LG mc71ats free download

File name mc71ats.pdf

NO PICTURE/ NO COLOR Is the CVBS signal at pin 4 of P101A normal? No Check IF Board Yes Is the CVBS signal at Pin 40 of IC201 normal? No Check/Replace Yes IC201 Is the Y signal at Pin 8 of IC203 normal? No Check/Replace Yes IC203, R223 Is the Y signal at Pin 31 of IC501 normal? No Check/Replace Yes IC505 Are B-Y, R-Y signal at Pins 33, 34 of IC501 normal? No Check/Replace Yes IC501 Are B,G,R signal at Pins 12, 13,14 of IC501 normal? No Check/Replace Yes IC501 Check CPT Board NO PIP In case of PIP (AV) In case of PIP (RF) Is there video signal at Is there CVBS signal at No pin 29 of IC201? pin 24 of ICP3? No Check/Replace IC201 Yes Yes Check I2C Bus Check TUNER/IF parts Is there video signal at of PIP pin 26 of ICP3 No Yes Check PP2, PP2A Abnormal Check pins 1, 2, 3 of ICP3 Check/Replace ICP3, ICP2 Normal Check pins 8,9,10,14 Abnormal of ICP6 Check/Replace Normal IC4P, IC5P Abnormal Check pins 1, 4, 6, 8 of IC504 Check PP3A, PP3 Normal Check/Replace IC504 NO TELETEXT Check the voltage of C703(+) 12V Abnormal Normal Check the 12V line Abnormal