Chapter 6 325
General Troubleshooting
System Analyzer Programming Errors (100 to 150)
700 EEROM Checksum error of EEROM A2U501.
701 AMPL CAL Checksum error of frequency response correction data.
702 ELAP TIM Checksum error of elapsed time data.
703 AMPL CAL Checksum error of frequency response correction data.
Default values being used.
704 PRESELCT Checksum error of customer preselector peak data.
External preselector data recalled in internal mode, or
internal preselector data recalled in external mode. To
clear the error, press RECALL, MORE 1 OF 2, FACTORY
PRSELPK, SAVE, and SAVE PRSEL PK.
Program ROM Checksum Errors (705 to 710)
The instrument power-on diagnostics perform a
checksum on each programmed ROM (A2 controller
assembly). If an invalid checksum is found for a
particular ROM, an error code is generated. If a
defective programmed ROM is found, replace it with
another ROM with the same HP part number. Refer to
Chapter 4, "Replaceable Parts."
Although some of these errors might result in a
blanked display, it is possible to read these errors over
HP-IB. Refer to "Troubleshooting to a Functional
Section" in this chapter.
705 ROM U306 Checksum error of program ROM A2U306.
706 ROM U307 Checksum error of program ROM A2U307.
707 ROM U308 Checksum error of program ROM A2U308.
708 ROM U309 Checksum error of program ROM A2U309.
709 ROM U310 Checksum error of program ROM A2U310.
710 ROM U311 Checksum error of program ROM A2U311.
RAM Check Errors (711 to 716)
The instrument power-on diagnostics check the
program RAM. This includes the two RAMs used for
STATE storage. If any STATE information is found to
be invalid, all data in that RAM is destroyed. A
separate error code is generated for each defective
program RAM. All RAM is backed-up by battery. See
"State- and Trace- Storage Problems" in Chapter 9.
711 RAM U303 Checksum error of system RAM A2U303.
712 RAM U302 Checksum error of system RAM A2U302.
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