Chapter 5 Troubleshooting and on board repair
MDC-5200/5500 Series
5-26
0092655002-03
No transmission
Magnetron failure
Failure of wiring in
Antenna unit, or failure of
Display unit power
Modulator PCB failure
Check connecting cable
between Display unit and
Antenna unit.
Modulator PCB failure
Yes
No
Is +6.3 V applied to a
magnetron heater?
No
Yes
Is transmitter TXHV fuse
blown?
No
Yes
Is +250 V at J1-1pin of
modulator PCB normal?
No
Yes
Is there any abnormal
sound from pulse
transformer?
Yes
RF module (RFM-100) failure
No manual tuning
Is +24V at J1-1 pin of RF
module normal?
Failure of wiring in Antenna
unit, or failure of Display unit
power
No
Содержание MDC-5204
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Страница 175: ...0092655002 03 A 1 INTER CONNECTION DIAGRAM RB806 ...
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Страница 179: ...0092655002 03 A 5 INTER CONNECTION DIAGRAM MRD 109 MRO 108 ...
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