General Troubleshooting & Service Teledyne API T703/T703U Calibrator Operation Manual
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5. Follow the procedures defined in Section 3.4.4 to confirm that the
calibrator‟s vital functions are working (power supplies, CPU, relay PCA,
keyboard, PMT cooler, etc.).
See Figure 3-5 for general layout of components and sub-assemblies in
the calibrator.
See the wiring interconnect diagram and interconnect list in Appendix D.
FAULT DIAGNOSIS WITH WARNING MESSAGES 8.1.1.
The most common and/or serious instrument failures will result in a warning
message being displayed on the front panel. Table 8-1 lists warning messages,
along with their meaning and recommended corrective action.
It should be noted that more than two or three warning messages occurring at the
same time is often an indication that some fundamental sub-system (power
supply, relay PCA, motherboard) has failed rather than an indication of the
specific failures referenced by the warnings. In this case, it is recommended that
proper operation of power supplies (See Section 8.4.3), the relay PCA (See
Section 8.4.7), and the motherboard (See Section8.4.9) be confirmed before
addressing the specific warning messages.
If a Warning Message is active, the FAULT LED flashes, the Param field
displays the Warning message, and the CLR button appears/becomes active
(press to clear Warning message).However, if there is more than one warning in
queue or if you are in the TEST menu and have not yet cleared the message, the
MSG button displays. The following display/touchscreen examples provide an
illustration of each:
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