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11-6) The material is inappropriately
6-A) The needle hole of the throat
Replace the current gauge with a new one having a smaller
stretched.
plate is too large.
diameter hole.
6-B) The thread relief on the back
Use a presser with a smaller thread relief on the backside
side of the presser is too large.
or without thread relief.
6-C) The parallel level of the presser
Replace the presser, or loosen the presser bar holding
is inappropriate.
screw and correct the needle entry and presser bend if
there is no needle entry.
6-D) The presser is floating.
Adjust the clearance between the presser bar holder and
lifting plate.
11-7) Backlash exists in the moving
7-A) Irregular stitches occur due to
Check whether there is a backlash and eliminate the back
direction.
pitch fluctuation resulting from
lash if necessary.
variation in speed.
11-8) The stroke of the thread take-up
Move the arm thread guide rightward to reduce the thread
lever is too long.
feeding with the thread take-up lever.
11-9) No reaction is observed from
Use D1113126WA0.
the thread guide bar.
Trouble
Case (1)
Case (2)
Check and Corrective measures
From the previous page
Summary of Contents for DDL-9000A
Page 14: ... 10 4 Feed locus and phase 1 Timing standard 2 Timing fast 3 Timing slow Standard Adjustment ...
Page 32: ... 28 8 Adjustment of the amount of feeding 4 Optional switch Standard Adjustment ...
Page 60: ... 56 11 Thread trimming unit 7 Replacement of the moving knife Standard Adjustment ...
Page 66: ... 62 11 Thread trimming unit 10 Adjustment of the drive arm stopper Standard Adjustment ...
Page 70: ... 66 12 Adjustment of the wiper DDL 9000A WB OB 2mm 1mm Standard Adjustment ...
Page 72: ... 68 13 Adjustment of feed lever pressure B A Feed lever Standard Adjustment ...
Page 112: ...MEMO ...
