TFT-LCD MONITOR Chassis MJ15AS* MJ15BS* MJ17AS* MJ17BS* MJ19AS* MJ19BS* SERVICE Model 510N 510T 710N 710T 910N 910T Manual TFT-LCD MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignments & Adjustments 5. Troubleshooting 6. Exploded View & Parts List Simple Stand 7. Electrical Parts List 8. Block Diagram 9. Wiring Diagram 10. PCB Layout 11. Schematic Diagrams 12.
❈ 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. Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Kyungki-Do, Korea,443-742 Printed in Korea P/N : BN82-00087S-00 http://itself.sec.samsung.co.
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. (READING SHOULD NOT BE ABOVE 0.5mA) 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.
2 Product Specifications 2-1 MJ15AS*/MJ15BS*/MJ17AS*/MJ17BS* Specifications Description Item MJ15AS*/MJ15BS* MJ17AS*/MJ17BS* LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, 15-Inch viewable, 0.297 (H) x 0.297 (V) mm pixel pitch TFT-LCD panel, RGB vertical stripe, normally black transmissive, 17-Inch viewable, 0.264 (H) x 0.
2 Product Specifications 2-2 MJ19AS*/MJ19BS* Specifications Description Item LCD Panel TFT-LCD panel, RGB vertical stripe, normally black transmissive, 19-Inch viewable, 0.297 (H) x 0.297 (V) mm pixel pitch Scanning Frequency Horizontal : 31 kHz ~ 61 kHz (Automatic) Vertical : 55 Hz ~ 76 Hz Display Colors 16.2 Million colors Maximum Resolution Horizontal : 1280 Pixels Vertical : 1024 Pixels Input Video Signal Analog, 0.
2 Product Specifications 2-3 Pin Assignments Sync Type 15-Pin D-Sub Signal Cable Connector Separate Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 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) Sync Type Composite 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) Sync-on-green Red Green + H/V Sync.
2 Product Specifications 2-4 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 VESA(MJ17AS*/MJ17BS*/ VESA MJ19AS*/MJ19BS*) (MJ15AS*/MJ15BS*/MJ17AS*/MJ17BS*/MJ19AS*/MJ19BS*) IBM Mode VGA2/ 70 Hz VGA3/ 60 Hz 720 x 400 640 x 480 fH (kHz) 31.
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the MJ15AS*/MJ17AS*/MJ19AS*/MJ15BS*/MJ17BS*/MJ19BS* TFT-LCD 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 any metal instrument except provided jig to separate the cabinet. 3.
3 Disassembly and Reassembly 6. Remove 7 screws, 4 hexa screws from the boards and lift up the boards. ! Caution : When repairing panel only, disconnect just LVDS cable, Panel-Lamp / Wire marked in circle in the picture without removing the screws on board in order to lift the board up. 7. This picture is panel. 3-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures.
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: • Computer with Windows 95, Windows 98, or Windows NT. • MTI-2031 DDC MANAGER JIG 4-2 Automatic Color Adjustment To input video, use 16 gray or any pattern using black and white. 1. Select english for OSD language. 2.
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 (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 Softward 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.
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. 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.
4 Alignments and Adjustments Memo 4-4 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
5 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/D PBA • 5V develop but no screen: Main PBA • 5V does not develop: I/D PBA 4.
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. • 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.
5 Troubleshooting 5-2-1 No Video (ANALOG) Check signal cable connection and power. No 1 X400 oscillate properly? Replace or check related circuit. Yes Is there R, G, B input at R100, R101 and R103? No Check input part. Yes Is there Hsync, Vsync waveform 2 3 No Check IC400 and related circuit. at Pin 100, 1 of IC 400? Yes Is there Hsync, Vsync waveform 2 3 No Check IC200 and related circuit.
5 Troubleshooting WAVEFORMS 1 2 3 5-4 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
5 Troubleshooting 5-2-2 No Video (DIGITAL) Check signal cable connection and power. No 1 X400 oscillate properly? Replace or check related circuit. Yes Is there R, G, B input at 4 No 6 5 Check input part. R110, R112, R114, R111, R113 and R115? Yes Is there waveform No 7 Check input part. at R11, R117? Yes Does the output signal appear at Pin 17~20, 22~27 of CN400? No Check IC400 and related circuit.
5 Troubleshooting WAVEFORMS 1 2 3 4 5 6 7 5-6 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
6 Exploded View and Parts List ❈ You can search for updated part codes through ITSELF web site. URL : http://itself. sec. samsung.co.
6 Exploded View & Parts List 6-2 MJ15BS* 6-2 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
6 Exploded View & Parts List 6-3 MJ17AS* MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS* 6-3
6 Exploded View & Parts List 6-4 MJ17BS* 6-4 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
6 Exploded View & Parts List 6-5 MJ19AS* MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS* 6-5
6 Exploded View & Parts List 6-6 MJ19BS* 6-6 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
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 MJ15AS* Main PCB Parts Level Loc. No. Code No.
7 Electrical Parts List Level 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7-2 Loc. No.
7 Electrical Parts List Level Loc. No. Code No.
7 Electrical Parts List 7-1-2 MJ15AS* Others Level Loc. No. Code No. 2 3 3 3 3 3 3 BN91-00785H 0203-001598 6001-000125 6003-000117 BN39-00244A BN39-00507A BN39-00523B CIS SH/COV+PAN SH/COV+BRKT/PCB CIS CIS CIS 3 BN96-01058A CIS 2 3 BN92-00709A BN68-00614A 2 Description Specification Remarks ASSY SHIELD TAPE-FILAMENT SCREW-MACHINE SCREW-TAPTITE CBF SIGNAL LEAD CONNECTOR LEAD CONNECTOR MJ15BS/GS15MS/MJ15AS #8915,0.
7 Electrical Parts List Level Loc. No. Code No. Description Specification Remarks 4 4 4 3711-004712 6003-000117 6003-000117 CN600 IP/PCB+BRKT/PCB M/PCB+BRKT/PCB CONNECTOR-HEADER SCREW-TAPTITE SCREW-TAPTITE BOX,9P,1R,2mm,STRAIGHT,SN BH,+,B,M3,L6,ZPC(YEL),SWRCH18A BH,+,B,M3,L6,ZPC(YEL),SWRCH18A SA SNA SNA 4 5 5 BN97-00354K 0903-001347 BN82-00114L MICOM IC200 CIS ASSY MICOM IC-MICROCONTROLLER A/S MICOM GS17VS NT68F63GL,8Bit,PLCC,44P,653MIL,12MHz,ST,-,PLASTIC,5.
7 Electrical Parts List Level 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7-6 Loc. No.
7 Electrical Parts List Level 5 5 5 5 5 5 5 5 5 5 5 Loc. No. 2007-000090 2007-000090 2007-000074 2007-000090 2801-003773 0403-001411 0403-001411 0403-001411 0403-001411 0403-001411 0403-001411 Code No.
7 Electrical Parts List Level Loc. No. Code No.
7 Electrical Parts List Level 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Loc. No.
7 Electrical Parts List Level 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7-10 Loc. No.
7 Electrical Parts List 7-3-2 MJ19AS* Others Level Loc. No. Code No. 2 BN90-00329T - 3 BN96-01193B STD 2 3 BN90-00641D 6003-000337 3 4 4 Description Specification Remarks ASSY STAND MJ17ASAB/*,BK07,PIVOT SNA ASSY STAND P-PIVOT Matisse17/19,ABS HB,BK07 SNA C/R+STD ASSY COVER REAR SCREW-TAPTITE MJ19AS BH,+,S,M4,L10,ZPC(BLK),SWRCH18 SNA SNA BN96-01055B BN61-00377A BN63-01215B C/R C/R C/R ASSY COVER P-REAR BRACKET-VESA COVER-REAR MJ19AS,ABS HB,BK07 GOYA19(193V),SECC,T1.
7 Electrical Parts List 7-4 MJ15BS*/MJ17BS*/MJ19BS* Different Circuit Part List Loc.
MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS* (ON)+ 5V + 0~ 3.
8-2 (ON)+ 5V + 0~ 3.
10 PCB Layout 10-1 MJ15AS* ANALOG PCB Loc. No. Description X Y 60.5 78.3 73.6 68.0 10.5 107.1 17.1 16.0 12.3 12.2 12.4 46.1 11.3 69.6 55.0 110.7 96.6 95.2 56.0 27.5 17.4 12.8 14.0 12.9 30.9 8.5 46.9 55.8 35.5 56.
10 PCB Layout 10-2 MJ15BS* DIGITAL PCB Loc. No. Description X Y 60.5 78.3 43.4 73.6 43.3 68.0 37.1 31.0 24.4 9.0 13.5 37.2 31.1 24.5 23.5 49.2 10.5 107.1 17.1 16.0 12.3 14.0 12.2 19.6 12.4 19.9 19.9 19.9 26.2 14.6 14.0 14.0 14.0 25.5 22.3 46.1 11.3 69.6 15.8 55.0 110.7 11.0 96.6 95.2 56.0 27.5 17.4 12.8 23.6 14.0 12.9 9.6 30.9 8.5 46.9 55.8 35.5 56.1 7.0 21.
10 PCB Layout 10-3 MJ17AS*/MJ19AS* ANALOG PCB Loc. No. Description X Y DIODE D100 D101 D103 D105 D600 ZD200 ZD600 DIODE-ZENER DIODE-SWITCHING DIODE-SWITCHING DIODE-SWITCHING DIODE-RECTIFIER DIODE-ZENER DIODE-ZENER 60.5 78.3 73.6 68.0 10.5 107.1 17.1 16.0 12.3 12.2 12.4 46.1 11.3 69.6 55.0 110.7 96.6 95.2 56.0 27.5 17.4 14.0 12.9 30.9 8.5 46.9 55.8 35.
10 PCB Layout 10-4 MJ17BS*/MJ19BS* DIGITAL PCB Loc. No. Description X Y 60.5 78.3 43.4 73.6 43.3 68.0 37.1 31.0 24.4 9.0 13.5 37.2 31.1 24.5 23.5 49.2 10.5 107.1 17.1 16.0 12.3 14.0 12.2 19.6 12.4 19.9 19.9 19.9 26.2 14.6 14.0 14.0 14.0 25.5 22.3 46.1 11.3 69.6 15.8 55.0 110.7 11.0 96.6 95.2 56.0 27.5 17.4 23.6 14.0 12.9 9.6 30.9 8.5 46.9 55.8 35.5 7.0 21.
MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS* G_GND CN101 VCC LED_GRN NC Key 2 Key 1 GND VSYNC_IN SCL_DDC GND SDA_DDC HSYNC_IN B_GND NC CHK_DSUB CN102 RED_IN GREEM_IN BLUE_IN GND GND R_GND RXC- RXC+ GND NC GND NC RX0+ RX0- +5V_DDC DDC_POWER CHK_DVI GND NC NC NC RX1RX1+ +14V +14V GND DDC_SDA RX2RX2+ GND NC NC DDC_SCL RxO2RxO1+ RxO1RxO0+ RxO0+5v +5v +5v RxOCGND RxO2+ RxE0RxO3+ RxO3RxOC+ RxE1GND RxE0+ GND RxE1+ RxE3+ RxE3GND RxEC+ RxECGND RxE2+ RxE2- NC GND 9 Wiring Diagram CN4
9 Wiring Diagram Memo 9-2 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*
11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. +5V_IN 1/16W 4.7K 4.7K 4.7K R210 R211 4.7K R207 R212 4.7K 4.7K R209 4.7K R208 R206 4.7K 4.7K R205 10K 10K R203 470 R214 10K 4.7K R204 4.7K R217 4.7K R246 R202 R220 Q0 Q1 10 11 PC4 PC5 HSYNCI PC3 PC2 VSYNCI 100 1/16W HSYNC_IN_A CHK_DSUB CHK_DVI 4.
11 Schematic Diagrams 1 2 3 5 6 7 11-2 4 MJ15AS*/MJ17AS*/MJ19AS*/ MJ15BS*/MJ17BS*/MJ19BS*