P30 Amt '11 - Upper Display Does Not Illuminate - Precor AMT Series Service Manual

P30 AMT '11 - 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 AMT 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,
(on page 147).
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.
© Precor Incorporated, Unauthorized Reproduction and Distribution Prohibited by Law
Troubleshooting the Generator
Page 48