The following procedure allows you to determine whether the power supplies are working properly.
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Follow the disassembly procedure to disassemble the instrument. Be sure to disconnect all inputs to the instrument before beginning disassembly. |
The following measurements use the frame of the instrument as the low voltage reference. For the following measurements, the instrument should be turned on, and the light below the power switch should be green.
| Pin | Location Detail |
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C1103 pin 1 15 V ± 25% |
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For the following measurements, the instrument should be turned on, and the light below the power switch should be green.
Refer to the detailed images in the table below for exact location information.
| Pin | Location Detail |
|---|---|
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Low reference: chassis J1102 pin 21: 3.3 V ± 5% |
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Low reference: large metal shield R1020 (either side of component): 10 V ± 20% |
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Low reference: large metal shield E1006 (either side of component): 3.3 V ± 5% |
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Low reference: large metal shield U1006 (large tab on right side as shown in picture): 1.2 V ± 5% |
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Low reference: large metal shield U1004 pin 3: 5 V ± 5% |
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| Low reference: large metal shield U301: pin 2: +16.8 V ± 5% pin 3: -16.4 V ± 5% |
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