Emerson Daniel Danalyzer 1000 - Service, Troubleshooting, and Repair Instructions

MODEL 1000 SEP 2005
MAINTENANCE
5-9
5.5 SERVICE, TROUBLESHOOTING, AND REPAIR INSTRUCTIONS
This section contains service, troubleshooting, and repair information for the Analyzer. The
information is arranged as appropriate either by major subsystems or by major functions of the
instrument. Table 5-1, Alarms and Possible Causes, refers you to more frequent possible causes for
the hardware alarms.
Correct ALL alarms before recalibrating.
Table 5-1. Alarms and Possible Causes
ALARMS POSSIBLE CAUSE(S)
1. Application Checksum Failure Disk on Chip.
2. ROM Checksum Failure Disk on Chip.
3. RAM Diagnostics Failure Bad RAM.
4. Preamp Input 1 Out of Range Carrier gas (Helium) gone; air not purged from
carrier lines; power failure; bad thermistors; preamp
out of balance or failed; Analyzer temperature;
interconnection wiring; control; power supplies.
5. Preamp Input 2 Out of Range Same as number 4.
6. Preamp Input 3 Out of Range Same as number 4.
7. Preamp Input 4 Out of Range Same as number 4.
8. Preamp Failure Same as number 4.
9. Analog Output 1 High Measured value program for output #1 greater than
operator defined full scale range.
10. Analog Output 2 High Same as number 9.
11. Analog Output 3 High Same as number 9.
12. Analog Output 4 High Same as number 9.
13. Analog Output 5 High Same as number 9.