Teledyne 3000PB Operating Instructions Manual page 66

5 Maintenance
During preamp testing there is a countdown in the lower right corner
of the screen. When the testing is complete, the results are displayed.
The module is functioning properly if it is followed by OK. A number
indicates a problem in a specific area of the instrument. Refer to Table 5-1
for number-code information. The results screen alternates for a time with:
The following failure codes apply:
Table 5-1: Self Test Failure Codes
5-8
Power: OK Analog: OK
Preamp: 2
Press Any Key
To Continue...
Power
0 OK
1 5 V Failure
2 15 V Failure
3 Both Failed
Analog
0 OK
1 DAC A (0–1 V Concentration)
2 DAC B (0–1 V Range ID)
3 Both Failed
Preamp
0 OK
1 Zero too high
2 Amplifier output doesn't match test input
3 Both Failed
Teledyne Analytical Instruments
Model 3000PB