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Now downloading free:LG StudioWorks 441  [report bad file]  

Download LG StudioWorks 441 docs - Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information

File information:
File name:StudioWorks 441-CA51.rar
Size:1694 kB
Extension:.rar
MD5 Checksum:6768441be810a03c867bef24acde4ec0
Mfg:

LG

Model:

StudioWorks 441

Original Chassis:CA 51
Descr:Service Manual
Group:Electronics > Computer equipment > Monitors >
Uploaded:2007-06-27 06:15:46
User:eralonso
Multipart:No multipart

Information about the files in archive:
Decompress result:OK
Extracted files:10
File nameText
CM550_1.PDFASPECIFICATIONS 1. PICTURE TUBE Size Gun DefIection Angle Neck Diameter Phosphor Transmission Dot Pitch Low Radiation 3-2. Power Consumption : 15 inch (Flat Square Tube) : In-line : 90 : 29. 0mm : P22 : 56% : 0.28mm : MPR-II MODE NORMAL (ON) STAND-BY SUSPEND OFF H/V SYNC ON/ON OFF/ON ON/OFF OFF/OFF POWER CONSUMPTION LED COLOR GREEN less than 90 W less than 15 W less than 15 W less than 8 W ORANGE ORANGE 2. SIGNAL 2-1. Horizontal & Vertical Sync 1) Input Voltage Level : Low=0~1.2V, High=2.5~5.5V 2) Sync Polarity : Positive or Negative 2-2. Video Input Signal 1) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 2) Input Impedance 3) Video Color 4) Signal Format 4. DISPLAY AREA 4-1. Active Video Area 4-2. Display Color 4-3. Display Resolution 4-4. Video Bandwidth : 270 x 195mm (10.63" x 7.68") (Available for Full Screen) : Full Colors : 1024 x 768 / 60Hz (Non-Interlace) : 65MHz : 0~0.7Vp-p : 0Vp-p : 0.467Vp-p : 0.7Vp-p : 75 : R, G, B Analog : Refer to the Timing Chart 5. E
CM550_10.PDFDISASSEMBLY 1. TILT/SWIVEL REMOVAL 1) Set the monitor faces downward. 2) Pressing the latch (a), carefully remove the Tilt/swivel by pulling it upward. 3. TOTAL CHASSIS ASSEMBLY REMOVAL 1) Disconnect P701, P903, P301, P302 and the other connectors. 2) Remove three screws (a) from the Total Chassis Assembly. 3) Remove the Total Chassis Assembly. (a) P301 P302 (a) P701 P903 (a) 2. BACK COVER REMOVAL 1) Remove four screws (a) from the Back Cover. 2) Slide the Back Cover away from the Front Cabinet of the monitor. (a) 4. VIDEO BOARD ASSEMBLY REMOVAL 1) Remove four pins (a). 2) Remove CDT earth connector (b). 3) Carefully separate the Video Board Assembly from the CDT neck. 4) Discharge the remaining static electricity by shorting between the Anode Cap and the CDT ground. 5) Disconnect the Anode Cap from the CDT. (a) Anode Cap CDT Assembly (a) P304 (a) (b) -8- 5. SPEAKER AND CONTROL BOARD REMOVAL 1) Remove four screws (a). 2) Remove Speaker Shassis Assy Left/Right. 3) Remove f
CM550_2.PDFTIMING CHART VIDEO C B A E SYNC D F FACTORY PRESET MODE MODE MARK H O R I Z O N T A L MODE 1 -- MODE 2 -- 43.269 17.778 5.333 1.556 1.556 23.111 2.222 -- 85.008 11.093 0.670 0.023 0.069 11.764 0.578 640 x 480 85Hz MODE 3 -- 31.470 25.420 6.360 0.640 3.810 31.780 1.910 + 70.080 12.710 1.557 0.413 0.064 14.270 1.080 720 x 400 70Hz MODE 4 + 37.880 20.000 6.400 1.000 3.200 26.400 2.200 + 60.320 15.840 0.739 0.026 0.106 16.579 0.607 800 x 600 60Hz MODE 5 + 53.674 14.222 4.409 0.569 1.138 18.631 2.702 + 85.061 11.179 0.578 0.019 0.056 11.756 0.503 800 x 600 85Hz MODE 6 -- 48.360 15.750 4.920 0.370 2.090 20.680 2.460 -- 60.000 15.880 0.786 0.062 0.124 16.670 0.600 1024 x 768 60Hz Sync Polarity Frequency Video Active Time Blanking Time Front Porch Sync Duration Total Period Back Porch Sync Polarity kHz s s s s s s A B C D E F 31.469 25.422 6.356 0.636 3.813 31.778 1.907 -- 59.940 A B C D E F 15.253 1.430 0.318 0.064 16.683 1.048 640 x 480 60Hz V E R T I C A L Frequency
CM550_3.PDFCONTROL LOCATIONS 2 1 SW435 VR852 3 VR831 4 VR501 CONTROL 5 + SW434 SW433 SW432 SW431 6 - 7 8 MAIN VR850 9 10 11 VR842 VR705 12 VR901 FBT 16 VR314 13 VR357 17 VR313 14 VR347 15 VR367 VIDEO No. 1 2 3 4 5 6 7 8 9 Ref. No. SW435 VR852 VR831 VR501 SW434 SW433 SW432 SW431 VR850 Control Function POWER ON/OFF BUTTON CONTRAST BRIGHTNESS VIDEO VOLUME ADJUSTMENT UP ( SELECT RIGHT ( SELECT LEFT ( ) ) ) ADJUSTMENT DOWN ( No. 10 11 12 13 14 15 16 17 Ref. No. VR842 VR705 VR901 VR357 VR347 VR367 VR314 VR313 Control Function ABL ADJUSTMENT HIGH VOLTAGE ADJUSTMENT B+ ADJUSTMENT R-CUT OFF B-CUT OFF G-CUT OFF G-DRIVE R-DRIVE w v ) -6-
CM550_4.PDFADJUSTMENT GENERAL INFORMATION All adjustment are thoroughly checked and corrected when the monitor leaves factory, but sometimes several minor adjustment may be required. Adjustment should be following procedure and after warming up for a minimum of 30 minutes. Alignment appliances and tools. - Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.) - E(E)PROM with each mode data saved. - Digital Voltmeter. - White Balance Meter. - Luminance Meter. 8) Adjust trapezoid ( ) with TRAPEZOID in the alignment program or +, buttons on the monitor to be the best condition. 9) Display from Mode 2 to Mode 5 and repeat above adjustment. 4. Adjustment for White Balance and Luminance. 1) Set the White Balance Meter. 2) Demagnetize CDT with the demagnetizer. (external degaussing coil). 3) Adjust H x V size to 270 2mm x 195 2mm. 4) Display color 0,0 pattern at Mode 1. 5) Set Brightness ( ), Contrast ( ) volume to max position. 6) Set VR347 (B-BIAS) and VR357 (R-BIAS) to min and VR367
CM550_5.PDFTROUBLESHOOTING GUIDE BASIC GUIDE CHECK SMPS SECONDARY B+ OUTPUT NO FOLLOW NO POWER PROCEDURE YES CHECK HORIZONTAL OUTPUT WAVEFORM NO FOLLOW NO RASTER PROCEDURE YES CHECK VERTICAL OUTPUT WAVEFORM NO FOLLOW NO VERTICAL DEFLECTION PROCEDURE YES CHECK VIDEO OUTPUT WAVEFORM NO FOLLOW NO CHARACTER, NO CONTRAST PROCEDURE YES FOLLOW OTHER PROCEDURES - 14 - 1. NO POWER NO POWER CHECK C908 DC VOLTAGE? DC=MORE THAN 130V YES NO TROUBLE IN F901, R901, D901, D902 CHECK T901 PIN 3 ? NO CHECK IC901 NO TROUBLE IN Q901, Q902, IC901,R904, R905, R912, D906, D907 YES YES TROUBLE IN D909, R916 CHECK SMPS SECONDARY DC VOLTAGE ? TROUBLE IN D931~D933, D936 OR THEIR CONNECTED COMPONENTS NO 6.3V, 14V, 50V, 72V YES CHECK IC931 PIN 3 VOLTAGE (5V)? NO TROUBLE IN IC931 CIRCUIT YES TROUBLE IN OTHER PRIMARY CIRCUIT - 15 - 2. NO CHARACTER NO CHARACTER CHECK IC301 PIN 8 (8V)? YES NO TROUBLE IN IC302 14V LINE CHECK IC301 PIN 2, 4, 6 ? YES NO TROUBLE IN PC SIGNAL, C301, C302,
CM550_6_B.PDFVIDEO Signal R,G,B Video Drive Circuit MC13281 (IC301) R,G,B Video Output Circuit R,G,B PC H/V SYNC DDC Audio Signsl CDT Screen Secondary Rectifier Circuit Focus BLOCK DIAGRAM Transformer (T901) Microprocessor Circuit PC68HC705BD7 (IC401) Vertical Output Circuit TDA4866 (IC601) Anode - 10 L V Primary Rectifier Circuit Switching Control Circuit STR6653 ( IC901) Horizontal/Vertical Drive Circuit TDA4858 (IC701) H High Voltage Generation Circuit (FBT) D/D Converter E N Earphone Jack Audio AMP Speaker (L/R) AC INPUT VOLTAGE (90~264V) DESCRIPTION OF BLOCK DIAGRAM 1. Primary Rectifier Circuit This circuit transform AC line voltage to DC voltage as the supplied source for secondary circuit. 2. Switching Control Circuit This circuit operate to be kept output of the secondary rectified circuit in constant level any conditions; no load, full load, and line voltage variation, ... etc. The main function is operated by the IC901 (STR6653) synchronizing to horizontal frequency via
CM550_6_S.PDF
CM550_6_W.PDFWIRING DIAGRAM SPEAKER-R SPEAKER-L P704 P705 P505 P506 P504 P501 P702 P703 P508 P902 S+ S P903 P401 P701 FBT AC Socket P502 E2 Signal Cable E3 P302 P301 P304 P303 -7-
CM550_7_LGCDT.PDFEXPLODED VIEW 7 3 6 27 28 NO 1 2 PART NO 3091TKB025F 2423GB0A89N 339-002D 6868T14002G 150-A29A 407-H54A 407-S88A 6871TVH093A 4815TKV008L 6174Z-1003D 407-S87J 4920TKC007D 4920TKP038B 4950TKE002A 407-S29B 387-019S 407-T98T 3550TKK001C 4810TKM030C 5040TKM003B 4940TKC006A 6871TST095A 4950TKK123A 340-732Y 332-102F 6401TZZ013A 3809TKB012E 332-102F 3043TKK006D 3313T15043B 6871TVT093B 6871TMH090B CABINET ASS'Y CDT, M36LBL803X34R6LD SCREW, PHP+5x30BP(FZMY)+GW18 CDT GROUND WIRE DEGAUSSING COIL VIDEO SHIELD (FRONT) PLATE, HEAT SINK FOR Q341, Q351, Q361 VIDEO PCB ASS'Y VIDEO SHIELD (REAR) FBT, FMMPC51-M1003D PLATE, HEAT SINK FOR IC601 PLATE, SUB HEAT SINK FOR Q731, Q741, Q753 PLATE, SUB HEAT SINK FOR Q731, Q741, Q753 METAL, EARTH TERMINAL PLATE, HEAT SINK FOR Q704 AC SOCKET ASS'Y PLATE, HEAT SINK FOR IC901 REAR COVER MAIN BRACKET RUBBER, SUPPORT MOLDING CONTROL ROTARY KNOB CONTROL PCB ASS'Y PLATE, SHIELD FOR FBT BOTTOM BRACKET SCREW, PTP+4x20BP SPEAKER ASS'Y (L+R) BACK COVER ASS'Y SCREW, PTP+4x2
CM550_S.PDFColour Monitor USER GUIDE BENUTZERHANDBUCH MANUEL D'UTILISATION GUIDA UTENTE GUIA DEL USUARIO StudioWorks 550M Tabla de Contenido Registro del Monitor Aviso ...E1 Reconocimientos de Marcas...E1 Precauciones Importantes Sobre Seguridad ...E2 Respecto A Las Instalaciones...E3 Respecto A La Limpieza ...E3 Respecto Al Reempaque ...E3 Base Giratoria e Inclinable Instalacion...E4 Instalaciones Generales Conexiones ...

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