Tektronix 1705A END OF NON VOLATILE <2444> RAM TEST: 2444 TEST GOOD, PRESS [INPUT]KEY TO EXIT

Maintenance
6-6 1705A Spectrum Monitor
Once communicationwith the NOVRAM is verified, the microprocessorwill
attempt to store data. While attempting to store data, the following message is
displayed on the crt:
READING 2444:
DATA STOREDAT 60H TO 7F IN PROCESSOR
If data cannotbe stored in the NOVR AM, the following message will be
displayed on the crt:
ERROR : CANNOT STORE DATA
If data cannotbe stored, the probable fault is with either the NOVRAM (U812)
or U809 and associatedcomponents.
Once the NOVRAM test is successfully completed, therewill be an acknowledg-
ing crt display. See Figure 6-3.
END OF NON VOLATILE <2444> RAM TEST:
2444 TEST GOOD
PRESS [INPUT]KEY TO EXIT
Figure6 -3: 1705A CRT displaywhen the NOVRAM Test has been successfully
completed
There is a specialcase that can occur. In normal operation, the 1705A front-pa-
nel setup should be storedwhen the power is removed (either turned off or lost
due to power failure)so that it can be recalled when the instrument is powered
up again. If the 1705A does not come backwith its previous front-panel setup, it
will provide an errormessage. See Figure 6-4.