Check 10, Dc-Dc Converter Input Voltage - Agilent Technologies 4349B Service Manual

Check 10, DC-DC Converter Input Voltage

1. Turn on the 4349B.
2. Using a multimeter, check if the voltage between TP12 and TP15 on A1 (DC-DC Converter
input voltage) is between 12 V and 15 Vdc. Refer to Figure 4-11 for test pin locations.
3. If the voltage is in range, proceed to the \Check 11, DC-DC Converter Open Output
Voltages", otherwise proceed to the \Check 12, Transformer Secondary Voltage".
Figure 4-11. Test Pin Locations
T roubleshooting 4-15