405
RBW
10K
406
RBW
1OK
407
RBW
10K
408
RBW
10K
409
RBW
10K
410
RBW
1OK
411
RBW
10K
412
RBW
10K
413
RBW
10K
414
RBW
10K
415
RBW
1OK
416
RBW
10K
417
RBW
3K
418
RBW
3K
419
RBW
3K
420
RBW 3K
421
RBW
10K
422
RBW
1OK
423
RBW
1OK
424
RBW
10K
3. If ERR 581 or ERR 582 appears, the fault is most likely caused by
the Cal Oscillator. Refer to errors 581 and 582.
4. If ERR 581 or ERR 582 does not appear, troubleshoot the A5 IF
assembly.
Multiple IF Errors During IF adjust: If a FULL IF ADJ sequence
(pressing
ICAL)
and FULL IF ADJ
)
results in IF errors while displaying
IF ADJUST STATUS: AMPLITUDE,
A4 Cal Oscillator might not be
providing the correct output signal. Perform the following steps:
1. Disconnect W30 (white) from
A5J4.
2. Connect W30 to the input of a second spectrum analyzer and set
its controls as follows:
Center Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . 10.7 MHz
Reference Level . . . . . . . . . . . . . . . . . . . . . . . . . . . -30
dBm
3. Observe the spectrum analyzer display while pressing FULL IF ADJ
on the spectrum analyzer. If a -35
dBm
signal does not appear,
troubleshoot the A4 Cal Oscillator.
4. If a -35
dBm
signal does appear, troubleshoot the A5 IF assembly.
Unable to adjust 10 kHz Resolution Bandwidth in first XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in second XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in third XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in Fourth XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in first XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in second XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in third XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in Fourth XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in first XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in second XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in third XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in Fourth XTAL pole.
Unable to adjust 3 kHz Resolution Bandwidth in first XTAL pole.
Unable to adjust 3 kHz Resolution Bandwidth in second XTAL pole.
Unable to adjust 3 kHz Resolution Bandwidth in third XTAL pole.
Unable to adjust 3 kHz Resolution Bandwidth in Fourth XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in first XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in second XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in third XTAL pole.
Unable to adjust 10 kHz Resolution Bandwidth in Fourth XTAL pole.
General Troubleshooting 6-23
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