Replace the I/O Expander

To replace the I/O expander, complete the steps in this chapter.

Required Tools and Materials

Tools and Materials

	Head lamp		T25 Torx security screwdriver
	ChargePoint replacement part #CPE250-FRONT-PANELS-F

Before you Begin

Complete the following procedures:

1. Power Off the Station.

2. Remove the Area Light Bar.

3. Remove the LED Display.

4. Remove the Top Front Panel.

Remove the I/O Expander Unit

1. Use a T25 Torx driver to remove the M5 screw and washer attaching each touchscreen ground strap to the frame. Keep the screws and washers for reuse.

   

2. Loosen both retention knobs (a), allowing the touchscreen beam (b) to slide up vertically and the touchscreen’s bottom edge to clear the middle vent panel’s slot (c).

3. With hand pressure, tilt the touchscreen upward at a 45-degree angle.

   

4. Allow the touchscreen to return to its lowest position vertically. Rotate the retention knobs clockwise to re-tighten.

   The bottom edge and corners of the touchscreen are sharp. Take care when moving underneath the raised screen.

5. Locate the I/O expander under the touchscreen on the right side of the mount rail (a).

   Observe the wire routing before removing the unit.

   

6. Each cable on the unit has a tab that locks it into position. Disconnect each of the cables by pushing its tab to release:

   

   • CAN A

   • CAN B

   • 24 V

   • Hall Effects Sensors

   • Surge

   • Temp

   • E-Stop

7. Pull the two plastic tabs below the I/O expander unit to release the unit.

   

8. Pull the I/O expander unit upward to release it from the top rail, then toward you to remove it.

Replace the I/O Expander Unit

1. Hang the I/O expander unit temporarily on the top rail.

2. Reconnect its cables according to the labels on the unit cover.

3. Align cable routing behind the unit to ensure it can be pushed from the bottom of the unit on each side. Push until it snaps into place on the bottom rail.

Ensure all cables are flat against the rail bar and are not being pinched.