Agilent Technologies 8753ES Option 011 Service Manual page 196

Power Supply Troubleshooting
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Measure the Post Regulator Voltages
Measure the DC voltages on the test points of A8 with a voltmeter. Refer to
test point locations and
Figure 5-3 A8 Post Regulator Test Point Locations
Table 5-1. A8 Post Regulator Test Point Voltages
TP Supply
1 +65 V (not used)
2 AGND
3 +5 VD
4 SDIS
−15 V
5
−12.6 VPP (probe power)
6
7 +15 V
8 +5 VU
−5.2 V
9
10 +22 V
11 +6 V
5-6
Table 5-3 for supply voltages and limits.
Range
+64.6 to +65.4
n/a
+4.9 to +5.3
n/a
−14.4 to −15.6
−12.1 to −12.91
+14.5 to +15.5
+5.05 to +5.35
−5.0 to −5.4
+21.3 to +22.7
+5.8 to +6.2
Figure 5-3 for
Chapter 5