Agilent Technologies 5962-8200 service manual Troubleshooting

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Troubleshooting

Introduction

WARNING:	SHOCK HAZARD. Most of the troubleshooting procedures given in this chapter are
	performed with power applied and protective covers removed. Such maintenance should
	be performed only by service trained personnel who are aware of the hazards (for
	example, fire and electrical shock).

CAUTION: This instrument uses components which can either be damaged or suffer serious performance degradation as a result of ESD (electrostatic discharge). Observe the standard antistatic precautions to avoid damage to the components. An ESD summary is given in Chapter 1.

This chapter provides troubleshooting and repair information for the dc power supply. Before attempting to troubleshoot the supply, first check that the problem is with the supply itself and not with an associated circuit. The verification tests in Chapter 2 enable you to isolate a problem to the dc power supply. Troubleshooting procedures are provided to isolate a problem to one of the circuit boards. Figure 3-2 shows the location of the circuit boards and other major components of the unit. Disassembly procedures are provided at the end of this chapter and should be referred to, as required, in order to gain access to and/or replace defective components.

If an assembly is defective, replace it and then conduct the verification test given in Chapter 2.

NOTE: Note that when either the A1 Control Board or the A2 Interface Board are replaced, the supply must be calibrated (See "Post Repair Calibration" later in this chapter). If the A2 Interface Board is replaced, the supply must be initialized before it is calibrated. See "Initialization" later in this chapter.

Chapter 5 lists all of the replaceable parts for the power supply. Chapter 6 contains block diagrams, test point measurements, and component location diagrams to aid you in troubleshooting the supply.

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