LG LM-D2540A Manual page 8

CD/DVD/KARAOKE FUNCTION CN901 PIN9
PIN DVDCTRL "HIGH" check
YES
CN901 PIN11 +8V(A) power check
CN901 PIN12 +5V power check
YES
CN901 PIN14 +3.3V power check
YES
OK
NO
IC301 PIN81 DVD-CTRL "HIGH" check
YES
PATTERN Check
IC301 "81" +16 PIN DC +16 over power check
YES
CN901 PIN5 +12V(D) power check
YES
IC904(78R08) check replacement
IC901 PIN10 DC +8V over power check
YES
IC905(78R05) power check
CN901 PIN10 DC +8V over power check
YES
IC907(7805)/IC906(78R33) power check
NO
IC301 replacement
NO
D913 AC voltage input check
NO IC902(7812) assemblecheck
replacement
NO
D902/D903 AC power input check
NO
D902/D903 AC power input check
- 2-3 -
NO
Transformer replacement
NO
Transformer replacement
Transformer replacement