Troubleshooting & repair, Procedure, Keypad removal and replacement – Lincoln Electric IDEALARC SP-250 Manuel d'utilisation
Page 87
F-40
TROUBLESHOOTING & REPAIR
F-40
IDEALARC SP-250
PROCEDURE
NOTE: BEFORE REMOVING THE
KEYPAD, PERFORM THE KEYPAD
RESISTANCE TEST TO BE SURE THE
KEYPAD IS FAULTY.
1.
Disconnect main input power to the
machine.
2.
Remove the Case Top and Side
Panels with 5/16" nut driver.
3.
Disconnect Keypad Plug J2 from the
Control Panel.
4.
Remove the two screws holding the
POWER SWITCH and bezel using a
1/4" nut driver.
5.
Grasp the upper right hand corner of
the Keyboard and peel it off the front
panel.
a.
The back of the Keypad is an
adhesive material that bonds
the Keypad to the Front Panel.
6.
Install a new Keypad.
a.
Remove the paper backing from
the new Keypad to uncover the
adhesive backing.
b.
Install the new Keypad by care-
fully pressing the Keypad to the
Front Panel. Be sure to smooth
out any air bubbles that become
trapped under the Keypad.
KEYPAD REMOVAL AND REPLACEMENT