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Users Manual Model 686 / 686 HT
Adjustments / Maintenance
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49
Print Head Adjustment
Clean Platen Roller
You may determine if the print head has been adjusted properly by performing a test
pattern as documented under Control Buttons in this manual. A properly adjusted
print head will produce an even grid of rectangles when the test pattern is performed.
Before making any judgments as to the quality of the print head, it is absolutely
necessary to ensure that the platen roller and the printhead is clean of all
debris.
Clean the platen roller located immediately beneath the print head with a
clean cloth and a small amount of alcohol. The Velcro head-cleaning pad may also
be used to clean heavy build up. Be careful not to damage the platen roller while
cleaning. If the roller is worn, replace the roller.
Print Head Tangent Point
No tangent adjust is required in the field.
Print Head Pressure Setting
No Head Pressure adjustment is available.
Squaring the Print Head
The Print Head is squared at the factory.
Stock Feed Roller Adjustment
General
The Drive module is spring-loaded and requires no field adjustment. If you have a
feed problem see trouble-shooting guide in the manual.
Knife Square Adjustment
The knife has an adjustment to square the cut to the stock. To make the adjustment,
loosen the two cap screws, one on top of the knife and one below the knife, using the
3/16” ball driver in the tool kit. Move the knife in the direction desired to square the
cut and retighten.
Summary of Contents for 686 HT
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Page 67: ...Users Manual Model 686 686 HT Electrical Drawings 65 Electrical Drawings...
Page 85: ...Users Manual Model 686 686 HT Assembly Drawings 83 Assembly Drawings...
Page 86: ...84 Assembly Drawings Users Manual Model 686 686 HT Unwind Assembly Drawing...
Page 88: ...86 Assembly Drawings Users Manual Model 686 686 HT Unwind Turnbar Assembly Drawing...
Page 90: ...88 Assembly Drawings Users Manual Model 686 686 HT Contrast Sensor Assembly Drawing...
Page 106: ...104 Assembly Drawings Users Manual Model 686 686 HT Ink Save PC Board Assembly 4 1 5 7 2 6 3...