LG MW-60SZ12, Service Manual

Page 1: ...NUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS RE 01JB MODEL MW 60SZ12 website http biz LGservice com e mail http www LGEservice com techsup html Sep 2002 Printed in Korea P NO 3828VD0134A ...

Page 2: ...s 4 Description of Controls 5 Adjustment Instructions 9 Correction of Screen Tilt Keystone 13 Replacing the Lamp 16 Description of each Block Circuits 17 Description of Micom 25 Block Diagram 33 Exploded View 34 Exploded View Parts List 35 Replacement Parts List 36 Schematic Diagram 2 Contents ...

Page 3: ... the chassis schematic and take corrective action 2 Read and comply with all caution and safety related notes on or inside the receiver cabinet on the receiver chassis or on the picture tube 3 Design Alteration Warning Do not alter or add to the mechanical or elec trical design of this TV receiver Design alterations and additions including but not limited to circuit modifications and the addition ...

Page 4: ...ductive parts INSULATION CHECKING PROCEDURE Disconnect the attachment plug from the AC outlet and turn the power on Connect the insulation resistance meter 500 V to the blades of the attach ment plug The insulation resistance between each blade of the attachment plug and accessible conductive parts Note 1 should be more than 1 Mohm Note Accessible conductive parts include metal panels input termin...

Page 5: ...onitor lamp is reaching the end of its life and needs Red to be replaced with a new lamp over 10000 hours Replace the Lamp Lamp Indicator Red flashing The monitor has trouble in the lamp or around it Contact the service center Green flashing The lamp cover is not closed Temperature Indicator Red The monitor is turned off due to its high temperature Contact your service center Red flashing Power ha...

Page 6: ... MIC R L Y PB PR RGB IN1 RGB IN2 RGB OUT MOUSE RS 232C RGB IN3 DVI I PONENT COM VIDEO S VIDEO DC OUT 12V 0 5A MIC Rear Connecting Part Rear Connecting Part RGB IN1 RGB IN2 RGB OUT MOUSE MIC RS 232C COMPONENT Y PB PR R L VIDEO S VIDEO RGB IN3 DVI I DC OUT 12V 0 5A Use this jack when connecting the wireless receiver to the monitor ...

Page 7: ... Button Downsizes the screen on the zoom function R MOUSE Button Corresponds to the Right Click of PC Mouse Zoom in Button Enlarges the screen size on zoom function POINTER Button After selecting menus controls selecting and adjusting functions with the direction of up down left right Moves the screen with the direction of up down left right on zoom function Moves and releases the selected icon on...

Page 8: ...ting Cables Optional Extras Contact your dealer for buying these items Contact your dealer for replacing a new lamp Remote Control Batteries 2 size AA Audio Video Cable Computer Cable MAC Serial Mouse Cable DVI cable Lamp S Video Cable PS 2 Mouse Cable IBM PC or Compatible Operating guide ...

Page 9: ...M Adjust in adjustment menu 3 Adjust voltage of VREF and VMID for each R G B SEE a Table below 4 Press the ENTER key on the R C for adjustment to store the adjustment value when adjustment is finished 4 EPLD Programming 1 Required Test Equipment 1 Byteblaster 2 PC or Notebook 1EA 3 EPLD Program 2 Sequence of Adjustment 1 Connect one port of Byteblaster to the Parallel Port and connect another port...

Page 10: ...trol 7 White Balance Gamma Adjustment 1 Required Test Equipments 1 Illuminometer name of model CA 100 1EA Measure color of projecting screen center 2 Pattern Generator 1EA 16 step Gray Pattern 64 step Gray Pattern 3 A remote control for adjustment 1EA 2 Setting of Devices 7 1 Sequence of Gamma manually adjustment 1 Prepare the PC Pattern Generator which is possible to out put R G B of 16 step and ...

Page 11: ...f center 4 Output the 15th VDP Test Pattern signal 7050 MIN 360 of No 4 sub adjustment item min adjustment Read the white coordinate and communicate with ET7050 IC through measurement equipment of optics Adjust screen coordinates data to adjust the color unifor mity of miner point At this time make sure that deviation is 5 5 and stan dard is color coordinate of center 5 White the miner middle maxi...

Page 12: ...alue when the adjustment is finished 12 EDID Data INput 1 Required Test Equipments 1 A JIg for adjusting PC DDC PC serial to D sub connection equipment 2 SW for writing DDC EDID data write read 3 D sub terminal 4 D sub DVI conversion connector 2 Setting of Devices 3 Preparation for Adjustment 1 Set devices as above and turn the PC jig on 2 Put the S W for writing DDC EDID datawrite read into opera...

Page 13: ... angle of engine is different or Mirror angle is different 13 Correction of Screen Tilt Keystone TILT KEYSTONE TILT Up and down operation necessity of the whole engine Rotation and side angle operation necessity of the whole engine KEYSTONE TLC is shorter than down KEYSTONE TLC is shorter than down Mirror angle Engine projection angle Comm onness ...

Page 14: ...f left right in front engine will move When moving the engine base with left and right direction in front engine will rotate 14 pole Rota tion Fixing Boss Adjustment Knob Adjustment Knob Locking Knob engine engine supporter engine base engine base For calculation When projection lens 0 2c leans Keystone occurs 5mm engine base The axis of rotation The axis of rotation Side angle Left Right angle ...

Page 15: ... adjustment Knob on the down part 4 If Tilt and Keystone is MAX MIN 4mm lock the locking Knob of left right in front part and then fix the fixing boss with screw 3 2 Improvement When turning left and right rotation because an engine construction structure is tuched a construction structure of cabinet shield case will be correction When turning adjustment Knob operation is bad because you cann t in...

Page 16: ...move the lamp case 6 Insert the new lamp gently into the correct position Make sure it is inserted cor rectly 7 Tighten the screw you removed in step 3 8 Replace the lamp cover and tighten the cover screws Make sure the almp cover is securely fastend If lamp cover is open the lamp indicator flashes green and the projector is not turn on Resetting the lamp time After pressing the key on the remote ...

Page 17: ...ge or discharge of internal con densor C1 and to select PRC Pulse Ratio Control which fixes off time of MOSFET and changes on time of it The voltage regulator Vr4 which is generated when the FB current through Photo Coupler flows in R4 is approved by Vr5 Because of this Comp 1 reverses and needed voltage value of Vr5 peak value of Id is supplied from Vr4 FB cur rent Like this Output control is cur...

Page 18: ...age This circuit lets latch circuit operate when the Vin terminal voltage exceeds 22 5V TYP and this is used to protect the Vin terminal in control circuit from over voltage Commonly the Vin terminal is supplied with subsidiary wire wound of Trans and this voltage is in proportion to output voltage so that this Protect circuit against over voltage oper ates in over voltage output in secondary part...

Page 19: ...or maintenance and this current is influenced by the elec tric potential of Vcc terminal If the supplied voltage in Vcc terminal goes below power voltage for releasing latch circuit 8 7V TYP latch opera tion can be released When this latch operation is released this IC begins start operation from Soft Start 2 Protect circuit against over voltage If the supplied voltage in subsidiary power terminal...

Page 20: ...ngual no I2C inter action is necessary Auto matic Sound Selection Fig Simplified functional block diagram of the MSP 3410G 2 Features Automatic Standard Detection of terrestrial TV standards All NICAM standards All Analog FM Srereo A2 standards Simultaneous demodulation of high deviation FM Mono and NICAM China Very high deviation FM Mono mode China Eutelast etc FM demodulation of all analog satel...

Page 21: ... 3 Block Diagram 21 Fig Signal flow block diagram of the MSP 3410G input and output names correspond to pin names ...

Page 22: ...brightness levels or four brightness levels Two types of screen correction segments 32 horizontal segments 24 vertical segments or 16 horizontal segments 12 vertical segments 9 Enables insertion of reference signal in video signal 10 Outputs drive signal for panel 11 Data is set via three wire serial interface 12 Built in boundary scan function 13 176 pin 24 mm 24 mm QFP package 2 Block Diagram 22...

Page 23: ...namic range of 1 5 to 13 5 V 8 Built in function for switching scan direction 9 Low power consumption 10 48 pin 7x7 mm 2 QFP package 2 Pin Layout 3 Block Diagram 23 1 2 3 4 5 6 7 8 9 10 11 14 15 16 17 18 19 20 21 22 25 26 27 28 29 30 31 32 33 37 38 39 40 41 42 43 44 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 MSB E O R L INV DGND DVCC AVCC BIAS STBY BYP AGND BIAS VID1 AVCC1 2 VID2 AGND2 3 VID3 AVCC3 4...

Page 24: ... Frequency Max 4 2 MHz Care is required to avoid exceeding the allowable power dissipation for the package which is 280mW 2 Internal level shift circuit converts input to a signal capable of driving a TFT panel 3 Built in multiplex function to switch the panel auxiliary sig nal 4 CMOS Si Gate process 5 48 pin plastic flat package lead pitch 0 5mm QFP 6 Does not feature radiation resistant or light...

Page 25: ...isely according to the signal pattern So the manual to adjust Clock phase etc manually 1 5 Sound Signal Adjustment Volume Mute DASP AVL MIC 1 6 Other Functions 1 7 Controlling Power 1 ST BY Power On key in Main Power On Fan Off Blue Background Lamp On LOGO ON Video output or No signal 2 Power Off key in Lamp Off Audio mute Fan Off Main Power Off ST BY 1 8 Data Saving EEPROM 24C256 EEPROM IIC BUS I...

Page 26: ...the function of the PS 2 MAC Mouse 1 12 DDC1 2B Use the specified IC 24LC21 for DDC1 2B to write EDID table data on 24C21 through adjustment Zig Operation indicator LED Orange 7 Stand By Orange flashing 7 lamp is cooling as power out 1 minutes Ignore the power on input Green 7 Run Green flashing 7 7 Sec Cooled for a minute before turning off the lamp 7 25 Sec Didn t cool the lamp for a minute whil...

Page 27: ...IC VIDEO DECODER VIDEO DEINTERLACE IC TIMING GENERATOR GAMMA COLOR UNIFORMITY I2C Controlled OUTPUT PORT ADC DA CONVERTER DDC 1 2B Resolution 640 x 350 640 x 350 640 x 400 720 x 400 720 x 400 640 x 480 640 x 480 640 x 480 640 x 480 640 x 480 VGAEGA PC98 VGA Text VGA Vertical Frequency 70 090Hz 85 080Hz 85 080Hz 70 082Hz 85 039Hz 59 940Hz 72 800Hz 75 00Hz 85 008Hz 100 040Hz Horizontal Frequency 31 ...

Page 28: ...057Hz 60 00Hz 75 00Hz 60 020Hz 74 550Hz 60 004Hz 75 029Hz 75 062Hz 60 00Hz 60 00Hz Horizontal Frequency 35 156KHz 37 879KHz 48 077KHz 46 875KHz 53 674KHz 64 016KHz 35 522KHz 48 363KHz 56 476KHz 60 023KHz 68 677KHz 54 348KHz 63 995KHz 67 500KHz 77 487KHz 60 00KHz 75 00KHz 63 981KHz 49 725KHz 48 363KHz 60 023KHz 68 681KHz 33 750KHz 45 00KHz 16 19 21 1 15 AV Input Specification Item Video Input appli...

Page 29: ...4 59 94 50 00 50 00 60 00 59 94 50 00 60 00 59 94 H Freq KHz 15 73 15 63 31 47 15 625 31 25 45 00 44 96 31 25 33 75 33 72 Resolution 640 x 480 640 x 480 704 x 480 720 x 576 720 x 576 1280 x 720 1280 x 720 1920 x 1080 1920 x 1080 1920 x 1080 1 2 3 4 5 6 7 8 9 10 SDTV DVD 480I SDTV DVD 480I EDTV 480P SD 576I 625 Line HDTV 576P HDTV 720P HDTV 720P HDTV 1080 50I HDTV 1080 60I HDTV 1080 59 94I No Speci...

Page 30: ...B5 PB6 PB7 P11 P12 P13 P14 P15 P16 VREF VMID RLCCOM RNRSH RNRSL GLCCOM GNRSH GNRSL BLCCOM BNRSH BNRSL N C P17 P18 P19 P110 P111 P112 KEY_OUT1 KEY_OUT2 KEY_OUT3 SDAT SCLK ET7050_CSEL M62352_CS M62352_CS2 SCDT N C TEMP_DET LAMP_ON_DET CASE_DET PC_SEL2 WP N C SDA SCL N C E_SDA E_SCL SDA_2 SCL_2 N C N C M62352 2nd CS P21 P22 P23 P24 P25 P26 N C MOUSE_RESET UDI LRI COR_CON N C N C MUTE N C TEMP_REF N C...

Page 31: ...200 VPC3230D CXA2101 Not Used 7 EEPROM I2 C Bus Data Line EEPROM 24LC256 7 EEPROM I2C Bus Clock Line EEPROM 24LC256 7 LED Control I2 C Bus Data Line M62320 7 LED Control I2C Bus Clock Line M62320 Not Connection 7 Sync detection from TFP401 Not Connection 7 Temperature detect 7 Lamp On Off status detect 7 Lamp case open error detect 7 Selection between RGB3 and RGB1 2 selection result 7 EEPROM 24LC...

Page 32: ...2 clock line 7 ET7050 chip selection enable line 7 M62352 selection enable line 7 M62352 selection enable line 7 Full scale setting voltage 7 Center video signal setting voltage 7 Potential of opposing electrode of liquid crystal panel red 7 TFT panel auxiliary signal input A red 7 TFT panel auxiliary signal input B red 7 Potential of opposing electrode of liquid crystal panel green 7 TFT panel au...

Page 33: ...Block Diagram 33 ...

Page 34: ...EXPLODED VIEW 34 430 410 420 302 301 305 306 307 121 310 640 650 300 120 303 304 123 620 610 630 600 124 590 125 540 502 530 122 174 550 501 503 560 570 580 330 660 520 ...

Page 35: ...TTON 410 3809V00252C BACK COVER ASSY UPPER 3808V00225A 420 3809V00253C BACK COVER ASSY LOWER 3808V00226A 430 5018V00025C MIRROR ASSY MIRROR 501 3210V00072B FRAME CHASSIS DIGITAL 502 3210V00073A FRAME CHASSIS SMPS 503 4811V00027A BRACKET ASSY BOARD A V 520 6871VMMB77A PWB ASSY MAIN RE 01JB MAIN PCB ASSY 530 6871VPMA02A PWB ASSY POWER SMPS RE 01JB 540 6871VPMA03A PWB ASSY POWER SMPS RE 01JB ST BY 55...

Page 36: ... TP 1000V 0 5A 1 DIODE RECTIFIERS EU1ZV 1 TP SANKEN DIODE RECTIFIERS BRIDGE D2SBA60 STK DIODE RECTIFIERS FML G12S LOCA NO PART NO DESCRIPTION IC801B IC802B IC604 IC703 IC708 IC811 IC820 IC831 IC832 IC841 IC845 IC851 IC1001 IC1003 IC1004 IC1101 IC1102 IC1103 IC1104 IC1106 IC1108 IC1109 IC1110 IC1201 IC1202 IC1203 IC1504 IC1507 IC1530 IC1600 IC1601 IC1602 IC1603 IC1604 IC1650 IC1660 IC1665 IC1700 IC...

Page 37: ...S UDZS TE 17 5 1B ROHM DIODE ZENERS UDZS TE 17 5 1B ROHM DIODE ZENERS UDZS TE 17 5 1B ROHM DIODE ZENERS UDZS TE 17 5 1B ROHM DIODE ZENERS UDZS TE 17 5 1B ROHM DIODE ZENERS UDZS TE 17 5 1B ROHM LED LITEON LTL 1BEHJ 1 BK ORANGE G LED LITEON LTL 1BEHJ 1 BK ORANGE G LED LITEON LTL 1BEHJ 1 BK ORANGE G LOCA NO PART NO DESCRIPTION Q810 ZD841 ZD851 IC3181 Q650 Q841 Q842 Q851 Q910 Q1600 Q1601 Q3018 Q3019 Q...

Page 38: ...8 C1064 C1066 C1072 C1074 C1116 C1119 C1130 C1136 C1148 C1151 C1155 C1170 C1172 C1175 C1201 C1202 C1205 C1207 C1221 C1223 C1240 C1247 C1500 C1520 C1533 C1535 C1537 C1539 C1541 C1543 C1545 C1557 C1568 C1569 C1580 C1581 C1583 C1585 C1586 C1587 C1589 C1590 C1591 0CK224DF56A 0CE106SH6DC 0CK224DF56A 0CE476SF6DC 0CE107SF6DC 0CE107SF6DC 0CE106SH6DC 0CK224DF56A 0CK224DF56A 0CE476SF6DC 0CE476SF6DC 0CE476SF...

Page 39: ...2186 C2188 C2192 C2193 C2194 C2195 C2198 C2201 C2202 C2203 C2204 C2211 C2216 C2222 C2226 C2234 C2248 C2260 C2267 C2311 C2319 C2322 C2332 C2343 C2363 C2380 C2386 C2390 C2391 C2392 C2393 C3047 C3048 C3049 C3050 C3053 C3054 C3061 C3063 C3066 C3100 C3101 C3102 C3183 C3200 C3206 C3208 C3210 C3212 C3214 C3216 0CE476VH6DC 0CE476SF6DC 0CE476SF6DC 0CE336SH6DC 0CE336SH6DC 0CE336SH6DC 0CE336SH6DC 0CE476SF6DC...

Page 40: ...2 L2305 L2306 L2350 L3200 L3203 L3206 L3280 L3401 L3406 T801 T810 T830 P1501A P3104A P3132A P3133 P3134 P3161 P3162 P3163 P3165 P3166 P005A P100 P601 P602 P701B 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A 6140VB0003A...

Page 41: ...CTOR CIRC ETC 50P FH12 50S 0 5H CONNECTOR CIRC ETC 50P FH12 50S 0 5H CONNECTOR CIRC DRAWING 54104 3692 36PIN CONNECTOR CIRC DRAWING 54104 3692 36PIN CONNECTOR CIRC DRAWING 54104 3692 36PIN CONNECTOR D SUB 68114 1521 15PIN 2 29MM CONNECTOR D SUB 68114 1521 15PIN 2 29MM CONNECTOR D SUB 68114 1521 15PIN 2 29MM CONNECTOR HOUSING 36512 0098 48 2 54 CONNECTOR D SUB 68107 0922 9PIN 2 77MM A LOCA NO PART ...

Page 42: ...1 R OHM 100 OH MNR 14 E0A J 101 R OHM 100 OH 47 OHM 1 16 W 1608 5 00 R T 22 OHM 1 16 W 1608 5 R TP 4 22 OHM 1 16 W 1608 5 R TP 4 LOCA NO PART NO DESCRIPTION RA1703 RA1704 RA1705 RA1706 RA1707 RA1708 RA1709 RA1710 RA1711 RA1712 RA1713 RA1714 RA1715 RA1800 RA1801 RA1802 RA1803 RA1804 RA1805 RA1806 RA1807 RA2001 RA2003 RA2004 RA2006 RA2007 RA2010 RA2011 RA2013 RA2014 RA2016 RA2017 RA2018 RA2019 RA202...

Page 43: ...VOLT 1A 340P FILTER BMK351 NIIGATA 50VOLT 1A 340P FILTER BMK351 NIIGATA 50VOLT 1A 340P FILTER BMK351 NIIGATA 50VOLT 1A 340P LOCA NO PART NO DESCRIPTION L1576 L1577 L1578 L1579 L1600 L1601 L1602 L1605 L1606 L1740 L1821 L2010 L2060 L2061 L2062 L2103 L2105 L2250 L3007 L3008 L3131 L3132 L3201 L3202 L3204 L3341 L3342 L3343 L3344 L3402 L3403 L3404 X1001 X1700 X3280 X3301 A1 A2 CA1 CA2 CON F800 RL831 NTC...

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Page 49: ...MAIN TOP POWER TOP SOUND TOP CONTROL TOP INTERFACE TOP POWER SWITCH TOP PRE AMP TOP BALLAST INTERFACE TOP ...

Page 50: ...MAIN BOTTOM SOUND BOTTOM AV BOTTOM PC BOTTOM CONTROL BOTTOM INTERFACE BOTTOM DVI BOTTOM AV TOP DVI TOP PC TOP ...