Power Supply - Agilent Technologies 8753ES Option 011 Service Manual

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Power Supply

Power Supply
Check the Rear Panel LEDs
Switch on the analyzer. Notice the condition of the two LEDs on the A15 preregulator at
rear of the analyzer. (See Figure 4-4.)
• The upper (red) LED should be off.
• The lower (green) LED should be on.
Figure 4-4 A15 Preregulator LEDs
Check the A8 Post Regulator LEDs
Remove the analyzer's top cover. Switch on the power. Inspect the green LEDs along the
top edge of the A8 post-regulator assembly.
• All green LEDs should be on.
• The fan should be audible.
In case of difficulty, refer to Chapter 5 , "Power Supply Troubleshooting."
Chapter 4 4-11