Service Manual
5
Table of Contents
1. Introduction
Scope ............................................................................................................................................................7
Organization ..............................................................................................................................................7
Safety Considerations...................................................................................................................................7
Related Documents....................................................................................................................................7
Revisions ......................................................................................................................................................7
Manual Revisions ......................................................................................................................................7
Firmware Revisions...................................................................................................................................8
Electrostatic Discharge.................................................................................................................................8
2. Performance Tests
Introduction ..................................................................................................................................................9
Test Equipment Required .............................................................................................................................9
General Measurement Techniques................................................................................................................9
Current-Monitoring Resistor ......................................................................................................................10
Performance Tests ......................................................................................................................................10
Performance Test Record Sheets................................................................................................................10
3. Troubleshooting
Introduction ................................................................................................................................................19
Localizing the Problem...............................................................................................................................19
Test Equipment Required ...........................................................................................................................19
List of Equipment .......................................................................................................................................19
Troubleshooting Procedure ........................................................................................................................19
Using the *TST? Query..............................................................................................................................19
Firmware Revisions....................................................................................................................................20
ROM Replacement or ROM Update ..........................................................................................................20
Calibration Configuration Switch...............................................................................................................21
Troubleshooting Hints ................................................................................................................................22
Switching Amplifier Output Balancing......................................................................................................22
4. Principles of Operation
Introduction ................................................................................................................................................31
General Description....................................................................................................................................31
A1, A2, A3 Switching Amplifier Modules .................................................................................................31
A4 Mother Board Assembly.......................................................................................................................31
A5 Relay Range / Sense Assembly.............................................................................................................32
A6 Servo (Control) Assembly ....................................................................................................................32
A7 IEEE-488 (GPIB) / RS-232 Interface Assembly ..................................................................................32
A8 Digital Signal Processing Assembly .....................................................................................................32
A9 Input Power Assembly (208 Volt Input)...............................................................................................32
A9 Input Power Assembly (400 Volt Input)...............................................................................................32
A10 Auxiliary Power Supply......................................................................................................................33
A11 Front Panel Display Assembly............................................................................................................33
A12 Input Filter Assembly .........................................................................................................................33
A13 Bridge Capacitor Filter Assembly.......................................................................................................33
A14 Bias Power Supply..............................................................................................................................33
5. Replaceable Parts
Introduction ................................................................................................................................................35