Agilent Technologies E4440A, Service Manual

Page: 412 / 436

412 Chapter 12
Post-Repair Procedures
Post-Repair Procedures
Post-Repair Procedures
Table 12-1 lists the adjustments, configuration or calibration constant
reset procedures, and performance verification tests needed after an
assembly replacement. Adjustments and performance verification tests
and the utility that resets the calibration constants and resets the
statistical data are located in the Performance Verification and
Adjustment Software.
Calibration constants are stored on most board assemblies. Several
PSA model numbers share the same board assembly, but require
different calibration constants.
After an assembly is replaced, find the assembly that has been replaced
in the left-hand column, and then perform the adjustment, test, or
configuration procedure shown in the adjustment column. After
successfully completing the necessary adjustment, test, or configuration
procedure, verify that the instrument meets specifications by running
the performance verification test or tests listed.
NOTE
Refer to your user’s guide for information on instrument warm-up
before performing any of the procedures listed in this chapter.
Table 12-1 Post-Repair Testing Requirements
Assembly
Adjustments, Tests, &
Configuration
Performance Verification
A1 Flat Panel Display Ensure that the display quality is
satisfactory. There should be no light
or dark lines or pixel “triplets”. None
A2 Front Panel
Interface Assembly Perform the Internal Front Panel test.
Press
System
,
More
,
Diagnostics
.
Ensure that the display quality and
brightness are satisfactory.
Ensure that the green “power on” and
yellow ‘standby” LEDs function
properly.
None
A3 Keyboard Assembly Internal Front Panel test None
A5 Power Supply Verify that the instrument powers up
correctly.
Check all power supply voltages using
an extender board.
None
A6 SCSI Board None None