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Service Addendum 1
Addendum A - SERVICE MANUAL
Agilent Technologies Model E4350B and E4351B Solar Array Simulators - P/N 5962-8233
For units with serial numbers:
E4350B US37410101 and up
E4351B US37430101 and up
Foreword
This addendum contains information for troubleshooting and repairing the Agilent E4350B and E4351B
Solar Array Simulators. The standard Service Manual for the Agilent Series 665xA DC Power Supplies (P/N
5959-3376), together with this Service Addendum, is shipped with the Solar Array Simulators when ordered
with Option 910.
Note This addendum is to be used along with the standard Service Manual for the Agilent Series 665xA
DC Power Supplies. When troubleshooting the Agilent E4350B/E4351B Solar Array Simulators,
start by following the procedures outlined in the standard Service Manual. This addendum
documents only the differences between the standard troubleshooting procedures and the
troubleshooting procedures for a Solar Array Simulator.
Areas of Difference
From a service point of view, the main difference between the SAS unit and the Agilent Series 665xA dc
power supply is the addition of a Digital Signal Processor (DSP) board located over the main A1 board. This
DSP board includes the portions of CV, CC, OV, and OC control circuits such as the programming DAC
circuits, as well as a microprocessor and programmable gate array that is used to generate the output I-V
curve. The output I-V curve simulates the output characteristics of a solar array.
The areas in the standard service manual that are changed by this addendum are:
• Test Equipment Required (Table 2-1)
• Basic Test Setup (Figure 2-1)
• Voltage and Current Values (Table 2-3)
• CC RMS Noise Measurement Setup (Figure 2-3)
• Performance Test Record (Table 2-15)
• Self-Test Error Codes/Messages (Table 3-2)
• Troubleshooting Flowcharts (Figures 3-2, 3-5 through 3-9)
• Initialization Program Listing (Figure 3-17)
• Cable and Connector Locations (Figure 3-18)
• Disassembly Procedures for A5 DSP Board (page 3-50)
• Digital Signal Processor (DSP) Board (page 4-14)
• Simplified Power/Control/DSP Circuits (Figure 4-9)
• Parts list (Tables 5-6, 5-7, 5-9 through 5-12)
• Test Points (Table 6-3)
• Schematic Diagrams (Figures 6-5, 6-6, 6-7, 6-10, 6-11, 6-12)
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