Test Mode For Sewing Machine - Singer Futura Quartet FQ-4 Service Manual

Test mode for sewing machine

M4
M2
M1 M3 M5
Operation
Enter Test program.
Use the stitch width selector wheel (A) to go through the
diffrent test mode functions.
Mode 1: Needle position at Left/Centre/Right without feed.
After entering the test mode 2 all the diffrent sensors of the machine is de-activated (Machine will run wit-
hout thread).
Mode 2: Needle position at center without feed
Is used for checking the movement of the zig-zag step motor and centre position of the needle in straight
stitching. The zig-zag stepmotor calibrates and takes its Centre position.
Mode 3: Balance check
Machine will feed 2 mm, at center position, stitch 11 needles forward and backward.
Needle must always stop at the staring stitch
Mode 4: Bobbin thread brake sensor
Is for chrcking the bobbins sensor .Machine will feed 0.5 mm, at center position.
The top thread detection is deactivated.
Mode 5: align
Machine will feed 2.5 mm forward and 2.5 mm reverse, at z-z 7mm.
Singer Futura XL-400 , FQ-4 31