Keysight VXI Bus 75000 C Series, Руководство по обслуживанию

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56 Keysight E1463A 32-Channel Form C Switch Service Guide
Service Troubleshooting
Troubleshooting
To troubleshoot a switch module problem you must first identify the problem and
then isolate the cause of the problem to a replaceable part. See Chapter 3,
"Replaceable Parts," and the component locators at the back of this manual for
descriptions and locations of Keysight E1463A replaceable parts.
Identifying the Problem
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 4-6
Keysight E1463A Common Problems
Problem
Type Symptom Possible
Solutions
Self-test Errors Non-zero error code in response to the
*TST? command. See Table 4-4 for information on self-test errors.
Operator Errors Non-zero error code in response to the
SYST:ERR? command. See Appendix C of the the Keysight E1463A User’s
Manual for Switch Module errors and causes.
See Appendix B of the Keysight E1405 User’s Manual
for additional information on operator errors.
Catastrophic
Failures Not responding to commands. Check logical address setting.
Check GPIB cables and connections. See "Testing the
Assembly" in this chapter.
Performance Out of
Specification Failing Closed Channel Resistance
Test (see Test 2-1 in Chapter 2).
Failing DC Isolation test (See Test
2-2 in Chapter 2)
Check user wiring, test connections, and installed
protection devices.
Replace relays that correspond to the channels that are
failing (see Table
4-3).
If most of the channels are near or above the test limit
(2.0 Ohms), replace entire printed circuit board
(Keysight part number E1463-66501)
Check user wiring, test connections, and installed
protection devices.
Remove dust from relay module and terminal module
printed circuit board.