Check The Can Bus - Sirona ORTHOPHOS XG 3Dready Service Manual

3.2 Check the CAN bus

Measure the ohmic resistance on
board DX1 at connector X310 be-
tween pin 1 and pin 2 (unit HW ver-
sion < AG) or between measuring
pins CAN H and CAN L (unit HW ver-
sion ≥ AG).
120/0
Fault in the electric CAN bus
connection
Only for unit hardware versions ≥ BA:
Check cable L117 and manual re-
lease
A2 (without remote control).
Are cable L117 and manual release
A2 properly connected?
yes
Check jumpers for correct position on
board DX1, see section 5.13.1.
• Are the jumpers plugged in correctly?
yes
Cabling fault in the connec-
tors or modules
Check CAN plug connections from
board DX1 to the connected mod-
ules!
• Are the plug connections OK?
(see also service routine S012.4
(LED test), page 5-72)
yes
3 – 6
3.2
CAUTION
When unplugging CAN bus cables, it is essential that the voltage supply is ap-
plied at the module!
Ω

Check the CAN bus

Unit HW version BA and higher:
Check jumpers on board DX42 (if present) for
< Ω
50
correct setting, see 6.22.7Section .
Are the jumpers plugged in correctly?
yes
Ω
60 Continue to page 3-8
Plug in cable L117/manual release A2 (unit HW
version ≥ BA) properly, or replace if necessary.
No
No
Plug in jumpers correctly.
Make a plug connection.
No
Continue to page 3-7
Tab 3
No
Insert jumper
correctly.
59 38 399 D3352
D3352.076.01.26.02 09.2016