Procedure 6.4 - Troubleshooting the Generator
The generator performs three functions in the EFX. First, by controlling the amount of electrical
load applied to the generator, the user's pedalling resistance is controlled. Second, the generator
is used to charge the EFX's internal battery. Lastly, one of the generators six phase output
windings is monitored to determine when the unit is in use and when it is idle. This system also
determines the stride rate by determining the operating speed (output frequency) of the
monitored generator winding.
Warning
Because this is 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.
1. Perform the generator resistance test per Procedure 5.1. If any of the resistance
measurements are significantly high or significantly low, replace the generator.
2. The following voltage reading must be taken while the unit is in motion. Extreme care must
be taken to keep meter leads, hands, etc. clear of all moving parts. Using an AC voltmeter,
measure the voltage between 1 & 3, 2 & 3, 5 & 7 and 6 & 7 on J1 of the lower PCA. All AC
voltage readings will vary depending on the unit's stride rate at the time the measurement is
taken. At a stride rate of 100 strides per minute, all three voltage readings will be
approximately 100 VAC -110 VAC.
3. If any of the six readings in step 2 are significantly low, replace the generator.
Repair Parts for Precor EFX 546i Ellipticals SPORTSMITH net
Repair Parts for Precor EFX 546i Ellipticals...
Precor elliptical repair parts for...
Be aware that the resistance is often the part that requires repair. Resistance is managed magnetically, so often if the machine is working, but the resistance isn't setting correctly or at all, check the bolts that secure the magnets. If they are loose, the resistance will slip. If the bolts are fine, check the magnets themselves by using a refrigerator magnet and see if it is attracted or repelled by the your fridge magnet. If not, the magnets have de-magnetized and need to be replaced.
Use your flathead screwdriver to pry off the plate on the left side of the elliptical trainer.
Step 2
Look for the magnet and reed
switch. These elements will be roughly the same size, and the reed
switch should have a series of wires connected to it.
Step 3
Loosen the screw in the reed
switch using your screwdriver. Move the reed switch by hand until it
sits 1/8 inch from the magnet, then re-tighten the screw.
Step 4
Test the unit to see if the
display and heart rate monitor are working properly. If not, move the
reed switch slightly so it is closer or farther from the magnet, then
try the machine again. Once you've found the correct location for the
switch, tighten the screw to hold the reed switch in place.
Step 5
Replace the cover plate by snapping it into position by hand
God bless you
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