Replacing Printed Circuti Board S1; Replacing Embroidery Unit Detecting Switch - Janome MC9900 Additional Service Manual

MC 9900
q
w
q
Replacing Printed Circuit Board S1
z Remove the Y-carriage cover (lower) (see pages
6-7).
Remove the setscrew q.
Disconnect the connectors from the printed circuit
board S1.
Remove the printed circuit board S1.
To attach, follow the above procedure in reverse.

Replacing Embroidery Unit Detecting Switch

z Remove the setscrew q.
x Disconnect the connector w from the printed circuit
board S1.
Remove the Embroidery unit detecting switch.
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