Avery Dennison SNAP 656 - Manual (Page 60)

54B • •• • Mechanical Trouble Shooting Users Manual Model 656/636
Ink
Problem Probable Cause Corrective Action
Ink wrinkles or will not pull
smoothly.
1) Incorrect adjustment of unwind
roller brake resistance.
1) Adjust knurled knob clockwise as far as
possible without breaking ink or stalling ink
motor. Do not bottom adjustment knob.
Replacement of fiber brake disc may be
required if printer has high hours.
2) Unwind roller and ink take-up
roller misaligned.
1) Align rear edge of ink with rear of print area
(allow approximately 1/8" (3mm) overlap).
Loosen thumb cap screw on ink roll locator
plate and adjust until it touches rear of ink roll
on unwind arbor. Slide rewind core toward
rear of printer until it just contacts plate.
3) Ink buildup on turn bar(s). 1) Clean with alcohol.
4) Incorrect ink width. 1) Use an ink width no wider than stock being
printed. This is especially critical when using a
narrow web with cut down rollers.
Ink rolls loosely on take-up
roller.
1) Take-up roller not turning. 1) Be sure belt is on rear drive sprocket. Be sure
magnetic drive (rear of center frame) can turn
freely. No adjustment for tension is available
or required.
2) Take-up core binding on locator
plate.
1) Move core .015" - .030" (.38mm - .76mm) away
from plate.
3) Excessive back tension. 1) Adjust knurled knob clockwise as far as
possible without breaking ink or stalling ink
motor. Do not bottom adjustment knob.
Replacement of fiber brake disc may be
required if printer has high hours.
4) Take-up roller too full. 1) Remove used ink roll. It is designed to hold
only 1 full roll.