Precor c944 User Manual

C944 Treadmill
Page 1
C944 Treadmill
Warning: This service manual is for use by Precor trained service providers only.
If you are not a Precor Trained Servicer, you must not attempt to service any Precor Product;
Call your dealer for service.
This document contains information required to perform the majority of troubleshooting, and
replacement procedures required to repair and maintain this product.
This document contains general product information, software diagnostic procedures (when
available), preventative maintenance procedures, inspection and adjustment procedures,
troubleshooting procedures, replacement procedures and electrical block and wiring diagrams.
To move directly to a procedure, click the appropriate procedure in the bookmark section to the
left of this page. You may “drag” the separator bar between this page and the bookmark section
to change the size of the page being viewed.
© 2003 Precor Incorporated
Unauthorized Reproduction and Distribution Prohibited By Law

Precor c944 Specifications

General

Brand	Precor
Model	c944
Category	Treadmill
Language	English

Summary

Section One - Things You Should Know

About This Appendix

Provides an overview of the manual's structure and content.

Section Two - Software Features

Section Two, Software Features

Details diagnostic and setup features of the treadmill.

Procedure 2.1 - Accessing the Diagnostic Software

Steps to enter and navigate the treadmill's diagnostic software modes.

Procedure 2.2 - Displaying the Treadmill Odometer

How to view the total distance the treadmill has operated.

Procedure 2.3 - Changing Club Settings

Instructions for modifying club settings like units and max workout parameters.

Procedure 2.4 - Documenting Software Problems

Guide on recording information when software or PCA issues occur.

Section Three - Checking Treadmill Operation

Section Three - Checking Treadmill Operation

Provides a quick method for checking treadmill operation after maintenance.

Section Four - Inspection and Adjustment Procedures

Procedure 4.1 - Calibrating the Lift Limit Switches

Detailed steps for calibrating the treadmill's lift limit switches.

Section Five - Troubleshooting Procedures

Procedure 5.1 - Troubleshooting the Keypad and Upper PCA

Diagnosing issues with unresponsive keys or the upper PCA.

Procedure 5.2 - Troubleshooting the Lift System

Steps to diagnose and fix problems with the treadmill's lift system.

Procedure 5.3 - Troubleshooting the Speed Sensor

Guide to troubleshooting issues related to the treadmill speed sensor.

Procedure 5.4 - Troubleshooting the External A.C. Power Source

How to check and ensure proper AC power source for the treadmill.

Section Six - Replacement Procedures

Procedure 6.1 - Replacing the Lift Motor, Rotation Sensor or Magnet Hub

Instructions for replacing lift motor, rotation sensor, or magnet hub components.

Procedure 6.2 - Replacing the Limit Switches, Actuator Shaft or Switch Bracket

Steps to replace limit switches, actuator shaft, or switch bracket assembly.

Procedure 6.3 - Replacing the Lift Motor Capacitor

Guide for replacing the lift motor capacitor.

Procedure 6.4 - Replacing the Lift Platform

Instructions on how to remove and replace the treadmill lift platform.

Procedure 6.5 - Replacing the PROM

Steps for safely replacing the Programmable Read-Only Memory (PROM).

Section Seven - Technical Diagrams and Parts Lists

Wiring Diagram 7.1 - C944 SCR 120 Vac

Schematic showing electrical connections for the SCR 120 Vac model.

Block Diagram 7.2 - C944 SCR 120 Vac

Functional overview of the SCR 120 Vac treadmill system components.

Wiring Diagram 7.3 - C944 SCR 240 Vac

Schematic showing electrical connections for the SCR 240 Vac model.

Block Diagram 7.4 - C944 SCR 240 Vac

Functional overview of the SCR 240 Vac treadmill system components.

Wiring Diagram 7.5 - C944 PWM 120 Vac

Schematic showing electrical connections for the PWM 120 Vac model.

Block Diagram 7.6 - C944 PWM 120 Vac

Functional overview of the PWM 120 Vac treadmill system components.

Wiring Diagram 7.7 - C944 PWM 240 Vac

Schematic showing electrical connections for the PWM 240 Vac model.

Block Diagram 7.8 - C944 PWM 240 Vac

Functional overview of the PWM 240 Vac treadmill system components.