XOCECO LC20Y19, Service Manual

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21
5. Check flow of the power board (20”):
6. Check flow of the power board (23” and 27”):
Power board damages
or fuse blows
Replace the fuse and check
whether N501, D501
breakdown
Replace N501, D501
Check whether C512 has 18V Replace D502
Check whether pin1 of N501 has
wave
Replace N502
Check whether N502 is damaged
Replace
N505
Check whether N505 is
damaged
Check whether N505, D507 is
damaged
Replace the damaged parts
Y
Y Y
N
Y
N
Y
N
Y
N
N
Y
Check if the
C505 is normal
Check C528
DC(150~370)V
Check if X501 FU501 is normal
Check D502,
R531, D508
Check N501 13#
DC(15 V)
Check N501 and peripheral circuit
Check the
assistant supply
power
N
N
N
Y
Y
Y