Maintenance
Figure 6: AC power supply troubleshooting procedure
NOTE.
The test point voltages are printed on the Main board. From left to right in
the illustration, they are: +1.225 V, -1.2 V, -2.5 V, +1.5 V, -5 V, +12 V, +1.8 V,
+5 VA, +5 VSB, and +2.5 V, +3.3 V, +5 V.
MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual
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