21
If the power of IC201 and pattern’s,
soldering is normal when you check,
replace IC201.
Is the waveform below output
through 140pin of IC201 ?
Y
N
Y
Is the waveform above input
through 24pin of IC401 ?
Y
Does output but spindle Motor rotate ?
Replace MOTOR.
Y
Y
N
If the power of IC401 and pattern’s,
soldering is normal when you check,
replace IC401.
N
N
N
No SPINDLE MOTOR ROTATION
Содержание SW-248B
Страница 5: ...4 Disassembly Diagram ...
Страница 15: ...14 Block Diagram ...
Страница 25: ...24 Circuit Diagram Main ...
Страница 26: ...25 Circuit Diagram Front ...