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Intermec EasyCoder 501 – Service Manual Ed. 7
Chapter 10 Ribbon Save Device
10.6 Print Unit Assy,
cont.
Description, cont.
When the green headlift knob is turned to “Load” position, the
pressure adjusters are rotated rearwards, allowing the spring to lift
the printhead. The rear pressing roll assy is connected to the print-
head shaft via a linkage, so the pressing rollers are rotated back and
up from the rear drive roller, so as to allow media load.
The rear drive roller is driven by the same belt and stepper motor
as the fplaten roller and fi tted to the gables of the print unit in a
fashion similar to the platen roller.
Rear Drive Roller Replacement
To replace the rear drive roller, you must remove the stepper motor,
belt and pulley as well as the lower plastic guide plate. When fi tting
back the pulley, make sure that the distance between the side of the
pulley and the inner gable of the print unit is 5 mm (0.2 inches).
Belt
(to Platen Roller and
Stepper Motor)
Pulley
Linkage
Inner Gable
Rear Drive Roller
Printhead Unit
To Headlift Knob
Pressing Roller assy.
Spring
Pressure Adjuster
Pressure Adjuster