11-2 
 
 
No.  Name  P/N  Test Item After 
Replacement 
Remarks 
1  Alarm lamp board PCBA    051-003208-00 
Check whether the lamp is 
turned on in red, yellow, 
/ 
3 
 
Main screen CPU board 
FRU (A9) 
 
115-077947-00(A9 US) 
115-077949-00(A9 
Canada) 
5.1 Power-on self-test 
For A8, the 
A8 software 
package 
should be 
upgraded 
after the 
maintenance. 
5 
service kit (Top Hat 
115-066849-00 
Rotate and push the encoder 
/ 
6 
Fresh gas encoder knob 
service kit 
115-066848-00 
Rotate encoder to check its 
/