Epson Stylus Color 1160 - Backlash Value Adjustment for PF Motor

EPSON Stylus COLOR 860/1160 Revision C
Adjustment Adjustment 122
5.2.2 Backlash value Adjustment for PF motor
When you remove or replace the following part, perform this
adjustment.
o PF motor
o Gear 76
o PF Roller Assembly
(When the Gear 76 (& loop scale) is removed with the PF Roller
assembly, this adjustment is required)
This adjustment sets the suitable backlash value between the Gear 76
and the pinion Gear of the PF motor.
The required backlash value is 0.1mm. (over 0mm to less than 0.1mm)
Before you start this adjustment, make sure that the following parts are
removed on the printer mechanism.
o Combination Gear 13.5,30
o Waste Ink pad assembly (As for the removing, refer to the Section
4.2.4.2)
o Left Housing Panel.
o Left Sub Frame
Figure 5-4. Combination Gear 13.5, 30 & PF Encorder Sensor
CAUTION
In case this adjustment is not performed correctly,
following phenomenon will occur.
<<The backlash value is too narrow>>
n The PF motor dose not rotate correctly based on
the defined current value in the firmware. As the
result, paper feed accuracy is lowered.
n It sounds that the Gear 76 and the PF pinion gear is
jarred during the printing.
<<The backlash value is too wide>>
n The PF motor dose not rotate correctly based on
the defined current value in the firmware. As the
result, paper feed accuracy is lowered. Especially,
the printed image will lowered around the bottom of
the paper.
CAUTION
Be careful not damage the Loop scale when the
Combination Gear 13.5, 30 and the PF Encorder
Sensor.
Left Sub Frame
Left Housing Panel
Combination Fear 13.5,30