SportsArt Fitness 8300 Operating instructions

8300 and E8300 Elliptical Trainer
Repair Manual (Electronics)
USA Version 2
09-13-04

8300 Repair Manual (Electronics)
This troubleshooting guide was made through the cooperation of SportsArt personnel in the USA and Taiwan.
Our goal is to provide clear, useful troubleshooting information for technicians in the field. If you have questions, comments or
suggestions, please contact Bob Baumgartner at SportsArt America. Thank you.
E-mail: [e-mail]
Tel: [phone] ext. 115
8300 Elliptical Trainer Troubleshooting Manual
Version 1: April 2002
Version 2: September 13, 2004 - Minor changes were made to reflect the new E8300.
00

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents
Introduction
INTRO.01 – Electronic Part Locations
INTRO.02 – Operating the Unit – Power Supply, Start Up, Turn Off, KG/LB
INTRO.03 – Display Functions
INTRO.04 – Basic Operation – Features, Feedback
INTRO.05 – Basic Operation – Programs
INTRO.06 – Control Modes
INTRO.07 – Component Relationships Diagram
INTRO.08 – Power Part Illustration
INTRO.09 – General Electronics Operation
Generator
GEN.01 – Voltage and Signal Flow – General
GEN.02 – Power Part Illustration
GEN.03 – Generator Power Supply Diagram
GEN.04 – Generator Power Supply Illustration
GEN.05 – Generator Power Supply and Start Up Process
GEN.06 – Generator Troubleshooting – Symptoms of Malfunction, Voltage Test
GEN.07 – Generator Voltage Test – Location: Drive Board CN1 Connector
GEN.08 – Generator Voltage Test Process – Troubleshooting Tips
(Continued on next page.)
CNTNTS.01

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Optic Sensor
OS.01 – Optic Sensor Operation Diagram
OS.02 – Optic Sensor Signal Illustration
OS.03 – Optic Sensor Operation
OS.04 – Optic Sensor Test Illustration (Distance, Upper Wires)
OS.05 – Optic Sensor Signal and Voltage Test at Drive Board CN1 Connector – Illustration
OS.06 – Test Procedure
Battery
BAT.01 – Start Up Process – Diagram, Explanation
BAT.02 – Battery Operation Illustration
BAT.03 – Manual Shut Off Operation,Automatic Shut Off Operation – Explanation, Illustration
BAT.04 – Message: Service Battery – Operation, Troubleshooting, Signal Diagram
BAT.05 – Symptoms of Low Battery Voltage, Simulation, Troubleshooting
BAT.06 – Battery Test at Drive Board CN4 Connector, Test Procedure
Display – Wiring, Signal, Power
DIWSP.01 – Soft Key Signal Flow Diagram and Explanation
DIWSP.02 – Display Keypad and Handle Switch Signal Flow
DIWSP.03 – Wire Connections for Display Board with HRC + HTR
DIWSP.04 – Display Board HTR Board Wire Connections Illustration
DIWSP.05 – Display Wiring Connections toAll Parts Illustration
(Continued on next page.)
CNTNTS.02

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Display – Wiring, Signal, Power (Cont.)
DIWSP.06 – Display Board Main CPU Location
DIWSP.07 – Display Board LED Locations and Functions
DIWSP.08 – Display Board Power LED Location
DIWSP.09 – Display Board VCC Voltage Test – Capacitor
DIWSP.10 – Display Board Power Issue Troubleshooting
Drive Board – Wiring, LED, Power
DRWLP.01 – Drive Board Wire Connections
DRWLP.02 – Drive Board Component Placement
DRWLP.03 – Drive Board LED Indicators: Incline and Optic Sensor
DRWLP.04 – Drive Board LED Indicators: Incline and Battery
DRWLP.05 – Drive Board LED Indicators: Stride, CLK, Power
DRWLP.06 – Symptoms of Malfunction, Troubleshooting
DRWLP.07 – Drive Board Voltage Definitions
DRWLP.08 – Drive Board VH Voltage Test
DRWLP.09 – Drive Board VDD Voltage Test
DRWLP.10 – Drive Board +5V Voltage Test
DRWLP.11 – Drive Board VCC Voltage Test
(Continued on next page.)
CNTNTS.03

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Resistance
RES.01 – Load Resistance Operation Diagram
RES.02 – Resistance Operation
RES.03 – Resistance Operation Illustration
RES.04 – Symptom of Malfunction, Troubleshooting
RES.05 – Drive Board VDD Test
RES.06 – Voltage Test at Drive Board CN1 Connector
RES.07 – OHM Test at the Magnet
Heart Rate Function
HR.01 – Heart Touch Rate (HTR) Operation Diagram, Operation
HR.02 – POLAR Heart Rate Operation Diagram, Explanation
HR.03 – Heart Touch Rate Board, Heart Touch Rate Board LED Indicator Definitions
HR.04 – Error Message: ERR12, ERR12 Troubleshooting Chart
HR.05 – Possible Heart Rate Malfunction, Troubleshooting Chart
Stride Operation
STRIDE.01 – Stride Operation Diagram
STRIDE.02 – Stride Operation Illustration
STRIDE.03 – Stride Power Operation
STRIDE.04 – Stride LED Indicators on the Drive Board - Power, +22V, CLK
STRIDE.05 – Stride Up/Down Operation
STRIDE.06 – Stride LED Indicator on the Drive Board – R_DN, L_DN, R_UP, L_UP
STRIDE.07 – Stride VR Feedback Process
(Continued on next page.)
CNTNTS.04

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Stride Operation (Cont.)
STRIDE.08 – Stride Motor Protective Function
STRIDE.09 – Stride Motor Protective Function – Drive Board Indicators
STRIDE.10 – Stride Protective Function LED Operation – When Malfunction Occurs
STRIDE.11 – Stride VR Protective Function
STRIDE.12 – Stride VR Protective Function – Drive Board Indicators
Stride Window Flashes
SWF.01 – Error Message: Stride Window Flashes, Diagram
SWF.02 – Stride Signal and Voltage Illustration
SWF-S.01 – Stride Window Flashes – Speed
SWF-S.02 – Stride/Speed Operation Illustration
SWF-S.03 – Operation Flow Chart
SWF-S.04 – Operation Flow Chart, Cont.
SWF-S.05 – Troubleshooting
SWF-NSO.01 –Stride Window Flashes – No Stride Operation
SWF-NSO.02 – Stride Window Flashes – No Stride Operation – Flow Chart
SWF-NSO.03 – Stride Window Flashes – No Stride Operation – Flow Chart (Cont.)
SWF-NSO.04 – Stride Window Flashes – No Stride Operation – Flow Chart (Cont.)
SWF-NSO.05 – Stride Window Flashes – No Stride Operation – Troubleshooting
SWF-VRER.01 –Stride Window Flashes – VR Exceeds Range - Diagram
SWF-VRER.02 – Stride Window Flashes – VR Exceeds Range – Illustration
SWF-VRER.03 – Stride Window Flashes – VR Exceeds Range – Operation
SWF-VRER.04 – Stride Window Flashes – VR Exceeds Range – Operation Flow Chart
SWF-VRER.05 – Stride Window Flashes – VR Exceeds Range – Troubleshooting
(Continued on next page.)
CNTNTS.05

SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Error Message: ERR7
SERS.01 – Error Message: ERR7, Symptoms of Malfunction
SERS.02 – VR Signal Operation
SERS.03 – ERR7 Operation
SERS.04 – ERR7 Operation Flow Chart
SERS.05 – ERR7 Simulation, Troubleshooting
Stride Test Points
STRDTST.01 – Drive Board +22V Test
STRDTST.02 – Drive Board +22V Circuit Test, Symptom of Malfunction
STRDTST.03 – Stride Motor Power at Drive Board – Motor 1
STRDTST.04 – Stride Motor Power at Drive Board – Motor 2
STRDTST.05 – Instructions for Testing Stride Motor Power at the Drive Board, Symptom of Malfunction
STRDTST.06 – Stride Motor Voltage Test at the Shoulder, Illustration
STRDTST.07 – Stride Motor Voltage Test at the Shoulder, Instructions
STRDTST.08 – VR Output Test at the Drive Board – VR1
STRDTST.09 – VR Output Test at the Drive Board – VR2
STRDTST.10 – VR Output Test at Drive Board, Instructions, Symptom of Malfunction
STRDTST.11 – VR Voltage at the Shoulder, Illustration
STRDTST.12 – VR Voltage Test at the Shoulder, Instructions, Symptom of Malfunction
STRDTST.13 – VR Voltage Test Summary at the Shoulder, Test Procedure, Symptom of Malfunction
(Continued on next page.)
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SportsArt - 8300 Repair Manual (Electronics) - Contents
Table of Contents (Cont.)
Stride Set Calibration
STRDCAL.01 – Stride Set Calibration, Steps 1-2
STRDCAL.02 – Stride Set Calibration, Steps 3-4
STRDCAL.03 – Stride Set Calibration, Step 5
STRDCAL.04 - Stride Set Calibration, Step 6-7
Reference
REF.01 – Voltage Specs – Display and Drive Boards
REF.02 – Voltage Specs – Drive Board CN1 Connector (Generator, Optic Sensor, Magnet), Magnet Tests
REF.03 – Stride Set Voltages at the Shoulder Joint, Stride Set Voltages at CN2 Connector
REF.04 – Generator and Magnet Voltages (Voltage Observations under Various Conditions)
REF.05 – Drive Board LEDs, Illustration
REF.06 – Drive Board LEDs, Explanation
REF.07 – Drive Board LEDs, Explanation, Cont.
CNTNTS.07

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Introduction
INTRO.01 – Electronic Part Locations
INTRO.02 – Main Features, Power Supply, Start Up, Turn Off, KG/LB
INTRO.03 – Display Features
INTRO.04 – Feature Overview
INTRO.05 – Programs
INTRO.06 – Control Modes
INTRO.07 – Component Relationships
INTRO.08 – Power Parts
INTRO.09 – General Operation, Stride and Level Keys, Programs/Intervals, Battery, Stride VR
INTRO.00

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Electronic Part Locations
INTRO.01
Cover
STRIDE Key
LEVEL Key
Display
STRIDE Set (Left)
(VR and Motor Set)
STRIDE Set (Right)
(VR and Motor Set)
HTR Handlebar (right)
HTR Handlebar (left)
Note: The E8300 display differs from the 8300. All other parts are the same.
For brevity sake, in this manual, 8300=E8300. In the section on display
operation, only the 8300 is shown. For E8300 display information, refer to
notes marked E8300.Also, refer to the product user manual.

SportsArt - 8300 Repair Manual (Electronics) – Introduction
Main Features
The 8300 Elliptical Trainer is one of the first adjustable stride elliptical trainers on the commercial market. Features include
adjustable resistance level, calorie count, heart rate control, 12 exercise programs and two interval programs.
The E8300 incorporated an improved dot-matrix display and some added setting functions.
Power Supply
Generator-powered unit must be operated at 25 steps per minute or more to get stride function. STEP TO START appears on
display if exercise speed is too slow for generator operation.
Start Up
There are two ways to start the 8300 Elliptical Trainer: (1) Generator Start: Exercise on the unit; (2) Battery Start: Press display
ON key.
Turn Off
There are two ways to turn off the unit:
(1) Automatic - Don’t exercise on the unit. Within 80 seconds, display shuts off.
(2) Manual - 8300: Simultaneously press MODE DOWN and STRIDE DOWN keys on the display for three seconds. Display
shuts off. E8300: Simultaneously press STOP/PAUSE, ENTER, and resistance DOWN keys for three seconds.
KG/LB - Metric or American Standard
On 8300, simultaneously press MODE UP and DOWN keys. The display shows KG or LB. Press MODE key once. Press Mode
UP or DOWN keys to toggle between the two choices, then press ENTER to confirm your selection. On E8300, at the startup
screen (“E8300” appears), simultaneously press LEVEL UP and DOWN keys. “PRESS TO SELECT MODIFY HRC TARGET HR,
PRESS ENTER” scrolls across the dot matrix window. “YES” or “NO” appears in the heart rate window. Press UP or DOWN keys
to toggle between choices. Pressing the “YES” key allows you to change the heart rate setting beyond the preset range. Press
the ENTER key to confirm your choice. “PRESS UP DOWN TO SELECT LB/KG” scrolls across the display. LB or KG appears.
Press UP or DOWN keys to toggle. Press the ENTER key to confirm your choice.
INTRO.02

SportsArt - 8300 Repair Manual (Electronics) - Introduction
INTRO.03
Main Window
ÎShows operation mode or
instructions
Calorie Window
ÎShows calorie expenditure
STEPS/MIN Window
ÎShows speed as steps per
minute
STRIDE Window
ÎShows stride setting
TIME and STEPS Window
ÎWhen TIME is lit, time shows
ÎWhen STEP is lit, step count shows
LEVEL Window
ÎShows resistance level
HEART RATE Window
ÎShows the POLAR or HTR heart
rate value
Note: E8300 display differs and is not shown here. Please refer to the product user manual for details.
Display Features

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Feature Overview
The 8300 Elliptical Trainer features adjustable stride and resistance levels, provides user feedback including calorie count, step
count, heart rate, time in use, and offers three control modes including manual, exercise programs and interval programs.
Features Operation Specifications
Stride Adjust Press STRIDE UP/DOWN keys on display or
press handlebar STRIDE switch. Requires 25
SPM to operate. If under 25 SPM, message
appears: NO STRIDE ADJUST UNDER 25
SPM.
17-26 inches (450-650 cm). At 17 inches, black stride linkage is
in lowest position on the stride support assembly; stride length is
smallest. At 26 inches, black stride linkage is in highest
position on the stride support arm; stride length is largest.
Level Adjust Press LEVEL UP/DOWN keys on display or
press LEVEL switch on handlebar. 1-20 resistance levels. 1 is least resistance; 20 is highest resistance.
Feedback Operation
Calorie Count Appears automatically (TIME, LEVEL, WEIGHT, STRIDE used as factors; See SET mode.)
Step per Minute (SPM) Appears automatically (If under 25 SPM, display shows “STEP TO START.”)
Time in Use Time value appears in Time/Steps window when TIME indicator lights. Press MODE key to toggle
between TIME and STEP modes. For time count down, in TIME mode press TIME UP and DOWN
keys simultaneously. At 0, display “beeps” once.
Step Count Step count appears in Time/Steps window when STEP indicator lights. To toggle between TIME and
STEP, press MODE key. For step count down, in STEP mode press STEP UP and DOWN keys
simultaneously. At 0, display “beeps” once.
Heart Touch Rate (HTR) Hold onto heart touch rate handlebar; HTR value appears in 30 seconds.
POLAR Heart Rate Strap on POLAR transmitter; Heart rate value appears in 30 seconds.
INTRO.04

SportsArt - 8300 Repair Manual (Electronics) - Introduction
INTRO.05
MANUAL/SET
PROGRAM 1- 6
PROGRAM 7-12
PROGRAM
INTERVAL
ENTER
Programs

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Control Modes
Press MANUAL/SET key to toggle between MANUAL, SET and HRC prompts. Press ENTER to confirm your choice.
Control
Modes Operation
Manual
(default) In MANUAL mode, press display keys or handlebar switches to directly set STRIDE and LEVEL values.
Heart Rate
Control Heart Rate Control provides an optimum workout by automatically adjusting stride and level functions to
maintain a workout at the user’s heart rate target.
Press UP/DN keys to toggle between FAT/CARDIO modes. Press ENTER to confirm your selection. Follow
prompts. Press UP/DOWN keys to input information, then press ENTER to confirm your selection.
Set
Press UP/DOWN keys to select weight, then press ENTER to confirm your selection. Weight is used in calorie calculations.
Program Operation
Program 1-12
(previously set
courses)
Press PROGRAM key repeatedly to toggle to exercise programs 1-12. Press ENTER to confirm your selection.
Follow prompts: press UP/DN keys to locate options, then press ENTER to confirm your choice.
INTVL
(user-made
courses)
Press INTERVAL key to toggle between INTV1 and INTVL2. Press ENTER to confirm your choice.
INTVL1 has REST and WORK modes, with TIME, LEVEL and STRIDE settings.
INTVL2 has eight segments, with LEVEL and TIME settings.
Follow prompts to input information. Press UP/DOWN keys to locate your preferences, then press ENTER to
confirm your choice.
INTRO.06

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Component Relationships
Display Board
Drive Board
Generator
Battery
Magnet
Optic Sensor
STRIDE
Incline Motor
(Left)
VR Value (Left)
STRIDE
Incline Motor
(Right)
VR Value (Right)
STRIDE
Switch
LEVEL
Switch
18 PIN
Motor
Voltage VR1 Motor
Voltage VR2
CLK
Magnet
Voltage
Generator
Voltage
Battery
Voltage
HTR Handlebar
POLAR HR
Transmitter
HTR
PULSE
LEVEL
STRIDE
INTRO.07

SportsArt - 8300 Repair Manual (Electronics) - Introduction
Power Parts
INTRO.08
Magnet+Flywheel
Generator
Drive Board
Battery
Optic Sensor

SportsArt - 8300 Repair Manual (Electronics) - Introduction
General Operation
1) Exercise on the unit. The flywheel spins.
2) Flywheel movement makes the generator produce power.
3) Flywheel movement makes the reflective sticker on the flywheel move.
4) The optic sensor detects the movement and sends its signal to the drive board.
5) The drive board sends its signal to the display.
4) The display shows steps per minute.
Stride and Level Keys (Manual Control)
1) The user presses a display or handlebar STRIDE or LEVEL key.
2) The signal travels from the display board down the 18-pin cable to the drive board.
3) The drive board distributes power to the stride motor or magnet.
4) Power to the stride motor causes it to operate up or down. Power to the magnet creates pull on the flywheel, producing
resistance.
Programs / Intervals (CPU Control)
Basically operate the same as above, except that the CPU sends commands to the drive board, which then produces power for
the stride motor or magnet.
Battery
Provides temporary power supply, so that when the user presses the display ON key, the display operates. Power from the
generator, through the drive board, recharges the battery during use.
Stride VR
As the stride motor operates, the variable resistor (VR) gear turns. Gear movement changes voltage. The voltage signal travels
to the drive board and up the 16-pin cable to the display. When the VR voltage matches the display setting, the CPU cuts off the
power signal to the drive board, which then shuts off voltage for motor operation.
INTRO.09

SportsArt - 8300 Repair Manual (Electronics) - Generator
Generator
GEN.01 – Voltage and Signal Flow – General
GEN.02 – Power Part Illustration
GEN.03 – Generator Power Supply – Diagram
GEN.04 – Generator Power Supply – Illustration
GEN.05 – Generator Power Supply and Start Up Process
GEN.06 – Generator Troubleshooting, Voltage Testing, Test Procedure
GEN.07 – Generator Voltage Test – Location: Drive Board Connector
GEN.08 – Generator Voltage Test Process, Troubleshooting Tips, Generator Voltage Observations
GEN.00