Epson LS-B Series Maintenance Manual page 304

LS20-B Maintenance 7. Joint #3
Z belt (1) Turn ON the Controller.
Removal
(2) Push down the shaft to its lower limit while pressing the brake release switch. Be sure
(3) Turn OFF the Controller.
(4) Remove the Arm Top Cover.
(5) Remove the clip band and sheet bundling the motor cables.
(6) Disconnect the following connectors.
(7) Remove the User Plate and Duct Plate.
(8) Remove the screws for the Joint #3 motor
290
to keep enough space and prevent the end effector hitting any peripheral equipment.
The brake release switch is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3 and Joint
#4 are released simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is being pressed
because the shaft may be lowered by the weight of an end effector.
For details, refer to 3.1 Arm Top Cover.
Cut off the wire tie fixing the cables to the belt tensioner.
Do not cut the wire tie (in the duct fittings outlet) that binds the cables to the duct
plate.
Removed parts will be used again. Be careful not to lose them.
Duct Plate
Connectors: X231, X43 (Hold the clip to remove.)
For details, refer to 3. Covers.
unit and pull out the Joint #3 motor unit.
The washers for slotted holes will be used
again when installing the Z belt.
careful not to lose them.
Clip Band
Silicon Sheet
Wire Tie
Be
Duct Plate
Clip Band
User Plate
Belt Tensioner
Joint #3
Motor Unit
3-M5×20
+ washer for
slotted hole
LS-B series Maintenance Rev.1