separate, TTL, P. or N. 0.7 Vp-p @ 75ohm H/V Separate, TTL, P. or N. 0.
2 Product Specifications 2-5 Option Specification Item 2-4 Item Name CODE.
3 Alignments and Adjustments 3 Alignments and Adjustments This section of the service manual explains how to use the DDC MANAGER JIG. This function is needed for AD board change and program memory (IC110) change. 3-1 Required Equipment The following equipment is necessary for adjusting the monitor: - Computer with Windows 95, Windows 98, or Windows NT. - MTI-2031 DDC MANAGER JIG 3-2 Automatic Color Adjustment To input video, use 16 gray or any pattern using black and white. 1.
3 Alignments and Adjustments 3-6 Service Function Spec. 3-6-1 How to Display Service Function OSD 1. The value for brightness and contrast should be changed to zero. 2. Within 5 seconds, press the (Enter/Source) key. 3. Service function OSD will be displayed. -If you want to disable the service function OSD, you will have to power off. Panel Information Software Version Checksum Figure 2. The example of service function OSD The service function OSD is based on a grid of 29 columns x 12 rows.
3 Alignments and Adjustments 3-6-3 How to Control Service Function OSD -After changing the panel or lamp, you must reset service function OSD. -The case of panel change After changing the panel, press the menu key within 5 seconds,. Then, panel Ch. No increases one step and the panel time information is reset to zero. Simultaneously, other information is reset to zero (Upper/Lower lamp, Panel cycle). Figure 4.
3 Alignments and Adjustments 3-7 How to execute DDC 3-7-1 After exchange the Main PBA, confirm below items 1. PC color status check (Auto Color) 2. EDID Input (Analog and Digital) 3. Check the MCU Code (After change MCU Code, Do Auto color ) 4. Factory Reset 1) Run DDC Manager MTI-2050. 2) Select a DDC file name. Progtam : WinDDC BY SAMSUNG ELEC.Co. [Ver:4.65.12V] --- Modify : 20050425 DDC : 732N.ddc or 932B.ddc 3) Insert into DDC Manager Port 1 (analog) and make the DDC input as for the old dual model.
3 Alignments and Adjustments 5 5. Type in the monitor serial number and press Enter. *Repeat this step 2 to 5 times in digital inputs after the analog input. 3-8 How to execute MCU Code 3-8-1 Program Setting - Config Setting 1 2 3 1. Click Config Setting 2. Change SCL Signal at Pin Assignments 3.
3 Alignments and Adjustments 3-8-2 Change Batch File Path and DownLoad Code 5 4 6 7 8 4. Change the Code's Path to saved Path at your PC. 5. Save the Batch file. 6. Write Batch command "batch batch file name.txt" 7. Click "Execute" Button 8. If command is "Successful" , Hard Power On/Off until LED is Off - If command is "Error", 1. Hard Power Off 2. Write Command "forcesa" 3. Click "Execute" Button 4. Repeat again 7 to 9.
4 Troubleshooting 4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC 's display as below. • Resolution: 1024 x 768 • H-frequency: 61 kHz • V-frequency: 75 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. • No raster appears: Function PBA, Main PBA, I/P PBA • 5V develop but no screen: Main PBA • 5V does not develop: I/P PBA 4.
4 Troubleshooting 4-2 No Video (ANALOG 17", 19") Check signal cable connection and power. 1 X400 oscillate properly? No Replace or check related circuit. Yes Is there R, G, B input at R101, R100 and R103? No Check input part. Yes Is there Hsync, Vsync waveform 2 No 3 Check IC400 and related circuit. at Pin 100, 1 of IC 400? Yes Is there Hsync, Vsync waveform 2 No 3 Check IC200 and related circuit.
4 Troubleshooting WAVEFORMS 1 2 3 4-3
4 Troubleshooting 4-3 No Video (DIGITAL 19") Check signal cable connection and power. 1 X400 oscillate properly? No Replace or check related circuit. Yes Is there R, G, B input at 4 5 No R100, R101, R102, R103, 6 R104 and 6 R105? Check input part. Yes Is there waveform 7 No Check input part. at R106, R107? Yes Does the output signal appear at Pin 17~20, 22~27 of CN400? No Check IC400 and related circuit. Yes There are DC 5V at Pin 28, 29 and 30 of CN400? Yes Replace LCD Panel.
4 Troubleshooting WAVEFORMS 1 4 5 6 7 4-5
4 Troubleshooting 4-6
5 Exploded View & Parts List 5 Exploded View and Parts List -You can search for updated part codes through ITSELF web site. URL : http://itself. sec. samsung.co.
5 Exploded View & Parts List 5-2 Parts List Location 5-2 Code.No Item & Specification Q'ty SA/SNA T0003 BN96-04140G ASSY COVER P-FRONT;LS17PE (732N),ABS HB, 1 S.A M0215 BN07-00261A LCD-PANEL;CLAA170ES01,Haydn,6BIT FRC,354 1 S.A M0174 BN44-00124E IP BOARD;IP-35155A(P),Pebble,3.0 ~5.0mA, 1 S.A M0014 BN94-01092H ASSY PCB MAIN-PTZ,W/W;PTZ,W/W 1 S.N.A T0514 BN61-02784A BRACKET-SUPPORT;PEBBLE,SPTE,0.3 1 S.N.A M0006 BN96-04144A ASSY SHIELD P-COVER;PEBBLE17,SECC,T0.8 1 S.N.
5 Exploded View & Parts List 5-3 LS19PEB Exploded View M0014 M0174 M0013 T0003 M0215 T0514 M0006 M0013 M0013 5-3
5 Exploded View & Parts List 5-4 Parts List Location 5-4 Q'ty SA/SNA T0003 BN96-04142G Code.No ASSY COVER P-FRONT;LS19PE (932B),ABS HB, Item & Specification 1 S.A M0215 BN07-00279A LCD-PANEL;LTM190EX-L31,Haydn,6BIT FRC,39 1 S.A M0174 BN44-00124E IP BOARD;IP-35155A(P),Pebble,3.0 ~5.0mA, 1 S.A M0014 BN94-01092B ASSY PCB MAIN-STZ,W/W;LS19PEB*,SAA4 1 S.N.A T0514 BN61-02784A BRACKET-SUPPORT;PEBBLE,SPTE,0.3 1 S.N.A M0006 BN96-04145A ASSY SHIELD P-COVER;PEBBLE19,SECC,T0.8 1 S.N.
6 Electrical Parts List 6 Electrical Parts List 6-1 LS17PEA Parts List Level Loc. No. Code No. Description & Specification LS17PEASB/XBM 732N,SAA4/S17P0-LPE,17,LCD-MO,ECUADOR Q'ty SA/SNA Remark 0.1 M0001 BN90-01053B ASSY COVER FRONT;LS17PEASB/XAX 1 ..2 T0003 BN96-04140G ASSY COVER P-FRONT;LS17PE (732N),ABS HB, 1 S.N.A S.A ...3 M0145 BN96-04363A ASSY BOARD P-FUCNTION;Pebble,SJ06-01-023 1 S.A ....4 L0405 0601-001896 LED;SMD,BLUE,1.6x0.8x0.4mm,470,1.6x0.8x0 4 S.A ....
6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA Remark ....4 D125 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D126 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D127 0401-001056 DIODE-SWITCHING;MMBD4148SE,100V,200mA,SO 1 S.A ....4 D123 0403-001411 DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T 1 S.A ....4 D124 0403-001411 DIODE-ZENER;-,5.49-5.73V,200mW,SOD-323,T 1 S.A ....
6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA Remark ....4 R318 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R319 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R320 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R321 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R325 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....4 R326 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 1 S.A ....
6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA Remark ....4 C611 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C615 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C616 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C617 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....4 C618 2203-005005 C-CER,CHIP;100nF,10%,16V,X7R,1608 1 S.A ....
6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA Remark ....4 M0018 BN97-01309A ASSY MICOM;M-PE17A9BIa-1000,LS17PEASW/ED 1 S.A .....5 IC115 1107-001561 IC-FLASH MEMORY;25VF010,128Kx8Bit,SOP,8P 1 S.N.A ..2 M2893 BN96-02854J ASSY MISC P-FFC CABLE;Haydn RTA Refresh 1 S.A ..2 M0006 BN96-04144A ASSY SHIELD P-COVER;PEBBLE17,SECC,T0.8 1 S.N.A BN61-02429D STUD-PEM;PNB,M2.8,D7,L20,ZPC(SIL),SUM24L 1 S.N.A ...
6 Electrical Parts List 6-2 LS19PEB Parts List Level Loc. No. Code No. Description & Specification SA/SNA Remark LS19PEBSWV/EDC 932B,SAB3/S19P0-LPE,19,LCD-MO,NETHERLAND ASSY COVER FRONT;LS19PEBSW/EDC ASSY COVER P-FRONT;LS19PE (932B),ABS HB, COVER-FRONT;PEBBLE,ABS HB,2.4,WH13,SF050 KNOB POWER;PEBBLE,WH12,TPU,HB KNOB CONTROL;PEBBLE,ABS,HB,WH13,SF-0500 ASSY BOARD P-FUCNTION;Pebble,SJ06-01-023 SCREW-TAPTITE;BH,+,-,B,M3,L8,ZPC(BLK),SW GUIDE-PANEL;PEBBLE,SECC,0.5,LS19PEB COVER-SHEET;Rhcm,PE Vinyl,T0.
6 Electrical Parts List Level ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 Loc. No.
6 Electrical Parts List Level ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 6-8 Loc. No.
6 Electrical Parts List Level ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 ....4 .....5 ....4 ..2 ..2 ...3 ...3 ...3 ...3 ..2 Loc. No.
6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA Remark ..2 ..2 T0562 M0174 6046-001013 BN44-00124E STAND OFF;M3,L5,Ni PLT,SUM24L,#4-40 IP BOARD;IP-35155A(P),Pebble,3.0 ~5.0mA, 4 1 S.N.A S.A 0.1 ..2 M0112 BN91-01212A BN63-02887A ASSY SHIELD;LS19PEBSW/EDC SHIELD-LAMP;PEBBLE,SPTE,0.3,19INCH 1 1 S.N.A S.N.A 0.1 M0019 BN92-02024A ASSY LABEL;LS17PEASW/EDC,SAA4 1 S.N.A 0.1 ..2 ..2 ..2 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ...3 ..2 ...3 ...3 ...3 ...3 ..
7 Block Diagrams 7 Block Diagram 7-1 Power Tree 7-1
7 Block Diagrams 7-2 Main Board Part (17") 7-2
7 Block Diagrams 7-3 Main Board Part (19") 7-3
7 Block Diagrams 7-4 IP Board Part (SMPS Part) 7-4
7 Block Diagrams 7-5 IP Board Part (Inverter Part) 7-5
7 Block Diagrams Memo 7-6
8 Wiring Diagram 8 Wiring Diagram 8-1 Wiring Diagram 17" (Connect to inverter Cable) (Connect to LVDS Cable) (Connect to Function Cable) (Connect to D-sub Cable) 8-1
8 Wiring Diagram 8-2 Wiring Diagram (19") (Connect to inverter Cable) (Connect to LVDS Cable) (Connect to Function Cable) (Connect to DVI-D Cable) 8-2 (Connect to D-sub Cable)
8 Wiring Diagram 8-3 Wiring Diagram (Code No.
8 Wiring Diagram Memo 8-4
9 Schematic Diagrams 9 Schematic Diagrams 9-1 Schematic Diagrams (17") - This Document can not be used without Samsung s authorization.
9 Schematic Diagrams 9-2 Schematic Diagrams (19") 9-2
10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front 17" 1. Menu button Opens the OSD menu. Also use to exit the OSD menu or return to the previous menu. 2. MagicBright button MagicBright is a new feature providing optimum viewing environment depending on the contents of the image you are watching. Currently six different modes are available: Custom, Text, Internet, Game, Sport and Movie. Each mode has its own pre-configured brightness value.
10 Operating Instructions and Installation 4. Enter button / SOURCE button (19") Activates a highlighted menu item. / Push the 'SOURCE', then selects the video signal while the OSD is off. (When the source button is pressed to change the input mode, a message appears in the upper left of the screen displaying the current mode -- analog or digital input signal.) 5. AUTO button Use this button for auto adjustment. 6. Power button Use this button for turn the monitor on and off.
10 Operating Instructions and Installation 10-3 Connecting the monitor (17") ● Rear of Monitor ● Rear of Computer ● New Model Macintosh ● Old Model Macintosh 1. Connect the power cord for your monitor to the power port on the back of the monitor. Plug the power cord for the monitor into a nearby outlet. 2-1. Using the D-sub (Analog) connector on the video card. Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor. 2-2. Connected to a Macintosh.
10 Operating Instructions and Installation 10-3-1 Connecting the monitor (19") ● Rear of Monitor ● Rear of Computer ● New Model Macintosh ● Old Model Macintosh 1. Connect the power cord for your monitor to the power port on the back of the monitor. Plug the power cord for the monitor into a nearby outlet. 2-1. Using the D-sub (Analog) connector on the video card. Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor. 2-2.
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the LS17PEA/LS19PEB TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions: 1. Disassemble stand on a flat desk. 2. Disconnect the monitor from the power source before disassembly. Description Picture Description 1.
11 Disassembly and Reassembly Description Picture Description 4. Remove the marked parts from both sides of the front cover, as shown in the figure below. 5. Remove the marked part from the front cover, as shown in the figure below. Caution: Do not lift the front cover over position (1), which may cause damage to it. (1) 6. Turn the monitor so the back of it is facing upwards. Lift up and remove the back cover. 7. Use the jig to remove the shield lamp. (Be careful Shield.
11 Disassembly and Reassembly Description 8. Disconnect cables. (LVDS, INVERTER and FUNCTION cable) Picture Description 17" LVDS INVERTER FUNCTION 19" LVDS INVERTER FUNCTION 9. Lift up the LCD panel. 10.
11 Disassembly and Reassembly 설명 사Description 진 설명 11.Remove screws. (17"=2 screws, 19"=4 screws) Picture Description 17" 19" 12. Remove 5 screws. 13. Lift up the Bracket Support.
11 Disassembly and Reassembly 설명 사Description 진 설명 Picture Description 14. Lift up the Main PCB and IB Board. 15. Main PCB and IB Board 17" 19" 11-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures.
11 Disassembly and Reassembly 11-3 Stand 11-3-1 Installing the Stand A: Monitor B: Connecting pin C: Stand 설명 사Description 진 설명 1. Insert the connecting pin into the stand. 2. Stand the screw handles up and tighten the screws firmly by turning them. 3. Place the screw handles back down. 11-6 Caution When lifting up or moving the monitor, do not lift the monitor upside down while holding only the stand, as this may cause the monitor to fall, leading to damage or personal injury.
11 Disassembly and Reassembly 설명 사Description 진 설명 Picture Description 4. Turn the stand so ▽mark on the connecting pin is facing the front. 4. Check the connecting part between the monitor and the stand. 4. Tilt the monitor upwards at an angle of 5 ° to 10° so that the base is closer to you than the top. Then hold the monitor on the stand by its top parts and push them downwards. Push (You can assemble it more easily by pushing it down while wriggling it a little to the left and right.) 5.
11 Disassembly and Reassembly 11-3-2 Removing the Stand 설명 사Description 진 설명 1. Place a soft cloth or cushion on the table and place the monitor with the front facing downwards. 2. Hold the monitor and lean the stand upwards. 3. Hold the monitor, and then twist the stand strongly to the left and pull it out. 4. Stand the screw handles up and unfasten the screws by turning them.
11 Disassembly and Reassembly 설명 사Description 진 설명 Picture Description 5. Remove the connecting pin from the stand.
11 Disassembly and Reassembly Memo 11-10
12 PCB Layout 12 PCB Diagram 12-1 Main PCB (17") Regulator 3.3 Scaler Regulator 1.
12 PCB Layout 12-2 Main PCB (19") Regulator 3.3 Scaler Regulator 1.
13 Circuit Descriptions 13 Circuit Descriptions 13-1 Overall Block Structure 13-1-1 Power Tree 1. When the AD board is in DPMS state: 1.1 The IP has been designed so that it operates with a power consumption of less than 0.6W of. 1.2 The Scaler consumes power up to 37mA 1.3 The power to the panel is switched off 2. When the AD board is operating normally: 2.1 The maximum power consumption of the panel lamps is described below (It may vary depending on the panel manufacturer) 17" : 4*(7.5mA*650mVrms)=4*4.
13 Circuit Descriptions 13-1-2 Main Board Parts 17" 19" 13-2
13 Circuit Descriptions 1. Inverter: A conversion device that converts DC rated voltage/current to high ones necessary for the panel lamp. 2. DC/DC(Regulator): General term for DC to DC converting devices. The IP board receives 5V and outputs 1.8 or 3.3V that is supplied to the scaler (GM5726). 3. Power MosFET: The IP board receives 5V and outputs a lower voltage in DPMS mode and supplies the whole 5V for the panel operating board in normal conditions.
13 Circuit Descriptions 13-1-3 IP BOARD BLOCK(POWER) Parts 13-1-4 IP BOARD BLOCK( INVERTER ) Parts 13-4
13 Circuit Descriptions 13-1-5 IP BOARD ( inverter ) PROTECTION Parts Pebble INVERTER CONTROLER FAN7310 have 2-way of the PROTECTION MODE. 1. OVP[Over Voltage Protection] : If the Voltage of the series capacitors C10 & C15 is over the 2.0V, the Inverter latched-off.[See the Picture1] 2. OLP[Over Load Protection] : If the inverter output harness is opened(No-output current), the base of the Q1 turns on and chage the C9 ovter 2V and then, the Inverter latchedoff[See the Picture2] Figure 1. Figure 2.
13 Circuit Descriptions 13-2 Trouble Shooting 13-2-1 IP BOARD(Power) Power On No Check fuse Change FUSE Yes 3 pin of FDM0565R Vcc system in normal: HIGH No Check the Vcc system Yes 1 pin of FDM0565R Check the drain system Normal: Switching No Check the main switching Yes Check the protection system No Check the output current Yes Check others Harness, Inlet 13-6 No Check the feedback system
13 Circuit Descriptions 13-2-1 IP BOARD(Inverter) Power On Check the 13V line No Check the power system Yes 1 and 2 pins of FDM0565R Check Protection Normal:0.6V~0.8V No Check the IC drive Check MOSFET No Check the OVP and OLR circuits Yes 1 and 2 pins of FDM0565R Check Protection Normal:0.6V~0.
13 Circuit Descriptions 13-3 IP BOARD(Power) Schematic Diagrams 13-8
13 Circuit Descriptions 13-4 IP BOARD(Inverter) Schematic Diagrams 13-9
13 Circuit Descriptions Memo 13-10
14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms -TFT-LCD (Thin film Transistor Liquid Crystal Display) ADC(Analog to Digital Converter) This is a circuit that converts from analog signal to digital signals. -PLL(Phase Locked Loop) During progressing ADC, Device makes clock synchronizing HSYNC with Video clock -Inverter Device that supplies Power to LCD panel lamp. This device generates about 1,500~2,000V.
14 Reference Infomation user. The frequency of this repetition per second is called Vertical Frequency or Refresh Rate. Unit: Hz Example: If the same light repeats itself 60 times per second, this is regarded as 60 Hz. -Horizontal Frequency The time to scan one line connecting the right edge to the left edge of the screen horizontally is called Horizontal Cycle. The inverse number of the Horizontal Cycle is called Horizontal Frequency.
14 Reference Infomation 14-2 Pin Assignments Sync Type Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 15-Pin D-Sub Signal Cable Connector Separate Composite Sync-on-green Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) H-Sync. V-Sync. DDC Clock (SCL) Red Green Blue GND DDC Return (GND) GND-R GND-G GND-B DDC Power Input (+5V) Self Raster GND Bi-Dr Data (SDA) H/V-Sync. Not Used DDC Clock (SCL) Red Green + H/V Sync.
14 Reference Infomation 14-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computergenerated video signals. Table 14-1 Timing Chart VESA IBM Mode VGA2/ 70 Hz Timing VGA3/ 60 Hz 640/75 Hz 800/60 Hz 800/75 Hz 1024/60 Hz 1024/75 Hz 1280/60 Hz 1280/75 Hz 720 x 400 640 x 480 640x480 800x600 800x600 1024x768 1024x768 1280x1024 1280x1024 fH (kHz) 31.469 31.469 37.500 37.879 46.875 48.363 60.023 63.981 79.
14 Reference Infomation 14-4 Preset Timing Modes -If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED is on. Refer to the video card manual and adjust the screen as follows. Table 1. Preset Timing Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (H/V) MAC, 640 x 480 35.000 66.667 30.
14 Reference Infomation 14-5 Panel Description Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks BN68-00239H - SEC LT140X1-002 BN07-00004A SA SEC LT150XS-L01 BN07-00009A SB - SEC LT150XS-L01-B BN07-00022A SC - SEC LTM150XS-L02 BN07-00005A SD - SEC LT181E2-132 BN07-00001A SE - SEC LT150XS-T01 BN07-00010A SF - SEC LTM181E3-132 BN07-00019A SG - SEC LT170E2-131 BN07-10001D SH - SEC LT181E2-131 BN07-10001E SJ - SEC LTM170E4-L01 BN07-00018A SK -
14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks SEC LTM150XH-L06 BN07-00117A S7 SEC LTM153W1-L01 BN07-00118A S8 "ZPD Panel code" "ZPD Panel code" SEC LTM170WP-L01 BN07-00119A S9 "PVA Panel for NIKE" SEC LTM213U4-L01 BN07-00039A E1 21.
14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks CPT CLAA170EA07 BN07-00174A PTH "CPT 17"" PSWG panel code derivation? CPT CLAA170EA07 BN07-00174B PTZ CPT 17"""" PSWG type new Panel code""" CPT CLAA170EA07 BN07-00174B PTZ CPT 17" PSWG type new Panel code TOSHIBA LTM15C419(A) BN07-00002A TA - TOSHIBA LTM15C423(B) BN07-00006A TB - TOSHIBA LTM18C161 BN07-00008A TC - TOSHIBA LTM15C443 BN07-00031A TD - TOSHIBA LTM15C458 BN07-00043A TE
14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks HYUNDAI HT17E11-200 BN07-00049A DB TN MODE HYUNDAI HT17E11-300 BN07-00093A DC HT17E11-300 ZPD panel HYUNDAI HT17E11-400 BN07-00094A DD HT17E11-400 normal panel HYUNDAI HT17E11-400 BN07-00095A DE HT17E11-400 ZPD panel code HYUNDAI HT17E12 BN07-00096A DF HT17E12 ( Narow & slim Design ) HYUNDAI HT17E12 BN07-00105A DG ZPD Panel code HYUNDAI HT15X15-D00 BN07-00146A DH "Development for Ares
14 Reference Infomation Memo 14-10
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