Maintenance and Troubleshooting   |   6-49
  Decimal  Alarm
 Bit  Value  Type  Alarm Condition / Description and Suggested Corrective Action
 0  1  Fault  f: HC-OBMC communication problem
This serious system Fault condition indicates the Host Controller board cannot 
establish reliable communications with the Microcontroller board.
Corrective Action:
Take appropriate safety precautions and cycle the analyzer AC power o for a 
minimum of 15 seconds before cycling it on again.
If this doesn’t correct the alarm, take appropriate safety precautions, open the 
Lower Enclosure, and:
•  From the Info dialog box and click the HC Reset button to reset the Host 
Controller board.
If this still doesn’t correct the alarm, open the Electronics Enclosures, and:
-  Reset the Host Controller board (press SW100, Lower Enclosure – see 
Figure 6-15).
-  Reset the Microcontroller board (press SW400, Upper Enclosure – see 
Figure 6-16).
•  Check the connections of the cable between the Host Controller (J300) and 
Micro-Interface (J104) boards. Inspect it for damage (cuts, nicks, burn marks, 
etc.).
•  Replace the Microcontroller, Host Controller, and/or Micro-Interface 
boards. Contact AMETEK to verify operation before removing any of these 
boards.
 1  2  Fault  f: Analytical data not received
This serious system Fault condition indicates the Host Controller board is not 
receiving analytical data from the Microcontroller board.
Corrective Action:
Take appropriate safety precautions and cycle the analyzer AC power o for a 
minimum of 15 seconds before cycling it on again.
If this doesn’t correct the alarm, take appropriate safety precautions, open the 
Lower Enclosure, and:
•  From the Info dialog box and click the HC Reset button to reset the Host 
Controller board.
If this still doesn’t correct the alarm, open the Electronics Enclosures, and:
-  Reset the Host Controller board (press SW100, Lower Enclosure – see 
Figure 6-15).
-  Reset the Microcontroller board (press SW400, Upper Enclosure – see 
Figure 6-16).
•  Check the connections of the cable between the Host Controller (J300) and 
Micro-Interface (J104) boards. Inspect it for damage (cuts, nicks, burn marks, 
etc.).
•  Replace the Microcontroller, Host Controller, and/or Micro-Interface 
boards. Contact AMETEK to verify operation before removing any of these 
boards.
Setup (tab)Analyzer 
Info
Setup (tab)Analyzer 
Info