Brother LK3-B430E Mark II Service Manual page 74

10. ELECTRIC MECHANISM
4. Others
• The DC fan motor does not run.
• Error E-70 is displayed.
• Error E-F1 is displayed.
• Indication is strange.
• Any switch does not have any effect.
• The power lamp is not lit.
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Problem
LK3-B430E Mark II
Connector No. and position
Main circuit board
D C f a n
motor
Power supply circuit board
Main circuit board
Main circuit board
Panel PCB