61 25 665 D3437
132
D3437
.
076.01.15
.
02 06.2012
6 Troubleshooting
Sirona Dental Systems GmbH
6.2 Checking the CAN bus
Service Manual GALILEOS
6.2.1
Checking the CAN bus with the diagnostic function of
board DX1
Checking the CAN bus with the diagnostic function of board DX1
Board DX1 features a diagnostic function for diagnosing malfunctions of
the CAN bus via LEDs V700 and V701 (see wiring diagrams). The
following table indicates the operating status of the CAN bus and the
recommended error correction measures:
6.2.2
Jumper positions in the CAN bus
Jumper positions in the CAN bus
The jumpers are located on board DX1 at sockets X302, X303, X306,
X307, X309, X500, and X503 (see also wiring diagrams). If a cable is
connected to the socket, the corresponding jumpers must be set to the
outer position. If no cable is plugged in, the jumpers must be set to the
inner position. If a jumper is set to the inner position without a cable
plugged in, the CAN bus is interrupted at this location. Modules located
behind this location can no longer be connected to the CAN bus and,
therefore, do not function.
V700
V701
CAN bus operation
Error correction
Slow flashing
Slow flashing
CAN bus OK
Not required
Fast flashing
Off
CAN error, no communication with
board DX7, i.e. no display of error
messages
● Check cabling.
● Check CAN jumpers (Jumper
positions in the CAN bus [ → 132])
Fast flashing
Fast flashing
CAN error, no physical communication
with CAN bus possible; there is
probably a short circuit in the CAN
cable or on the board of a module.
● Disconnect CAN cables one after the
other (set jumpers to inner position!)
until the CAN bus functions again
(V700 and V701 flash slowly).
Replace faulty module.
Off
Fast flashing
CAN error, CAN bus TTP (time trigger
protocol) disturbed by defective,
constantly transmitting board (bus-
heavy).
● Disconnect CAN cables one after the
other (set jumpers to inner position!)
until the CAN bus functions again
(V700 and V701 flash slowly).
Replace faulty module.
Off
Off
System did not power up (DX11)
Switch unit off and on again and wait until
end of power-on time.
Summary of Contents for galileos
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