Chapter 9 175
Front Panel/Motherboard Troubleshooting
A7 Motherboard Description
A7 Motherboard Description
Purpose
The Motherboard is an electrical link between many of the electrical assemblies in
the instrument. The main functions of this PC board include:
• Distribute power
• Control and common signals between all the measurement PC boards including
the A6 Midplane and the Front Panel Assembly
• Circuitry for fan speed control
• 10 MHz Reference distribution
Figure 9-1 Motherboard
The Motherboard is a horizontally mounted, located near the bottom of the
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