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Troubleshooting & Repair Teledyne API M100E Analyzer Operation Manual
256
5. Follow the procedures defined in Section 12.6 to confirm that the analyzer’s vital functions are working
(power supplies, CPU, relay PCA, keyboard, PMT cooler, etc.).
Refer to Figure 3-3 or the general layout of component
s and
sub-assemblies in the analyzer.
Refer to the wiring interconnect diagram and interconnect list in Appendix D.
12.1.1. FAULT DIAGNOSTICS WITH WARNING MESSAGES
The most common and/or serious instrument failures will result in a warning message displayed on the front
panel. Table 12-1 contains a list of warning messages, along with their meaning and recommended corrective
action.
It should be no
ted that if more than two or three warning messages occur at the same time, it is often an
indication that some fundamental analyzer sub-system (power supply, relay board, motherboard) has failed
rather than an indication of the specific failures referenced by the warnings. In this case, a combined-error
analysis needs to be performed.
The analyzer will alert the user that a warning is active by displaying the keypad labels MSG and CLR on the
front panel and a text message in the top center line of the display as shown in this example:
SAMPLE AZERO WARNING SO2=XXX.X
< TST TST > CAL
MSG
CLR
SETUP
The analyzer will also issue a message to the serial port and cause the red FAULT LED on the front panel to
blink.
To view or clear a warning message press:
SAMPLE RANGE = 500.0 PPB SO2 =XXX.X
TEST CAL MSG CLR SETUP
If warning messages re-appear,
the cause needs to be found. Do
not repeatedly clear warnings
without corrective action.
Press CLR to clear the current
warning message.
If more than one warning is
active, the next message will
take its place.
Once the last warning has been
cleared, the analyzer returns to
SAMPLE Mode.
SAMPLE RANGE = 500.0 PPB SO2 =XXX.X
< TST TST > CAL MSG CLR SETUP
SAMPLE SYSTEM RESET SO2= X.XXX
< TST TST > CAL MSG CLR SETUP
In WARNING mode, <TST TST>
keys replaced with TEST key.
Pressing TEST switches to
SAMPLE mode and hides warning
messages until new warning(s)
are activated.
MSG indicates that one or more
warning message are active but
hidden. Pressing MSG cycles
through warnings
In SAMPLE mode, all warning
messages are hidden, but MSG
button appears
Figure 12-1: Viewing and Clearing Warning Messages
04515F DCN6048