Precor Experience Series Service Manual page 211

The base Lower PCA
directly executes the commands to control the braking, lift operation, and power ON/OFF.
The LPCA also monitors error conditions and sends the detected error event code inform-
ation to the console.
The LPCA makes use of two main processors: the Master (also referred to interchangeably
as "Major") and Slave (also as "Minor").
Communication Interface Cable
2
Console UPCA to base LPCA communication interface cable wiring diagram.
Generator/Brake system
The EFX700-16 base generator/brake system has changed from previous generation EFXs
and now uses a generator/brake system similar to the AMT machines.
Active Status Light (ASL)
1
Lower Printed Circuit Assembly board; also refered to as the Lower PCA or simply as the
lower board. On treadmills, it is the console to base function interface and the motor con-
troller unit (MCU). On self-powered units, it is the lower PCA console to base function inter-
face.
2
Upper PCA board
Contact Precor Customer Support at support@precor.com or 800.786.8404 with
any questions.
1
(LPCA ) receives machine control commands from the console and
9 Theory of Operation
System Component Overview
Page 202