Life Fitness Model 4000 Treadmill
TABLE OF CONTENTS
INTRODUCTION (How to use this Service Manual)
TABLE OF CONTENTS

SECTION I PAGE

THEORY OF OPERATION 1
TROUBLESHOOTING GUIDES
NO POWER.....................................................................................................................2
NOISY TREADMILL......................................................................................................... 3
STRIDING BELT.............................................................................................................. 4
UNIT RESETS RANDOMLY............................................................................................ 5
DISPLAY DOES NOT ILLUMINATE OR RESPOND TO INPUT....................................... 6
UNIT WILL NOT ELEVATE..............................................................................................7
ERROR DISPLAY MESSAGES....................................................................................... 8
HEART RATE DOES NOT RESPOND ............................................................................9
( If Equipped with Optional Heart Rate Kit Tray )

SECTION II

DIAGNOSTIC TESTS...................................................................................................................1-4

SECTION III

How To...REMOVE AND REPLACE THE
VENT COVER..................................................................................................................1
MOTOR COVER.............................................................................................................. 2
DISPLAY CONSOLE .......................................................................................................3
HANDLEBAR AND HANDRAILS...................................................................................... 4
DECK AND STRIDING BELT........................................................................................... 5
How To...ADJUST AND TENSION THE STRIDING BELT.......................................................... 6-8
FRONT ROLLER ASSEMBLY .........................................................................................9
REAR ROLLER ASSEMBLY............................................................................................ 10
HEATSINK CONTROL BOARD ASSEMBLY ...................................................................11,12
DISPLAY WIRE HARNESS............................................................................................. 13
LIFT ACTUATOR ASSEMBLY......................................................................................... 14
DRIVE MOTOR BELT...................................................................................................... 15,16
DRIVE MOTOR ASSEMBLY............................................................................................ 17,18
LIFESPRINGS................................................................................................................. 19
TRAY ( Optional Heart Rate Kit )......................................................................................20

SECTION IV

WIRING DIAGRAM...................................................................................................................... 1
PARTS IDENTIFICATION............................................................................................................ 2-4
COMMUNICATING BY FAX......................................................................................................... 5,6