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3-20
OPERATING THE TESTER
The following examples show the difference between information provided when Shorts
Locator is on and when it is off.
Shorts Locator On
Shorts Locator Off
Troubleshooting for
Operators
The most common tester problems and their solutions are listed below. Contact your
supervisor when a new or persistent problem occurs.
Tester Power
Problem:
The tester has no power.
Solution:
•
Turn the Power Control switch off and on.
For the Z1890, Z1884, Z1880, Z1866, Z1860-NB MS, Z1860, Z1850, Z1840, Z1808,
and Z1805: the Power Control switch is on the operator control panel.
For the Z1820 and Z1800: the Power Control switch is on the test jack panel.
For the Z1860, Z1850, and Z1840M: the Power Control switch is on the operator
control pod.
•
If the AC power cord is not connected to the tester, turn off the main breaker located on
the rear panel, then connect the power cord to the tester.
•
Check that the main AC breaker is on after the tester is connected to the AC power
source.
Inconsistent Board
Failures
Problem:
Inconsistent board failures occur after running the test on the same board three
times. Test failures are different on consecutive tests.
Solution:
The fixture probes are sticking, contaminated, or broken. Use the fixture clear
plate to examine them. Clean the probes with compressed air or remove the fixture for
repair. See the Z1800-Series Fixturing Guidebook for fixture maintenance information.
Failing Batches of
Boards
Problem
:
An entire batch of boards fails the test.
Solution:
Look for the obvious, such as damaged or missing components on the boards;
then, tag the boards for rework.
SC
(3-19)
Shorted to: 7,23,26,33
NODE 3 CONT
C114-.1U (e)
C115-.01 (e)
C118-.01 (e)
C122-5U (e)
NODE 19 CONT
NODE 7 CONT
SC
L1-8.2UH (e)
C122-5U (f)
CR66-1N4 (Anode)
NODE 23 CONT
SC
NODE 26 CONT
SC
L1-8.2UH (f)
NODE 33 CONT
SC
(3-19)
Shorted to: 7,23,26,33
Test Terminated, Interconnect problem
Test COMPLETED - FAILED!
Содержание Z1800 Series
Страница 5: ......
Страница 9: ...IV...
Страница 11: ...VI...
Страница 93: ...2 40 TESTER DESCRIPTION...
Страница 115: ...3 22 OPERATING THE TESTER...