Test Equipment Required; Overall Troubleshooting; Flow Charts - Agilent Technologies 6611C Service Manual

3 - Troubleshooting

Test Equipment Required

Table 3-1 lists the test equipment required to troubleshoot the power supply. Recommended models are
listed.
Table 3-1. Test Equipment Required for Troubleshooting
Type Purpose
GPIB Controller To communicate with the supply via the
GPIB interface
Digital Voltmeter To check various voltage levels
Oscilloscope To check waveforms and signal levels
Electronic Load To test operation of current circuit
Ammeter/Current To measure output current
Shunt

Overall Troubleshooting

Overall troubleshooting procedures for the power supply are given in the Figure 3-1. The procedures first
check that neither an AC input, nor a bias supply failure is causing the problem and that the supply passes
the turn-on self test (error annunciator stays off). The normal turn-on, self-test indications are described in
the "Checkout Procedure" in Chapter 3 of the User's Guide.
If the supply passes the self test and there are no obvious faults, you should perform the verification
procedures in Chapter 2 from the front panel to determine if any functions are not calibrated or are not
operating properly. Then program and read back a voltage via the GPIB to see if the supply responds
properly to bus commands. If the supply fails any of the tests, you will be directed to the applicable flow
chart or troubleshooting procedure.

Flow Charts

Troubleshooting flow charts are given in Figure 3-1 sheets 1-4. The flow charts make reference to the test
points listed in Chapter 6. The circuit locations of the test points are shown on the component location
diagrams in Chapter 6.
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Recommended Model
HP Series 200/300
Agilent 3458A
Agilent 54504A/54111A
Agilent 6060B (60V) or 6063B
(240V)
Guildline 9230/15