3-19
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Only for training and service purposes.
3. IC503 CHECK
CHECK IC500 PIN.
OK
OK
Refer to MCS troubleshooting.
Replace IC500.
OK
OK
Check
pinA12, pinB12 SF_SCK :
SF_MISO
Check MCS
voltage 3.3 VA.
Check IC500.
NO
NO
NO
YES
YES
YES
YES
ELECTRICAL TROUBLESHOOTING GUIDE
2. MCS PART CHECK
YES
YES
YES
YES
YES
MCS PART CHECK
OK
Refer to SMPS troubleshooting.
Check and change IC101.
X500: 24 MHz, X501: 32.768 kHz
Check the operation.
Check and change IC100.
NO
NO
NO
Check if voltage of CN102
Pin13, 14 is 12 VA..
Check if IC101
have 1.2 VA output.
Check if IC100
have 3.3 VA output.