Check 12, Dc-Dc Converter Open Output Voltages; Dc-Dc Converter Output Connector; Dc-Dc Converter Open Output Voltages - Agilent Technologies 4339B Service Manual

Check 12, DC-DC Converter Open Output Voltages

1. Turn o the 4339B.
2. Disconnect the DC-DC Converter Output Cable shown in Figure 4-13 from connector \J12"
on the A1 Main Board Assembly.
3. Turn the 4339B on.
4. Using a multimeter, check if the DC-DC Converter open output voltages on the output
connector pins shown in Figure 4-13 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.
Figure 4-13. DC-DC Converter Output Connector
Table 4-2. DC-DC Converter Open Output Voltages
Pin (+) Pin ( ) Voltage Range
1
4
5
6
2 5.1 0.2 V
6
3 12 0.6 V
6
3 12 0.6 V
T roubleshooting 4-17