Epson LS20 Series

Maintenance 7. Arm #3
110 LS20 Rev.4
(6)
Apply the proper tension to the Z belt, and
then secure the Joint #3 motor unit.
Z belt tension:
93 N (9.5 ± 0.75 kgf)
Axial tension (if being pulled): 186 N
To apply tension to the Joint #3 motor unit,
use the bolt at the front of the plate.
M4 Nut
Joint #3
Motor Unit
Plate
M4 Bolt
(6)
-1
Loosen the nut and turn the bolt.
Push in the Joint #3 motor unit plate
slowly.
(6)
-2
After fixing the Joint #3 motor unit,
turn the bolt to leave from the plate.
(6)
-3
Check the tension using the ultrasonic tension meter.
For details, refer to
Maintenance: 7.4 Checking the Timing Belt Tension.
(6)
-4
Repeat the steps (6)
-1 through (6)-3 until you get appropriate tension.
(6)
-5
After the adjustment, put the bolt back to its original position and fix it
with the nut.
(
7)
Connect the connectors
X231, X31.
(8)
Mount the User Plate.
For details, refer to
Maintenance: 3.6 User Plate.
(
9)
Bind the cables with new wire ties at
their original positions as before in
the removal
step (
5). Bind the cables with the clip band.
Do not allow unnecessary strain on
the cables.
(10)
Install the
Arm Top Cover.
For details, refer to
Maintenance: 3.1 Arm Top Cover.
(11)
Execute the calibration of Joint #3.
For details, refer to Maintenance: 13. Calibration.

NOTE