Epson Stylus PHOTO 890 Service Manual page 126

EPSON Stylus Photo 890/1280/1290
1. Loosen the screw (CBS, 3x6) securing the PF motor assembly to the left frame by
rotating it half.
2. Holding the PF motor assembly, get the pinion mesh the gear 76.
3. Press the gear 76 by the point 2 in the figure below lightly and release it to ensure
the gear comes back to its original position.
2
3
GEAR, 76
Figure 5-5. Checking for Gear Engagement
When pressing the gear 76 together with the PF scale, be careful
C A U T I O N
not to damage or stain the scale.
4) Press the gear by the indicated positions 1 and 3 (each point is 2.5 cm apart from
the point 2) and check that the gear squeaks at each point. If not, start over from
the step 2.
5. Fasten the screw (CBS, 3x6) to secure the PF motor assembly to the left frame.
ADJUSTMENT
1
2
3
PINION
6. Press the gear 76 by the point 2 and release it again to ensure it returns to its
original position.
7. Using a microscope, check for a correct backlash. Backlash at its minimum point
should be 0 - 0.1 mm. If larger, repeat the adjustment.
Figure 5-6. Checking for the Backlash
Adjustment
Revision C
GEAR, 76
0 - 0.1 mm
PINION
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