254 Chapter4
Assembly Replacement
Procedure 12 . EEROM
Procedure 12.EEROM
Removal/Replacement
CAUTION The EEROM is replaced with the power on. Use a nonmetallic tool to
remove the defective EEROM and install the new EEROM.
NOTEIn EC-series analyzers the EEROM reference designator is U23.
1. Turn the spectrum analyzer
LINE switch off. Remove the spectrum
analyzer cover assembly and fold out the A2, A3, A4, and A5
assemblies as described in “Procedure 5. A2, A3, A4, and A5
Assemblies,” steps 3 through 5.
2. Turn the spectrum analyzer
LINE switch on.
3. Set the WR PROT/WR ENA jumper on the A2 controller assembly to
the WR ENA position.
4. Press
CAL, MORE 1 OF 2, SERVICE CAL DATA, COPY EEROM. The
spectrum analyzer will store the contents of the EEROM into the
program RAM.
5. Using a nonmetallic tool, carefully remove the defective EEROM.
6. Carefully install a new EEROM.
7. Press
COPY TO EEROM. The spectrum analyzer will store the
contents of the program RAM into the new EEROM.
8. Turn the spectrum analyzer LINE switch off, then on, cycling the
power. Allow the power-on sequence to finish.
9. If error message 701, 702, or 703 is displayed, press RECALL,
MORE, and RECALL ERRORS. Use the STEP keys to view any other
errors.
10.If error message 701 or 703 is displayed, perform the "Front End
Cal" adjustment in the 8564E/8565E adjustment/diagnostic software
(see Chapter 2 , “Adjustment/Diagnostic Software”).
11.If error message 719 or 720 is displayed, the model number and/or
the option information has been corrupted. The spectrum analyzer
must be returned to an Agilent Technologies customer service center
to have this data restored.
12.If error message 704 is displayed, press
SAVE, SAVE PRSEL PK, and
PRESET.
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