Agilent Technologies 8590L Service Manual page 221

Troubleshooting the Analyzer
Troubleshooting an Inoperative Analyzer
Figure 4-1 A16 Power Supply Test Point Location
3. Turn the analyzer
4. Locate the power supply test point using
5. Repeat
Table 4-2 Power Supply Tolerances
If the line fuse has blown
If the instrument was set up correctly, and the line fuse still blows,
suspect that the power supply is defective.
The A8 power supply assembly is a switching power-supply and does
CAUTION
not operate normally without a load on the dc power-supply outputs. Do
not attempt to operate the power supply out of the instrument. Damage
to the power supply may occur.
222
LINE
supply voltages as indicated in Table 4-2. Be sure the voltage
readings are within the limits shown in Table 4-2.
step 4 for each power supply listed in Table 4-2.
Power Supply
+5.1 V
+12.0 V
+15.0 V
−15.0 V
switch to ON.
Figure
Test Point
A16TP403
A16TP404
A16TP401
A16TP402
4-1. Check the
Specification
+5.0 to +5.25 Vdc
+11.1 to +12.8 Vdc
+14.7 to +15.25 Vdc
−14.7 to −15.25 Vdc
Chapter 4