Service, Troubleshooting, And Repair Instructions; Service, Troubleshooting, And Repair Instructions - Emerson Daniel Danalyzer 1000 Hardware Reference Manual

MODEL 1000
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.
ALARMS
1. Application Checksum Failure
2. ROM Checksum Failure
3. RAM Diagnostics Failure
4. Preamp Input 1 Out of Range
5. Preamp Input 2 Out of Range
6. Preamp Input 3 Out of Range
7. Preamp Input 4 Out of Range
8. Preamp Failure
9. Analog Output 1 High
10. Analog Output 2 High
11. Analog Output 3 High
12. Analog Output 4 High
13. Analog Output 5 High
MAINTENANCE
Table 5-1. Alarms and Possible Causes
POSSIBLE CAUSE(S)
Disk on Chip.
Disk on Chip.
Bad RAM.
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.
Same as number 4.
Same as number 4.
Same as number 4.
Same as number 4.
Measured value program for output #1 greater than
operator defined full scale range.
Same as number 9.
Same as number 9.
Same as number 9.
Same as number 9.
SEP 2005
5-9