MDC-5200/5500 Series
Chapter 5 Troubleshooting and on board repair
0092655002-03
5-19
No transmission
Magnetron failure
Failure of wiring in
Antenna unit, or failure of
Display unit power
SCAN PCB failure
Check connecting cable
between Display unit and
Antenna unit.
SCAN PCB failure
Yes
No
Is +6.3 V applied to a
magnetron heater?
No
Yes
Is transmitter high
voltage fuse blown?
No
Yes
Is +250 V at X11-1 pin of
SCAN PCB normal?
No
Yes
Is there any abnormal
sound from pulse
transformer?
Yes
MIC module failure
SCAN PCB failure
No manual tuning
Is +24V at X12-1 pin of
SCAN PCB normal?
Failure of wiring in Antenna
unit, or failure of Display unit
power
Is +5V at X13-4 pin of
SCAN PCB normal?
No
No
Yes
Summary of Contents for MDC-5204
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Page 175: ...0092655002 03 A 1 INTER CONNECTION DIAGRAM RB806 ...
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Page 178: ...A 4 0092655002 03 INTER CONNECTION DIAGRAM RB809 ...
Page 179: ...0092655002 03 A 5 INTER CONNECTION DIAGRAM MRD 109 MRO 108 ...
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