| Secondary Interface Troubleshooting | 41 | 
| Voltage and Current DAC | 41 | 
| Readback DAC Circuits | 43 | 
| Readback Multiplexer (U20): | 43 | 
| Signature Analysis | 45 | 
| Primary SA | 45 | 
| Front Panel SA | 45 | 
| Secondary SA | 46 | 
| Power Section Troubleshooting | 51 | 
| Main Troubleshooting Setup | 52 | 
| Troubleshooting  | 53 | 
| Power Section Blocks | 54 | 
| Troubleshooting  | 57 | 
| Troubleshooting  | 57 | 
| Troubleshooting Bias Supplies | 58 | 
| Troubleshooting Down Programmer | 61 | 
| Troubleshooting CV Circuit | 61 | 
| Troubleshooting CC Circuit | 62 | 
| Troubleshooting OVP Circuit | 62 | 
| Troubleshooting PWM & Clock | 63 | 
| Principles of Operation | 65 | 
| Introduction | 65 | 
| GPIB Board | 65 | 
| Primary Microprocessor | 65 | 
| Address Switches | 65 | 
| EEPROM | 67 | 
| Isolation | 67 | 
| Secondary Microprocessor | 67 | 
| 67 | |
| Analog Multiplexer | 67 | 
| Status Inputs | 67 | 
| Front Panel Board | 68 | 
| Address Latches and Decoders | 68 | 
| Volts and Amps Output Ports and Displays | 68 | 
| RPG and Latches | 68 | 
| 68 | |
| Mode Indicators | 70 | 
| OVP Adjust Control | 70 | 
| Power Clear | 70 | 
| Power Mesh and Control Board | 70 | 
| Overview | 70 | 
| Power Mesh | 71 | 
| Control Board | 73 | 
| Replaceable Parts | 79 | 
| Introduction | 79 | 
| Ordering Information | 80 | 
| Component Location and Circuit Diagrams | 101 | 
6
