Service manual

7
1
Introduction
Scope
This manual contains information for troubleshooting and repairing the Electronic Load mainframe and modules to the
component level. Replaceable-parts lists and circuit diagrams for the mainframe are also provided. Verification procedures
are included to aid in determining the performance level either before or after repair. Calibration procedures and
specifications for the Electronic Load are included in the Operating Manual. Replaceable-parts lists, circuit diagrams, and
verification procedures for the load modules are given in the individual module service manuals, which should be
used with this manual
Related Documents
The following documents are also related to this manual:
• Agilent 6050A and 6051A Operating Manual Part No. 06050-90001
Provides specifications, local and remote operation, calibration procedures.
• Electronic Load Family Programming Reference Guide Part No. 06060 90005
Describes HPSL programming commands, status reporting.
Firmware Revisions
Some information in this manual, and SA (signature analysis) information in particular, is associated with specific versions
of the Electronic Load firmware. Each Electronic Load returns the revision number of its primary interface firmware in
response to the "*IDN?" query. Both primary and secondary interface ROMs have a label that also specifies the firmware
revision. See "Signature Analysis" in Chapter 3.
Manual Revisions
Agilent Technologies instruments are identified by a two-part, ten-character serial number, such as 2931A-00101. The first
five characters (e.g. 2931A) are the serial prefix, which is the same for all identically made instruments. The last five digits
(e.g. 00101) are a unique serial number assigned to each instrument. If a significant design change is made, the prefix
changes but the last five numbers continue in sequence.
This manual was written for Electronic Load mainframes with the same serial prefix and with serial numbers equal to or
lower than the one shown on the title page. If the prefix number on your Electronic Load mainframe is higher than the one
on the title page, then the Electronic Load mainframe was made after publication of the manual and may have hardware
and/or firmware differences not covered in the manual. If there are such differences, they are documented in one or more
"Manual Changes" sheets sent with the manual. If the prefix of your Electronic Load mainframe is below that listed on the
title page, then your Electronic Load mainframe was made prior to those covered in this manual. Refer to Appendix A for
any backdating information that may be required.