Realistic PRO-2022 - Reception Check; Reception Check Flowchart

RECEPTION CHECK
POWER ON
NO
NO
NO
I YES
Is Power Supply circuit OK?
I
Is Voltage regulator (1C4)
OK?
Is IC7 clock oscillation
waveform or reset OK?
END
IYES
Is IC7 OK?
Is Key board and/or
associated OK?
Is IF Amp or Noise Amp
circuit
(IC1) OK?
Is CPU control circuit OK?
Is Oe-OC converter (which
consists ol
Q34, 35) OK?
NO
NO
IYES
Is the backup battery OK? Is the band selection
(which consists of
026-29)
OK?
Is CPU control circuit
(which consists ol
023 .
041) OK?
Is
memory power supply
circuit (which consists ol
1C4, 036) OK?
Is PLL circuit (which
consists
011C7. ICS. 08)
OK?
Is VCO circuit (which
consists ol
06, 9 and 15)
OK?
Is IC1 and/or associated
circuit OK?
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