COLOR MONITOR SyncMaster 150T SERVICE Manual COLOR MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Troubleshooting 5. Exploded View & Parts List 6. Electrical Parts List 7. Block Diagram 8. Wiring Diagram 9.
Samsung Electronics Co., Ltd.
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. 3. When the chassis is operating, semiconductor heatsinks are potential shock hazards. (READING SHOULD NOT BE ABOVE 0.
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.
2 Product Specifications 2-1 Specifications Description Item Digital Analog LCD Panel TFT-LCD panel, RGB vertical stripe, normaly white, 15-Inch viewable, 0.297 (H) x 0.297 (V) pixel pitch Scanning Frequency Horizontal : 30 kHz to 61 kHz (Automatic) Vertical : 56 Hz to 75 Hz (Automatic) Display Colors 16,772,216 colors Maximum Resolution Horizontal : 1024 Pixels Vertical : 768 Pixels Input Video Signal Analog, 0.
2 Product Specifications 2-2 Pin Assignments Sync Type 15-Pin Signal Cable Connector Separate Pin No.
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 IBM VGA2/ 70 Hz VGA3/ 60 Hz Timing 720 x 400 640 x 480 fH (kHz) 31.
2 Product Specifications Memo 2-4 SyncMaster 150T
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the SyncMaster 150T monitors. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions:1. Disconnect the monitor from the power source before disassembly. 2. Follow these directions carefully; never use metal instruments to pry apart the cabinet. 3-1-1 Removing the Stand 3-1-3 Standard Stand Disassembly 1.
3 Disassembly and Reassembly 3-2 Replacement Order of Lamp Assemblies - RN15PSS (Samsung Panel) 3-2 SyncMaster 150T
3 Disassembly and Reassembly SyncMaster 150T 3-3
3 Disassembly and Reassembly 3-4 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures.
4 Troubleshooting Notes: 1. Before troubleshooting, setup the PC’s display as below. • Resolution: 1024 x 768 • H-frequency: 48 kHz • V-frequency: 60 Hz 2. If no picture appears, make sure the power cord is correctly connected. 3. Check the following circuits. • No raster appears: Audio PCB, SMPS PCB, Main PCB • 12V develop but no screen: Main PCB • 12V does not develop: Audio PCB, SMPS PCB 4.
4 Troubleshooting 4-2 No Video [Analog] Check signal cable connection. OK Does the digital video signal appear at the Pin 48, 45, 42, 39, 38 of IC600? No 1 2 3 4 5 Yes Yes Check TFT-LCD panel and inventer. Is the Pin 1, 19 of IC701 High? No Check IC701 and related circuit. 6 7 8 9 10 Does the input signal appear at the Pin 27, 28, 30, 31 and 32 of IC600? (DHS, DVS, DEN, DCLK, LVDS-EN) Yes Check IC600 and related circuit.
4 Troubleshooting 4-3 No Video [Digital] Check signal cable connection. OK No Does the digital video signal appear at the Pin 37, 38, 39, 40, 41, 42, 45, 46, 47, 48 of IC600? Yes Yes Check TFT-LCD panel and inventer. Is the Pin 1, 19 of IC701 High? No Check IC701 and related circuit. Does the input signal appear at the Pin 27, 28, 30, 31 and 32 of IC600? (DHS, DVS, DEN, DCLK, LVDS-EN) Yes Check IC600 and related circuit.
4 Troubleshooting 4-4 No OSD There is video but no OSD. Yes Does the input signal appear at the Pin2, 5 and 10 of IC401? No Check IC401 and related circuit. 30 31 32 Yes While pushing a front control button does any pulse appear at Pin12 of IC401? No Check IC401 and related circuit. Yes Replace IC401.
4 Troubleshooting WAVEFORMS 1 IC146 #5 2 IC301 CH1 RMS = 1.45V CH1 RMS = 1.147 V 6 IC102 7 IC141 #4 3 IC501 #27 CH1 RMS = 1.227 V 8 IC151 #115 4 IC501 #28 CH1 RMS = 1.285 V 9 IC151 #117 5 FT509 CH1 RMS = 1.416V 10 IC211 #21 CH1 RMS = 3.272 V CH1 RMS = 3.257 V CH1 RMS = 2.520V CH1 RMS = 2.157 V CH1 RMS = 4.95 V 11 IC211 #26 12 IC501 #30 13 IC501 #31 14 IC501 #32 15 IC541 #5 CH1 RMS = 484mV CH1 RMS = 467mV CH1 RMS = 484mV CH1 RMS = 4.736 V CH1 RMS = 4.
4 Troubleshooting Memo 4-6 SyncMaster 150T
5 Exploded View and Parts List 5-1 Front Cover & LCD Ass’y SyncMaster 150T 5-3
5 Exploded View & Parts List 5-2 PCB Ass’y 5-4 SyncMaster 150T
5 Exploded View & Parts List 5-3 Rear Cover & Stand Ass’y SyncMaster 150T 5-5
6 Electrical Parts List 6-1 Main PCB Parts Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
6 Electrical Parts List Loc. No. Code No.
SyncMaster 150T ADC+PLL TDA8752 TMDS SII151 ANALOG PC DIGITAL PC User Key MCU Setup Data & User I/F gmZ2 Scaller OSD Power Sequence Control Back Light Control CLOCK LCD Pannel I/F 7 Block Diagram 7-1
7 Block Diagrams Memo 7-2 SyncMaster 150T
8 Wiring Diagram INVERTER NC BRIGHT NC BL_EN NC CN1 GND CON +5V GND GND +12V_ INVERTER +12V_ INVERTER NC 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 NC BRIGHT NC BL_EN NC CN600 CN101 GND CON +5V GND GND 10 +12V_ INVERTER 11 +12V_ INVERTER 12 NC 10 11 12 MAIN PCB CN100 SyncMaster 150T PC_RED_IN PC_GRN_IN PC_BLUE_IN GND GND 1 2 3 4 5 6 7 8 9 RX0+ AGND AGND AGND AGND 23 RXC24 RXC+ DDC_SCL DDC_SDA AGND RX110 RX1+ 11 AGND 12 AGND 13 14 15 16 17 18 11 12 13 14 15 12V GND 12V CN102 19 20 21 22 AGND DD
9 Schematic Diagrams 9-1 ADC & TMDS Part Schematic Diagram 16 17 ADC_EN MCU_CLAMP 18 M_HSYNC EXTCLK_ADC 19 HSYNC_PLL VSYNC_COAST PC_RED_IN PC_GRN_IN PC_BLUE_IN 20 AD_CLK 21 AD_HSYNC PC_RED_IN PC_GRN_IN PC_BLUE_IN AD_RED(7:0) 11 12 AD_GRN(7:0) 13 AD_BLU(7:0) OVCC_RX AVCC_RX PVCC_RX DVCC_RX Rx2+ Rx2Rx1+ Rx1Rx0+ Rx0RxC+ RxC- 29 22 SELFRASTER_D 23 24 25 RX2+ RX2- T_HSYNC T_VSYNC T_DE T_DCLK RX1+ RX1RX0+ RX0RXC+ RXC- 28 27 26 T_RED(7:0) T_GRN(7:0) T_BLU(7:0) TMDS_EN 9-1 SyncMaster
9 Schematic Diagrams 11 IC211 #26 12 IC501 #30 13 IC501 #31 16 IC161 #6 17 CH1 RMS = 484mV CH1 RMS = 467mV CH1 RMS = 484mV CH1 RMS = 62mV CH1 RMS = 540mV 18 19 20 21 22 CH1 RMS = 1.074 V CH1 RMS = 3.518 V CH1 RMS = 2.286 V CH1 RMS = 4.018 V CH1 RMS = 2.886 V 23 24 25 26 27 CH1 RMS = 2.882 V CH1 RMS = 2.874 V CH1 RMS = 2.902 V CH1 RMS = 1.560V CH1 RMS = 2.469 V 28 29 CH1 RMS = 2.995 V CH1 RMS = 2.
9 Schematic Diagrams 9-2 Micom & Power Part Schematic Diagram ADC_EN *TMDS_EN T_VSYNC 15 VSYNC_IN 14 T_HSYNC HSYNC_IN 3.
9 Schematic Diagrams 14 IC501 #32 15 IC541 #5 CH1 RMS = 4.736 V CH1 RMS = 4.
9 Schematic Diagrams 9-3 Scaler Part Schematic Diagram OVSYNCB 30 OVCLK OV_RED OV_GRN 31 OV_BLU OV_FBK OVACTIV1B 32 OVACTIV1B OVCLK OVSYNCB EXTCLK_ADC RESETB 3.3V_LVDSTX DAG(7:0) S-Panel 3.
9 Schematic Diagrams 1 IC146 #5 2 IC301 CH1 RMS = 1.45V CH1 RMS = 1.147 V 6 IC102 7 IC141 #4 CH1 RMS = 3.272 V CH1 RMS = 3.257 V 3 IC501 #27 CH1 RMS = 1.227 V 8 IC151 #115 CH1 RMS = 2.520V 30 31 32 CH1 RMS = 3.903 V CH1 RMS = 3.162 V CH1 RMS = 3.311 V SyncMaster 150T 4 IC501 #28 CH1 RMS = 1.285 V 9 IC151 #117 CH1 RMS = 2.157 V 5 FT509 CH1 RMS = 1.416V 10 IC211 #21 CH1 RMS = 4.
