Removal and Replacement of Components
Ch. 10
TRACKMASTER
112
TMX428 TMX428CP & TMX58 Service Manual
317-160-406 Rev 4
May 2021
10.
Remove the remaining 3/8”
-16 screws and nylon washers.
The handrail is ready to be lifted off as an assembly.
11.
Reverse step 1 through step 10 to reinstall the replacement handrail.
Replacing the Main power switch
Tools Required
1/4” Hex Socket or Flat Blade screwdriver
3/32”
Flat Blade Screwdriver
Grounding Wrist Strap
Approximate time to complete: 30 min
1.
Turn the treadmill main power switch to the OFF position.
2.
Unplug treadmill plug from the wall receptacle.
3.
Allow the treadmill to discharge for 1 minute.
4.
Remove the two screws retaining the main power switch mounting plate.
CAUTION: Use ESD precautions, including wearing a grounding wrist strap that is
connected to an exposed metal connection point on the treadmill chassis.
5.
Gently pull the plate out, allowing the wires to feed through the hole.
6.
Unplug the four (4) wire connectors from the main power switch to be replaced.
CAUTION: When reconnecting the main power switch, insert the brown wire on top and
black wire on bottom, as shown in the picture in Step 8.
7.
With a small electrical flat blade screwdriver, push the holding clips on the sides of
the main power switch to allow it to slide out of the plate.
NOTE: The clips are part of the power switch housing and located on the back side of the
plate.
8.
Reverse step 1 through step 7 to reinstall main power switch while being sure to
follow the caution in step 6.
(2) Plastic Caps
(3) 3/8”
-16 Screws
(2) 3/8” Lock Washer
Nylon Washer
(2) #6-32 Screw
(2) #6-32 Nuts
Harness Jumper (Brown)
Harness Jumper (Black)
Main Harness (Brown)
Main Harness (Black)
