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Samsung SyncMaster 753 DFX, Service Manual

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Samsung SyncMaster 753 DFX Service Manual Download Page 25

5 Troubleshooting

5-10

AN17K*/AN17L*

5-1-17 Micom Failure

IC201 Pin 11 input voltage  is 5V?

IC201 Pin 13 and 14 inputs 

are right?

Check  C202, C203 and X201.

Yes

Yes

No

Check IC604.

No

IC201 Pin 18 input is right?

Check and replace IC201 and R206.

Yes

No

All in/output values are right?

Replace IC201.

Yes

No

Done

18

18

1.00 V (IC201, #13, 14)

CH1 P-P = 1.00 V    CH1 RMS = 2.108V

WAVEFORMS

CONFIDENTIAL

Summary of Contents for SyncMaster 753 DFX

Page 1: ...VICE COLOR MONITOR CONTENTS 1 Precautions 2 Product Specifications 3 Disassembly Reassembly 4 Alignment Adjustments 5 Troubleshooting 6 Exploded View Parts List 7 Electrical Parts List 8 Block Diagram...

Page 2: ...rotective devices such as nonmetallic control knobs insulating materials cabinet backs adjustment and compartment covers or shields isolation resistor capacitor networks mechanical insulators etc 3 Le...

Page 3: ...n each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 7 Never defeat any of the B voltage interlocks Do not apply AC power to the unit or any of its ass...

Page 4: ...Hz or 50 Hz 3 Hz Power Consumption 90 Watt max Dimensions W x D x H Net Gross AN17KS AN17KT 15 7 x 16 2 x 15 7 Inches 398 x 412 x 400 mm 20 4 x 22 8 x 18 4 Inches 517 x 580 x 468 mm AN17LS 15 7 x 16 2...

Page 5: ...le Type Sync Type Pin No Macintosh Separate 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Red Green Blue N C DDC Return GND R GND G GND B N C GND Sync Self raster N C DDC Data H Sync V Sync DDC Clock GND R Red...

Page 6: ...85 Hz 800 x 600 1024 85 Hz 1024 x 768 VGA3 60 Hz 640 x 480 VGA2 70 Hz 720 x 400 31 469 31 778 3 813 1 907 25 422 0 636 59 940 14 268 0 064 1 048 15 253 0 318 25 175 Negative Positive Separate 31 469 3...

Page 7: ...2 Product Specifications 2 4 AN17K AN17L Memo CONFIDENTIAL...

Page 8: ...il makes a tak sound 2 grooves Left and Right Make sure each snap is disengaged 5 Pull the Rear Cover up and away from the monitor AN17K AN17L 3 1 3 Disassembly and Reassembly This section of the serv...

Page 9: ...connector on the Main PCB 5 Using the jig release the snaps 2 connecting the Front Cover and the PCB then lift up the bottom to separate the two shields 6 Disconnect the tilt connector at the CN304 co...

Page 10: ...t may be necessary for adjustment procedures 4 1 2 a DISPLAY CONTROL ADJUSTMENT 1 Non metallic screwdriver 1 5 2 5 3 mm 2 Non metallic screwdriver 1 5 2 5 3 mm 3 Digital Multimeter DMM or Digital Volt...

Page 11: ...e 4mm Run the All Mode save in the Right Menu Caution Do not Run the All mode Save at the other scannig times except for 1024x768 68kHz 85Hz 4 2 3 b VERTICAL SIZE ADJUSTMENT CONDITIONS Scanning freque...

Page 12: ...menu to optimize the image 4 2 7 Parallelogram Adjustment CONDITIONS Scanning Frequency 68 kHz 85 Hz Display image Crosshatch pattern Brightness Maximum Contrast Maximum Use control bar after selecti...

Page 13: ...for 9300K 2 Adjust the luminance of the back raster to between 0 5 to 0 7 ft L using control bar after selecting GREEN CUTOFF in the menu 3 Use control bar after selecting BLUE CUTOFF in left menu to...

Page 14: ...0 313 0 02 y 0 329 0 02 4 3 3 Luminance Uniformity Check Luminance is considered uniform only if the ratio of lowest to highest brightness areas on the screen is not less than 7 5 10 CONDITIONS Scann...

Page 15: ...een pattern AN17K Optimum setting x 0 276 0 015 y 0 596 0 015 AN17L Optimum setting x 0 285 0 015 y 0 600 0 015 5 Repeat steps 4 and 5 using a red pattern and then again using a blue pattern Table 4 4...

Page 16: ...5 1 1 No Power Supply Chirping noise exists Check and replace IC601 Check and replace D601 and FH1 Done No Yes Repeating start Check and replace D606 No Yes IC601 Pin 1 waveform is right Check and re...

Page 17: ...blinks Check IC201 Pin 40 Yes No 12 V line off Check IC201 Pin 5 Pin 6 and Q610 Q602 operation Yes No Yes Q602 Base voltage exists Check IC201 Pin 5 Check and replace Q602 and IC201 No IC601 Pin 1 out...

Page 18: ...n 28 B_DRV of IC401 Check IC401 Check 12 V line Yes No Does DC 12V appear at Pin 29 of IC401 Yes No 3 5 1 4 S Correction Failure S1 S3 signals are correct at each frequency block Check S1 S3 signal Ch...

Page 19: ...RV DAC values Check some parts around Q402 IC401 Pin 14 16 Yes No Check and replace IC401 No 5 1 7 Abnormal H_Size IC401 Pin 24 output duty varies with different B offset DAC values Q404 Collector wav...

Page 20: ...es with different DAC values No Replace IC401 No 7 5 1 10 Tilt Failure IC201 Pin 20 output duty varies with different DAC values Q611 Base output varies with different DAC values Check and replace Q61...

Page 21: ...301 Pin 6 output exists Check and replace components around IC301 Yes No Check DY connector connection 8 9 5 1 12 V Size or Position Variation Failure IC401 Pin 23 output varies with different DAC val...

Page 22: ...e 10 3 IC101 Pin 8 input exists and varies with different patterns Check and replace IC101 Input full white pattern to monitor Yes No T501 Pin 8 output exists Check and replace T501 Yes No IC201 Pin 2...

Page 23: ...eplace the IC401 No T502 Pin 6 input is right Check and replace C432 Yes No T502 Pin 1 output is right Replace the T502 Yes No Check the connection between FBT Focus pin and CRT Socket PCB 13 14 12 12...

Page 24: ...e right Check 12V 80V line Check and replace IC102 Yes No Cathode DC levels are right Check 80V line Check and replace IC104 Yes No G2 voltage is right Check G2 wire CRT Socket board and FBT Change CR...

Page 25: ...C201 Pin 13 and 14 inputs are right Check C202 C203 and X201 Yes Yes No Check IC604 No IC201 Pin 18 input is right Check and replace IC201 and R206 Yes No All in output values are right Replace IC201...

Page 26: ...1 Pin 29 and 30 inputs are right Check IC201 Pin 41 and 42 Yes No Check and replace IC102 Yes Done 19 20 Check CN102 and connector Ass y Yes IC101 Pin 18 21 and 24 outputs are right Check and replace...

Page 27: ...you push the S W button Yes Check the button SW201 SW204 No Check IC201 RL601 operation is right Q601 base input is right Check and replace Q601 No No Yes Check D coil and TH601 Yes IC201 Pin 4 output...

Page 28: ...voltage high voltage and R G B cathode voltage No No Yes Refer to 5 2 2 Shut down Yes 5 2 2 Shut Down Blinking LED s Scan failure Check horizontal vertical deflection system and check power supply se...

Page 29: ...es No Check signal generator No Proper DC voltage to all cathodes Check IC101 Pin 17 20 and 23 Check IC104 Yes Yes No G2 voltage is right Check T501 and D502 D512 No Heater voltage is right Check D608...

Page 30: ...12 No V_FLB pulse at Collector of Q303 Check Q303 Done Yes No Valid the Vertical pulse on CRT Socket G1 Check CN102 and CN201 Yes No Check white balance adjustment 5 2 4 Visible Retrace 23 24 23 5 00V...

Page 31: ...ls at Pin 28 and 29 of IC201 are right Check IC201 Yes Yes No Check Video Cable No Signals at Pin 1 and 2 of IC401 are right Check IC401 Check circuits on Main board Yes Done No Check input signals Pi...

Page 32: ...AN17K AN17L 5 17 Convergence is now within spec Readjust convergence No Done Yes Convergence is now within spec Done Change CRT and readjust convergence No Done Yes Adjust convergence 5 2 6 Misconverg...

Page 33: ...focus change Yes Dynamic focus circuit is right Refer to 5 1 15 Dynamic Focus Failure Replace the CRT and verify focus Yes No Adjust focus VR of FBT 5 2 7 Poor Focus 5 2 8 Purity Failure Purity is cor...

Page 34: ...AN17K AN17L 6 1 6 Exploded View and Parts List 6 1 1 AN17KS CONFIDENTIAL...

Page 35: ...6 Exploded View Parts List 6 2 AN17K AN17L CONFIDENTIAL 6 1 2 AN17KS Front 1 2 3 4 5 9 6 8 7...

Page 36: ...6 Exploded View Parts List AN17K AN17L 6 3 CONFIDENTIAL 6 2 1 AN17KT...

Page 37: ...6 Exploded View Parts List 6 4 AN17K AN17L CONFIDENTIAL 6 2 2 AN17KT Front 2 3 1 4 5 6 8 10 9...

Page 38: ...6 Exploded View Parts List AN17K AN17L 6 5 CONFIDENTIAL 6 3 1 AN17LS...

Page 39: ...6 Exploded View Parts List 6 6 AN17K AN17L CONFIDENTIAL 6 3 2 AN17LS Front 2 3 1 4 5 7 8 10 9...

Page 40: ...6 Exploded View Parts List AN17K AN17L 6 7 CONFIDENTIAL 6 4 1 AN17LT...

Page 41: ...6 Exploded View Parts List 6 8 AN17K AN17L CONFIDENTIAL 6 4 2 AN17LT Front 2 3 1 4 6 5 8 10 9...

Page 42: ...ST D608 0402 001456 DIODE RECTIFIER UG2D 200V 2A DO 204AC BK D609 0402 000005 DIODE RECTIFIER 31DF4 400V 3A DO 201AD BK D611 0402 001456 DIODE RECTIFIER UG2D 200V 2A DO 204AC BK FUSE 3601 001302 FUSE...

Page 43: ...GP TP 5x11 5 C209 2401 002075 C AL 4 7uF 20 50V GP TP 5x11 5 C210 2401 000603 C AL 1uF 20 50V GP TP 5x11 5 C211 2201 000146 C CERAMIC DISC 0 1nF 5 50V SL TP 5x3 5 5 C212 2201 000017 C CERAMIC DISC 1n...

Page 44: ...100V TP 9 5x12 5mm 5mm C512 2201 000152 C CERAMIC DISC 10NF 80 20 1KV Y5V TP 20 4 5 C513 2201 000291 C CERAMIC DISC 1nF 10 500V Y5P TP 7 5x3 5 5 C514 2201 000469 C CERAMIC DISC 0 33nF 10 500V Y5P TP...

Page 45: ...ODE RECTIFIER 1N4007GP 1000V 1A DO 41 TP D403 0402 000006 DIODE RECTIFIER 1N4007GP 1000V 1A DO 41 TP D404 0402 000006 DIODE RECTIFIER 1N4007GP 1000V 1A DO 41 TP D405 0402 000208 DIODE RECTIFIER EK 04...

Page 46: ...EY508 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY509 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY510 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY601 6042 000001 EYELET ID2...

Page 47: ...NESS 52MM AWG22 0 6PI AWG22 0 JP33 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP35 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP36 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP37 BH3...

Page 48: ...00 Q302 0501 000581 TR SMALL SIGNAL 2N3906 PNP 625mW TO 92 TP 100 300 Q303 0501 000586 TR SMALL SIGNAL KSC945 NPN 250mW TO 92 TP 120 240 Q401 0501 000586 TR SMALL SIGNAL KSC945 NPN 250mW TO 92 TP 120...

Page 49: ...TP 2 4X6 4MM R308 2001 000109 R CARBON S 470OHM 5 1 2W AA TP 2 4X6 4MM R309 2004 005002 R METAL 1 2ohm 2 1 2W AA TP 3 3x9 0mm R310 2004 001005 R METAL 5 1Kohm 1 1 4W AA TP 2 4x6 4m R311 2004 000947 R...

Page 50: ...1 8W AA TP 1 8X3 2MM R453 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM R454 2003 000650 R METAL OXIDE S 330ohm 5 2W AA TP 4x12mm R455 2004 001349 R METAL 91Kohm 1 1 4W AA TP 2 4x6 4mm R461 2004...

Page 51: ...HM 5 1 2W AA TP 2 4X6 4MM R618 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM R619 2003 000471 R METAL OXIDE S 10ohm 5 2W AA TP 4x12mm R620 2001 000508 R CARBON 220KOHM 5 1 8W AA TP 1 8X3 2MM R621...

Page 52: ...0P PLASTIC 35V 15W 20TO 70C ST VERTICAL DEFLECTION CIS 6006 001008 SCREW ASS Y MACH WSP BH M3 L10 ZPC YEL SWRCH SNA CIS 6021 000118 NUT HEXAGON 1C M3 ZPC YEL SM20C SNA CIS BH62 00050A HEAT SINK V IC A...

Page 53: ...80 20 500V Y5V TP 13 5x4mm 5 C106 2202 002009 C CERAMIC MLC AXIAL 100nF 80 20 50V Y5V TP 2 3X3 C107 2401 003034 C AL 220uF 20 16V WT TP 8x11 5 5 C108 2401 000049 C AL 47uF 20 100V WT TP 10x16 5 C113...

Page 54: ...ET ID2 2 OD2 7 L3 1 SN BSS3 E EH SNA EY4 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY5 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY6 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SN...

Page 55: ...AA TP 1 8X3 2MM RG08 2001 000325 R CARBON 120OHM 5 1 8W AA TP 1 8X3 2MM RG09 2001 000962 R CARBON 75KOHM 5 1 4W AA TP 2 4X6 4MM RG10 2003 002281 R METAL OXIDE S 120OHM 5 1W AF TP 3 3X9MM RG15 2001 000...

Page 56: ...x3 4mm S SW203 3404 000243 SWITCH TACT 15V 20mA 160gf 50gf 6x3 4mm S SW204 3404 000243 SWITCH TACT 15V 20mA 160gf 50gf 6x3 4mm S CN2 BH39 00255A CBF HARNESS PN17HT UL1007 26 UL CSA 2P 150MM BLU WHT AW...

Page 57: ...68 00376J MANUAL AN_QUICKSETUPGUIDE SYNCMASTER E F S G P I 14LANGS W W MOJO100G 298 420 ACCESSORY BH68 00489A MANUAL RUSSIAN W CARD SER RUSSIAN RUSSIA MOJO100G SNA ACCESSORY BH68 70418A CARD EU BLOC W...

Page 58: ...D07 15 1 5KV 1 5A TP D409 0402 001295 DIODE RECTIFIER GUR460L 5700 600V 4A DO 201AD BK D601 0402 000103 DIODE BRIDGE D2SBA60 600V 1 5A SIP 4 ST D608 0402 001456 DIODE RECTIFIER UG2D 200V 2A DO 204AC B...

Page 59: ...450 CORE FERRITE BEAD AA 45OHM 3 5X0 6X5 7MM 50MA TP SN 20 UI2000 SNA C201 2401 000010 C AL 220uF 20 16V GP 6 3x11mm 2 C202 2201 000389 C CERAMIC DISC 0 022nF 5 50V NP0 TP 5x3 5 C203 2201 000389 C CER...

Page 60: ...MIC DISC 100nF 80 20 50V Y5V TP 8x3 5 C504 2201 000471 C CERAMIC DISC 0 33nF 10 50V Y5P TP 4x3 5 5 C505 2401 000059 C AL 220nF 20 50V GP 5x11 5 C508 2401 002267 C AL 2 2uF 20 250V GP TP 8x11 5 5 C509...

Page 61: ...IODE RECTIFIER UF4004 400V 1A DO 41 TP D302 0401 000005 DIODE SWITCHING 1N4148 100V 200mA DO 35 TP D303 0402 000546 DIODE RECTIFIER TVR10G 400V 1 0A DO 41 TP D401 0402 000274 DIODE RECTIFIER UF4004 40...

Page 62: ...A EY505 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY506 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY507 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA EY508 6042 000002 EYELET ID...

Page 63: ...NESS 52MM AWG22 0 6PI AWG22 0 JP3 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP30 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP31 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP32 BH39...

Page 64: ...40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 JP9 BH39 40305U CBF HARNESS 52MM AWG22 0 6PI AWG22 0 MP1 0_MAIN BH41 00215A PCB AN17K FR1 1 1 6T 247 247 MAIN Q301 0501 000122 TR SMALL SIGNAL 2N3904 NPN 6...

Page 65: ...8W AA TP 1 8X3 2MM R304 2004 000344 R METAL 15Kohm 1 1 4W AA TP 2 4x6 4mm R306 2004 000899 R METAL 4 7Kohm 1 1 4W AA TP 2 4x6 4m R307 2001 000016 R CARBON S 1OHM 5 1 2W AA TP 2 4X6 4MM R308 2001 00010...

Page 66: ...N S 68OHM 5 1 2W AA TP 2 4X6 4MM R450 2004 000327 R METAL 150Kohm 1 1 4W AA TP 2 4x6 4m R451 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM R452 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM...

Page 67: ...560ohm 5 1W AA TP 4 3x12mm R616 2001 000577 R CARBON 2KOHM 5 1 8W AA TP 1 8X3 2MM R617 2001 001048 R CARBON S 1 2OHM 5 1 2W AA TP 2 4X6 4MM R618 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM R619...

Page 68: ...SILICON G746 SNA CIS 1204 001508 IC VERTICAL DEF KA2142 SIP 10P PLASTIC 35V 15W 20TO 70C ST VERTICAL DEFLECTION CIS 6006 001008 SCREW ASS Y MACH WSP BH M3 L10 ZPC YEL SWRCH SNA CIS 6021 000118 NUT HEX...

Page 69: ...2375G C102 2401 000603 C AL 1uF 20 50V GP TP 5x11 5 C103 2401 000037 C AL 470uF 20 16V GP TP 8x11 5 5 C105 2201 000019 C CERAMIC DISC 10nF 80 20 500V Y5V TP 13 5x4mm 5 C106 2202 002009 C CERAMIC MLC A...

Page 70: ...SS244 250V 625mA DO 34 TP DR04 0401 000004 DIODE SWITCHING 1SS244 250V 625mA DO 34 TP DR05 0401 000005 DIODE SWITCHING 1N4148 100V 200mA DO 35 TP EY1 6042 000002 EYELET ID1 5 OD2 L3 1 SN BSS3 E EH SNA...

Page 71: ...A TP 1 8X3 2MM RG05 2001 000702 R CARBON 39KOHM 5 1 8W AA TP 1 8X3 2MM RG07 2001 000411 R CARBON 18KOHM 5 1 8W AA TP 1 8X3 2MM RG08 2001 000325 R CARBON 120OHM 5 1 8W AA TP 1 8X3 2MM RG09 2001 000962...

Page 72: ...ER FRONT AQ17LS ABS V0 IV16 SNA CIS BH72 60491B CAP BOSS CGK5517 TPE 80 GRAY CDT SETTING SNA BH90 00342A ASSY COVER REAR AQ17LS ABS V0 IV16 SNA CIS BH72 00329A COVER REAR AQ17LS ABS V0 IV16 BH90 00343...

Page 73: ...BH92 00871D ASSY ACCESSORY AN17LS SNA UNIT ACCESSORY BH96 00117E ASSY ACCESSORY AN17LS7L EDC ACCESSORY 0203 000214 TAPE OPP MASKING OPP W50 CLR T0 05 W50 L400000 SNA ACCESSORY BH39 10007A CBF POWER C...

Page 74: ...AUSSING BLOCK RL601 UP DOWN BRIGHTNISS CONTRASTER PIN TRAP SIZE POSI DEGA LED POWER AC INPUT SOCKET CN601 LINE FILTER L601 SWITCHING TRANS T601 SECOND VOLTAGE FEED BACK CIRCUIT POWER OFF MODE CONTROL...

Page 75: ...Memo 8 Block Diagrams 8 2 AN17K AN17L CONFIDENTIAL...

Page 76: ...TILT H H NC H NC 1 2 3 4 TILT WHT 70 V IICCLK HS OUT OSD 5V GND GND 6 3 V G1 12 V VS OUT ACL IICDATA AFC 9 10 11 12 13 14 1 2 3 4 5 6 7 8 RED H BLUE H YEL V BROWN V H NC NC H FOCUS1 WHT FOCUS2 RED CN...

Page 77: ...9 PCB Diagrams 9 2 AN17K AN17L Memo CONFIDENTIAL...

Page 78: ...G S R311 R621 10K 1 8W IRF630B Q411 D406 D601 D2SBA60 1 2 3 4 1 8W 10K R632 12K 1 4W MF R506 B C514 330pF 500V D414 1N4148 BD601 4 7uF C461 13V_1 EYE1 5 EY506 1 50V E 6 3V_1 10V R551 240K 1 4W 12V KS...

Page 79: ...CH1 RMS 387 2V 7 1 00 V IC401 24 CH1 P P 1 00V CH1 RMS 3 008 V 8 500 V IC401 23 CH1 P P 500 V CH1 RMS 1 425 V 9 10 0 V IC301 6 CH1 P P 10 0 V CH1 RMS 5 06 V 10 2 00 V Q402 Gate CH1 P P 2 00 V CH1 RMS...

Page 80: ...18K 39K RR05 1 8W 560 R119 C161 100UF 16V B 75K 1 4W RR09 50V 100pF BD104 1N4148 DB02 C118 RG03 1 8W 560 R104 1 6W 100 RG15 1 2W 390 SPARK_RA SKB01 100uH L101 C152 100nF 50V MO MO 50V 100nF C106 RB08...

Page 81: ...H1 RMS 2 792V 17 20 0V IC102 9 10 11 CH1 P P 20 0V CH1 RMS 40 52V 21 1 00 V IC101 18 21 24 CH1 P P 1 00V CH1 RMS 2 580V 22 10 0 V R G B Video CH1 P P 10 0V CH1 RMS 17 02V 24 20 00V CRT Socket G1 CH1 P...

Page 82: ...416 Maetan 3Dong Paldal Gu Suwon City Kyungki Do Korea Printed in Korea 442 742 P N BH82 00005C 00 http www samsungmonitor com SyncMaster Worldwide http www samsung monitor com SyncMaster USA http ww...

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