Theory of Operation
About
The treadmill is comprised of two basic system blocks, the console provides the user interface
and operational controls. It contains the
Upper PCA
1
board which sends the control input
information to the base. The base contains and uses the
Lower PCA
2
board to execute
received operational commands. The Lower
PCA
3
returns status and error code information
to the Upper PCA for display and diagnostics.
Console Operation
Basic operation
This section will explain basic operation and functions that apply to all models of consoles. For
specific details about a particular model of console (Standard, P10, P20, P30, P80), refer to
the applicable console service manual.
The supported console models include the P10, P20, P30, P80, and P82 models.
Controls
All consoles provide user input (keypad functions), user display (LED display / user feedback),
automated control (heart rate program, interval program) and service software routines (tests,
settings, and information).
The keypad functions can vary between different console models, however the basic functions
that all consoles have include the Quick Start, Incline (up or down) and Speed (up or down)
functions.
Features
Different console models provide a different set of user features but the basic operation and
servicing software is the dame.
The service software functions exactly the same for all console models. Each console uses the
same service software standard access codes to access the Hardware Validation Tests, Club
Parameter settings, or Information Display modes, see .
The service software also utilizes the same Standard Error Codes in all console models, see .
1
Upper printed circuit assembly; generally refers to the console.
2
Lower printed circuit assembly; generally this refers to the lower board. On treadmills, this is
the motor controller unit (MCU), and on self-powered units, it is the main board in the lower
section.
3
Printed circuit assembly, generally referred to as either an upper PCA or lower PCA.
Contact Precor Customer Support at [email protected] or 800.786.8404 with
any questions.
Page 126
9 Theory of Operation
About
