LG LX-D2640, Service Manual

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POWER CHECK
Every kinds of Fuse check
C916(-), C917(+) DC power output check
IC905 output DC 5.6V power check
IC907, 912 Output DC power check
IC908 Output DC power check
normal operation
IC904, IC909, (IC906) Output
DC +12V/(-12V) power check
Fuse replacement
PN900, 8, 9 AC voltage output check
PN901 5, 7 PIN DC power check
IC904, IC909, IC906 replacement, PATT check
D911, 912, 913, 914 check replacement
Transformer replacement
System cable check
IC904 replacement
IC501 replacement
System cable check
C902(+) DC power check
IC902 replacement PATT check
IC501 pin8 “H” check
Ic907, 912 replacement, PATT check
PN901 pin7 DC power check
IC908 replacement, PATT check
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON