Bearings At Ends Of Support Shaft; Purge Unit And Bottom Case Assembly; Securing Idler Pulley Assembly Screw - Canon QY8-1360-000 Service Manual

BJC-7100

4.2.3 Bearings at ends of support shaft

The two bearings at the end of the support shaft are secured by fixing screws in placed
after being positioned at the factory. Never disassemble these bearings (except for head
gap adjustment). Red fixing screws are used to distinguish them form other screws.
The bearings need not be removed to remove the carriage.

4.2.4 Purge unit and bottom case assembly

When the purge unit is assembled with the bottom case, check that the two tubes from
the purge unit lead to the ink absorbers. Take care when assembling that the ends of
the tubes are clear; ink drying in the tubes would hinder purging.

4.2.5 Securing idler pulley assembly screw

If you have loosened the idler pulley assembly screw, as when removing the carriage,
you must use the special tension spring (QY9-0046) when reassembling.
Before tightening the screw, move the carriage horizontally several times to equalize
the belt tension. *
After tightening the screws, remember to remove the tension spring.
Screw
Figure 5-4 Bearings at Ends of Support Shaft
Red Marks
Figure 5-5 Purge Unit and Bottom Case Assembly
Idler Pulley Assembly
Tension Spring
Carriage Belt
a
Figure 5-6 Tightening Idler Pulley Assembly Screw
Support Shaft
Waste Ink Absorber
Upper: Ink Tube
Ink Optimizer Absorber
Lower: Ink Optimizer Tube
* : See CAUTION on Page 1-14.
5-5
Part 5: Maintenance
Red Screw
Head Alignment Adjuster Plate