LG 42PG20R Service Manual Download

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Depto de Assistência Técnica
Av. D. Pedro I, W7777 - Distrito Industrial
Piracangagua II - Taubaté - SP - Brasil
Cx. Postal 324 - CEP 12.010-970
Tel. : (012) 221-8555 Fax. : (012)221-8550

Jan., 2008

Printed in Korea

P/NO : MFL41859303

LG Electronics Inc.

Summary of Contents for 42PG20R

Page 1: ...L DE SERVIÇO ATENÇÃO Antes de reparar este chassis leia as PRECAUÇÕES DE SEGURANÇA contidas neste manual CHASSIS PP81A MODELO 42PG20R 42PG20R MA website http biz LGservice com Internal Use Only CH VOL MENU INPUT ENTER ...

Page 2: ...ll right reserved Only for training and service purposes LGE Internal Use Only CONTEÚDO CONTEÚDO 2 PRECAUÇÕES DE SEGURANÇA 3 INSTRUÇÕES DE REGULAÇÃO 4 DIAGRAMA DE BLOCOS 12 VISTAS EXPLODIDAS 14 DIAGRAMA ELÉTRICO PAINEL DE CIRCUITO IMPRESSO ...

Page 3: ...presso ou módulos fixe seus fios nos terminais antes de soldar 4 Quando substituir uma resistência de potência resistor de película de óxido metálico no painel de circuito impresso mantenha os seus terminais com 10mm de distância do painel 5 Mantenha os fios e cabos distantes de componentes de alta potência e de alta temperatura 6 Este receptor deve operar em redes de 100 a 240 V AC 7 Antes de dev...

Page 4: ...n Pattern Generator Pattern 54 in Pattern Generator MSPG 925 SERISE 1 2 Black White Pattern Refer below picture 3 Adjust by commanding AUTO_COLOR_ADJUST 0xF1 0x00 0x02 instruction 2 Confirmation 1 We confirm whether 0xB6 RGB address of EEPROM 0xA2 is 0xAA or not 2 If 0xB6 RGB address of EEPROM 0xB2 isn t 0xAA we adjust once more 3 We can confirm the ADC values from 0xB0 0xB5 RGB addresses in a pag...

Page 5: ...stment 4 Adjustment method Before PCBA check have to change the Tool option and Area option About PDP After done all adjustments Press IN START button and compare Tool option and Area option value with its BOM if it is correctly same then Change RF mode and then unplug the AC cable If it is not same then correct it same with BOM and unplug AC cable For correct it to the model Øs module from factor...

Page 6: ...ge 7 EDID The Extended Display Identification Data DDC Display Data Channel Download Caution Use the proper signal cable for EDID Download Never connect HDMI D SUB Cable at the same time Use the proper cables below for EDID Writing 7 1 Profile To be possible for plug and play 7 2 Equipment 1 Adjusting PC with S W for writing EDID Data S W EDID TESTER Ver 2 5 2 A Jig for EDID Download 3 Cable Seria...

Page 7: ...Only HDMI 1 256bytes HDMI 2 256bytes HDMI 3 256bytes O Detail EDID Options are below ⓐ ⓑ ⓒ ⓓ ⓔ ⓐ Product ID ⓑ Serial No Controlled on production line ⓒ Month Year Controlled on production line ex Monthly 11 0B Year 2007 11 ⓓ Model Name Hex ⓔ Checksum Changeable by total EDID data 1 42inch Model 2 50 60inch Model ...

Page 8: ... RGB 1 Init the data 2 Load the EDID data Open File 3 Set the S W as below 4 Push the Write Data Verify button And confirm Yes 5 If the writing is finished you will see the OK message 8 HDCP High Bandwidth Digital Contents Protection 1 Connect D sub Signal Cable to D Sub Jack 2 Input HDCP key with HDCP key in program 3 HDCP Key value is stored on Main M STAR IC LGE6891DD which is 0x80 0x90 address...

Page 9: ...2times Caution System control Host should be DDC for adjustment 9 3 Connecting Diagram of Equipment for Measuring For Automatic Adjustment 1 Enter the adjustment mode of the white balance Enter the white balance adjustment mode at the same time heat run mode when pushing the power on by power only key Maintain the white balance adjustment mode with same condition of Heat run Maintain after AC off ...

Page 10: ...10 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only O DDC Adjustment Command Set R G B GAIN max value C0 Adjustment Adjustment Adjustment ...

Page 11: ...lue is fixed CASE First adjust the coordinate much away from the target value x y 1 x y target 1 Decrease the R G 2 x y target 1 First decrease the B gain 2 Decrease the one of the others In case of decreasing the x decreasing the R fix G In case of decreasing the y decreasing the G fix R 3 x target y target 1 First decrease B so make y a little more than the target 2 Adjust x value by decreasing ...

Page 12: ...eo LGE6891CD TW9910 Sub Decoder NTP3000A Digital Audio AMP MAIN NVM MC74HC4066 Audio SW LM324 X4 AMP SERIAL FLASH BD2041 Protect IC EDID NVM DDC HDP CEC TMDS HDMI in DDC HPD CEC TMDS HDMI in TMDS HDMI in USB AV I O Data I O 5V CVBS OUT 656 IN SW_RESET PART_I2C PART_I2C SW_RESET I2S OUT PART_I2C LVDS EN MPEG RX TX MPEG RESET I2S IN 656 IN TMDS HDMI in DDC HPD CEC DDC HPD CEC CEC not through HDMI MU...

Page 13: ...o LGE6891CD TW9910 Sub Decoder NTP3000A Digital Audio AMP MAIN NVM MC74HC4066 Audio SW LM324 X4 AMP SERIAL FLASH BD2041 Protect IC EDID NVM DDC HDP CEC TMDS HDMI in DDC HPD CEC TMDS HDMI in TMDS HDMI in USB AV I O Data I O 5V CVBS OUT 656 IN SW_RESET PART_I2C PART_I2C SW_RESET I2S OUT PART_I2C LVDS EN MPEG RX TX MPEG RESET I2S IN 656 IN TMDS HDMI in DDC HPD CEC DDC HPD CEC CEC not through HDMI MUX...

Page 14: ... 201 303 304 306 Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design withou...

Page 18: ...Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MAIN TOP MAIN BOTTOM CONTROL TOP CONTROL BOTTOM PRE AMP TOP PRE AMP BOTTOM ...

Page 19: ...istência Técnica Av D Pedro I W7777 Distrito Industrial Piracangagua II Taubaté SP Brasil Cx Postal 324 CEP 12 010 970 Tel 012 221 8555 Fax 012 221 8550 Jan 2008 Printed in Korea P NO MFL41859303 LG Electronics Inc ...

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