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Electronic Parts Troubleshooting Guide
Possible Trouble 1
: The unit does not operate.
Is the trans input power
AC240V?
Is the trans
output power about
AC15V?
Is input voltage of IC2
DC16V?
Is output voltage of IC2
DC12V?
Is output voltage of IC3
DC5V?
Is the reset circuit all
right?
Is output voltage of
IC1 PIN3.51 DC5V
Check the fuse check
the wiring diagram.
Is shorted the
trans output?
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Check the main
P.C.B pattern.
Exchange the trans.
Exchange BD01.
Exchange IC2.
Exchange IC3.
Exchange IC1.
Check the DC 5V
P.C.B pattern
Check and exchange IC4
Содержание LS-B0760CM/B0760HM
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