ELECTRICAL TROUBLESHOOTING GUIDE
4. PORTABLE FUNCTION
Portable function
Check JK300.
Check IC301 pin13, 14
input waveform.
Check IC301 pin7, 8, 9 SDOUT.
OK
YES
YES
YES
YES
NO
Replace the related part.
NO
Check IC301 pin3: 5 V, pin4 3.3 V.
Power part troubleshooting.
NO
3-9
YES
Refer to
Check IC301.