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5 Troubleshooting

5-1

5 Troubleshooting

Notes:

1. Before troubleshooting, setup the PC’s display as below.

• Resolution: 1280 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. If you push and hold the “ (Enter/Auto)” button for more than 5 seconds, the monitor

automatically returns to the factory preset.

5-1-1 No Power

When Pin 4 of CN600 is 0V

does proper DC 13V, 5V

appear at Pin 1, 2 and 6, 7 of

CN600 separately?

Change IP Board.

Check Function Ass’y.

Yes

Yes

No

When Pin 3 of IC602 is DC 5V

does proper DC 3.3V appear at

Pin 4 of IC602?

Check IC602 and related

circuit.

Yes

No

When Pin 4 of IC600 is DC 0.3V

does proper DC 3.3V appear at

Pin 5 and 6 of IC600?

Check IC600 and related

circuit.

No

Yes

When Pin 2, 3 of IC601 is

DC 3.3V does proper DC 4.3V appear

at Pin 1 of IC601?

Check IC601 and related

circuit.

No

Yes

When Pin 2, 3 of IC601 is

DC 4.3V does proper DC 2.5V appear

at Pin 4 of IC601?

Check IC601 and related

circuit.

No

*

* 0V means power on state.

When the monitor work well except DPMS and power switch off,
0V should be applied to number 4 of CN600.

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Содержание 913V - SyncMaster - 19" LCD Monitor

Страница 1: ... MONITOR CONTENTS 1 Precautions 2 Product Specifications 3 Disassembly Reassembly 4 Alignments Adjustments 5 Troubleshooting 6 Exploded View Parts List 7 Electrical Parts List 8 Block Diagram 9 Wiring Diagram 10 PCB Layout 11 Schematic Diagrams 12 Panel Description ...

Страница 2: ...Circuit 4 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 cabinets screwheads and control shafts The current measured should not exceed 0 5 milliamp Reverse the power plug ...

Страница 3: ...rn the power switch ON Connect an insulation resistance meter 500 V to the blades of the AC plug The insulation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 6 Always connect a test instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the instrument s ground lead last 6 D...

Страница 4: ...c Composite H V Level TTL level V high 2 0 V V low 0 8 V Sync on Green 0 25 V Maximum Pixel Clock rate 135 MHz Active Display Horizontal Vertical 338 3 mm 270 3 mm AC power voltage Frequency AC 90 264 Volts 60 50 Hz 3 Hz Power Consumption 34W normal Dimensions Set W x D x H 16 9 x 2 4 x 14 0 Inches Without Stand 16 9 x 7 7 x 16 9 Inches With basic Stand Package 18 2 x 5 6 x 17 8 Inches Weight Set ...

Страница 5: ...ND 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 Blue GND DDC Return GND GND R GND G GND B DDC Power Input 5V Self Raster GND Bi Dr Data SDA Not Used Not Used DDC Clock SCL Sync on green ...

Страница 6: ...sitive Separate fH kHz A µsec B µsec C µsec D µsec E µsec fV Hz O msec P msec Q msec R msec S msec Clock Freq MHz Polarity H Sync V Sync Remark IBM 640 75 Hz 640 x 480 800 60 Hz 800 x 600 800 75 Hz 800 x 600 1024 60 Hz 1024 x 768 1024 75 Hz 1024 x 768 VGA2 70 Hz 720 x 400 VGA3 60 Hz 640 x 480 Table 2 1 Timing Chart 31 469 31 778 3 813 1 589 26 058 0 318 59 940 16 683 0 064 0 794 15 761 0 064 26 17...

Страница 7: ...Memo 2 Product Specifications 2 4 ...

Страница 8: ... except provided jig to separate the cabinet 3 R Cover opening jig BH81 00001A 1 Place monitor face down on cushioned table Remove 4 screws from grip on the stand and remove the stand 2 Remove 2 screws from the rear cover and insert the opening jig into the grooves at each side and press until it clicks 3 Lift the rear cover and remove 1 screws from the shield 4 Lift up the panel shield and remove...

Страница 9: ...e 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 ...

Страница 10: ...n Replacing Panel 1 Adjust brightness and contrast to 0 Then press the Enter Auto key for 5 second Service function OSD will appear on screen 2 Press the key to place the cursor on the panel Press the menu key for 5 seconds 4 5 OSD Adjustment When Replacing Lamp Only 1 Adjust brightness and contrast to 0 Then press the Enter Auto key for 5 seconds Service function OSD will appear on the screen 2 P...

Страница 11: ...ervice function OSD you will have to power off Figure 2 The example of service function OSD Figure 3 Panel Information Softward Version Checksum The service function OSD is based on a grid of 29 rows x 12 columns The service function OSD consists of panel information software version and MICOM checksum 4 6 2 How to Control Service Function OSD 1 With the panel selected on OSD whenever you press th...

Страница 12: ... 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 5 6 4 6 4 How to Control Service Function OSD In the case of Upper Lamp or Lower Lamp change After changeing the Upper Lamp or Lower Lamp 1 Select the Upper Lamp or Lower Lamp 2 Press the Menu key within an 5 seconds Then Ch No and ti...

Страница 13: ...4 Alignments and Adjustments 4 4 Memo ...

Страница 14: ...n 4 of CN600 is 0V does proper DC 13V 5V appear at Pin 1 2 and 6 7 of CN600 separately Change IP Board Check Function Ass y Yes Yes No When Pin 3 of IC602 is DC 5V does proper DC 3 3V appear at Pin 4 of IC602 Check IC602 and related circuit Yes No When Pin 4 of IC600 is DC 0 3V does proper DC 3 3V appear at Pin 5 and 6 of IC600 Check IC600 and related circuit No Yes When Pin 2 3 of IC601 is DC 3 3...

Страница 15: ...Check Stereo Cable Yes No When Pin 1 of IC502 is DC 13V does proper DC 6V appear at Pin 3 of IC502 Check IC502 and related circuit Yes No Does the signal appear at Pin 4 6 of IC500 Check Audio PBA and Sound Source No Yes Does the signal appear at Pin 9 12 13 and 16 of IC500 Check IC500 and related circuit No Yes Check Specker and Audio Ass y ...

Страница 16: ...es No Is there Hsync Vsync waveform at Pin 100 1 of IC 400 Check IC400 and related circuit No Yes Is there Hsync Vsync waveform at Pin 43 44 of IC 200 Check IC200 and related circuit No Yes Does the output signal appear at Pin 17 20 22 27 of CN400 Check IC400 and related circuit No Yes There are DC 5V at Pin 1 2 and 3 of CN400 Check the panel EN signal at R222 and BL_EL signal at R603 No Yes Repla...

Страница 17: ...Memo 5 Troubleshooting 5 4 ...

Страница 18: ...6 1 6 Exploded View and Parts List You can search for updated part codes through ITSELF web site URL http itself sec samsung co kr ...

Страница 19: ...Memo 6 Exploded View Parts List 6 2 ...

Страница 20: ...ohm 5 1 10W TP 1608 1 SA 4 R227 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 SA 4 R502 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 SA 4 R503 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 SA 4 R223 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 SA 4 R224 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 SA 4 R225 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 SA 4 R226 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 SA 4 R...

Страница 21: ...75ohm 1 1 10W TP 1608 1 SA 4 C224 2203 000189 C CER CHIP 100nF 80 20 25V Y5V TP 1608 1 SA 4 C116 2203 000236 C CER CHIP 0 1nF 5 50V C0G 1608 1 SA 4 C106 2203 000257 C CER CHIP 10nF 10 50V X7R 1608 1 SA 4 C221 2203 000257 C CER CHIP 10nF 10 50V X7R 1608 1 SA 4 C222 2203 000257 C CER CHIP 10nF 10 50V X7R 1608 1 SA 4 C417 2203 000257 C CER CHIP 10nF 10 50V X7R 1608 1 SA 4 C204 2203 000426 C CER CHIP ...

Страница 22: ... GP TP 6 6x6 6x5 4 1 SA 4 C609 2402 001042 C AL SMD 100uF 20 16V GP TP 6 6x6 6x5 4 1 SA 4 C611 2402 001042 C AL SMD 100uF 20 16V GP TP 6 6x6 6x5 4 1 SA 4 C612 2402 001042 C AL SMD 100uF 20 16V GP TP 6 6x6 6x5 4 1 SA 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 SA 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 SA 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 SA 4 X400 2801 003773 CRYSTAL S...

Страница 23: ...4 001209 SWITCH TACT 12VDC 50MA 250GF 4 5X4 5X1 5 1 SA 4 SW2 3404 001209 SWITCH TACT 12VDC 50MA 250GF 4 5X4 5X1 5 1 SA 4 SW3 3404 001209 SWITCH TACT 12VDC 50MA 250GF 4 5X4 5X1 5 1 SA 4 SW4 3404 001209 SWITCH TACT 12VDC 50MA 250GF 4 5X4 5X1 5 1 SA 4 SW5 3404 001209 SWITCH TACT 12VDC 50MA 250GF 4 5X4 5X1 5 1 SA 4 CN906 3711 004934 CONNECTOR HEADER BOX 5P 1R 1 25MM SMD A 1 SA 4 M0119 BN41 00436A PCB ...

Страница 24: ...TAND HOLDER GS17VS ABS HB BK07 1 SNA 3 M0412 BN61 01060A STAND BASE GS19VS ABS HB BK07 1 SNA 3 STAND BASE BN61 01235A SUPPORT BRKT BASE MJ19AS BS SECC T1 6 1 SNA 3 CIS3 BN68 00473P MANUAL INSTALL Goya2 Stand Guide SyncMas 1 SNA 2 M0045 BN96 02001S ASSY ACCESSORY BI19BSSBV EDC 1 SA 3 T0268 3903 000042 CBF POWER CORD DT EU FP3 YES IEC320 C13 1 SA 3 T0524 6902 000110 BAG PE LDPE T0 05 L356 W240 TRP 2...

Страница 25: ...7 Electrical Parts List 7 6 Memo ...

Страница 26: ...8 1 8 Block Diagram 8 1 ANALOG Blcok Diagram R G B H sy nc V sy nc A DC IM A GE SCA L ER L V DS SE7889 M ICOM 12MHz L C D P A N E L S M P S 13V 13V INV ERT ER IP BOARD 5V ON 5V 0 3 3 5V ...

Страница 27: ...8 Block Diagrams 8 2 Memo ...

Страница 28: ...9 Wiring Diagram 9 1 9 Wiring Diagram ...

Страница 29: ...Memo 9 Wiring Diagram 9 2 ...

Страница 30: ...WITCHING 68 0 12 4 D600 DIODE RECTIFIER 10 5 46 1 ZD200 DIODE ZENER 107 1 11 3 ZD600 DIODE ZENER 17 1 69 6 IC105 DIODE TVS 55 0 14 0 IC106 DIODE TVS 110 7 12 9 IC200 IC MICROCONTROLLER 96 6 30 9 IC201 IC EEPROM 95 2 8 5 IC400 IC LCD CONTROLLER 56 0 46 9 IC600 FET SILICON 27 5 55 8 IC601 IC DUAL VOLTAGE REGULATOR 17 4 35 5 Loc No Description X Y DIODE IC ...

Страница 31: ...10 PCB Layout 10 2 Memo ...

Страница 32: ...100 R237 slcon9p C204 22pF 50V MO R208 4 7K 1 16W 10K R131 15pF 50V MO C109 100nF 16V C404 MO 16V 100nF C125 100nF 25V MMBD4148SE A 1 B 2 C 3 C208 R121 100 D106 22ohm R112 1 10W R105 100 1 16W R130 1 16W 510 C114 100nF 16V 100 R132 C123 100nF 16V MO 100 R225 0 3 3V_MAIN R502 100nF 16V C407 100nF 1 C408 16V 390ohm R106 A 1 2 B 3 C R232 100 TP43 D103 MMBD4148SE C424 100nF 16V TP200 1 1 1 A 2 B 3 C U...

Страница 33: ...11 Schematic Diagrams 11 2 1 2 3 ...

Страница 34: ...u Suwon City Kyeonggi Do Korea 443 742 Printed in Korea P N BN82 http itself sec samsung co kr 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 ...

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