Check 11, Dc-Dc Converter Open Output Voltages - Agilent Technologies 4338B Service Manual

Check 11, DC-DC Converter Open Output Voltages

1. Turn o the 4338B.
2. Disconnect the DC-DC Converter Output Cable shown in Figure 4-14 from connector \J504"
on the A1 Main Board Assembly.
3. Turn the 4338B on.
4. Using the multimeter, check if the DC-DC Converter open output voltages on the output
connector pins shown in Figure 4-14 are in the ranges shown in Table 4-2.
5. If passed, replace the A1 Main Board Assembly, otherwise replace the DC-DC Converter
Assembly.
4-18 T roubleshooting
6
1 2 5.1
6
4 3 12
6
5 3 12
0.1 V
0.6 V
0.6 V