C776i Stairclimber
Page 27
Procedure 6.4 - No Resistance
Note:
The term resistance in this case refers to the physical opposition to the downward movement of
the stairarm. That is, the greater the resistance, the slower fall rate and the lesser the resistance
the faster the fall rate.
1. Remove the left hand, right hand and front cover sections per Procedure XX.
2. Remove both of the wires from the “LOAD CONNECTIONS” on the lower printed circuit
assembly. Measure between the two wires with an ohmmeter for approximately 13Ω. If the
measurement is open or significantly high, replace the generator. If the measurement is
correct, replace both wires and continue with step 3. The wires may be connected to the
load connection terminals in any order.
3. The following A.C. voltage readings will be measured on the 3 PHASE GEN IN terminals.
While the C776i is in use, perform the same A.C. voltage reading between the red and
black, red and white and black and white wires. All three voltage readings should be
approximately 90 Vac at 60 steps per minute. See Diagram 6.4.
4. If the voltage measurements are present, replace the lower printed circuit assembly.
5. If the voltage measurements are absent, disconnect the three generator leads from the
3 PHASE GEN IN terminals and repeat the measurements in step 3 directly to the generator
wires.
6. If the voltage measurements are still absent, replace the generator. If the voltage
measurements are now present, replace the lower printed circuit assembly.
7. If all of the above test have been performed and the C776i is still not functioning correctly,
call Precor technical. support.
8.
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