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Service Guide ML172/ML182 Series
Chapter 3 Printer Maintenance
3.3.2 Space Rack and Roller Gap Adjustment
Required Tools:
Feeler Gauge (.004 inch)
Phillips Screwdriver (#2)
Tension Gauge (250 g)
Adjustment Procedure:
1. Turn the AC Power OFF and remove the AC plug from the power receptacle.
2. Remove the Upper Cover
(3.2.1
).
3. Remove the ribbon cartridge.
4. Insert a 0.004 inch thickness gauge between the Space Rack and the Roller. Make sure that the
thickness gauge can be smoothly inserted, although a small amount of friction is acceptable.
5. If adjustment is required, loosen the three spacemotor mounting screws and move the spacemotor
until the required gap is attained. Tighten the mounting screws.
6. After adjustment, check the gap between the space rack and the roller once more. The gap must be
between 0.002 inch and 0.006 inch.
7. While pulling the carriage with the force gauge (without a ribbon cartridge installed) the carriage
movement load should be 150 g or less.