C842, C842i, C846, C846i Upright and Recumbent Cycle
Page 33
Procedure 6.5 - No or Incorrect Pedaling Resistance
1. If the display is not illuminated, go to Procedure 6.3.
2. For C842, C842i, C846i and C846 version 2 units, skip to step 15. For C846 version 1 units,
continue with step 3.
3. Enter the “manual” program and set the work level at “level 20”. Pedal the cycle and confirm
that there is no resistance or that the resistance is abnormally low.
Note:
The voltage readings in this procedure will vary with the pedaling rate. Pedal the cycle at
approximately 60 RPM with the work level set at “10” while taking the voltage readings in this
procedure. Resistance readings must be taken with the power off and the cycle idle.
4. Use a DC voltmeter to measure the voltage between terminals 4 (black wire) & 6 (white
wire) of J1 on the lower PCA (see Diagram 6.4). The voltage should measure approximately
3.85 Vdc ± 0.5 Vdc.
5. If the voltage is missing or significantly lower than 3.85 Vdc, continue with step 6.
6. If the voltage is approximately 3.85 Vdc, but there is no resistance, measure the voltage
between terminals 1 (red wire) and 4 (black wire) of the J1 connector on the lower PCA. The
voltage should measure approximately 18 -19 Vdc ± 1 Vdc. Measure the voltage between
terminals 1 (red wire) and 9 (yellow wire) of the J1 connector on the lower PCA. The voltage
should measure approximately 2 Vdc ± 0.5 Vdc.
7. Set the on/off switch in the off position. Disconnect the J1 connector from the lower PCA.
Measure between terminals 1 and 9 of the J1 connector. The ohmmeter should read
approximately 1.5 Ω ± 0.5Ω. If the reading is open (∞) or significantly high replace the load
resistor per Procedure 7.11.
Note:
Do not reconnect the J1 connector, removed in step 6, until the resistance measurements in step
9 are completed.
8. Measure between the “EXC” and “S” terminals on the alternator with an ohmmeter (See
Diagram 6.8). The ohmmeter should read approximately 5 Ω ± 0.5Ω.
9. Set the ohmmeter on the “diode” scale. Connect the common lead of the ohmmeter to the
“P” terminal and the Ω lead to the “B” terminal of the alternator. The ohmmeter should read
open (∞). Connect the common lead of the ohmmeter to the “P” terminal and the Ω lead to
the “E” terminal of the alternator. The ohmmeter should read approximately 0.5.
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