Procedure 6.3 - Upper Display Does Not Illuminate - Precor C100i Service Manual

Procedure 6.3 - Upper Display does not Illuminate

1. Because this is self powered unit, the display will not illuminate until it is used or the
optional external power supply is equipped. If the optional external power supply is
equipped, the display should be constantly illuminated.
2. If the optional external power supply is not equipped, skip to step 5.
3. Disconnect the optional external power supply from the C100i and measure between
the inner and outer sleeves of the power supply's output jack with a DC voltmeter. You
should measure approximately 18 VDC.
4. If the voltage measured in step 3 was significantly low, replace the optional external
power supply. If the voltage measured in step 3 was 0 Vdc, disconnect external power
supply from its AC outlet and measure the voltage at the AC outlet. If the AC outlet
voltage is normal replace the optional external power supply. If the AC outlet voltage is
significantly low or 0 Vdc, the AC system must be inspected by an electrician.
5. Troubleshoot the generator per Procedure 6.4.
6. If the generator was found to be good, the problem will be in either the lower PCA,
upper PCA or the upper to lower PCA interconnect cable.
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.
7. Remove the right side cover and disconnect the interconnect cable from the lower
PCA.
8. The following voltage reading must be taken while the unit is in motion. Extreme care
must be taken to keep meter wires, hands, etc. clear of all moving parts. Using a DC
voltmeter, measure the voltage between TP24 (7.5V) and TP14 (DGND). Refer to
Diagram 6.2. The voltage measured should be approximately 7.5 Vdc. If the voltage is
significantly low, replace the lower PCA. Additionally, the DS1 and DS2 LED's should
illuminate.
9. Reconnect the interconnect cable to the lower PCA and repeat the voltage
measurement in step 8. The voltage measured should be approximately 7.5 Vdc. If the
voltage is significantly low, the problem is in the upper PCA or the upper to lower PCA
interconnect cables.
C100i Adaptive Motion Trainer
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