Horizon Fitness RST 5.6 Sears Treadmill Service Instruction Manual
- June 17, 2024
- HORIZON FITNESS
Table of Contents
Horizon Fitness RST 5.6 Sears Treadmill Service Instruction Manual
Elevation Troubleshooting
No Motor Movement Troubleshooting
Erratic Speed Troubleshooting
Auto Calibration Troubleshooting
Console/Upper Board Troubleshooting
Membrane Key Pad Overlay Troubleshooting
Safety Key/Reed Switch Troubleshooting
Heart Rate Troubleshooting
Heart Rate Troubleshooting
Problem: There is no heart rate reading.
Solution: Remove the console and verify that the heart rate cables are
attached properly, not damaged, cut or pinched, making sure that the cables
are securely inserted into the console.
Check your exercise environment for sources of interference such as large motors from other appliances, security/intercom systems, fluorescent lights, cordless phone, etc.
- Gripping the heart rate handlebars too tight. Try to maintain moderate pressure while holding onto the heart rate handlebars.
- Constant movement and vibration due to constantly holding the heart rate grips while exercising, try stopping your workout while taking pulse.
- When you are breathing heavily during a workout.
- When your hands are constricted by wearing a ring.
- When your hands are dry or cold. Try moistening your palms or rubbing them together to warm.
- Anyone with heavy arrhythmia.
- Anyone with arteriosclerosis or peripheral circulation disorder.
- Anyone whose skin on the measuring palms is especially thick.
NOTE: Outside interference sources such as computers, motors and fluorescent lights may cause the heart rate reading to be erratic.
Proper use instructions
Handlebars
Place the palm of your hands directly on the grip pulse handlebars. Both hands
must grip the bars for your heart rate to register.
It takes 5 consecutive heart beats (15-20 seconds) for your heart rate to
register. When gripping the pulse handlebars, do not grip tightly. Holding the
grips tightly may elevate your blood pressure. Keep a loose, cupping hold. You
may experience an erratic readout if consistently holding the grip pulse
handlebars. Make sure to clean the pulse sensors to ensure proper contact can
be maintained.
Circuit Breaker Troubleshooting
Engineering Mode
Treadmill Engineering Menu Definition
General
- Hold Incline + and Speed – for 3 seconds
- Speed +/- navigates once entered
- Enter Selects modes
- Hold Stop for three seconds to exit modes
- Defaults to Eng0
- Defaults to scrolling “ENGINEERING MENU”
o Will scroll “DISPLAY TEST” if navigated back to Eng0
Eng0 (Display Test)
- The information portion of the display will show “Eng0”
- The matrix will scroll “DISPLAY TEST”
- When selected, all display segments should be on
- When pressed, each button will beep and have a unique display change
o Stop turn all display segments off
o Start turns all display segments on
o If there is scrolling speed and incline, the display will scroll the speed or incline when the quick keys are pressed
Eng2 (Auto Calibration)
- The information portion of the display will show “Eng2”
- The matrix will scroll “AUTO CALIBRATE”
- After entered, press Start to begin
- There should be no excessive speed overshoot
- The Engineering Menu will be exited upon successful completion
Eng3 (Switch Function)
-
The information portion of the display will show “Eng3”
-
The matrix will scroll “SWITCH FUNCTION”
-
Start selects miles or km
o The display will show “0” for miles or “1” for km
o The display will scroll “MILES” or “KM” when Start is pressed to change
o The new setting is automatically saved when Start is pressed, no other buttons need to be pressed to save -
Enter changes the model, if applicable
o The new setting is automatically saved -
If the treadmill has a Demo Mode then Eng3 will also have the following:
(T73, T74, 2.3T, 3.3T, 5.3T T4, T6, LS925T, RCT7.6, 30519, 620T, 720T, 730T, 820T, 830T, 930T)
o The Brickyard will scroll “DEMO ON” or “DEMO OFF”.
o The default will be “DEMO ON”.
o The +/- buttons will change between the Demo On and Demo Off settings.
o The mile/ km will continue to function as normal.
Eng4 (Information)
-
The information portion of the display will show “Eng4”
-
The matrix will scroll “INFORMATION”
-
Once entered, the display will scroll “ACCUMULATED TIME”
o “F00” will appear in the information portion of the display along with the accumulated time -
Speed or Incline +/- will switch between the accumulated time and distance
-
When changed , the display will scroll “ACCUMULATED DISTANCE”
o “F01” will appear in the information portion of the display along with the accumulated distance in miles or km depending upon current setting
Note 1: There should be no Manual Calibration. This function is not needed
Note 2: There should be no Roller Diameter Value set up. This should be done
internal to the software. If there are multiple models included in one
software package, the program should automatically adjust the roller diameter
value. There is no need for the user to change.
Digital Drive Wiring Diagram
RST 5.6 Upper Board
RCT 7.6 Upper Board
Power Source Wiring Diagram
A – Socket wire to breaker or on/off switch.
Wire length will determine connection point.
B – Ground
C – Socket wire to breaker or on/off switch.
Wire length will determine connection point.
D – On/Off switch to motor control board.
E – On/Off switch to motor control board.
F – On/Off switch to breaker.
Note: (Wires A & C are interchangeable.)
No Motor Movement Voltage Checkpoints
Upper Board Checkpoints
Procedures:
Using a dc volt meter (if non-auto ranging set for the 20vdc range), test the
voltage at the grey and again at the white console cable connections using the
yellow, orange or red wires as ground. Two tests are to be performed; test
once with power on before the treadmill is started and again after Start is
pressed.
Desired Results:
The voltage charts contain typical desired results on a fully functional
system. A variance from the norm would indicate a defective component.
Lower Board Checkpoints
Console Cable Connection
Procedures:
Using a dc volt meter (if non-auto ranging set for the 20vdc range), test the voltage at the grey and again at the white console cable connections using the yellow, orange or red wires as ground. Two tests are to be performed; test once with power on before the treadmill is started and again after Start is pressed. Note: this is the same procedure as the upper board console cable connection. If results vary from the upper board, the console cable is the likely cause and a continuity check should be performed.
Desired Results:
The voltage charts contain typical desired results on a fully functional
system. A variance from the norm would indicate a defective component.
No Motor Movement Voltage Checkpoints
Digital Speed Sensor Connection
Procedures:
Using a dc volt meter (if non-auto ranging set for the 20vdc range); test the
voltage at the red wire and again at the yellow wire using the blue, black or
black as ground. The yellow wire should be measure twice, once with the optic
speed sensor obstructed and once not obstructed. This can be done by slowly
turning the motor and aligning the tines or open spaces of the optic disk with
the sensor.
Desired Results:
The voltage charts contain typical desired results on a fully functional
system. A variance from the norm would indicate a defective component.
Drive Motor Connection
Procedures:
Using a dc volt meter (if non-auto ranging set for the 200vdc range), test the
voltage at the red and black motor leads with the motor still attached.
Note 1: This should be tested after the console cable and speed sensor points
as they can give the same results as a defective lower board.
Note 2: A non-functional system may still have a voltage present with no motor
attached. For accurate results, the motor must be attached when the voltage is
checked.
Desired Results:
The voltage charts contain typical desired results on a fully functional
system. A variance from the norm would indicate a defective component.
Drive Motor Checkpoints
Procedures:
Unplug the motor from the lower board. Using a dc volt meter (if non-auto
ranging set for the 20vdc range), attach volt meter leads directly into the
motor leads and turn the running belt.
Desired Results:
The motor should generate 5-15 vdc depending on the speed it is turned.
Procedures:
Unplug the motor from the lower board. Using an ohm meter (if non-auto ranging
set for the 200 ohm range), attach ohm meter leads directly into the motor
leads.
Desired Results:
The motor should read approximately 1.0-1.5 ohms.
Console Cable Voltage Chart (DC Volts)
Cut Console Cable Voltage Chart (DC Volts)
Incline Wire Function
Small Connector
- The voltage changes as the incline changes
Large Quick Connects
Parameter: Use functioning incline motor and remove one wire at a time to observe malfunction
Resetting The Incline Motor After Replacing The Motor Control Board
Tools Required:
- Philips Screwdriver
- 17mm Socket
- 17mm Combination Wrench
Procedure:
-
Turn off power to the treadmill and unplug power cord from wall outlet.
-
Replace the Motor Control Board.
-
Fold treadmill into locked position.
-
Undo bolt that attaches the elevation tube to the bottom of the machine (Figure 1)
-
Power up the machine and let the incline spin freely in the tube until it reaches its “zero” position, and then turn power off.
-
Spin shaft manually until it is almost flush with the incline motor casing and only about 1 thread is visible (Figure 2).
-
Reinsert bolt and power up the machine.
-
Test the incline function and calibrate the unit.
Lubrication Procedure
EVERY 6 MONTHS OR 150 MILES
It is necessary to lubricate your treadmill running deck every six months or
150 miles to maintain optimal performance of your treadmill. Once the
treadmill reaches 150 miles, the console will prompt you to lubricate the
treadmill. Only use lubricant designated for treadmills; available by calling
Sears at 1-800-4- MY-HOME®.
- TURN OFF THE TREADMILL with the on/off switch, then unplug the power cord at the wall outlet.
- Loosen both the rear roller bolts. (For best results, place two removable marks on both sides of the frame and note roller position). Once the belt is loosened, take the bottle of lubricant and apply it to the entire top surface of the running deck. Tighten both rear roller bolts (matching up the marks for proper position) to original position. After you have applied lubricant, plug in the power cord, insert the safety key, start the treadmill and walk on the belt for two minutes to spread the lubricant.
- Lubricate the air shocks with Teflon based spray.
- Once lubrication is complete, reset the console by pressing and holding ‘STOP’ and Speed ‘+’ buttons for 5 seconds.
NOTE: The Treadmill will not operate when the message is showing. You may hold STOP for 5 seconds to suspend message for 5 miles.
Horizon Fitness | 1620 Landmark Drive, Cottage Grove WI 53527 | Phone 608.842.1650 | Fax 608.839.1280 | e-mail [email protected]