ALANTE DX/LT_SG_REVA_030112
9
SCENARIO 1: Press the on/off button and the LED array does not light up.
Before attempting to troubleshoot the power chair, make sure all connectors are connected and seated
properly. Make sure that the batteries are connected properly and fully-charged.
If the batteries are not fully
charged or connected properly, then voltage measurements may produce faulty readings.
Measure the voltage
across the battery box negative terminal and the battery box positive terminal on the underside of the battery
box to get battery voltage. If the batteries will not charge, go to “Scenario 2: Batteries will not charge.”
1. Check the circuit breaker.
•
If it is tripped – Reset it.
•
Not tripped – Go to the next step.
•
Tripped but does not reset – Remove the seat and the battery box. Open the battery box by removing
the 9 screws that fasten the cover. Remove the cover and measure voltage from the positive (red)
terminal of one battery to the negative (black) terminal of the opposite battery.
•
25VDC or (battery voltage) – Go to the next step.
•
0VDC - Go to step 14.
2. Measure voltage across pin 1 (B+) and pin 2 (B-) on the control unit (Joystick) charging socket.
•
0VDC – Go to the next step.
•
25VDC or (battery voltage) – Replace the control unit.
Prevent damage to the Joystick. Be careful when inserting the meter leads into the charging
socket. Do not allow the meter leads to touch each other, which will cause a short.
3. Disconnect the bus cable from the control unit (Joystick).
4. Measure voltage across pin 1 (+) and pin 4 (-) on the bus cable.
•
0VDC – Go to the next step.
•
25VDC or (battery voltage) – Replace the control unit (Joystick).
5. Remove the seat.
6. Remove the seat post.
7. Remove the 8 screws on the underside of the frame, which connect the shroud to the body of the power chair.
8. Disconnect the bus cable from the power module.
9. Measure voltage across pin 1 (+) and pin 4 (-) on the power module.
•
0VDC – Go to the next step.
•
25VDC or (battery voltage) – Replace bus cable.
Prevent damage to the (VR2) power module. Be careful when touching the leads on the
power module. Do not allow the meter leads to touch each other, which will cause a short.
10. Disconnect the power harness from the power module.
11. Measure voltage across the pin 1 (+) and pin 2 (-) on the power harness.
•
0VDC – Go to the next step.
•
25VDC or (battery voltage) – Replace the power module.
Before attempting to measure resistance, make sure there is no power to the circuit.
1 2 3 4
1 2
Inhibit
+ -
4 3 2 1
- +
Inhibit
Inhibit
+ -
