After connect external
adapter, +12VSTB
( Pin1 of N506) is OK?
N
Check Fuse and
+12VSTB network
If +5VSTB (Pin5/6 of
N506) is OK?
Check perpheral
circuit of N506
If these output points
are OK: N502-3.3V,
N507-1.2V, N505-
2.5V,N504-1.8V,V592-
5V,F592-5V
Check N501
perpheral circuit
If 3.3VSTB (output of
N503) is OK?
Check perpheral
circuit of N503
If 12V (output of N202)
is OK?
Check perpheral
circuit of N202
If outputs of N003 and
N004 are OK?
OK
Check perpheral
circuit of
N003&N004
If 5V(output of
N501) is OK?
N502/N507/N505/N504
/V592/F592 is
damaged or output
network is short circuit
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y