GE Datex-Ohmeda Aisys Carestation Reference Manual page 219

DU - ACB Communication Troubleshooting
Display Controller Related Errors
DCB RAM ERROR
Replace Display
Controller Board
14
Flowchart
M1046983 04/08
Start
Does ACB communicate in
Service Application?
Yes
Follow the appropriate path
based on Error Entry
DCB / ACB Comm Related Errors
ACB COM FAIL
ACB DCB COM FAIL
TXD
Replace DU CPU
Error Entry
DCB RAM ERROR
ACB COM FAIL
ACB DCB COM FAIL
LOSS OF GAS DELIVERY USER SETTINGS
LOSS OF VENT DELIVERY USER SETTINGS
No
Does M-GAS communicate in
Service mode?
Yes
Replace ACB Replace DU CPU
Check the ACB
TXD / RXD LED's
Which LED indicates
Activity?
7 Troubleshooting
No
RXD
Replace ACB
7-37