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10.2 Troubleshooting fundamental analyzer
operation
When the Analyzer is turned on, several actions will normally occur which indicate the
proper functioning of basic instrument sub-systems. These actions are:
1. The sample pump should start.
2. The green sample light on the front panel should turn on.
3. The Display should energize and display a log-on message followed by a
standard “Sample" display (See Fig. 2.2 for illustration of a normal
display).
If these actions all occur, it is probable that the Analyzer's Power Supplies, CPU, and
Display are working properly.
If any of these actions fail to occur, power and/or CPU operation should be checked as
follows:
10.2.1 Checking the power sub-systems
WARNING
HAZARDOUS VOLTAGES EXIST WITHIN THE INSTRUMENT
CHASSIS - USE CAUTION!
1. Check incoming line power for proper Voltage and Frequency.
2. Check the Circuit breaker on the Analyzer's rear panel.
3. Check the 3-wire safety power-input plug on the Analyzer's rear panel.
4. Check for proper internal AC power by confirming that the
Red(right-most) LED on the Power Supply Module is lit. If this LED is
not lit, replace the fuse at the bottom center of the Power Supply Module.
5. Check for proper DC Voltages by measuring for the following voltages on
the V/F Board:
+5V between TP4 and TP5
+15V between TP1 and TP3
-15V between TP2 and TP3
If any of these voltages are incorrect, check the DC Power Supply as
described in Section 10.6.4.
10.2.2 Checking the CPU and display
When the analyzer is turned on, the front panel display should energize and the green
"Sample" LED should light. If proper DC power is present (see Section 10.2.1), the
P/N 02163G1 Teledyne API Model 300 CO Analyzer Instruction Manual - Page 84