Systematic Mechanical Troubleshooting - Stairmaster Stratus Systems Owner's Manual

TROUBLESHOOTING
19. Use a voltmeter, set to Ohms to test the load resistor for a correct
reading of 1/2 Ohm between pins 1 and 2.
20. Plug the load resistor back into the power control board.
21. Check the main cable assembly for continuity and cross check
each wire in the cable to check for shorted wires (see the wiring
diagram ). Call StairMaster
for assistance. International customers should contact their local
distributors.

SYSTEMATIC MECHANICAL TROUBLESHOOTING

These steps should be performed in exactly the order written. Refer to the "Parts
Removal and Replacement" section of this manual for any disassembly and
assembly instructions.
1. Remove the neck covers (3300 CE only) and the side covers.
2. Adjust the Poly-V belt so that the compressed distance of the valve
spring is 1-11/16" (4.3 cm) (see Figure 22). Retest the machine if
Poly-V belt adjustment was necessary.
3. Verify the drive chain alignment and tension between the freewheel
of the intermediate shaft assembly and the pedal chain ring (see
Figure 20).
4. Remove the drive chain and inspect the chain for frozen links. Replace
the chain if any frozen links are found and tension the chain according
to the "Drive Chain" section of this manual.
5. Verify that the jam nut and bearing retainers on the crank assembly
are tight.
6. Spin the crank assembly with the drive chain removed and listen for
any clicking or grinding noises. The crank should spin freely 4 or 5
revolutions. Resume troubleshooting at step 7 if no noises are heard.
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