No. 60025, Issue 5. January 1999
9 Diagnostics and Fault Finding
43
9
Diagnostics and Fault Finding
DX Dolphin diagnostics can be examined from two platforms : from the Flash
Codes signalled with the System Status LED on the Dolphin (and on the HHP);
and from the Wizard which can provide more detailed information about the
fault.
Flash Code
Any fault condition on the DX system will cause the Dolphin’s System Status
LED to flash. Flashing occurs in bursts of flashes separated by a two second
pause. The number of flashes in each burst is referred to as the Flash Code and
indicates the nature of the fault. The title of the Flash Code fault is also
displayed by the HHP if connected to the faulty wheelchair.
Faults that affect the safety of the chair will cause the chair to stop while less
critical ones will be indicated but allow the chair to continue driving. Some
faults will automatically clear when the fault condition is removed, in which
case the System Status LED will become steady and the wheelchair may be
driven normally. Other faults are latched and must be cleared by turning the
DX System off, waiting for two seconds, turning it back on again.
DX System
Status LED
Flash Code
Likely Cause of Condition and Possible Action
1
DX Module Fault
(see Limp Mode below)
Cause: An Auto Download has occurred.
Action
<
Turn the Dolphin off then on again.
Cause: The Dolphin is not correctly programmed.
Action
<
Try reprogramming the Dolphin.
Cause: Connection between DX Modules may be faulty,
or there may be an internal fault in a Module.
Action
<
Check DXBUS connections and replace where
necessary.
<
If the Status LED on another Module is
flashing, replace the Module.
<
An expected module may not be present (e.g.
the DX Lighting Module).