Stairmaster FreeClimber, Service Manual

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II. Section Two -Testing Without A Multimeter/Voltmeter
1. Inspect power supply board connectors at the following locations: load resistor (J6), inductive switch
(J3), console (J4), and external power supply (J1). Check for no frayed wires on battery connector (J5)
or alternator connector (J2).
2. Inspect U3, Q5, Q6 and Q7 to make sure that the hardware is tightened, there is sufficient heatsink
grease/sil pad, and that the solder is good. Check for plastic spacers between Q6 heatsink and Q7
heatsink.
3. Perform the “Jump Test”:
Jump test point JP1 on the internal power board. To do this, “bridge” the two
small holes located at “JP1” with a small flat blade screwdriver, a small wire, or a
paper clip. When you do this, does the console power up?
YES - Adjust the inductive switch closer to the alternator fins. Make sure the sensor (inductive switch )
is as close to the alternator fins as possible without actually touching the fins when in motion. Go to
step 3a .
NO - Swap the battery with one that is know to be good (from another machine that is known to be
working). Go to step 3b .
3a. Operate the unit as if performing a normal exercise session. If unit fails to operate
properly, replace inductive switch and retest unit.
3b. Operate the unit as if performing a normal exercise session. If unit fails to operate
properly, adjust inductive switch and perform step 3a.