Power Check - LG LM-D2540A Manual

POWER CHECK

Every kinds of Fuse check
YES
IC700 "12"(+VH2), 6(-VH2) PIN DC power output check
YES
CN901 PIN5 +12V(D) power check
NO
YES
CN901 PIN3 +6.2V(D) power check
NO
YES
CN901 PIN4 +12V(A) power check
NO
YES
NO
Fuse replacement
NO
PN900 PIN1, 5 DC voltage output check
D900 PIN2, 3 AC check replacement
OK
CN901 PIN6, 7 DC +16V over power check
NO
YES
IC902(7812) assemble check replacement
CN901 PIN6, 7 DC +16V up to power check
NO
YES
CN901 PIN5 +12V(D) power check
NO
YES
IC901(7805) assemble check replacement
CN901 PIN6, 7 DC +16V over power check
NO
YES
CN901 PIN8 PWR - CTRL "HIGH" check
NO
YES
IC903(78R12) assemble check replacement
- 2-2 -
NO
YES
D900 replacement
NO
YES
Transformer replacement
D901 AC voltage input check
D913 AC voltage input check
IC902(7812) assemble check replacement
D901 AC voltage input check
IC301 PIN76 PWR-CTRL "HIGH" check
YES
PATTERN check
NO
Transformer replacement
NO
Transformer replacement
NO
Transformer replacement
NO
IC301 replacement