System Number Error Possible Cause Trouble Shooting
DOCKING
3.8
Coupling Door
Sensor Error
- Actuator door sensor failed - Replace sensor
3.9
Stepper Motor
- Open
Winding
N/A
- Replace connector
- Replace wiring harness
- Replace stepper motor
3.10
Stepper Motor
- Current
Control
Timeout
N/A
- Replace connector
- Replace wiring harness
- Replace stepper motor
3.11
Invalid or No
S/N
N/A N/A
3.12
Docking cycle
not completed
- This fault will be present at power
up if the rover had any error while
docking.
- Redock the rover
3.13
Docker not
ready
- Docker did not respond to rover.
1. Turn docker off and back on
2. Wait two minutes
3. Dock the rover again. If the
problem does not go away then
check IR circuitry.
3.14
Dock coupling
switch error
- Docker door sensor is bad
- Docker IR board is bad
- Rover IR board is bad
- Wiring harness is bad
- Replace door sensor
- Replace docker or rover IR
board
5-24