Agilent Technologies PSG Series Service Manual page 20

Checking the A18 CPU Voltages
1. With the external and internal covers removed and the signal generator on its side, turn power on and
check to see if all the power supply LEDs on the A31 Motherboard are on. If any of the power supply LEDs
are not on, refer to "Power Supplies" on page 1-17
2. If all the power supply LEDs on the motherboard are on, check the A18 CPU and A31 Motherboard
connector pins for the voltages listed in Table1-3.
Table 1-3
P223-2, 22
P223-3
P223-4
P223-21
P223-23
P223-37
P223-39
P223-40
3. If any main power supply voltage problems are detected, refer to
4. If all power supply voltages are good, replace A18 CPU.
Connector
+5 VA
-15 V_In
+32 V_In
+15 V_Standby
+15 V_In
-7 Vdc
+10 Vdc
+8 Vdc
to troubleshoot.
Supply Voltage
"Power Supplies" on page
Troubleshooting
Getting Started with Troubleshooting
Acceptable Range
+5.2 0.16 Vdc
-15 0.45 Vdc
+32 0.96 Vdc
+14.85 0.6 Vdc
+15 0.75 Vdc
-7.0 0.14 Vdc
+10.2 0.2 Vdc
+7.95 0.21 Vdc
1-17.
1-7