Micro
ARE-M Series 24V Chargers, Single Phase
Maintenance
PM990-1070-24, Issue 12
6-23
6.10
KEYPAD
The front panel 4-button keypad can be replaced. Be sure a replacement part is on hand before beginning the
following procedure.
IMPORTANT:
Carefully align the replacement keypad with the 2-line LCD display and LEDs before allowing
the keypad to contact the front panel. The replacement keypad cannot be repositioned once its adhesive back
has contacted the front panel surface.
Minor misalignment will not affect front panel use. A larger misalignment may interfere with reading the 2-line
display and LEDs.
To replace the keypad:
1.
Disconnect the keypad ribbon cable from the Control and Display Board.
2.
Carefully lift a corner of the failed keypad and peel the keypad from the front panel. (Note: The hole that
the ribbon cable went through.) Remove any adhesive residue with denatured alcohol or other compatible
solvent.
3.
Check the alignment of the replacement keypad with the 2-line LCD display and LEDs. Masking tape can
be used to mark the exact location of one edge of the keypad. Achieve vertical and horizontal alignment
before proceeding. See the IMPORTANT note above.
4.
Peel the protective backing from the replacement keypad.
5.
Place the ribbon cable through the hole identified in step 2.
6.
Without allowing the keypad to touch the front panel, carefully align the keypad with your alignment
indicators and the 2-line LCD display and LEDs. When aligned, press the keypad against the front panel.
7.
Gently press all areas of the keypad against the front panel using only your hand. Be sure the four corners
and four edges have adhered to the front panel.
