Chapter 4 Troubleshooting and on-board repair MDC-2900 Series
4-16
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4.3.2.9 Antenna Scanner unit abnormality
When MENU > SYSTEM > BITE
> ANT MONITOR > is displayed,
are there any abnormal items?
IF PCB failure
Is the HIGH VOLTAGE abnormal?
Is the MAG CURRENT abnormal?
No
Yes
No
Yes
Is the MAG HEATER abnormal?
Is the TUNE VOLTAGE abnormal?
Yes
Yes
Yes
IF PCB failure
Go to
[4.3.2.11 High voltage abnormality]
in page 4-17
Magnetron or Modulator PCB
failure
No
No
No
Go to [4.3.2.13 Rotary abnormality]
in page 4-19
Yes
Is the RATE OF ROTATION
abnormal?