Alternator Test - Stairmaster FreeClimber 4600 PT Owner's Manual

ELECTRICAL TROUBLESHOOTING
5. Follow the white power connector wire to the where it plugs into the
main cable white wire, and disconnect it from the main cable
white wire.
6. Set your voltmeter to VDC. Connect the positive lead of your
voltmeter to the white wire from the power connector and touch the
gray casing of the alternator with the negative lead of your voltmeter.
7. DC voltage measured should be 12 - 19 VDC. Replace the power
connector if the voltage is not the same value as in step 3. Connect
the two white wires.
8. Remove the console knobs from the back of the console, lift the console
up, and disconnect the main cable from the console.
9. Test for 12 - 19 VDC in pins #1 (+) and #9 (-) in the main cable
connector. Replace the main cable if the voltage reading is not
the same as in step 7.
10. If all voltage readings have been within the specified range and the
console will not power up, the console should be replaced.

Alternator Test

11. Check for loose wiring connections on the alternator, diode and load
resistor (see Final Assembly Figure).
12. Perform the Positive Output to Field test on the alternator:
• Turn the power off
• Remove the black wire from the B+ terminal on the alternator
• Remove the brown wire from the field terminal on the alternator
• Place a short wire with alligator clips on the B+ terminal and the
field (FLD) terminal of the alternator
• Step on the machine for approximately 10 - 15 seconds
• If full resistance is achieved during this time, your alternator
has correct current flow. If no resistance is achieved, replace
the alternator.
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