Agilent Technologies 8935 Series, Руководство пользователя

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Chapter 3 51
Troubleshooting
Self-Test Diagnostics (Step 1)
To Start Troubleshooting
1. Turn on the Test Set to automatically run the self test diagnostics.
• If the Test Set does not power up, see “If the Test Set Fails to
Power-up” on page 52 .
• If all self-test diagnostics pass, and the front-panel keys and knob
work, you can assume that the digital control assemblies work.
2. After power-up, the top line of the Test Set’s display should show
copyright information and the firmware revision code. The second
line should display
All self tests passed
.
• If the Test Set powers-up with
“One or more self-tests
failed. Error code:<hexadecimal error code>:”
, see
“Reading Front Panel or GPIB Codes” on page 54 .
• See “Frequently Encountered Diagnostic Messages” on page 73 .
for other error messages that might appear on the second line of
the display.
3. The CDMA ANALYZER screen should be displayed. Two conditions
cause a different screen to be displayed on power-up:
❏
A SAVE/RECALL register named POWERON was saved to
automatically power-up the Test Set in a different state. Press the
Preset
key before proceeding; this will restore the Test Set to the
factory power-up condition.
❏
The
Autostart Test Procedure on Power-Up:
field (of the
“TESTS [Execution Conditions]” screen) is set to
On
to
automatically run a loaded program. Press the
Shift
key, then
press the
Cancel
key to stop the program. Press the
Preset
key to
restore the Test Set to the factory power-up condition.
To turn the autostart function off, press the
Menu
key, then select
Execution Cond
(under the
SET UP TEST SET:
heading). The
autostart function is at the bottom of the screen; turn it
Off
.