Agilent Technologies 66000A, Service Manual, Page: 7 / 53

Overview 7
1
Overview
About This Manual
This manual is a complete guide for servicing the Agilent 66000A Modular Power System (MPS) Mainframe.
Troubleshooting information for the Agilent 661xxA MPS Power Modules is provided in the module service manual (see
"Related Documents"), which should be used with this manual.
Note
Troubleshooting the Agilent 66000A MPS Mainframe requires the use of one working Agilent 661xxA
MPS Power Module.
This manual is organized into the following major sections:
•
Overview discusses safety and equipment considerations to be aware of when troubleshooting. It also lists the tools and
equipment required for troubleshooting.
•
Verification consists of a series of tests that are used to help isolate a fault. It includes the selftest sequence that runs
automatically at power-on and verifies the integrity of the microprocessor, the GPIB and serial interfaces, and the
memory.
•
Disassembly procedures are used to disassemble the instrument for repair.
•
Troubleshooting procedures systematically verify selected circuits to isolate the cause of a problem. Suggestions for
remedying the problem are also provided. Troubleshooting procedures are provided for the following circuits:
§
Bias Supplies.
§
Microprocessor.
§
RAM and ROM Memory.
§
GPIB and Serial Interfaces.
§
Discrete Fault Indicator/Remote Inhibit (DFI/RI) Circuitry.
§
Trigger Circuits.
§
Power Module Communication.
§
Keyboard Accessory Port.
•
Replacement Parts lists part numbers for electrical components and miscellaneous chassis parts.
•
Schematics and component location diagrams are provided as an aid in troubleshooting and repair.