Horizon Fitness 612T User manual

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Horizon Fitness 612T Service Manual

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TABLE OF CONTENTS
CHAPTER 1: SERIAL NUMBER LOCATION……………………………………………….………3
CHAPTER 2: ENGINEERING MODE
2.1 Engineering Mode…………………………………….……………………………………………...……..4
2.2 Engineering Mode Overview…………………………………………….…………………………..…….5
CHAPTER 3: ELECTRAL DIAGRAM
3.1 Electrical Diagram …………………………………………………………………………………….…….6
CHAPTER 4: TROUBLESHOOTING
4.1 Troubleshooting – No Power to the Console ………………………………………………….………....7
4.2 Troubleshooting – No Console Response ……………………………………………...……....….…….9
4.3 Troubleshooting – Incline Motor Issues…………………………..………………………..…………….10
4.4 Troubleshooting – Speed Feedback Inaccurate……………………………………….……………..…11
4.5 Troubleshooting – Noise Issues ……………………………………………………………..…..…….…12
4.6 Troubleshooting – Speaker / Audio Issues……………………………………………………..……..…14

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CHAPTER 1: SERIAL NUMBER LOCATION
1.1 Serial Number Location

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CHAPTER 2: ENGINEERING MODE
2.1 Engineering Mode
1) To enter Engineering Mode, press & hold the SPEED UP and DOWN keys at the same time for 3-5
seconds until Engineering Menu appears on the display.
2) Use the SPEED UP and DOWN keys to scroll through a list of modes.
3) Press START to enter a mode.
4) Use the SPEED UP and DOWN keys to change the parameter.
5) Press the START key to save the change to the parameter.
6) Press and hold the STOP key to exit Engineering Mode and return to normal operation.

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CHAPTER 2: ENGINEERING MODE
2.2 Engineering Mode – Overview
MODE FUNCTION DESCRIPTION
ENG 0 Display Test Start Key – LCD/LED on
Stop Key – LCD/LED off
Any Other Key - Will show on the display window.
Hold the STOP key for 3 seconds to return to the Engineering Menu.
ENG 1 Hardware Test Motor Test. Press START and the belt should start moving, press
SPEED UP or DOWN to change the speed.
ENG 2 Auto Calibration Auto calibrates the speed only. If the auto calibration passes, the unit
will return to normal operation.
ENG 3 Switch Function Use the START key to select unit (1 = KM & 0 = Mile in the Speed
window).
ENG 4 Information Accumulated Time and Distance
Press the START key to toggle between Time and Distance. Press
and hold the START key for 5 seconds to clear all data.
Unit of Time is Hour & Unit of Distance is KM or Mile based on your
setting.
* Demo Mode – The console will display Figure A after the removal of the safety key; Demo Mode will turn on
60 seconds after the removal of the safety key. The LED and LCD will display in turns in Demo Mode (Figure
B).
FIGUREA FIGUREB

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CHAPTER 3: ELECTRICAL DIAGRAM
3.1 Electrical Diagram

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CHAPTER 4: TROUBLESHOOTING
4.1 Troubleshooting – No Power to the Console
Symptom：The power switch is in the on position, but the console will not turn on.
Reason：
1. The outlet is not providing the correct power, or the power cord / switch is defective.
2. The power receptacle or power wiring to the MCB is defective.
3. The MCB is defective.
4. The console cable or console is defective.
Solution：
1. Check to see if there is power to the power switch. If it does not, try a different outlet.
a. If the power switch still does not have power with a known good outlet, replace the power switch.
2. Check to see if the MCB has power. There is a red power LED on the MCB that should be lit.
3. If the MCB does not have power, check the connection of the power wiring from the power
receptacle to the MCB.
a. Use a multi-meter to measure voltage at AC1 & AC2, AC voltage should be the same as local
standard voltage (110V-240V).
b. If the AC voltage value is standard, replace the MCB as it is defective.

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CHAPTER 4: TROUBLESHOOTING
4.1 Troubleshooting – No Power to the Console – Continued
4. If the MCB does have power, check the connection of the console cable wire at the MCB and UCB.
a. Remove the console cable from the MCB, and use a multi-meter to measure the DC voltage
between the “GND pin” (Pins 4 & 5) and the “+ 15V Pin” (Pins 7 & 8). DC output is normally around
15VDC. If there is no output, replace the MCB.
b. If output is around 15VDC, check the console cable for pinches or kinks. If any damage is found,
replace the console cable. Disconnect the console cable at the UCB and measure the DC voltage
between the “GND pin” (Pins 4 & 5) and the “+ 15V Pin” (Pins 7 & 8). DC output is normally around
15VDC. If there is no output, replace the console cable.
c. If there output, replace the UCB.

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CHAPTER 4: TROUBLESHOOTING
4.2 Troubleshooting – Keypads Not Responding
Symptom：The keypads are not responding when pressed.
Reason：
1. The keypads are defective.
2. The console is defective.
Solution：
1. Press the SPEED UP and DOWN keys together for 3 seconds to enter Engineering Mode.
a. Use the SPEED UP or DOWN key to scroll to ENG0, and press START.
b. Test each of the keypads using Display Test. The console should chime as each key is
pressed.
2. If any keypads are not chiming during Step 1, check the connection of the keypad ribbon cable at the
UCB.
a. Even if the connection appears good, detach the ribbon cable from the UCB, and then
re-attach and retest.
b. Replace the keypads as needed.
3. If the keypads do not resolve the issue, replace the UCB.

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CHAPTER 4: TROUBLESHOOTING
4.3 Troubleshooting – No Console Response
Symptom：The power is on and the console lights up, but the treadmill does not run when keys are
pressed.
Reason：
1. The keypads are defective.
2. The console is defective.
3. The drive motor is defective.
4. The speed sensor is defective.
5. The MCB is defective.
Solution：
1. Check if the console beeps when all keys are pressed. If not, troubleshoot the keypads as outlined in
Section 4.2.
2. Enter Engineering Mode (See Section 2.1), and scroll to ENG 1 (Hardware Test). Press the START
key.
a. Press the SPEED UP and DOWN keys, if the data in windows TIME and DISTANCE changes, the
console is ok. If the data does not change, replace the UCB.
3. Turn off the power switch, and open the upper motor cover. Remove the red & black wires coming
from the motor to the MCB, and use a multi-meter to measure the resistance of the drive motor wire.
a. If the resistance is higher than 10 Ω, the drive motor is defective. Replace the drive motor.
b. If the resistance is lower than 10 Ω, the drive motor is ok.
4. Check the connection of the speed sensor (encoder disk group) at the MCB (Figure A).
a. Remove the speed sensor from the motor and clean it (Figure B), then re-test.
b. If the speed sensor is clean and has a good connection but still will not operate, replace the speed
sensor.
5. Replace the MCB as the last step if the unit still does not run after taking the above actions.
FIGUREA FIGUREB