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700 EEROM
701 AMPL CAL
702 ELAP TIM
703 AMPL CAL
improper sequence of storing data in EEROM. Check the EEROM
with the following steps:
1. Place the WR PROT/WR ENA jumper on the A2 controller
assembly in the WR
ENA
position.
2. On the spectrum analyzer, press
a
MORE
i
SF
2,
SERJfICE
CAL DATA, FLATNESS
,and
FLATNESS
DATA. Enter a
value of 130. Press
PREV
MENU, STORE DATA, YES, and (DISPLAY).
3.
Press
INTEN,
enter an intensity value of 90, and press
STfHE
INTEZ
.
4.
Press
MQRE
i
OF 2 FOCUS, enter a focus value of 128, and press
STORE
FCKUS.
Turn the (LINE) switch off, then on, cycling the
power.
5. If errors are still present, the EEROM A2U501 is defective. Refer
to the EEROM replacement procedure in Chapter 5, “Replaceable
Parts.”
Checksum error of EEROM A2U501.
Checksum error of frequency response correction data.
Checksum error of elapsed time data.
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
(X),
MBRE
1
OF
2, FACTORY PRSEL PK
,(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 5, “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.
7-36 General Troubleshooting