If The Self-Test Fails To Run - HP 85106D Manual

Network analyzer system
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Table 6-3
If the Self-test Fails to
Run
The ACTIVE LED should always remain off until the HP 85105A is
accessed by the HP 8510. Each time the test set is turned on the Port 1 and
Port 2 LEDs will light for approximately 2 seconds during the self-test, and
then turn off. To determine what part of the self-test has failed, note which
LEDs on the A4 board are lit. Refer to Table 6-3 for failure indications.
Self-Test Failure Indications
Self-Test Indication
LSN
PWON
ON
Fail ROM Test
OFF
Pass ROM Test
OFF
Fail RAM Test
OFF
Pass RAM Test
OFF
If the portion of memory which contains the self-test programming is faulty,
the self-test will not run properly. The following conditions indicate that the
self-test ROMs are probably faulty.
all LEDs flash briefly and go off
all LEDs flash briefly and stay on
ACTIVE LED goes on too soon
HP 85105A mm-Wave Controller
A4 HP-IB LED's
Time (after turn-on)
TLK
SRQ
REM
ON
ON
ON
0 to 0.5 sec
ON
ON
ON
ON briefly
OFFF
ON
ON
0.5 to 2.0 sec
OFF
OFF
ON
OFF
OFF
OFF
after 2 sec
HP 85106D mm-Wave System 6-27
Self-Test Indicators

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