ASPIRE SERVICE MANUAL
PAGE 1
2003SUNRISE MEDICAL
Section 1
Troubleshooting: No Power
Check that the voltage is going to the controller, set the
meter to dc volts and take a voltage reading from pin 1
(using the red lead) and pin 2 (using the black lead) to the
charger port of the VSI controller (see figure A1.1.1) If the
voltage meter reads approximately 24 volts, replace the con-
troller, if the meter reads less than 12 volts, proceed to the
next step.
Note: Make sure the polarity is correct. If the reading is inter-
mittent, there is a connection or Controller problem.If polari-
ty is reversed proceed to step 1.6
1.1 Test Joystick
1.0 Circuit Breaker Reset
A1.1.1
If On/off button is pressed and no light or bar is shown, check
for tripped circuit breaker (see figure A1.0.1) and make sure
all connections are clean and tight (including the batteries). If
the problem persists, then perform the following diagnostics.
1.2 Battery Test
If the total Battery Voltage reads approx. 24 V, and the Polarity is correct, replace the controller.
Check that the batteries are fully charged and in good con-
dition. Remove the seat, and the battery cover, with con-
troller connected and turned on, use the meter to check the
voltage across the battery terminals (see figure A1.2.1). If
the voltage meter reads between 12 -13.5 volts, then pro-
ceed to next step. If the voltage meter reads below
12volts,charge the batteries.
Note: To find a bad battery, use a battery load tester.
A1.2.1
If the voltage meter reads below 12 volts, charge the batteries.
A1.0.1
2
1
3