CYBEX 770T Service Manual
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CYBEX 770T Service Manual

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Summary of Contents for CYBEX 770T

  • Page 1 Cybex 770T/790T Treadmill Service Manual www.cybexintl.com...

  • Page 2: Table Of Contents

    © Copyright , Life Fitness, LLC. All Rights Reserved. Life Fitness, Hammer Strength, Cybex, ICG and SCIFIT are registered trademarks of Life Fitness, LLC and its affiliated companies and subsidiaries. Brunswick and related trademarks used under license from Brunswick Corporation.
  • Page 3 Cybex 770T/790T Treadmill Part Number FCC Compliance Information Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules.

  • Page 4: Safety

    • Connect unit to a grounded outlet. • Do not use voltage adapter or extension cord. Cybex is not responsible for injuries or damages as a result of cord or plug modification. • Verify voltage requirements of unit match local voltage requirements.

  • Page 5: Voltage Information

    Cybex 770T/790T Treadmill Part Number UK 230 VAC BS 1363 Danish 107-2-D1 Australia AS/NZS 3112 GB 2099-1 and GB Chinese 1002-1 Voltage Information Before plugging the power cord into an electrical outlet, verify that the voltage requirements for the site match the voltage of the treadmill that has been received.
  • Page 6 Cybex 770T/790T Treadmill Part Number • Maximum user weight is 400 lbs. (180 kg). • Inspect unit. If damaged, notify floor staff. DO NOT USE. • Place your feet on the two top steps when starting or stopping the treadmill.

  • Page 7: Warning Decals

    • Disconnect power before servicing. • DO NOT attempt repairs, electrical or mechanical. Seek qualified repair personnel when servicing. If you live in the USA, contact Cybex Customer Service at 888-462-9239. If you live outside the USA, contact Cybex Customer Service at 508-533-4300.
  • Page 8 Cybex 770T/790T Treadmill Part Number Page 8 of 261...

  • Page 9: Label Placement

    Cybex 770T/790T Treadmill Part Number Label Placement DE-22764-X Decal, Warning upper, console DE-23296 Decal, Warning lower, console DE-23080-4 Decal, Warning, Upper Display, Canada DE-22910 Decal, Motor Cover, 115 VAC DE-23079 Decal, Motor Cover, 230 VAC DE-23212-4 Label, Warning, Do not tilt...

  • Page 10: Emergency Stop Key (E-Stop)

    Cybex 770T/790T Treadmill Part Number Emergency Stop Key (e-stop) The e-stop key functions as an emergency stop. In an emergency situation, the e-stop key disengages from the console and the treadmill will come to a stop. Before using the treadmill, clip the e-stop key as described below.
  • Page 11 Cybex 770T/790T Treadmill Part Number 5. After use, remove the e-stop key from the treadmill. The e-stop key can be removed to help prevent unauthorized use. Refer to the Stopping the Treadmill section in the Operation chapter for more information about the e-stop key.

  • Page 12: Maintenance

    Cybex equipment. Cybex is not responsible for performing regular inspection and maintenance actions for your machines. Instruct all personnel in equipment inspection and maintenance actions and also in accident reporting and recording.

  • Page 13: Vacuum Motor Bay

    CardioTouch Screen While in Dormant Mode press the Cybex logo icon to access the Lock and Toolbox options. Press the Lock screen for cleaning icon to lock the screen for 10 seconds. The CardioTouch screen will stay locked for 10 seconds to prevent any key presses from being processed.
  • Page 14 Cybex 770T/790T Treadmill Part Number 1. Loosen, but do not remove the two front cover screws securing the motor cover using a Phillips screwdriver. Item Description Qty. Motor cover Front cover Screws 2. Remove motor cover by lifting vertically. 3. Loosen but do not remove the seven screws securing the sheild to the base using a Phillips screwdriver.

  • Page 15: Running Belt

    The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 16 Cybex 770T/790T Treadmill Part Number 7. Check the belt tension after the running belt has been centered. Make sure the running belt tension is tight enough so that the running belt does not slip or hesitate when stepped on. Walk on the treadmill at 3.5 - 4 mph (5.6 - 6.4 kph) and every 4th to 5th step throw your weight into your step to feel if the running belt is slipping.

  • Page 17: Other Maintenance

    Cybex 770T/790T Treadmill Part Number Check the running belt condition 1. Remove the two screws securing the right end cap using a Phillips screwdriver. Item Description Qty. Screws Right end cap 2. Repeat step 1 for the left end cap.

  • Page 18: E3 View Or Cybex Go Monitor

    Cybex 770T/790T Treadmill Part Number E3 View or Cybex GO Monitor Cleaning • Clean with a dust free cloth. For further cleaning, use a soft cloth or paper towel dampened with water. To avoid damage to the surface of the monitor, do not use abrasive or chemical cleaning agents.

  • Page 19: Service Schedule

    Cybex 770T/790T Treadmill Part Number 2. Grasp the service wheel lever and slide to the right and down to lock in place. Item Description Qty. Service wheel lever Frame The service wheel will lower and raise the rear feet off the floor.
  • Page 20 Cybex 770T/790T Treadmill Part Number This is the minimum recommended service. Determine distance Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.
  • Page 21 Cybex 770T/790T Treadmill Part Number Every 30,000 miles (48,280 km). Replace running belt and deck. Page 21 of 261...

  • Page 22: Customer Service

    To speak with a customer service representative, call 800-351-3737 (for customers living within the USA) or 847-288-3700 (for customers outside the USA). The following information located on the serial number decal will assist our Cybex representatives in serving you. • Unit Serial Number, Product Name and Model Number •...

  • Page 23: Return Material Authorization (Rma)

    Contact your authorized Cybex dealer on all warranty-related matters. Your local Cybex dealer will request a RMA from Cybex, if applicable. Under no circumstances will defective parts or equipment be accepted by Cybex without proper RMA and an Automated Return Service (ARS) label.

  • Page 24: Service

    Cybex 770T/790T Treadmill Part Number Service Console Layout Console Display LED Display Bar Graph Heart Rate Indicator Data Readouts Enunciator Page 24 of 261...
  • Page 25 Cybex 770T/790T Treadmill Part Number E3 View Monitor User Control Symbols Used Control Control Name Description INCLINE UP Adjust Incline up. INCLINE DOWN Adjust Incline down. SPEED UP Adjust Speed up. SPEED DOWN Adjust Speed down. VOLUME UP Adjust Volume up.
  • Page 26 Cybex 770T/790T Treadmill Part Number Control Control Name Description VOLUME DOWN Adjust Volume down. CHANNEL UP A/V - Channel UP CHANNEL DOWN A/V - Channel DOWN Press STOP once to end the workout session STOP and start the Workout Review. Press STOP again to exit to Dormant Mode.
  • Page 27 Cybex 770T/790T Treadmill Part Number Icon Icon Name Description If pause feature is enabled, pause icon is shown. Press PAUSE Pause icon once to enter pause mode. If pause feature is disabled, stop icon is shown. Press STOP Stop icon or STOP button once to enter Workout review.
  • Page 28 SCAN icon to display different data sets. Tap again to change the data set, or multiple times to get back to SCAN. Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to access LANGUAGE ICON Screen Lock and Toolbox.
  • Page 29 Cybex 770T/790T Treadmill Part Number CardioTouch Screen — Tap the icons to make selections. Changing Speed Press the Speed+ - keys to change the speed in increments of 0.1 mph or 0.1 kph. Minimum to maximum speed is from 0.5 - 12.4 mph (0.8 - 20 kph).
  • Page 30 Sign up as a new user or login with existing account. History Review workout history if logged in. Cybex GO Console Log In or Sign Up XID is a universal network that allows you to log into connected fitness equipment. An XID account allows you to:...
  • Page 31 Cybex 770T/790T Treadmill Part Number • Create playlists for your favorite audio and video tracks • Track your workouts • Join in group challenges At the opening screen there are three options available. Sign-in with XID Enter an existing XID account number.

  • Page 32: Emergency Stop Key (E-Stop)

    Cybex 770T/790T Treadmill Part Number Emergency Stop Key (e-stop) The e-stop key functions as an emergency stop. In an emergency situation, the e-stop key disengages from the console and the treadmill will come to a stop. Before using the treadmill, clip the e-stop key as described below.

  • Page 33: Setup

    • Stand on two top steps. • Do not stand on belt. Cybex recommends that the treadmill be unplugged or the on/off (I/O) power switch turned off (O) when it is not in use. 1. Without anyone on the treadmill, plug the power cord into a power outlet from a grounded, dedicated circuit.
  • Page 34 . The screen will refresh. Setup options - LED, E3 View Monitor Enter setup options. Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.

  • Page 35: Audio Visual Configuration

    Cybex 770T/790T Treadmill Part Number Select date style [MM] [DD] [YYYY], [DD] [MM] [YYYY], or [YYYY] [MM] [DD]. Date Y - Year, M - Month and D - Day. Enter date using keypad, press Enter to save. Select distance units. Miles or Km (Kilometers). Select weight units. Lbs.
  • Page 36 3. Toggle the power switch on (|). Power switch is located under the front end of the treadmill. The control panel will light up and be in the Dormant Mode. Press and hold Cybex logo for 6 seconds to ac- CYBEX LOGO cess Screen Lock and Toolbox.
  • Page 37 Tools Required: Headphones (not included) Setting up the Cybex Wireless Audio Receiver Module requires three steps: 1. Determine the type of transmitter used (MYE 900MHz, Broadcast Vision 863MHz, etc. Page 37 of 261...
  • Page 38 Cybex 770T/790T Treadmill Part Number 2. Set A/V Device to Wireless TV. 3. Assign a TV channel number to each transmitter on the console. Determine transmitter type UHF transmitters have TV's identified by number. Example TV1. UHF Transmitters Determine which transmitter is used in your facility.
  • Page 39 Cybex 770T/790T Treadmill Part Number 4. Tap Select Xmtr to select your transmitter type from the available choices. The display will only show choices available under your transmitter type (900 MHz, 863 MHz or 806 MHz). 900 MHz System 863 MHz System 806 MHz System "M 900"...
  • Page 40 Cybex 770T/790T Treadmill Part Number Adjust sound volumes After completing the channel setup, it may be necessary to adjust the volume level of each TV so they all have similar volume levels. 1. Plug headphones into headphone jack. 2. Press the TV icon.
  • Page 41 Cybex 770T/790T Treadmill Part Number 2. Unscrew the coax cable from the Broadcast Vision television. Item Description Qty. Coax cable, from cable provider Coax cable filter Coax cable, 6” Broadcast Vision television 3. Install the coax cable filter to the coax cable from cable provider.
  • Page 42 Cybex 770T/790T Treadmill Part Number C.A.B. (Console Adapter Box) or Connected TV setup option 1. Access setup screen. Press and hold Cybex logo for 6 seconds to ac- CYBEX LOGO cess Screen Lock and Toolbox. Press and hold language logo for 6 seconds to LANGUAGE ICON access Screen Lock and Toolbox.
  • Page 43 Cybex 770T/790T Treadmill Part Number Determine TV’s signal source For traditional RF Cable Signal over Coax, or a distributed/modulated club setup over Coax, connect the coax at the base of the unit. Skip to E3 View Monitor Setup. For installations using a Set Top Box (Cable Box, Satellite Box or IPTV Box) for each unit, determine the output from the Set Top Box.
  • Page 44 Cybex 770T/790T Treadmill Part Number Ethernet HDMI Coax NEAR: If using BV CAB or Con- nected TV, the infrared transmitter The output of the STB can be run plugs in to this connection at the If the STB is NEAR, one option is...
  • Page 45 Cybex 770T/790T Treadmill Part Number Install STB components based on configuration Configuration options are: • MYE CableSAT • BV CAB or Connected TV STB • BV CAB for Broadcast Vision or Connected TV, TV-on-a-stand NOTE: Configure and setup one product, to test the system, before completing others.
  • Page 46 Cybex 770T/790T Treadmill Part Number MYE Coax with STB FAR from equipment (up to 1000’ range if unobstructed) BV CAB or Connected TV STB This system uses a transmitter mounted inside the console and a 14” lead that plugs in the Gray MYE port of the MCC.
  • Page 47 STB (Set Top Box) Setup Option 1. Access setup screen. Press and hold Cybex logo for 6 seconds to ac- CYBEX LOGO cess Screen Lock and Toolbox. Press and hold language logo for 6 seconds to LANGUAGE ICON access Screen Lock and Toolbox.
  • Page 48 Cybex 770T/790T Treadmill Part Number Enter the sequence: 4. Tap Setup at the main Toolbox screen. Tap the Shift Right icon to navigate to the TV Source icon. 6. Tap TV Source. 7. Select Tuner, STB + Tuner, or STB + HDMI from the A/V options. If STB + HDMI was selected, skip tuning steps.
  • Page 49 All LED's should blink once as confirmation. E3 View Monitor Setup Access Setup Screen Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.
  • Page 50 Cybex 770T/790T Treadmill Part Number E3 View Monitor Controls The CardioTouch screen is used to perform all setup operations for the E3 View Monitor. CardioTouch screen functions Wrench Icon Return to Toolbox home Go to Setup home screen Next Moves forward in Setup menu to next screen...
  • Page 51 Cybex 770T/790T Treadmill Part Number Navigate right Increase value Picture 1. Tap to select Picture. 2. Tap to access access Picture menu. Brightness Adjust range from 1 to 100. Default is 65. Contrast Adjust range from 1 to 100. Default is 70.
  • Page 52 Cybex 770T/790T Treadmill Part Number 2. Tap to access Channels menu. ATSC Monitor DVB-T Monitor Feature Settings Signal (ATSC only) Select Air, Cable STD, Cable IRC, or Cable HRC. Auto Program See Below Manual Program (DVB-T only) See Below Add/Delete Channels...
  • Page 53 Cybex 770T/790T Treadmill Part Number 3. Tap to select Mode. ATSC Monitor Mode Channel Sequence Additional Digital Signal Channel Map 4. Tap to set the scope of channel scanning. Option Description Analog Only (De- TV searches for analog channels only...
  • Page 54 Cybex 770T/790T Treadmill Part Number 11. Tap (Yes) to start auto programming. Tap (No) button to cancel the operation. The TV will now search all available channels with an on-screen progress percentage displayed. Any tuning Mode that includes Digital channels will require several minutes to complete auto programming.
  • Page 55 Cybex 770T/790T Treadmill Part Number 5. Tap to set the scope of channel scanning. Option Description Analog Only (De- TV searches for analog channels only fault) Digital Only TV searches for digital channels only Analog and Digi- TV searches for both analog and digital channels 6.
  • Page 56 Cybex 770T/790T Treadmill Part Number 4. Tap to select ATV or DTV. Adjust settings for Storage, System, Band, Channel, Name, or Search. Select ATV Mode Save to save settings. DTV Mode Select UHF channel. Select Save to save settings. Add/Delete Channels (ATSC and DVB-T) 1.
  • Page 57 Cybex 770T/790T Treadmill Part Number Tap the Setup icon to return to the previous menu. To exit, Tap the Setup icon until the programming menus disappear. If there are more analog channels to be added or deleted, repeat steps 3 through 5.

  • Page 58: Cybex Go Setup

    • Wired (Ethernet) – Ethernet cable is connected to the Cybex equipment through a network switch to the Gateway • Wireless – Gateway has been installed in the facility using a unique wireless access point. Cybex GO Monitor will not connect to any other routers in the area.
  • Page 59 3. The control panel will light up. Cybex GO installer The Cybex GO installer only occurs during the initial installation of the unit. Once complete, refer to Initial setup. 1. Tap NEXT to begin configuration.
  • Page 60 Cybex 770T/790T Treadmill Part Number 2. Select one of the three network devices. • Wired network interface. • Wireless network interface. • TV only. No network connection. Description Wired network interface Wireless network interface TV only. No network connection NEXT Follow the procedure for the network device selected.
  • Page 61 Cybex 770T/790T Treadmill Part Number 4. Tap NEXT after test passes and displays Connected!. Description Connected! NEXT 5. Tap OK after alert window displays Wireless network configured!. 6. Go to Test network. TV only 1. Tap TV only. No network connection.
  • Page 62 This will scan for all available channels. The scan can take 20 minutes to complete. If scan was previously configured and stored, choose Download Configuration and tap NEXT to configure other units. Go to Test Cybex GO Monitor. Description Analog/Digital Cable...
  • Page 63 To configure each of the channels see Channel configuration. 3. Tap FINISH to complete installation. Cybex GO monitor will reset. Do not call Netpulse. Channel configuration Each channels name, position, and icon can be edited. Channels not needed or channels with poor signals can be disabled.

  • Page 64: Equipment Setup

    Test Cybex GO monitor Test Cybex GO monitor by tapping CONTINUE AS GUEST at home screen. Select from TV or Videos to test Cybex GO monitor Equipment Setup Initial setup Initial setup only occurs during the installation of the unit.
  • Page 65 . The screen will refresh. Setup options - Cybex GO Monitor Enter setup options. Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.

  • Page 66: Diagnostics

    . The screen will refresh. Diagnostics Diagnostic menus display service information. Access Diagnostic menus Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.
  • Page 67 Restores all setup variables back to factory defaults. Does not affect Time or faults Date. Setup options - Cybex GO Monitor Enter setup options. Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox. Press and hold language logo for 6 seconds to ac- LANGUAGE ICON cess Screen Lock and Toolbox.
  • Page 68 Cybex 770T/790T Treadmill Part Number Setup menu Select distance units. Miles or Km (Kilometers). Select weight units. Lbs. Units (Pounds), Kg. (Kilograms) or Stone (Stones). Perform Touch Calibration, Network Setup, or Channel Setup. See A/V A/V Config Configuration. Set Default and Max workout times. Default choices are 20, 30, or 60 minutes.
  • Page 69 Cybex 770T/790T Treadmill Part Number 2. Tap the Treadmill Totals icon to display the Total Unit Stats menu. Total Units Stats menu: Distance – Recorded total distance in the configured units. Hours – Number of total time the motor has been run, stored in hours.
  • Page 70 Cybex 770T/790T Treadmill Part Number • GFX On Time • Days in Service • Backlight On Time • iPod Attaches • iPod On Time • Touch Panel Usage (total) Install Icon – This icon is active to allow resetting the install date for the GUI Module.
  • Page 71 Cybex 770T/790T Treadmill Part Number Tap the Toolbox icon to return to the Toolbox screen. OEM Diags (Diagnostics) 1. Tap the OEM Diags icon to display the OEM Diagnostics menu. OEM Diagnostics menu: Build Report Displays software versions and component information.

  • Page 72: Cybex Go Monitor Diagnostics

    Cybex 770T/790T Treadmill Part Number Cybex GO Monitor Diagnostics Cybex GO monitor diagnostics allows access to system information, screen calibration, and other diagnostic functions. Access to the diagnostic functions are available through the CardioTouch screen or hidden menu. CardioTouch screen access Enter setup options.
  • Page 73 Cybex 770T/790T Treadmill Part Number Hidden menu access 1. At the main dormant screen perform the following sequence. a) Tap the upper left portion of the screen once. b) Tap the upper right portion of the screen twice. c) Tap the upper left portion of the screen once.

  • Page 74: Error Codes 770T, 790T Treadmill

    Brings up the TV Channel scanning configuration screen. This 7226 SCAN option is used if the Cybex GO monitor has lost its TV configura- tion. Brings up the touch screen calibration screen. This is used recal- 86824...
  • Page 75 All errors generated by or reported by the motor controller are 90 or greater. Access error log Press and hold Cybex logo for 6 seconds to access CYBEX LOGO Screen Lock and Toolbox.
  • Page 76 Cybex 770T/790T Treadmill Part Number Error Code Description Error 19 Drive Enable Line is open Error 92 Over Current (Output) Error 93 Over Voltage (DC Link) Error 94 Over Heat (Heatsink) Error 95 Low Voltage (DC Link) Thermal Integrator of output current...
  • Page 77 Cybex 770T/790T Treadmill Part Number Error 1: Drive did not start (No Speed at Startup) Cause: Main computer board calls for the drive motor to start, but the drive controller responds with 0 for more than 5 seconds (the drive motor didn’t start).
  • Page 78 Cybex 770T/790T Treadmill Part Number Error 2 - GFX communications issue Cause: MCC is receiving incomplete, erroneous, or no information from the Graphics Board that occurred even after three re-tries. Service: If this occurs in Dormant, the cause is likely a software defect or power fluctuation. If this occurs mostly in active mode, it could be due to static discharge or increased data traffic.
  • Page 79 Cybex 770T/790T Treadmill Part Number Flowchart: Error 2 Page 79 of 261...
  • Page 80 Cybex 770T/790T Treadmill Part Number Error 3: Speed Irregularity / Underspeed Cause: • Loss of Speed: Drive responds with an actual of 0 Hz after initially sending a valid speed. • Speed Acceleration is delayed: Drive is reporting a deviation of more than 6% from Target frequency to Actual frequency for more than 45 seconds when changing speed.
  • Page 81 • NTS and MCC could potentially be out of sync, requiring a full-system power cycle. If this recurs, the NTS firmware may need to be updated. • Call Cybex and have a technician verify the firmware and update it if necessary. • Attempt the Check for Updates button in the Toolbox/Setup/AV Display/Network Setup.
  • Page 82 Cybex 770T/790T Treadmill Part Number Flowchart: Error 4 Page 82 of 261...
  • Page 83 Cybex 770T/790T Treadmill Part Number Error 5: Drive Communication Issue Cause: Loss of communication with the drive, the drive has not given a valid response in 350- 400ms. Service: Power outages are most suspect. • Check the power cord, the power source (plug, outlet, cleanliness of power, brown-outs, etc.) and internal communication cabling.
  • Page 84 Cybex 770T/790T Treadmill Part Number Error 6 - Membrane Fault (Stuck Key) Cause: Membrane is showing a key constantly activated (noticed at power-up.) Service: • Check the membrane and thumb controls for signs of fatigue, cracking, or possible moisture intrusion.
  • Page 85 Cybex 770T/790T Treadmill Part Number Flowchart: Error 6 Page 85 of 261...
  • Page 86 Cybex 770T/790T Treadmill Part Number Error 7: Controller Fold-back Cause: The motor is bogging down, which causes high current. Once a threshold current is met, the drive begins to fold-back the actual frequency in response to the motor slip in order to prevent a complete motor stall.
  • Page 87 Cybex 770T/790T Treadmill Part Number Error 8: Approaching Over-Temperature Cause: Drive is reporting a temperature of 100+°C Service: • Open controller and vacuum or blow out accumulated debris. • Verify the drive’s fan is functional, unclogged, and the heat sink vanes are clear of debris.
  • Page 88 Cybex 770T/790T Treadmill Part Number Error 9: MCC Watchdog triggered Cause: A software task has failed, causing a delay in the routine running of the code. If the delay is long enough, a hardware timer in the processor will re-boot the processor. When the processor comes up, it will communicate what caused the reset (watchdog vs.
  • Page 89 Cybex 770T/790T Treadmill Part Number Flowchart: Error 9 Page 89 of 261...
  • Page 90 Cybex 770T/790T Treadmill Part Number Error 10: Motion Sensor Blocked Cause: The motion sensor is reading between 1500 and 3500 for 10 minutes or greater while in Opening Screen. Display initiates Dormant from Opening Screen. In Dormant, the GUI shows a pop-up message indicating the user must touch the screen to begin, and that the motion sensor is blocked.
  • Page 91 Cybex 770T/790T Treadmill Part Number Error 11: Motion Sensor Defective Cause: The motion sensor is reading a consistent value indicative of being unplugged (650-750), or the ground removed (2100-2900), or power is removed (550-600), or > 3500 (defective) for 10 minutes or greater while in Opening Screen.
  • Page 92 Cybex 770T/790T Treadmill Part Number Error 12: Graphics Board Watchdog triggered Cause: A software task has failed, causing a delay in the routine running of the code on the Graphics Board. If the delay is long enough, a hardware timer in the processor will re-boot the processor. When the processor comes up, it will communicate what caused the reset (watchdog vs.
  • Page 93 Cybex 770T/790T Treadmill Part Number Flowchart: Error 12 Page 93 of 261...
  • Page 94 Cybex 770T/790T Treadmill Part Number Error 13: Upper Display watchdog triggered Cause: A software task has failed, causing a delay in the routine running of the code on the upper display. If the delay is long enough, a hardware timer in the processor will re-boot the processor. When the processor comes up, it will communicate what caused the reset (watchdog vs.
  • Page 95 Cybex 770T/790T Treadmill Part Number Flowchart: Error 13 Page 95 of 261...
  • Page 96 • Ensure all grounds are in place and connected to un-painted and un-corroded surfaces. • Check drive and display communications with the Cybex test protocol software on a laptop. • Reprogram or replace the drive and replace the console cable.
  • Page 97 Cybex 770T/790T Treadmill Part Number Flowchart: Error 14 Page 97 of 261...
  • Page 98 Cybex 770T/790T Treadmill Part Number Error 15: Embedded A/V Device Failure Cause: A software task has failed, causing a delay in the routine running of the code on the Graphics Board. If the delay is long enough, a hardware timer in the processor will re-boot the processor. When the processor comes up, it will communicate what caused the reset (watchdog vs.
  • Page 99 Cybex 770T/790T Treadmill Part Number Flowchart: Error 15 Page 99 of 261...
  • Page 100 Cybex 770T/790T Treadmill Part Number Error 16: Membrane Fault (No Membrane) Cause: Membrane is showing a general fault of communications such as registers can’t be set, corrupt responses, or no responses (such as the membrane being unplugged.) Service: • Ensure the membrane is plugged in.
  • Page 101 Cybex 770T/790T Treadmill Part Number Flowchart: Error 16 Page 101 of 261...
  • Page 102 Cybex 770T/790T Treadmill Part Number Error 18: Membrane Fault – Stuck Thumb Control Cause: Membrane is showing a thumb control key constantly activated for >45 seconds, regardless of mode. Service: If this was a momentary glitch or user error, cycling power will remedy the situation. If a key is permanently stuck, the error will reoccur and the membrane will have to be replaced.
  • Page 103 Cybex 770T/790T Treadmill Part Number Error 19: Drive Enable Line is open Cause: The Drive is reporting the enable line (used for E-Stop) is open by clearing bit 4 of the status byte, when the MCC is not sensing the key is out.
  • Page 104 Cybex 770T/790T Treadmill Part Number Error 92: Over Current (Output) Cause: The drive has several overcurrent situations that can cause this: • >25A Instantly • >200% Rated for 3 seconds (roughly 16A) • >150% Rated for 1 minute (roughly 12A) •...
  • Page 105 Cybex 770T/790T Treadmill Part Number Error 93: Over Voltage (DC Link) Cause: Drive’s internal boost circuit is reporting >400V DC on the bus. Service: • Verify line voltage isn’t spiking. • Check the treadmill’s internal AC wiring. • Verify correct voltage controller is used with regard to power at the outlet.
  • Page 106 Cybex 770T/790T Treadmill Part Number Error 94: Over Heat (Heatsink) Cause: Drive is reporting an internal temperature of 105°C Service: • Verify the drive’s fan is functional, unclogged, and the heat sink vanes are clear of debris. • Verify controller is secured to the mounting plate tightly.
  • Page 107 Cybex 770T/790T Treadmill Part Number Error 95: Low Voltage (DC Link) Cause: Input voltage drops to unacceptable limits: • <200V for the 230V unit • <85V for the 115V unit Service: Error 95 is caused by a power outage while the belt is moving, either on purpose (running the treadmill to incline it, then shutting it off with the power switch) or by an outside influence (plug was kicked, loose fitting outlet, power outage, circuit breaker tripped, or simply shutting of the power at the breaker).
  • Page 108 Cybex 770T/790T Treadmill Part Number Error 96: Thermal Integrator of output current Cause: The drive has several over-current situations that can cause this: • >200% Rated for 3 seconds (roughly 16A) • >150% Rated for 1 minute (roughly 12A) • >101% Rated for accumulated time (roughly =>8.1A) Service: •...
  • Page 109 • Check the console cable, hub board, and hub board cable for tears or shorts, and verify all connections are clicked-in and solid. • Check for terminal corrosion. • Check drive and display communications with the Cybex test protocol software on a laptop. • Reprogram the console or replace the display board. Page 109 of 261...
  • Page 110 • Check the console cable, hub board, and hub board cable for tears or shorts, and verify all connections are clicked-in and solid. • Check for terminal corrosion. • Check drive and display communications with the Cybex test protocol software on a laptop. • Reprogram the console or replace the display board. Page 110 of 261...
  • Page 111 Cybex 770T/790T Treadmill Part Number Error 103: Input Current OC trip (Drives with PFC only) Cause: Drive is measuring a surge in input current. • 110 VAC: Drive is measuring >80A peak on the input line. • 220 VAC: Drive is measuring >40A peak on the input line.
  • Page 112 Cybex 770T/790T Treadmill Part Number Error 105: Thermal Integrator of Input Current (Drives with PFC only) Cause: The drive is measuring the heating effect of high input current. • 110 VAC: >=23A starts the timer, 43A / 18 seconds based on I ²C •...
  • Page 113 Cybex 770T/790T Treadmill Part Number Error 140: Can not find home position on power-up Cause: The Drive Controller did not encounter the incline zero switch within timed limits on power-up. The treadmill will function normally, with the incline disabled. The display will shut down power to the incline motor, and show dashes for incline until the drive has made a satisfactory calibration.
  • Page 114 Cybex 770T/790T Treadmill Part Number Error 141: Can not find home position in normal use Cause: Drive expected to find the switch transition within timed limits, or encountered it unexpectedly. The display will shut down power to the elevation motor, and show dashes for incline until the drive has made a satisfactory calibration.
  • Page 115 Cybex 770T/790T Treadmill Part Number Error 142: Out of incline range (over 15% or lower than -3%) Cause: The Drive Controller encountered the zero switch when outside of expected limits. The display will shut down power to the elevation motor, and show dashes for incline until the drive has made a satisfactory calibration.

  • Page 116: Software Update 770T

    2. Delete any files on USB stick. Verify USB stick is blank. 3. Go to the LF World service product pages for the latest software files or contact Cybex Customer Service at 508-533-4300 to receive via email. Page 116 of 261...
  • Page 117 Cybex 770T/790T Treadmill Part Number 4. Unzip file to a folder on PC. Zip file contains the following files: • Folder labeled “boot” • Empty text file with model name of product • Other single files Example of folder contents 5.
  • Page 118 Cybex 770T/790T Treadmill Part Number 2. Remove the two screws securing the headphone jack cover to the handset using a Phillips screwdriver. Item Description Qty. Internal USB Port Handset Screws Headphone Jack Cover 3. Insert USB stick into the internal USB port.

  • Page 119: Calibration

    Cybex 770T/790T Treadmill Part Number 2. Toggle the power switch on (I). Console damage may occur.Do NOT turn the power off, press any keys, or remove the USB stick during this procedure. The software will load into the console. This procedure may take up to 4 minutes. During the first two minutes the screen will be blank and not show any progress.
  • Page 120 Cybex 770T/790T Treadmill Part Number 4. Touch the CardioTouch screen to display cross hairs. If the CardioTouch screen is not calibrated, the cross hairs will not line up where the touch is made. Tap the icon to return to the Diagnostics screen.
  • Page 121 Cybex 770T/790T Treadmill Part Number 6. Turn the tube nut with your fingers until it measures the correct center to center length. This length is measured from the center of the top hole to the center of the bottom hole.

  • Page 122: Parts Replacement

    Cybex 770T/790T Treadmill Part Number 6. Turn the tube nut with your fingers until it measures the correct center to center length. This length is measured from the center of the top hole to the center of the bottom hole.
  • Page 123 Cybex 770T/790T Treadmill Part Number Install end caps 1. Install two screws securing right end cap using a Phillips screwdriver. Item Description Qty. Screws Right end cap 2. Repeat step for left end cap. Complete Installation Operate the unit at all levels to verify proper operation.
  • Page 124 Cybex 770T/790T Treadmill Part Number Remove end caps 1. Remove two screws securing right end cap using a Phillips screwdriver. Item Description Qty. Screws Right end cap 2. Repeat step for left end cap. Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards.
  • Page 125 Cybex 770T/790T Treadmill Part Number Install top steps 1. Install right top step by placing in position and inserting a long 3/8” drive socket extension into top step. Item Description Qty. 3/8” Drive Socket Exten- sion Right Top Step 2. Pry the long 3/8” drive socket extension forwards to secure right top step.
  • Page 126 Cybex 770T/790T Treadmill Part Number Rear Roller Tools Required: • Phillips screwdriver • Long 3/8” drive socket extension • 3/4” Socket wrench • 9/16” Socket wrench Disconnect power source 1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located under the front end of the unit, or on the front right side panel.
  • Page 127 Cybex 770T/790T Treadmill Part Number Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards. Item Description Qty. 3/8” Drive Socket Exten- sion Right Top Step 2.
  • Page 128 Cybex 770T/790T Treadmill Part Number 2. Install the bolt, washer, bushing and rear roller nut for each side of the roller into position. Item Description Qty. Rear roller nut Rear roller Bushing Washer Bolt 3. Tighten the two rear roller bolts using a 3/4” Socket wrench.
  • Page 129 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 130 Cybex 770T/790T Treadmill Part Number 6. Tighten the rear roller bolt on the side of the treadmill toward which the running belt is moving using a 3/4" socket wrench. For example: If the running belt moves to the right of the belt tracking slots, tighten the bolt on the right side of the frame, tighten about 1/2 of a turn (clockwise) and wait 30 seconds.
  • Page 131 Cybex 770T/790T Treadmill Part Number 2. Unplug the treadmill from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance. • Electrical charge can remain in unit after unplugging. • Keep water and liquids away from electrical parts.
  • Page 132 Cybex 770T/790T Treadmill Part Number Remove rear roller 1. Remove the two rear roller bolts, washers, bushing and rear roller nut (one roller bolt on each side) using a 3/4” Socket wrench. Loosen each bolt evenly, making sure not to loosen either bolt too many turns before moving to the other bolt.
  • Page 133 Cybex 770T/790T Treadmill Part Number 2. Slide the drive belt around the front roller before attaching the front roller. Item Description Qty. Front roller Drive belt Mounting bolt Tensioning slot 3. Install the two roller bolts that fasten the front roller to the frame. Do not tighten the bolts at this time.
  • Page 134 Cybex 770T/790T Treadmill Part Number 2. Install the bolt, washer, bushing and rear roller nut for each side of the roller into position. Item Description Qty. Rear roller nut Rear roller Bushing Washer Bolt 3. Tighten the two rear roller bolts using a 3/4” Socket wrench.
  • Page 135 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 136 Cybex 770T/790T Treadmill Part Number 6. Tighten the rear roller bolt on the side of the treadmill toward which the running belt is moving using a 3/4" socket wrench. For example: If the running belt moves to the right of the belt tracking slots, tighten the bolt on the right side of the frame, tighten about 1/2 of a turn (clockwise) and wait 30 seconds.
  • Page 137 Cybex 770T/790T Treadmill Part Number Disconnect power source 1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located under the front end of the unit, or on the front right side panel.
  • Page 138 Cybex 770T/790T Treadmill Part Number 3. Repeat steps 1 and 2 for left top step. Remove rear roller 1. Remove the two rear roller bolts, washers, bushing and rear roller nut (one roller bolt on each side) using a 3/4” Socket wrench.
  • Page 139 Cybex 770T/790T Treadmill Part Number Remove running deck 1. Remove the eight screws and eight flat washers that hold the deck in place using a 7/16” Socket wrench. Item Description Qty. 7/16” Bolts Flat washer Running deck Running belt 2. Slide the running deck out of the frame.
  • Page 140 Cybex 770T/790T Treadmill Part Number Install running deck 1. Place the deck in the correct position on the frame. Item Description Qty. 7/16” Bolts Flat washer Running deck Running belt 2. Install and tighten the eight screws and eight flat washers that hold the deck in place using a 7/16”...
  • Page 141 Cybex 770T/790T Treadmill Part Number 3. Install the two roller bolts that fasten the front roller to the frame. Do not tighten the bolts at this time. Ensure that the drive belt is aligned properly in the grooves on the drive motor pulley and front roller pulley.
  • Page 142 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 143 Cybex 770T/790T Treadmill Part Number 5. Observe the Cybex logo position relative to the belt tracking slots with the treadmill running at 5 mph (8 kph). Item Description Qty. Cybex logo Running belt Belt tracking slot While centering the running belt choose one bolt to adjust. Do not adjust both bolts.
  • Page 144 Cybex 770T/790T Treadmill Part Number Deck Pivot and Deck Bumpers Tools Required: • Phillips screwdriver • Long 3/8” drive socket extension • 5/32” Allen wrench • 1/2” Socket wrench • 7/16” Socket wrench • 9/16” Socket wrench • 3/4” Socket wrench Disconnect power source 1.
  • Page 145 Cybex 770T/790T Treadmill Part Number Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards. Item Description Qty. 3/8” Drive Socket Exten- sion Right Top Step 2.
  • Page 146 Cybex 770T/790T Treadmill Part Number Remove front roller 1. Loosen the left mounting bolt using a 9/16” Socket wrench. Item Description Qty. Front roller Drive belt Mounting bolt Tensioning slot 2. Loosen the right mounting bolt using a 9/16” Socket wrench.
  • Page 147 Cybex 770T/790T Treadmill Part Number Remove deck pivot assembly 1. Remove the two bolts, split washers and flat washers securing the front of the deck pivot bracket using a 5/32” Allen wrench. Item Description Qty. Bolt Split Washer Flat Washer...
  • Page 148 Cybex 770T/790T Treadmill Part Number Remove deck bumpers 1. Remove the mounting bolt and washer securing the right deck bumper to the frame using a 1/4" Allen wrench. Item Description Qty. Deck Bumper Mounting Bolt Washer 2. Remove the mounting bolt and washer securing the left deck bumper to the frame using a 1/4" Allen wrench.
  • Page 149 Cybex 770T/790T Treadmill Part Number Install deck bumpers 1. Install the mounting bolt and washer securing the right deck bumper to the frame using a 1/4" Allen wrench. Item Description Qty. Deck Bumper Mounting Bolt Washer 2. Install the mounting bolt and washer securing the left deck bumper to the frame using a 1/4" Allen wrench.
  • Page 150 Cybex 770T/790T Treadmill Part Number 2. Install the two bolts securing the deck pivot shaft to the frame using a 1/2” Socket wrench. Make sure the deck pivot brackets are installed correctly. 3. Install the two bolts, split washers and flat washers securing the front of the deck pivot bracket using a 5/32”...
  • Page 151 Cybex 770T/790T Treadmill Part Number 3. Install the two roller bolts that fasten the front roller to the frame. Do not tighten the bolts at this time. Ensure that the drive belt is aligned properly in the grooves on the drive motor pulley and front roller pulley.
  • Page 152 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 153 Cybex 770T/790T Treadmill Part Number 5. Observe the Cybex logo position relative to the belt tracking slots with the treadmill running at 5 mph (8 kph). Item Description Qty. Cybex logo Running belt Belt tracking slot While centering the running belt choose one bolt to adjust. Do not adjust both bolts.
  • Page 154 Cybex 770T/790T Treadmill Part Number Running Belt Tools Required: • Phillips screwdriver • Long 3/8” drive socket extension • 5/32” Allen wrench • 1/2” Socket wrench • 7/16” Socket wrench • 9/16” Socket wrench • 3/4” Socket wrench Disconnect power source 1.
  • Page 155 Cybex 770T/790T Treadmill Part Number Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards. Item Description Qty. 3/8” Drive Socket Exten- sion Right Top Step 2.
  • Page 156 Cybex 770T/790T Treadmill Part Number Remove front roller 1. Loosen the left mounting bolt using a 9/16” Socket wrench. Item Description Qty. Front roller Drive belt Mounting bolt Tensioning slot 2. Loosen the right mounting bolt using a 9/16” Socket wrench.
  • Page 157 Cybex 770T/790T Treadmill Part Number Remove deck pivot assembly 1. Remove the two bolts, split washers and flat washers securing the front of the deck pivot bracket using a 5/32” Allen wrench. Item Description Qty. Bolt Split Washer Flat Washer...
  • Page 158 Cybex 770T/790T Treadmill Part Number Item Description Qty. Deck Bumper Mounting Bolt Washer Remove running belt Remove the running belt from the unit. NOTE: If the same running belt will be re-installed, note the direction of travel and re-install in the same direction.
  • Page 159 Cybex 770T/790T Treadmill Part Number 2. Install the two bolts securing the deck pivot shaft to the frame using a 1/2” Socket wrench. Make sure the deck pivot brackets are installed correctly. 3. Install the two bolts, split washers and flat washers securing the front of the deck pivot bracket using a 5/32”...
  • Page 160 Cybex 770T/790T Treadmill Part Number 3. Install the two roller bolts that fasten the front roller to the frame. Do not tighten the bolts at this time. Ensure that the drive belt is aligned properly in the grooves on the drive motor pulley and front roller pulley.
  • Page 161 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 162 Cybex 770T/790T Treadmill Part Number 5. Observe the Cybex logo position relative to the belt tracking slots with the treadmill running at 5 mph (8 kph). Item Description Qty. Cybex logo Running belt Belt tracking slot While centering the running belt choose one bolt to adjust. Do not adjust both bolts.
  • Page 163 Cybex 770T/790T Treadmill Part Number Drive Belt Tools Required: • Phillips screwdriver • Long 3/8” drive socket extension • 3/4” Socket wrench • 9/16” Socket wrench Disconnect power source 1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located under the front end of the unit, or on the front right side panel.
  • Page 164 Cybex 770T/790T Treadmill Part Number Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards. Item Description Qty. 3/8” Drive Socket Exten- sion Right Top Step 2.
  • Page 165 Cybex 770T/790T Treadmill Part Number Install front roller 1. Slide the front roller into the running belt. 2. Slide the drive belt around the front roller before attaching the front roller. Item Description Qty. Front roller Drive belt Mounting bolt Tensioning slot 3.
  • Page 166 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 167 Cybex 770T/790T Treadmill Part Number 5. Observe the Cybex logo position relative to the belt tracking slots with the treadmill running at 5 mph (8 kph). Item Description Qty. Cybex logo Running belt Belt tracking slot While centering the running belt choose one bolt to adjust. Do not adjust both bolts.
  • Page 168 Cybex 770T/790T Treadmill Part Number Drive Motor Tools Required: • Phillips screwdriver • Long 3/8” drive socket extension • 1/2” Socket wrench with a 6" extension • 9/16” Socket wrench • 3/4” Socket wrench • Side cutter • Cable tie Incline treadmill 1.
  • Page 169 Cybex 770T/790T Treadmill Part Number Remove end caps 1. Remove two screws securing right end cap using a Phillips screwdriver. Item Description Qty. Screws Right end cap 2. Repeat step for left end cap. Remove top steps 1. Remove the right top step by inserting a long 3/8” drive socket extension into the right top step and prying backwards.
  • Page 170 Cybex 770T/790T Treadmill Part Number Disconnect drive motor cable 1. Locate the drive motor cable exiting the drive motor and connected to the motor controller. Item Description Qty. Front Roller Shield Drive Motor Cable Motor Controller Cable Tie 2. Disconnect the drive motor cable from the motor controller.
  • Page 171 Cybex 770T/790T Treadmill Part Number Heavy parts. • Parts are heavy. • Use safe lifting methods. Lift the drive motor up and out of the treadmill. Item Description Qty. Drive Motor Mounting Brackets Drive Motor 3. Remove the drive motor mounting brackets.
  • Page 172 Cybex 770T/790T Treadmill Part Number 3. Install the four mounting nuts to the drive motor mounting brackets using a 1/2” Socket with a 6” extension. Item Description Qty. Mounting Nut Connect drive motor cable 1. Connect the drive motor cable to the motor controller.
  • Page 173 Cybex 770T/790T Treadmill Part Number Tighten front roller 1. Install the drive belt onto the front roller. Item Description Qty. Front Roller Pulley Drive belt Drive Motor Pulley 2. Ensure that the drive belt is aligned properly in the grooves on the drive motor pulley and front roller pulley.
  • Page 174 Cybex 770T/790T Treadmill Part Number Install end caps 1. Install two screws securing right end cap using a Phillips screwdriver. Item Description Qty. Screws Right end cap 2. Repeat step for left end cap. Install motor cover 1. Place the motor cover into position vertically by aligning the two tabs and four plastic connectors.
  • Page 175 The lateral position of the running belt is correctly centered when the Cybex logo is centered between the inside edges of the two belt tracking slots. If the Cybex logo is not centered between the belt tracking slots, center the running belt with the following procedure.
  • Page 176 Cybex 770T/790T Treadmill Part Number Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill. 3. Operate the unit at all levels to verify proper operation.
  • Page 177 Cybex 770T/790T Treadmill Part Number Remove shield 1. Loosen, but do not remove the seven screws securing the shield to the base using a Phillips screwdriver. Item Description Qty. Base Screws Shield 2. Remove shield by sliding sideways and then vertically off of base.
  • Page 178 Screws Motor Base Plate Motor Controller 2. Remove the motor controller. Cybex may want this part back for evaluation. Contact Cybex Customer Service at 888-462-9239. Install motor controller 1. Position the motor controller in place on the motor base plate.
  • Page 179 Cybex 770T/790T Treadmill Part Number Connect cables to motor controller 1. Connect the cables to the motor controller. This includes; the power in (INPUT), display cable (COMM.), elevation cable (INCLINE), drive motor cable (OUTPUT) and resistor (DB). Item Description Qty.
  • Page 180 Cybex 770T/790T Treadmill Part Number Install motor cover 1. Place the motor cover into position vertically by aligning the two tabs and four plastic connectors. Two plastic connectors are mounted in the front cover and two in the motor cover. If motor cover top does not fit properly, loosen the side screws as needed.
  • Page 181 Cybex 770T/790T Treadmill Part Number Remove power cord 1. Remove the mounting screw securing the mounting bracket in place using a Phillips screwdriver. Item Description Qty. Power Cord Power Cord Inlet Mounting Bracket Mounting Screw 2. Unplug the power cord from the power cord inlet.
  • Page 182 Cybex 770T/790T Treadmill Part Number 2. Unplug the treadmill from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance. • Electrical charge can remain in unit after unplugging. • Keep water and liquids away from electrical parts.
  • Page 183 Cybex 770T/790T Treadmill Part Number Remove On/Off switch Take notice of which cables are connected to the On/Off switch. 1. Disconnect the six fast-on connectors that connect to the On/Off switch. Item Description Qty. To power inlet (White) To power inlet (Black)
  • Page 184 Cybex 770T/790T Treadmill Part Number 2. Connect the two white fast-on connectors to the on/off switch. Item Description Qty. To power inlet (White) To power inlet (Black) On/Off switch To line filter (Black) To power supply (Brown) To power supply (Blue)
  • Page 185 Cybex 770T/790T Treadmill Part Number 3. Operate the unit at all levels to verify proper operation. Power Inlet Tools Required: • Phillips screwdriver • Flat head screwdriver Disconnect power source 1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located under the front end of the unit, or on the front right side panel.
  • Page 186 Cybex 770T/790T Treadmill Part Number Remove power inlet Take notice of which cables are connected to the power inlet. 1. Disconnect the three fast-on connectors that connect to the power inlet. Item Description Qty. Power Inlet To Ground Stud (Green)
  • Page 187 Cybex 770T/790T Treadmill Part Number Install power inlet 1. Insert the new power inlet into the hole in the mounting plate. Ensure power inlet is positioned correctly. Item Description Qty. Mounting Plate Power Inlet 2. Connect the three fast-on connectors to the power inlet.
  • Page 188 Cybex 770T/790T Treadmill Part Number Install motor cover 1. Place the motor cover into position vertically by aligning the two tabs and four plastic connectors. Two plastic connectors are mounted in the front cover and two in the motor cover. If motor cover top does not fit properly, loosen the side screws as needed.
  • Page 189 Cybex 770T/790T Treadmill Part Number Remove motor cover 1. Loosen, but do not remove the two front cover screws securing the motor cover using a Phillips screwdriver. Item Description Qty. Motor Cover Front Cover Screws Plastic Connectors 2. Remove motor cover by carefully lifting vertically. Do not break the four plastic connectors.
  • Page 190 Cybex 770T/790T Treadmill Part Number Remove line filter Take notice of which cables are connected to the line filter. 1. Disconnect the two fast-ons connectors that go from the line filter to the motor controller. Item Description Qty. To On/Off Switch (White)
  • Page 191 Cybex 770T/790T Treadmill Part Number 6. Connect the black cable from the motor controller to the terminal on the line filter. Install shield Using a Philips screwdriver tighten the seven screws securing the shield to the base. Item Description Qty.
  • Page 192 Cybex 770T/790T Treadmill Part Number Incline Motor Tools Required: • Phillips screwdriver • Block, 4" (10 cm) (2) • 9/16” Open end wrench • 9/16” Socket wrench • Tape measure Disconnect power source 1. Toggle the on/off (I/O) power switch to the off (O) position. The on/off (I/O) power switch is located under the front end of the unit, or on the front right side panel.
  • Page 193 Cybex 770T/790T Treadmill Part Number 2. Remove motor cover by carefully lifting vertically. Do not break the four plastic connectors. Disconnect incline motor cable 1. Remove the ground wire screw securing the ground wire using a Phillips screwdriver. Item Description Qty.
  • Page 194 Cybex 770T/790T Treadmill Part Number 4. Lift and remove the elevation motor from the treadmill. Calibrate Incline motor 770T, 790T 1. Plug the incline motor cable into the motor controller connector. Item Description Qty. Motor Controller Connector Incline Motor Cable...
  • Page 195 Cybex 770T/790T Treadmill Part Number Install incline motor 1. Place the elevation motor in position on the treadmill. Item Description Qty. Retaining ring Tube nut shaft Tube nut Tube nut mounts Motor mount shaft Sleeve Elevation motor Frame mounts 2. Install one retaining ring on the motor mount shaft and one on the tube nut shaft.
  • Page 196 Cybex 770T/790T Treadmill Part Number Install motor cover 1. Place the motor cover into position vertically by aligning the two tabs and four plastic connectors. Two plastic connectors are mounted in the front cover and two in the motor cover. If motor cover top does not fit properly, loosen the side screws as needed.
  • Page 197 Cybex 770T/790T Treadmill Part Number Remove back cover Remove four screws securing back cover to console assembly using a Phillips screwdriver. Item Description Qty. Console Assembly Back Cover Screws Remove fan 1. Unplug the fan cable by un-latching connector (J19) from the MCC board.
  • Page 198 Cybex 770T/790T Treadmill Part Number 2. Remove the six screws securing the fan and duct to the console assembly using a Phillips screwdriver. Item Description Qty. Console Assembly Louver Duct Screw The louver is held in place by the duct.
  • Page 199 Cybex 770T/790T Treadmill Part Number 2. Plug fan cable into connector (J19) on MCC board. Item Description Qty. Fan Cable MCC Board Install back cover Install the four screws securing the back cover to the console assembly using a Phillips screwdriver.
  • Page 200 Cybex 770T/790T Treadmill Part Number Display Board Tools Required: • Phillips screwdriver • ESD (Electrostatic Discharge) grounding strap • USB stick (CP-23199) Disconnect power source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance.

  • Page 201: Remove The Six Screws Securing The Fan And Duct To The Console Assembly Using A Phillips Screwdriver

    Cybex 770T/790T Treadmill Part Number Remove fan 1. Unplug the fan cable by un-latching connector (J19) from the MCC board. Item Description Qty. Fan Cable MCC Board 2. Remove the six screws securing the fan and duct to the console assembly using a Phillips screwdriver.

  • Page 202: Console Assembly

    Cybex 770T/790T Treadmill Part Number Remove display board Repairs and Service. Do not damage the wires or connectors when installing or removing cables. 1. Disconnect the display board cable from the MCC board connector (J16). a) Press in the top of the cable connector.
  • Page 203 Cybex 770T/790T Treadmill Part Number Install display board 1. Install the four screws securing the display board to the console assembly using a Phillips screwdriver. Item Description Qty. Console Assembly Display Board Connector Display Board Display Board Screw 2. Connect the display board cable to the MCC board connector (J16).
  • Page 204 Cybex 770T/790T Treadmill Part Number 2. Plug fan cable into connector (J19) on MCC board. Item Description Qty. Fan Cable MCC Board Install back cover Install the four screws securing the back cover to the console assembly using a Phillips screwdriver.
  • Page 205 Cybex 770T/790T Treadmill Part Number E3 View Monitor Tools Required: • Phillips screwdriver • 11/32” Nut driver • ESD (Electrostatic Discharge) grounding strap Disconnect power source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance.
  • Page 206 Cybex 770T/790T Treadmill Part Number Remove fan 1. Unplug the fan cable by un-latching connector (J19) from the MCC board. Item Description Qty. Fan Cable MCC Board 2. Remove the six screws securing the fan and duct to the console assembly using a Phillips screwdriver.
  • Page 207 Cybex 770T/790T Treadmill Part Number 2. Unplug control board cable and Audio Visual cable from the E3 View monitor. Item Description Qty. Control board cable A/V cable Coax cable 3. Unscrew the coax cable from the E3 View monitor. 4. Remove the ground cable from the E3 View monitor using an 11/32” nut driver.
  • Page 208 Cybex 770T/790T Treadmill Part Number 2. Install the nine screws securing the E3 View Monitor to the console using a Phillips screwdriver. Item Description Qty. Console Assembly E3 View Monitor Screw Ground wire screw 3. Install the ground cable to the E3 View monitor using an 11/32” nut driver.
  • Page 209 Cybex 770T/790T Treadmill Part Number Install fan 1. Install six screws securing fan and duct to console assembly using a Phillips screwdriver. The louver is held in place with the duct. Item Description Qty. Console Assembly Louver Duct Screw 2. Plug fan cable into connector (J19) on MCC board.
  • Page 210 Cybex 770T/790T Treadmill Part Number Item Description Qty. Console Assembly Back Cover Screws Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill. 3. Operate the unit at all levels to verify proper operation.
  • Page 211 Cybex 770T/790T Treadmill Part Number Item Description Qty. Console Assembly Back Cover Screws Remove fan 1. Unplug the fan cable by un-latching connector (J19) from the MCC board. Item Description Qty. Fan Cable MCC Board Page 211 of 261...
  • Page 212 Louver Duct Screw The louver is held in place by the duct. Remove Cybex GO monitor cables 1. Unplug the power, ethernet cable, and control board cable from the Cybex GO monitor. Item Description Qty. Power cable Cat6 ethernet cable...
  • Page 213 Cybex 770T/790T Treadmill Part Number Remove Cybex GO monitor 1. Remove six screws securing Cybex GO monitor and bezel to console assembly using a Phillips screwdriver. Item Description Qty. Console Assembly Cybex GO monitor and bezel Screw 2. Remove Cybex GO monitor and bezel.
  • Page 214 Cybex 770T/790T Treadmill Part Number Install Cybex GO monitor cables 1. Plug the power, ethernet cable, and control board cable into the Cybex GO monitor. Item Description Qty. Power cable Cat6 ethernet cable Coax cable Control board cable 2. Screw the coax cable into the Cybex GO monitor.
  • Page 215 Cybex 770T/790T Treadmill Part Number 2. Plug fan cable into connector (J19) on MCC board. Item Description Qty. Fan Cable MCC Board Install back cover Install the four screws securing the back cover to the console assembly using a Phillips screwdriver.
  • Page 216 Cybex 770T/790T Treadmill Part Number Wireless Heart Rate Board Tools Required: • Phillips screwdriver • Flat head screwdriver • ESD (Electrostatic Discharge) grounding strap Disconnect power source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance.
  • Page 217 Cybex 770T/790T Treadmill Part Number Remove wireless heart rate board The wireless heart rate board is installed with double sided tape. Remove only if replacing with a new wireless heart rate board. 1. Unplug the wireless heart rate cable by un-latching connector from the wireless heart rate board.
  • Page 218 Cybex 770T/790T Treadmill Part Number Item Description Qty. Console Assembly Back Cover Screws Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill. 3. Operate the unit at all levels to verify proper operation.
  • Page 219 Cybex 770T/790T Treadmill Part Number Remove headphone jack 1. Remove two screws securing headphone jack cover to handset using a Phillips screwdriver. Item Description Qty. Headphone jack cable Headphone jack cover Screw Handset 2. Unplug headphone jack cable from connector J6 on MCC board (connector on right).
  • Page 220 Cybex 770T/790T Treadmill Part Number 2. Screw the headphone jack cable into the headphone jack cover and tighten by hand. 3. Plug the headphone jack cable into the connector J6. Item Description Qty. Headphone jack cable Headphone jack cover Screw Handset 4.
  • Page 221 Cybex 770T/790T Treadmill Part Number Remove handset assembly 1. Remove eight screws securing handset to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Repairs and Service. Do not damage the wires or connectors when installing or removing cables.
  • Page 222 Cybex 770T/790T Treadmill Part Number 4. Carefully lift handset assembly and unplug the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire (located under the MCC board). Item Description Qty. MCC board...
  • Page 223 Cybex 770T/790T Treadmill Part Number 3. Install eight screws securing handset assembly to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill.
  • Page 224 Cybex 770T/790T Treadmill Part Number Remove handset assembly 1. Remove eight screws securing handset to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Repairs and Service. Do not damage the wires or connectors when installing or removing cables.
  • Page 225 Cybex 770T/790T Treadmill Part Number 4. Carefully lift handset assembly and unplug the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire (located under the MCC board). Item Description Qty. MCC board...
  • Page 226 Cybex 770T/790T Treadmill Part Number 3. Unplug USB cable and graphics board cable from CardioTouch screen. Item Description Qty. CardioTouch screen USB board USB cable Thumb control cables Membrane cable Graphics board cable 4. Unplug thumb control cables from handset.
  • Page 227 Cybex 770T/790T Treadmill Part Number 7. Remove seven screws and ground cable from CardioTouch screen using a Phillips screwdriver. Item Description Qty. Handset Screw Ground cable CardioTouch screen Membrane cable 8. Remove the CardioTouch screen and membrane cable from handset.
  • Page 228 Cybex 770T/790T Treadmill Part Number 2. Place CardioTouch screen in place in handset. Item Description Qty. Handset Screw Ground cable CardioTouch screen Membrane cable 3. Install ground cable with a screw in location shown and tighten by hand. 4. Install remaining six screws by hand.
  • Page 229 Cybex 770T/790T Treadmill Part Number 7. Install USB cover to two support brackets using two screws and a Phillips screwdriver. Item Description Qty. Screw USB cover Support bracket 8. Plug USB cable and graphics board cable into CardioTouch screen. Item Description Qty.
  • Page 230 Cybex 770T/790T Treadmill Part Number 2. Route iPod cable through notch in access cover. 3. Install eight screws securing handset assembly to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Complete installation 1. Plug the power cord into the power outlet.
  • Page 231 Cybex 770T/790T Treadmill Part Number Remove handset assembly 1. Remove eight screws securing handset to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Repairs and Service. Do not damage the wires or connectors when installing or removing cables.
  • Page 232 Cybex 770T/790T Treadmill Part Number 4. Carefully lift handset assembly and unplug the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire (located under the MCC board). Item Description Qty. MCC board...
  • Page 233 Screw USB Board Install USB board 1. Install the two screws securing the USB board to the access cover using a Phillips screwdriver. Install the USB board with the Cybex logo in the upper right corner. Item Description Qty. Access Cover...
  • Page 234 Cybex 770T/790T Treadmill Part Number 2. Install the two screws securing the access cover to the handset using a Phillips screwdriver. Item Description Qty. Handset Screw Access Cover Install handset assembly 1. Place handset assembly in position and plug in the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire.
  • Page 235 Cybex 770T/790T Treadmill Part Number 3. Install eight screws securing handset assembly to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill.
  • Page 236 Cybex 770T/790T Treadmill Part Number Remove handset assembly 1. Remove eight screws securing handset to console using a Phillips screwdriver. Item Description Qty. Handset assembly Console Screw Repairs and Service. Do not damage the wires or connectors when installing or removing cables.
  • Page 237 Cybex 770T/790T Treadmill Part Number 4. Carefully lift handset assembly and unplug the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire (located under the MCC board). Item Description Qty. MCC board...
  • Page 238 Cybex 770T/790T Treadmill Part Number Item Description Qty. iPod Cable Access Cover (Shown for reference) MCC Board Connector Notch Install handset assembly 1. Place handset assembly in position and plug in the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire.
  • Page 239 Cybex 770T/790T Treadmill Part Number Complete installation 1. Plug the power cord into the power outlet. 2. Verify the power cord is not being pinched under the front of the treadmill. 3. Operate the unit at all levels to verify proper operation.
  • Page 240 Cybex 770T/790T Treadmill Part Number 3. Unplug cables from MCC board by un-latching connectors with the following procedure: a) Press in the top of the cable connector. Item Description Qty. DO NOT PULL CONNEC- TOR OUT BY THE WIRES! Step a, Latch...
  • Page 241 Cybex 770T/790T Treadmill Part Number Remove heart rate grips 1. Remove two screws from each bottom grip using a Phillips screwdriver. Item Description Qty. Top grip Bottom grip Handset Screw Heart rate wire top (Red) Heart rate wire bottom (Black) 2.
  • Page 242 Cybex 770T/790T Treadmill Part Number Install handset assembly 1. Place handset assembly in position and plug in the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire. Item Description Qty. MCC board...
  • Page 243 Cybex 770T/790T Treadmill Part Number Disconnect power source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance. • Electrical charge can remain in unit after unplugging.
  • Page 244 Cybex 770T/790T Treadmill Part Number 3. Unplug cables from MCC board by un-latching connectors with the following procedure: a) Press in the top of the cable connector. Item Description Qty. DO NOT PULL CONNEC- TOR OUT BY THE WIRES! Step a, Latch...
  • Page 245 Cybex 770T/790T Treadmill Part Number Remove MCC board 1. Carefully unplug the following cables from the MCC board; display (J16), console (J15), CSAFE (J18) and gray audio (J14). NOTE: Depending on the configuration, some cables may not be present. Item Description Qty.
  • Page 246 Cybex 770T/790T Treadmill Part Number 2. Install the four screws securing the MCC board to the console using a Phillips screwdriver. Item Description Qty. MCC Board Screw Console 3. Plug the following cables into the MCC board; display (J16), console (J15), CSAFE (J18) and radio (J14).
  • Page 247 Cybex 770T/790T Treadmill Part Number Install handset assembly 1. Place handset assembly in position and plug in the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire. Item Description Qty. MCC board...
  • Page 248 Cybex 770T/790T Treadmill Part Number E-stop Cover and Motion Sensor Tools Required: • Phillips screwdriver • ESD (Electrostatic Discharge) grounding strap Disconnect power source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance.
  • Page 249 Cybex 770T/790T Treadmill Part Number 3. Unplug cables from MCC board by un-latching connectors with the following procedure: a) Press in the top of the cable connector. Item Description Qty. DO NOT PULL CONNEC- TOR OUT BY THE WIRES! Step a, Latch...
  • Page 250 Cybex 770T/790T Treadmill Part Number Remove E-stop cover 1. Remove the three screws securing the E-stop cover to the console using a Phillips screwdriver. Item Description Qty. Screw Console E-stop Cover Motion Sensor Screw 2. Remove the E-stop cover. Remove motion sensor 1.
  • Page 251 Cybex 770T/790T Treadmill Part Number Install handset assembly 1. Place handset assembly in position and plug in the following cables: graphics board (J12), handset membrane (J9), contact heart rate grips (J7) and the ground wire. Item Description Qty. MCC board...
  • Page 252 Cybex 770T/790T Treadmill Part Number Item Description Qty. MYE Universal Receiver Module 900/800 MHz, AD-26036 Cable, RJ45, AW-19404 Disconnect Power Source Unplug the power cord from the power outlet. Shock and electrocution hazard. • Unplug unit and let sit 10 minutes before cleaning or performing maintenance.
  • Page 253 Cybex 770T/790T Treadmill Part Number Item Description Qty. Console Assembly Back Cover Screws Install wireless audio receiver module 1. Remove adhesive backing from wireless audio receiver module. 2. Install wireless audio receiver module in location shown on console assembly. Item Description Qty.
  • Page 254 Cybex 770T/790T Treadmill Part Number 4. Route RJ45 cable as shown and plug into gray audio connector (J14) on MCC board. Install back cover Install the four screws securing the back cover to the console assembly using a Phillips screwdriver.

  • Page 255: Schematics

    Cybex 770T/790T Treadmill Part Number Schematics Schematic 770T LED Display Page 255 of 261...
  • Page 256 Cybex 770T/790T Treadmill Part Number Schematic 770T E3 View Monitor Page 256 of 261...
  • Page 257 Cybex 770T/790T Treadmill Part Number Schematic 770T Cybex GO Page 257 of 261...
  • Page 258 Cybex 770T/790T Treadmill Part Number Schematic 790T LED Display Page 258 of 261...
  • Page 259 Cybex 770T/790T Treadmill Part Number Schematic 790T E3 View Monitor Page 259 of 261...
  • Page 260 Cybex 770T/790T Treadmill Part Number Schematic 790T Cybex GO Page 260 of 261...
  • Page 261 Columbia Center III - 9525 West Bryn Mawr Ave, Rosemont, IL 60018 • 800-351-3737 • 847-288-3700 • FAX 800-216-8893 www.cybexintl.com...

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