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ELECTRICAL TROUBLESHOOTING GUIDE
2. KEY PART
KEY PART
Check CN103 1, 2 pin
Voltage 3.3 V
Check SWA01, SWA02,
SWA03, SWA04
OK
YES
YES
YES
NO
Check the connecting cables
Check R111 Pull-up Resistor
Replace the Related part.
NO
Check RA01, RA04, RA05, RA06
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3-24
Replace the cables
NO
YES
OK
Only for training and service purposes.
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