User guide

6 - 2 MC909X User Guide
Keypads
The mobile computer has interchangeable modular keypads. The modular keypads can be changed in the field
as necessary to support specialized applications.
Replacing the Keypad
1. Suspend the mobile computer.
2. Remove the two keypad screws. Slide the keypad down and lift up.
Figure 6-1 Removing the Keypad
3. Replace the keypad and re-attach using the two screws.
CAUTION Do not remove the keypad while the mobile computer is on and do not operate the mobile computer
with the keypad detached. Follow proper Electro-Static Discharge (ESD) precautions to avoid
damaging the MMC and SD card. Proper ESD precautions include, but are not limited to, working on
an ESD mat and ensuring that the operator is properly grounded.
MC9090 keypads are not interchangeable with MC9060 keypads.
Multi Media Card Holder
Keypad
Screws
CAUTION Do not apply more than 4 in-lbs of torque when tightening the keypad screws.