Procedure 6.2 - Troubleshooting the Keypad and Upper PCA
If the function keys on the electronic console are unresponsive, the problem may be either the
upper PCA or keypad.
Procedure
1. Set the on/off switch in the “off” position.
WARNING
Before continuing with this procedure, review the Warning and Caution statements listed in
Section One.
2. If the EFX powers up and functions normally until a particular key(s) is pressed, skip to step
10. If the display is unresponsive immediately when the EFX is powered up, continue with
the next step.
3. This condition may be caused by either the keypad or upper PCA. Set the on/off switch in
the “off” position. Remove the display assembly. Disconnect heart rate cable and the data
cable from the Upper PCA. See Diagram 6.1.
4. Remove the eight screws that fasten the display housing front panel to the display housing
back panel.
5. Lift the display housing front panel off of the display housing backing plate. Remove the
keypad cable from the upper PCA. See Diagram 6.1.
Diagram 6.1 - Upper PCA & Keypad
Keypad
Connector
Connector
Connector
Heart Rate
Data Cable
Upper
PCA
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