Sony CRF-230B Service Manual page 44

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POWER CIRCUIT BOARD (P6)
Position Switch Function Position
FM2 $701 POWER OFF
FM
,
ext power
ON $702 ext power/battery (built in connectoz)
ON
OFF
OFF $703 LIGHT (ON with ac power source)
OFF = ; ae
es LIGHT
built in band selector
ON S710 BATTERY CHECK ON
BROAD $801 BFO A ON
SENSITIVI
OFF S901 (LOCAL/DX) pS
OFF $902 ROD ANT/EXT ANT ROD ANT