Diagnostic Test 03 / BH (Buttonhole Sensor)
1.
When the buttonhole lever is all of
the way up, the display should read
“BH”.
2.
When the buttonhole lever is pulled
all of the way down and moved in the
sensor, the buzzer sounds and LCD
displays BH symbol.
3.
When the lever is all of the way down
and not touched, the slit in the shield
plate should be as close to the middle of
the sensor as possible.
4.
If you need to make an adjustment,
locate the 1.5mm hex screw sticking out
of the lock nut. Turn the hex screw to align
the slit of the black shield plate within the
middle of the sensor.
Do not loosen the
lock nut.
For further information see the
Diagnostics Test Appendix 03.
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