Marine Radio User Manual

2 - 2
SECTION 2 INSIDE VIEWS
•
LOGIC UNIT
•
RF UNIT
IF IC
(IC701: TA31136FN)
Crystal filter
(X1: CR-639 5.039MH)
AF power amplifier
(IC201: TA7368F)
AF volume
(IC202: M5222FP)
AF mute switch
(Q361: 2SJ364)
CPU
(IC1: M38267M8LGP)
BOTTOM VIEW
VCO circuit
1st mixer
(IC601: µPC2757T)
WFM RF
amplifier circuit
APC sensor drive amplifier
Q911: UN9215
(
Q913: XP6401
)
PLL IC
(IC801: µPD3140G)
Drive amplifier
(Q921: MRF9745)
Power amplifier
(Q922: 2SK3075)
TOP VIEW
BOTTOM VIEW
APC control
circuit