3-16
ELECTRICAL TROUBLESHOOTING GUIDE
μ-com part check-1
Refer to
SMPS troubleshooting.
Check if IC100 of output voltage
is over 2.7 V.
Replace
IC100(AZ7027).
Check voltage of IC101 Pin4.
Check the Periphery of
IC100(AZ7027).
Check P-SENS
(CN001_Pin1,2)
NO
NO
Check
If input voltage of IC100 is
over 3.7 V.
Check both
end voltage of IC100
(AZ7027).
NO
YES
YES
YES
YES
YES
NO
4. μ-COM PART CHECK-1
OK OK
5. μ-COM PART CHECK-2
YES
YES
YES
YES
μ-com part check-2
OK
Refer to
SMPS troubleshooting.
Check If IC101_Pin14, 40, 55, 89
are 3.3 V.
Check the operation.
X100: 12 MHz, X101: 32.768 kHz
Replace D100, D101.
NO
NO
Check if
voltage of CN001_Pin1,2
is 3.7V.
Check
if output of D100,D101 is
3.3 V.
To Next Page
Loading...
Need help?
General
