Agilent Technologies E1364A service manual Troubleshooting Techniques, Identifying the Problem

Troubleshooting Techniques

Identifying the Problem

To troubleshoot an E1364A Switch Module problem, you should first identify the problem and then isolate the cause to a replaceable part. See Chapter 3, "Replaceable Parts," or Appendix B, "Backdating Information," for descriptions and locations of replaceable parts, depending on the serial number of your switch module.

Table 4-1 lists some common problems, along with symptoms and possible solutions. If the problem persists, perform component-level troubleshooting using the component locator and schematics.

Table 4-1. Agilent E1364A Tests/Checks

Problem Type	Symptom	Possible Solutions
Operator Errors	Non-zero error code in response to	See Appendix C of the
	the SYST:ERR? command.	E1364A User’s Manual for Switch
		errors and causes.
		See Appendix B of the
		E1300A/E1301A or E1302A User’s
		Manual for additional
		information on operator errors.
Catastrophic	Switch not responding to commands.	Check logical address setting.
Failures		See "Testing the Assembly" in this
		chapter.
Performance	Switch failing Closed-channel	Check user wiring and test
Out of	Resistance Test (Test 2-1).	connections.
Specification
		Replace relays that correspond to
		the channels that are failing. For
		example, if channel 15 fails, replace
		relay K115.
		If most of the channels are near
		or above the test limit (3.5 Ω),
		replace the entire module (part
		number E1364-66201).
	Switch failing DC Isolation Test	Check user wiring and test
	(Test 2-2).	connections.
		Clean the printed circuit board.

44 Service Chapter 4