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 For continued safety, do not attempt to modify the (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC power jack before servicing.
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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.
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2 Product Specifications 2-2 Pin Assignments Sync 15-Pin D-Sub Signal Cable Connector Type Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync. Blue Blue Blue DDC Return (GND) DDC Return (GND) DDC Return (GND) GND-R GND-R GND-R GND-G GND-G GND-G GND-B...
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2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1 Timing Chart Mode VESA VESA VGA2/ VGA3/ 640/75 Hz 800/60 Hz 800/75 Hz 1024/60 Hz 1024/75 Hz 1280/60 Hz...
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the GY17HS*/GY17HSS*/GY17HSG* TFT-LCD monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1-1 GY17HS* Cautions:1. Disconnect the monitor from the power source before disassembly. 2.
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3 Disassembly and Reassembly 6. Disconnect inverter cables and LVDS cable from the boards. 7. Remove 6 screws from the panel and remove the panel shield. 8. Disconnect panel from the cover front and disconnect touch screen from the cover front. 3-1-2 GY17HSS* 1.
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3 Disassembly and Reassembly Lift up the shield and remove 5 screws from the boards. 5. Disconnect inverter cables and LVDS cable from the boards. 6. Remove 6 screws from the panel and remove the panel shield. 7. Disconnect panel from the cover front and disconnect strengthening glass from the cover front.
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3 Disassembly and Reassembly 3. Remove 2 screws from the shield and disconnect function cable, inverter cable from the shield. 4. Lift up the shield and remove 5 screws from the boards. 5. Disconnect inverter cables and LVDS cable from the boards. 6.
4 Alignments and Adjustments This section of the service manual explains how to use the RS232 JIG. This function is needed for AD board change and program memory (IC110) change. 4-1 Required Equipment The following equipment is necessary for adjusting the monitor: •...
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4 Alignments and Adjustments 4-6 Service Function Spec. 4-6-1 How to Display Service Function OSD 1. The value for brightness and contrast should be changed to zero. 2. Within 5 seconds, press the exit key. 3. Service function OSD will be displayed. ❇...
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4 Alignments and Adjustments 4-6-3 How to Control Service Function OSD • After change the panel or lamp, you must reset service function OSD. • The case of panel change After changeing the panel, press the menu key within 5 seconds,. Then, panel Ch.
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4 Alignments and Adjustments 4-6-5 Pixel shift and language selection change * Note : Use the '-' key to vary values for new pixel shift and country menu. 1. Pixel shift : on ➔ off - When a same picture is displayed with no change for an extended period of time, this function prevents the display panel from image sticking.
5 Troubleshooting Notes: 1. Before troubleshooting, setup the PC’s display as below. • Resolution: 1280 x 1024 • H-frequency: 64 kHz • V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. •...
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5 Troubleshooting 5-2 No Video Check signal cable connection and power. Replace or Do X301 oscillate properly? check related circuit. Check input part. Is there R, G, B input at R427, R428 and R429? Check IC303 and related circuit. Does sync appear at Pin 8 and 10 of IC201? Is there sync and data output Check the power related to R302, R303, R305, R304 and RA301 ~ RA312?
6 Exploded View and Parts List ❈ You can search for updated part codes through CMS web site. URL : http://itself.sec.samsung.co.kr/ 6-1 GY17HS* GY17HS*/GY17HSS*/GY17HSG*...
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6 Exploded View & Parts List 6-2 GY17HSS* GY17HS*/GY17HSS*/GY17HSG*...
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6 Exploded View & Parts List 6-3 GY17HSG* GY17HS*/GY17HSS*/GY17HSG*...
7 Electrical Parts List ❈ You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 7-1-1 GY17HS* Main PCB Parts Level Loc. No. Code No. Description Specification Remarks GY17HSSSC/EDC E23-GY17HSSSC/EDC SEC,LTM170EU-L11 BN94-00516F ASSY PCB MAIN-E23 GY17HS...
11 Schematic Diagrams 11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-1 Schematic Diagram Power/Inverter CN101 +12V not used slcon9p LVDS_3.3V_M DOR(7:0) DOG(7:0) DOB(7:0) DER(7:0) DEG(7:0) DEB(7:0) LVDS_3.3V BD103 TOUCH SCREEN POWER 1.5uH C170 TP1461 BD104 2.2nF...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-2 Schematic Diagram LVDS_3.3V_M C401 10000nF L402 L401 1.5uH 1.5uH DGND DOR(0:7) IC401 C402 M385 100nF DOR(4) VCC_1 TXIN4 DOR(7) DOR(3) DGND TXIN5 TXIN3 DOR(5) DOR(2) TXIN6...