HP 8562E Service Manual page 257

700 EEROM
701 AMPL CAL
702 ELAP TIM
703 AMPL CAL
704 PRESELCT
Program ROM Checksum Errors (705 to 710)
705 ROM U306
706 ROM U307
707 ROM U308
708 ROM U309
709 ROM U310
710 ROM U311
7-36 General Troubleshooting
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,
value of 130. Press PREV MENU, STORE DATA, YES, and (DISPLAY).
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.
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),
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.
Checksum error of program ROM A2U306.
Checksum error of program ROM A2U307.
Checksum error of program ROM A2U308.
Checksum error of program ROM A2U309.
Checksum error of program ROM A2U310.
Checksum error of program ROM A2U311.
FLATNESS DATA. Enter a
SAVE PRSEL PK.