Teledyne 3000ZA2G - Zirconium oxide analyzer - Manual (Page 67)

Trace Oxygen Analyzer Maintenance
Teledyne Analytical Instruments 55
5.4 System Self Diagnostic Test
1. Press the SYSTEM button to enter the system mode.
2. Use the ◄► arrow keys to move to More, and press
ENTER.
3. Use the ◄► arrow keys to move to Self-Test, and press
ENTER.
The following Items are tested:
Table 5-1: Self-Test Result Display
Power: OK 5V and +/-15V power supplies
Analog: OK Measurement and range ID DACs
If any item above fails this test, it will be listed on the VFD display
followed by a code number instead of “OK”
5.5 Major Internal Components
The zirconium sensor assembly is accessed by removing the top
cover of the analyzer. The electronic PC boards are accessed by opening
the door on the front panel. The gas piping is illustrated in Figure 2-3
and the major electronic components locations are shown in Figure 2-4,
in Chapter 2.
CAUTION: SEE WARNINGS ON THE TITLE PAGE OF THIS
MANUAL.
The 3000ZA2G contains the following major components:
 Analysis Section
 Zirconium oxide sensor assembly
 Sample system
 Power Supply
 Microprocessor
 Displays
 5 digit LED meter