Agilent Technologies 6634B, 66332A Overall Troubleshooting, Flow Charts, Test Equipment Required

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	Recommended Model
GPIB Controller	To communicate with the supply via the	HP Series 300
	GPIB interface
Digital Voltmeter	To check various voltage levels	Agilent 3458A
Oscilloscope	To check waveforms and signal levels	Agilent 54504A/54111A
Electronic Load	To test operation of current circuit	Agilent 6060B
IC Test Clips	To access IC pins	AP Products No. LTC
Ammeter/Current	To measure output current	Guildline 9230/15
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 1-10. Several flow charts make reference to the test points listed in Chapter 6. The circuit locations of the test points are shown on the schematics and on the component location diagrams in Chapter 6.

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