If you are not a Precor certified servicer, you must not attempt to service any Precor Product.
Call your dealer for service information.
WARNING: This service documentation is for use by Precor certified servicer pro-
viders only. Personal injury can result from electrical shock and/or mechanical moving
parts.
This service manual applies to the following treadmill models:
l GEN06 series treadmill: The GEN-06 treadmill base is defined as any treadmill pro-
duced between April 2006 and April 2011. GEN-06 Treadmills include the following
models; C952, C954, C956, and C966.
l TRM10 series treadmill: The TRM10 treadmill base is defined as any treadmill pro-
duced after April 2011 and is configured with a Pxx series console. All of the base and
console combinations are part of the "Experience" line of products.
This document contains information required to perform troubleshooting and replacement procedures required to repair and maintain this equipment including: general product information,
software diagnostic procedures, preventative maintenance procedures, inspection and adjustment procedures, troubleshooting procedures, replacement procedures and system block and
wiring diagrams.
Separate Base/Console Service Manuals
This document provides information to service the equipment base independent of the
installed console. For console service documentation, refer to the particular console service
manual.
Additional Documentation
There is also an online web version if you have internet access at:Online Service Manual
The following information provides general equipment and service information that will help
you to use this manual to properly repair and maintain the treadmill.
Orientation
The equipment orientation (front, right, left, back) used in manual is referenced to a user standing on the equipment facing the console.
Tools
General set of service and repair tools.
l US and Metric Hex Key setl Standard and Philips screw driver set
l US SAE and Metric Wrench setl DVM Multimeter
l Torque wrenchl Crank Puller (recommended Park Tool CCP-22)
l US SAE and Metric socket setl Belt Tension Gauge (recommended Kent-Moore BT-33-73-
F)
l Running belt tension gauge
(pn PPP00000002000710
Parts
IMPORTANT: Always purchase OEM replacement parts and hardware from Precor.
If you use parts not approved by Precor, you could void the Precor Limited Warranty.
Use of parts not approved by Precor may cause injury.
Exploded View Diagram and Parts List
There is a copy of the parts
the "Parts" on page111 chapter that you can use as a quick reference. It is recommended that
you go to the servicer partnersPrecor Connect (or Precor Connection) website to view the
Exploded View Diagram and Parts list, see "Parts" on page111.
.
Lubrication
Use only synthetic lubricants such as Mobile 1 Synthetic grease or Super Lube with Teflon.
Use of unapproved lubricants, cleaners, or solvents may void the bike warranty.
CAUTION: Do not apply any lubricants or wax to the deck and belt. Do not use Wax
Blast, silicon sprays, or other applied lubricants. The use of these lubricants will quickly
degrade the low-friction surface of the deck.
CAUTION: Do not use petroleum based lubricants on mechanical components such
as the lift, as this may result in degradation of nylon gearing mechanisms. Use only synthetic lubricants such as "Super Lube with Teflon" or "Mobile One Synthetic" grease
(RED).
Use of unapproved lubricants, cleaners, or solvents may void the treadmill warranty.
Cleaning Solutions
Wipe down equipment with recommended cleaning solution. Use dry cloth to remove residue
solution.
l General: 1 oz. mild soap (Simple Green) to 30 oz. water.
l Console and PVS: a diluted solution of one part 91% Isopropyl alcohol to one part
water.
CAUTION: Do not use acidic cleaners and do not spray directly onto the equipment
It is required that the treadmill be connected to and operated on a dedicated 20 amp AC
branch circuit. A Dedicated Branch Circuit is defined as a circuit fed by a single circuit breaker
feeding a single load, with a single non-shared neutral providing a return line. A treadmill operating from a non-dedicated branch circuit or a circuit breaker of less than 20 amps capacity will
not have the necessary power to operate normally under higher load conditions.
120 Vac Systems
120 VAC distribution systems utilize a single pole circuit breaker (power lead) and a neutral
lead connected to a common neutral (ground) bar. The AC. safety ground (green wire) is connected to a separate ground bar in the distribution system.
If it is determined that any of the above electrical conditions are in question, please consult with
a qualified electrician to make appropriate circuit changes.
CAUTION: The treadmill requires a 20-amp individual branch circuit grounded per
NEC (National Electric Code) guidelines or local region electric code.
IMPORTANT: If the AC circuit feeding a treadmill is found to be a non-dedicated
branch circuit or a circuit equipped with a capacity of less than 20 amps, the AC circuit
must be corrected before any reliable Troubleshooting can be performed. More
importantly, a non-dedicated branch circuit may constitute a safety hazard to the treadmill operator .
Input Power
Nominal 120 VAC models
l Operating voltage: 90 VAC to 132 VAC.
l Frequency: 47 65 Hz
Nominal 240 AC Models
l Rated Operating voltage: 180 VAC - 264 VAC.
NOTE: An Internal operating voltage range of 180 – 275 VAC with reduced per-
formance is allowed.
l Frequency: 47-65 Hz
Frame Ground
For operator safety and to minimize electrostatic discharge conditions the AC frame ground
continuity must also be verified to be a low resistance connection to the AC distribution ground
bar.
WARNING: Only Precor certified servicers and technicians are permitted to service
Precor products. Personal injury can result from electrical shock and/or mechanical
moving parts.
Safety guideline you need to know and follow:
l Read and follow all Warning notices to protect yourself from personal injury.
l Read and follow all Caution notices to prevent damage to the equipment.
l Read the owner’s manual and follow all operating instructions.
l Operate the equipment on a solid, level surface.
l Visually check the equipment before beginning service or maintenance operations. If it
is not completely assembled or is damaged in anyway, do not attempt to operate the
equipment.
l Never place liquids on any part of the equipment while performing service.
l To prevent electrical shock, keep all electrical components away from water and other
liquids.
l Do not use accessory attachments that are not recommended by the manufacturer.
Non-OEM accessories can cause injuries.
l Do not stand or climb on the handlebars, display enclosure or cover.
l On a self-powered unit, it will either be necessary to either equip the unit with the
optional external power supply or have an assistant pedal on the unit while voltage
measurements are being taken. Because of the danger of working on the unit while it is
in motion using the optional external power supply is strongly recommended.
l On ATM units when the stairarms are in motion; the generator will operate and produce
potentially hazardous voltages even when the battery is disconnected.
l On AMT units with Cardio Theater PVS units will have external power supply and
coaxial cable routed through the bottom of the unit to the top of the display console.
Cord management must be maintained
l On ATM units, a pinching hazard exists when the unit is operated. It is possible to ser-
iously pinch a finger. The AMT can be mechanically locked by inserting a screwdriver
through the primary sheave and frame.
l On treadmills, removing the hood exposes high voltage components and potentially dan-
gerous machinery. Exercise extreme caution when you perform maintenance procedures with the hood removed.
When servicing the equipment:
l During service operations you will be very close to moving machinery and voltage bear-
This section provides a method of verifying the TRM10/GEN06 Treadmill Base operation.
Check the treadmill operation at the end of a maintenance procedure and when it is necessary
to ensure that the treadmill is operating properly.
"Operation Verification Procedure" below
"Operation Verification Checklist" on the facing page
Operation Verification Procedure
Perform these tests to verify operation of the unit.
1. Plug the power cord into the wall outlet and switch the power switch to the "ON" position.
2. Press and hold the RESET key for a minimum of 6 seconds, if errors are logged, the
error log will be displayed. Make note of all logged error codes and odometer reading.
The odometer reading can help you determine the age and relevance of the error.
Note that on P80 consoles, go to the error event log to view logged errors, see "Access-
ing the Service Software" on page10.
3. Clear the error log; select a logged error and then hold down the QUICK START key
until the error is deleted.
4. Enter the Hardware Validation Test by entering access code 5,1,7,6,5,7,6,1:
a. Press either the STOP, PAUSE or RESET buttons and then enter
5,1,7,6,5,7,6,1
Note: For P80 consoles, refer to "Accessing the Service Software" on page10.
5. Select and run the Display Test, the Keypad Test, and the Heart Rate Test, Verify that
each test is successfully completed with the following results:
l LEDs light
l Keys all function
l Heart rate is acquired and displayed
6. Enter the Machine Tests submenu and run the Belt Speed Test and the Incline Test.
Verify following results:
l Running belt operates from minimum to maximum speed.
l Incline moves up and down and the A/D value is approximately 6000+/-500 at 0%
incline.
7. Press the RESET key to exit diagnostics. On P80 consoles, press Back to exit diagnostic and return to the Home page.
8. Operate the unit in the Manual program. Adjust the speed of the running belt to 2–3
mph. Operate the treadmill for at least 5 minutes while walking on the unit.
9. Concentrate on the feel of the running belt, the sound of the drive motor and rollers. Be
on the alert for unusual noises, smells or vibrations.
10. Observe the LED’s on the console. Make sure that each LED lights as the information
corresponding to that LED is displayed on the console.
11. Press the INCLINE UP key while viewing the console. Confirm that the running deck
inclines and the incline indicator increments to 15% as the INCLINE UP key is continually pressed.
12. Press the INCLINE DOWN key while viewing the console. Confirm that the running
deck returns to a level position and the incline indicator decrements to 0% as the
INCLINE DOWN key is pressed. (Depending on the software configuration of the console, the lowest level of incline can be either 0% or -3%).
13. While the running belt is in motion, press the STOP button and verify the running belt
stops.
14. Restart the running belt and while the running belt is in motion, pull the ESTOP cord
and verify the running belt stops.
15. Press and hold the RESET key for a minimum of 6 seconds and view the error log
again. This time check for any NEW error codes that may have resulted from the verification tests. Repair any new error codes and repeat the verification tests.
Note that on P80 consoles, go to the Event Log page to view logged errors, see
"Accessing the Service Software" on page10.
Operation Verification Checklist
Use this checklist to track that the verification procedure tests were successfully completed
and that the treadmill operation has been verified:
Check, record, and then clear any errors in the error log.
Verify that all LEDs function properly during the Hardware Validation tests.
Verify that all keys on the keypad function properly during the Hardware Val-
idation tests.
Verify that the heart rate functions normally and displays a valid heart rate.
Verify the running belt drive system functions properly throughout the minimum
to maximum range of control. All drive system components (deck, belts, rollers,
IFT) are free of excessive noise, vibrations, or smells.
Verify the Incline A/D value is approximately 6000+/-500 at 0% incline, the
incline operates within the complete range of the lift when the UP or DOWN
keys are pressed and is free of excessive noise or vibrations.
Verify the STOP button stops the running belt from moving.
Verify that pulling the ESTOP cord stops the running belt from moving.
Check for any new error codes that may have been logged in the error log during
Standard access codes are used across Precor cardio product lines to access a set of common service software functional modes used to retrieve equipment product and usage information, manage club settings, and hardware maintenance validation/diagnostic test software.
Each mode is assigned a unique service access code that is entered into the console to begin
the functional mode. There are three functional modes: Hardware Validation, Club Parameters, and Information Display:
l Hardware Validation is a set of functional diagnostic tests used to troubleshoot and
verify proper operation.
l Club Parameters also referred to as Club Settings are used manage and configure the
usage of the machine.
l Information Display provides information about the equipment usage, hardware, soft-
ware, and error log data.
The user interface, available information, settings, etc. will vary based on the console model base configuration. Make sure to use the information and instructions for your particular console application. Consoles that support standard service access codes include:
• Standard Consoles• P30 console
• P10 consoles• P80 console
• P20 console
Service Access Codes
The following table lists the standard service access codes and associated functional mode.
5,6,5,1,5,6,5Club ParametersConfigure machine and workout
parameter limits.
‡
6,5
Information Display
Note:‡Access code 65 not used on the P80, use access code 51765761.
‡
View usage, SW, and Error Log
information.
Accessing the Service Software
The process to access the service code functional mode varies between console models. Go
to instructions listed below for your particular console to learn how to access the service
l Sequentially type in the service access code using the following control keys to rep-
resent an equivalent numeric value:
1 = Workouts key
5 = Enter key
6 = Up key
7 = Down key
NOTE: The access code must be correctly and quickly entered or the process will
abort. Restart the process from the beginning if this occurs.
P80 Consoles
To access the service software:
l Make sure the P80 is set to the Welcome home page.
l Press and continue holding down the PAUSE key while pressing the Volume and
Channel Up/Down keys in the following sequence ("X" pattern) to open the service software login page:
Press/hold PAUSE while selecting CH Up > Vol Down > Vol Up > CH Down
NOTE: Keep the keypad entry interval to greater than 1 second between
key presses. Key press interval speed faster than 1 second may result in an
unsuccessful login. .
l Successful login will open the service access login page. Use the touch-screen keypad
to type in the service access code > Continue to open the functional mode software.
To access the Hardware Validation (5,1,7,6,5,7,6,1) diagnostic test page:
Select System Settings (
> opens
Diagnostic tests and hardware calibration
Settings
page) >System Test (
page.
System Settings
page)
Navigating the Service Software Menus
Console hardkeys and softkeys used to navigate the service software menus.
Standard, P10, P20, & P30 consoles:
The service software is organized in a sequential top-menu sub-menu architecture with instructions shown on the workout information display. Use the console keys to navigate and select
service mode operations.
CONSOLE KEYFUNCTION/DESCRIPTION
Up/DownMoves up and down through the current menu.
OKSelects current menu item or confirms setting.
BACK/CLEAR
PAUSE• Exits service mode
• Returns to the previous menu level without saving changes.
• Hold Back to exit the Display test.
• Press and hold PAUSE will open the Error Log or show the "Stuck
Key" message when there are no logged errors.
P80 series consoles:
The P80 uses the touch-screen to view, navigate, and perform the diagnostic tests. Follow onscreen prompts to access and complete tests.
Hardware Validation - Diagnostic Tests (51765761)
Service Access Code: 5,1,7,6,5,7,6,1 (see "Service Access Codes" on page10)
The set of available diagnostic tests will vary based on console model. Select console model to
view the available diagnostic tests.
Standard, P10, P20, & P30 consoles:
DIAGNOSTIC
TEST
Display Test
Keypad Test
PVS Key Test
Heart Rate Test
Tests the console LEDs. Successively press the OK key to verify each group
of LEDs and verify that all LED's illuminate. Press Back to exit the test.
An illuminated LED map of the function keys will be shown. Press each individual key and verify that the corresponding LED extinguishes. Press and hold
BACK to exit the test
Not used, OEM test.
Tests the unfiltered, filtered, and pulse values. Grasp the grips to test the hand
held heart rate. Use a Polar heart rate simulator to test the wireless heart rate.
Tests the belt speed in 0.1 mph increments showing the required Input
Voltage, Input Current to the treadmill, the Output Voltage, and Drive
Motor current at each speed.
Auto Stop Test
Tests the Auto Stop function showing the averaged foot plants and exerciser
"is detected"/ "is not detected" function. Foot plant averaging delay resets
with each speed change.
Incline Test
Tests the incline & Decline function. Allows you to verify the A/D number at
any incline level and the number of Glitches (communication time between
the LPCA and UPCA).
Stop Key Test
Tests the Stop Key function for P10 and P30 console s.
Test procedure prompts to press the Stop Button, then disconnect and reconnect the Lanyard E-Stop, and then press Stop to reset and exit the test.
P80 Series Consoles:
On P80 consoles, Diagnostic Tests are located on the Diagnostic tests and hardware calibration page:
l Access code 51765761
l select System Settings
l Select System Tests
l Opens Diagnostic tests and hardware calibration page, select test from menu.
DIAGNOSTIC
TEST
TEST DESCRIPTION
Auto Stop TestTests the Auto Stop function showing the averaged foot plants and exerciser
"is detected"/ "is not detected" function. Foot plant averaging delay resets
with each speed change.
Belt Speed TestTests the belt speed by stepping the speed in 0.1 mph increments and show-
ing the required drive motor current.
Incline TestTests the incline & Decline function. Allows you to verify the A/D number at
any incline level and the number of Glitches (communication time between
the LPCA and UPCA).
USB TestShows detected USB devices.
Touchscreen TestUse finger to draw line across touch-screen. Select Finish to exit.
Touchscreen Calibration
Touch the cross points on the touch screed to proceed through the calibration
procedure.
Backlight TestTests the console LEDs. Successively press the OK key to verify each group
of LEDs and verify that all LED's illuminate. Press Back to exit the test.
RGB TestTest the touch-screen RGB colors. Touch screen to advance through the red,
Heart Rate TestTests the Hands ON/OFF Status, Raw and Filtered pulse values. Grasp the
Tests the backlight level on the speed and incline parameter displays.
Tests the speed and incline numeric indicators.
touch grips to test the hand held heart rate. Use a Polar heart rate simulator to
test the wireless heart rate.
TEST DESCRIPTION
Club Parameter - Settings (5651565)
Service Access Code: 5, 6, 5, 1, 5, 6, 5 (see "Service Access Codes" on page10)
Club Parameters or Club Settings are used to manage and configure the usage of the
machine. Select a console model to view the available club parameters.
Standard, P10, P20, & P30 consoles:
CLUB PARAMETERDESCRIPTION
SAFETY CODE
(Treadmill only)
SELECT LANGUAGE
SET UNITSRange: U.S, Metric
SET MAX WORKOUT
TIME
SET MAX PAUSE
TIME
SET COOL DOWN
TIME
Range: Enable/Disable
Default:Disabled
Enable or disable* the Safety Code. When enabled, the setting
requires a password "1234" to be entered to start the unit.
Default:English
Sets the default language for all workouts on this machine. Lan-
guage for single use workouts can still be set by the user from the
workout options.
Default: U.S.
Sets units of measure to US standard* or Metric.
Range: 1 to 240 min, NO LIMIT
Default: 60 min
Sets the maximum allowable user workout time per session.
Range: 1 to 120 sec
Default: 120 sec
Sets how long the equipment remains in a paused banner during a
workout before resetting.
Range:1 to 5 min
Default: 5 min
Sets the amount of time that a cool down period will occur at the
end of every workout. Factory default is 5 minutes. Settable in 1
minute increments.
Default: none
Sets a metric that may be of specific importance to the specific facil-
ity or fitness trainer. The selected metric will scroll across the
screen at regular intervals during the workout.
SET SPEED LIMITRange: Unit max allowable speed
Default: 12 mph (19 kph)
Sets the maximum speed the user can set the unit to.
SET INCLINE LIMITRange: unit max incline
Default: 15%
Sets the maximum user incline value.
HIDDEN PROGRAMS Default: disabled
Either enabled or disabled*, the setting allows the unit to access
specialized fitness tests designed for police, fire fighters and the
military.
REMOTE SPEED
Not supported.
CONTROL
AUTO STOP
CONFIGURE
(Treadmill only)
SET CUSTOM
PROGRAM 1/2
*
Sets the Auto Stop setting to ON* or OFF. ON brings treadmill to
gradual stop.
Range: ON/OFF
Default: OFF
Create a customized workout program (residential use).
Note:* not available on all models.
3 Standard Service Software
P80 Series Consoles:
The P80 Club parameters include additional configuration parameters for TV, internet connectivity, and Preva Net functionality. Refer to the Owner's manual for the complete description of available Club parameters.
The P80 Club parameters are located on System Settings page:
l Access code 51765761.
l Select System Settings.
l Select form the list of available System Setting menus.
SYSTEM SETTINGS
MENU
CONNECTIVITY settings
Connectivity settings allow you to configure or provides information about the equipment’s network connection.
DISPLAY settingsDisplay settings allow you to configure the, Measurement units,
Standby Mode Delay, Internet Browser Access, and Preva® Net
Panel.
MANAGE SETTINGSUsed to save your equipment settings to a USB flash drive, or to
Note:* not available on all models.
Used to register the P80 after Connectivity interface has been configured and established.
import settings from a USB flash drive.
DESCRIPTION
Information Display (65)
Service Access Code: 6, 5 (see "Service Access Codes" on page10)
Information Display provides information about the equipment usage, hardware, software,
and error log data. . Select console model to view the available information and data.
Standard, P10, P20, & P30 consoles:
METRICDESCRIPTION
ODOMETERDisplays the total number of accumulated miles on the unit.
This value is stored in the upper PCA in the console so if
the PCA is replaced the accumulated miles would start
again from "0".
HOUR METERDisplays the total number of hours that the unit took to
accumulate unit miles.
This value is stored in the upper PCA in the console so if
that PCA is replaced the hours of use would start again
from "0".
BELT RATINGDisplays a belt rating from 10 (best) to 0 (worst). Reset-
table to 10 by holding QuickStart.
U-BOOT SWDisplays the software part number and current version
installed in the upper PCA (console). This is the unit specific console software.
LOWER SWDisplays the current version of software loaded in the
Machine Controller.
METRICS BOARD SWDisplays the current version of software loaded in the met-
rics board.
SER NUMBERDisplays the model and serial number of the equipment.
The base serial number can be set here using the
WinCSAFE computer software. The factory default is
NONE.
USAGE LOGDisplays the type of workout programs the users are
accessing most frequently.
"Error Log" on page73• Displays the number of times each workout has been
used and displays the associated cumulative minutes.
• Displays the user preferences in workout selection.
TIP: You can quickly access the Error log by holding down
the PAUSE key. Will show the STUCK KEY message
when there are no logged error codes.
Standard, P80 consoles:
The P80 does not support service access code 65. The equipment usage, SW, and Error Log
information is accessed from various submenus on the Settings page (access code
51765761).
l Access code 5,1,7,6,5,7,6,1.
l Select SETTINGS menu for the desired information.
SETTINGS
(Informality menus)
INFORMATION
ABOUTABOUT menu provide basic equipment information includ-
ing:
model/serial numbers,
SW pn/version
network connectivity
heart rate information
Event Log, select to open Error Log History Table
EQUIPMENT USAGEProvided equipment usage information includes:
Cumulative Workouts Sessions
Last Workout Start Date Time
Last Workout End Date Time
SOFTWARE DOWNLOADSEnable auto-software downloading.
REFLASHINGReflash CPA, MFE, or GUI software.
AVAILABLE UPDATESSoftware update notification.
CURRENT USERCurrent user name and role.
Adjustment procedures provide you with the step-by-step adjustment instructions to bring systems and components into specification. Perform the adjustment procedures whenever a
trouble symptom points to a particular component and after a major component is removed/replaced.
Available Adjustment Procedures
."Drive Belt Tension & Alignment Adjustment" on the facing page
"Running Belt Tension and Tracking Adjustment" on page26
This procedure provides instruction to verify and make adjustments to the Drive Belt tension.
The Drive Belt tension should be verified anytime the drive belt is removed or replaced.
NOTE:This procedure assumes that the drive belt has been installed and seated
onto the drive roller and drive motor pulleys.
Procedure
Review entire procedure before starting.
Drive Belt Tension Verification
2. Switch the input power OFF and unplug the power cord.
3. Remove the front hood.
Drive Belt Alignment
4. Verify the drive belt alignment. Make sure that the drive belt is aligned parallel to the
frame rail. Measure the belt to frame rail distance at the drive roller pulley and at the
drive motor pulley. If the measurements are not the same, adjust the belt position on the
drive motor pulley to match the drive roller belt distance.
CAUTION: Improper drive belt alignment will cause damage and/or break the drive
belt.
2. Place the belt tension gauge onto the drive belt.
Belt tension is adjusted by moving the drive motor position (forward or rearward) in an
iterative process until the belt tension meets specification.
4. Remove the drive belt. It is recommended that you walk the belt off the smaller drive
motor pulley.
5. Loosen the drive motor mount bolts, slightly move the drive motor either forward or rearward as required to increase or decrease the belt tension. Re-tighten the bolts.
6. Re-install the drive belt. It is recommended that you walk the drive belt onto the larger
drive roller pulley.
7. Measure and verify that the belt tension meets the Tension specification, see
Tension Specification
table. Note that there is a separate specification for New and
This procedure provides instruction to verify and calibrate the Lift Motor and incline system.
The Lift Motor calibration should be verified anytime the Lift Motor circuit breaker fails or is
replaced or any incline system component is replaced.
Procedure
Review entire procedure before starting.
1. Toggle the treadmill circuit breaker from OFF to ON. The treadmill will begin to autoreset the running deck incline to the 0% incline level "Home" position (This is the Lift
Motor calibration reference position).
WARNING:Be aware that switching power ON will cause the Lift Motor actuator to
auto-reset moving the incline actuator and platform. Keep clear of incline system
components.
2. Set the treadmill circuit breaker to OFF and disconnect the power cord.
3. Access the Lift Motor actuator tube in one of the following methods:
a. From the bottom by carefully laying the treadmill on its side
b. From the front by connecting power and raising the treadmill to maximum incline
and resting the frame base onto blocks securely placed under the front corners of
the frame (removes weight from the incline platform and Lift Motor actuator tube).
Switch power OFF and unplug the power cord.
4. Disconnect the actuator tube from the incline platform mounting bracket by removing
the hitch pin and clevis pin.
5. Set the actuator reference gap (distance between the top of the actuator tube (or nut) to
the bottom of the Lift Motor housing) to [[[Undefined variable General.TRM10ActuatorRefGap]]]. Firmly hold the jack screw from turning and rotate the
actuator tube to adjust the reference distance.