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COLOR MONITOR

SERVICE MANUAL

Website:http://biz.LGservice.com

CAUTION

BEFORE SERVICING THE UNIT,
READ THE

SAFETY PRECAUTIONS

IN THIS MANUAL.

CHASSIS NO. : LM57A

MODEL:

L1753S (L1753S-BFQ.A**MQP,A**DQP)
L1953S (L1953S-BFQ.A**MQP)

*To apply the

MSTAR Chip

( ) **Same model for Service

Содержание Flatron L1753S

Страница 1: ...Website http biz LGservice com CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO LM57A MODEL L1753S L1753S BFQ A MQP A DQP L1953S L1953S BFQ A MQP To apply the MSTAR Chip Same model for Service ...

Страница 2: ...cal 56 75Hz 4 Max Resolution D sub Analog 1280 x 1024 75Hz 5 POWER SUPPLY 5 1 Power AC 100 240V 50 60Hz 0 6A 5 2 Power Consumption 6 ENVIRONMENT 6 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 6 2 Relative Humidity 10 80 Non condensing 6 3 MTBF 50 000 HRS with 90 Confidence Lamp Life 50 000 Hours Min 7 DIMENSIONS with TILT SWIVEL L1753S Width 364 5 mm 14 35 Depth 180 mm 7 09 Height 378 2 mm ...

Страница 3: ... Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty pl...

Страница 4: ...st receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 9 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices ...

Страница 5: ...tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coati...

Страница 6: ...onnection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on t...

Страница 7: ...ls 57 283 49 725 1152 832 32 64 224 832 x 624 V Lines 74 55 667 624 1 3 39 8 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 0 806 768 3 6 29 9 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 10 H Pixels 100 0 68 681 1456 1152 32 128 144 1152 x 870 V Lines 75 062 915 870 3 3 39 11 H Pixels 92 978 61 805 1504 1152 18 134 200 1152 x 900 V Lines 65 9...

Страница 8: ... 8 Monitor on the pad Pull up the stand part Separate head stand 2 3 4 2 Hold the head stand base and then Twist Stand until Click 4 1 5 Soft pad on the table 1 DISASSEMBLY Set ...

Страница 9: ... 9 Remove the screws Disassemble back cover 6 8 1 Pull the front cover upward 2 Then let the all latches are separated 3 1 3 2 3 Put the front face down 9 7 ...

Страница 10: ...LY Stand Push the four latches on the bottom to the outside and Separate Stand Body Base Reference the 1 2 After finished repair necessarily push 4ea Latches to inside for restoration 1 1 In case of Latch 4 1 2 2 3 ...

Страница 11: ...ISASSEMBLY Stand Hold the stand body Confirm two latch of right and left Push the latch to the inside Push the base to the opposite direction 1 2 3 Confirm the condition of separation 5 4 In case of Latch 2 ...

Страница 12: ...C TMDS Rx MStarACE LVDS Tx LVDS Analog R G B D Sub LIPS Filter 5V 12V 5V 3 3V 1 8V Vcc 5V 5V Scaler MCU Intel8032 Inverter 4 lamps 12V Regulator KEY 3 3V 1 8V Line Buffer OSD SSC EEPROM System Module 3 3V SDA SCL 3 3V Flash ROM 12V ...

Страница 13: ...trol IC P ch N ch Inverter Trans SMPS Lamp Current Feedback Over Voltage Protection Power Control IC Feedback Line Filter L N Drive Block 12V 12V 5V Inverter On OFF 3 3V Dimming Lamp Current Control Aux Drive Start Module Vcc Main Board Scaler DC DC converter 12V 5V ...

Страница 14: ...n signal and outputs 8 bit R G B signal to transmitter 2 Power Part This part consists of the one 3 3V and one 1 8V regulators to convert power which is provided 5V in Power board 12V is provided for inverter 5V is provided for LCD panel Also 5V is converted 3 3V and 1 8V by regulator Converted power is provided for IC in the main board The inverter converts from DC12V to AC 700Vrms and operates b...

Страница 15: ...DC voltage through a bridge rectifier and a bulk capacitor 3 Energy Transfer This part function is for transfer the primary energy to secondary through a power transformer 4 Output rectifier and filter This part function is to make a pulse width modulation control and to provide the driver signal to power switch to adjust the duty cycle during different AC input and output loading condition to ach...

Страница 16: ... is available to LCD Monitor only 1 Port Setup a Copy UserPort sys file to c WINNT system32 drivers folder b Run Userport exe c Remove all default number d Add 300 3FF e Click Start button f Click Exit button 2 EDID Read Write 1 Run WinEDID exe 2 Edit Week of Manufacture Year of Manufacture Serial Number a Input User Info Data b Click Update button c Click Write button ...

Страница 17: ...display 2 Wait for about 5 seconds and press MENU POWER switch with 1 second interval 3 The SVC OSD menu contains additional menus that the User OSD menu as described below a Auto Color W B balance and Automatically sets the gain and offset value b NVRAM INIT EEPROM initialize 24C08 c CLEAR ETI To initialize using time d AGING Select Aging mode on off e R G B 9300K Allows you to set the R G B 9300...

Страница 18: ...RT POINT AS OPENING EACH POWER LINE NO PROBLEM 1 Waveforms U201 96 CHECK KEY CONTROL CONNECTOR ROUTINE CHECK U201 NO NO CHECK 3 3V LINE OPEN CHECK CHECK 3 3V LINE NO CHECK X TAL YES CHECK J403 VOLTAGE PIN5 PIN6 5V CHECK U301 PIN2 VOLTAGE 3 3V IS U201 PIN75 3 3V VOLTAGE CHECK U201 PIN 96 PULSE 1 YES YES YES ...

Страница 19: ...OARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK MICOM INV ON OFF PORT 1 CONFIRM BRIGHTNESS OSD CONTRL STATE 2 CHECK MICOM DIM ADJ PORT LIPS J403 PIN5 PIN6 5V J403 PIN9 5V J403 PIN10 5V CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL CONTACT PROBE TO CAUTION LABEL CAN YOU SEE PULSE AT YOUR SCOPE YES YES YES YES ...

Страница 20: ...CHECK C210 C211 SOLDERING CONDITION 2 CHECK X201 3 TROUBLE IN U201 CHECK CONNECTION LINE FROM D SUB TO U201 U201 PIN96 97 OSCILLATE AS 14 31MHZ U201 PIN27 IS 48KHz H SYNC PIN28 IS 60Hz V SYNC IS PULSE APPEARED AT SIGNAL PINS AT MODE 12 1 2 1 2 Waveforms U201 96 97 U201 27 H SYNC 2 U201 28 V SYNC YES YES YES U201 PIN 16 75 3 3V ...

Страница 21: ...ROUBLE IN DPM TROUBLE IN DPM NO NO TROUBLE IN U201 CHECK PC PC IS NOT GOING INTO DPM OFF MODE CHECK H V SYNC LINE CHECK R442 R443 CHECK U201 PIN 27 28 SYNC PULSE 3 3 Waveforms R442 H Sync 3 R443 V Sync YES YES ...

Страница 22: ...Line NO NO Check BD101 Check U101 Pin7 9 10V Check D102 Trouble in Q101 NO Trouble in D201 D202 YES CHECK Fuse F101 OK CHECK C101 Voltage AC110V 160Vdc AC220V 304Vdc CHECK U101 Pin6 Waveform Square wave Come out Check Q101 Drain Waveform Check D201 D202 Voltage YES YES YES YES NO ...

Страница 23: ...k the waveform of U301 Pin11 12 19 20 Check the waveform of U301 Pin11 12 19 20 NO If waveform is no problem Check Q303 Q308 Or Trouble in U303 U304 YES CHECK P201 Pin9 3 3V Check U301 Pin3 5V Check U301 Pin2 OVP Less than 1 8V Check U301 Pin10 CMP Less than 2 75V Check U303 U304 Drain waveform YES YES YES NO ...

Страница 24: ... 24 WIRING DIAGRAM 11P 6P 3P 30P 6631900011H 6631T20023J 6631900109A 6631T20010E L1753S 6631900125A L1953S ...

Страница 25: ... 25 EXPLODED VIEW 010 020 090 100 110 120 030 190 150 160 180 170 080 130 140 040 050 070 060 ...

Страница 26: ...I WORLD WIDE LIEN CHANG 33139L7032C Main Total Assembly L1752S BFQ KXRDQPT BRAND NT CKD LM57A TSUM16AWL 14LANGUAGE 33139L9040C Main Total Assembly L1952S BFQ KXRDQPT NT CKD BRAND LM57A TSUM16AWL 14LANGUAGE 35509K0247A Cover MOLD ABS AF 320T L1752TX ABS 49509S0034A Plate PRESS H GI 0 8MM REAR HGI SHIELD LX52 LX19 SERIES 4940900022A Knob MAIN 5KEY LX52 TACK KNOB 49509K0262A Plate SUPPORT L1752 BRACK...

Страница 27: ...6V ZD414 0DZ560009GB BZT52C5V6S F 5 6V 5 2TO6V DATE 2007 01 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION ZD415 0DZ560009GB BZT52C5V6S F 5 6V 5 2TO6V U201 0IPRP00704A FE211M LF TSUM16AWL 3VTO3 6 U202 0IZZ9H0201A 0IMMR00004B 0IMMR00004B ATME U203 0ISG240860B M24C08 WMN6TP 8KBIT 1KX8BIT U301 0IPMGA0010A AZ1117H 3 3 4 75TO10V 3 3V 0 L1753S U301 EAN33480801 KIA1117S33 4 8V TO 10V 3 3V L1953S U303 0...

Страница 28: ...E 2007 01 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C208 0CKZTTA002B 330PF 1KV K R TP5 0 TAPING C210 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C301 0CZZTCT006D C3216X7R1E225M TDK 25V 2 2UF C303 0CZZTCT006D C3216X7R1E225M TDK 25V 2 2UF C304 0CZZTCT006D C3216X7R1E225M TDK 25V 2 2UF C305 0CZZTCT006D C3216X7R1E225M TDK 25V 2 2UF C306 0CK224DH56A 0 22UF 2012 25V 10 R TP X7R C307 0CH3104K566 0 1UF 5...

Страница 29: ...5 00 TA52 R303 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R304 0RD1002Q609 10K OHM 1 4 W 3 4 5 00 TA5 R309 0RN1502F409 15K OHM 1 6 W 1 00 TA52 R310 0RH1004D622 1M OHM 1 10 W 2012 5 00 D R311 0RH1502D422 15K 1 10W 1 TP R313 0RJ6202E472 62K OHM 1 8 W 1 2012 R TP R315 0RH2001D622 2K OHM 1 10 W 2012 5 00 D R316 0RH2001D622 2K OHM 1 10 W 2012 5 00 D R317 0RJ3303E472 330000 OHM 1 8 W 1 2012 R T R318 0RJ1503E...

Страница 30: ...SCHEMATIC DIAGRAM 30 1 SCALER ...

Страница 31: ... 31 2 POWER WAFER ...

Страница 32: ... 32 3 INVERTER ...

Страница 33: ... 33 4 POWER ...

Страница 34: ...Jan 2007 P NO MFL36713657 Printed in Korea ...

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