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C1119:1.8
V
C1120:2.8
V,
C1121:2.8
V,
C1122:2.8
Connect with the battery,
V,
press "ON" key, check
C1123:2.8
whether the output voltage
V,
Check whether the output
frequency of X1100 is 32.768K
Check whether
R4401，R1107 is
broken
N
of U1100 is normal
Y
Y
Y
Change R4401,R1107
Replace the earthed capacitor
corresponding to the
N
defective pin, Check whether
it is OK
ChangeX1100，
N
C1100，C1101
N
ChangeU1100
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