Singer 7422 Service Manual page 11

Test mode;
Mode 1:
In case of model 7422, 7442 and 7462, push switch at top right corner after machine is under test
mode as described above, and pattern LED will be lit at top left corner.
In case of other models, push pattern switch at top left corner after machine is under test mode and
the switch will be lit.
Needle shifts from left to center to right position repeatedly with foot control depressed.
Stitch length is set at "0".
Mode 2:
In case of model 7422, 7442 and 7462, push switch at second row after machine is under test
mode and pattern LED will be lit at extreme left position.
In case of other models, push pattern switch at second position from left and the switch will be lit.
Needle moves at center position with foot control depressed. Stitch length is set at "0".
Mode 3:
In case of model 7422, 7442 and 7462, push switch at third row after machine is under test mode
and pattern LED will be lit at extreme left position.
In case of other models, push pattern switch at third position from left and the switch will be lit.
Machine sews 11 stitches in forward with length at 2 mm and then same number of stitches in
reverse with length at 2 mm and stops automatically. Needle position is set at center position.
- 11 -