Inside View (Main Unit); Inside Top View (Rf And If Units) - Icom IC-R7000 Service Manual

2·4 INSIDE VIEW
(MAIN UNln
Converter for 1240-1300MHz - - - - - - - - .
AF Amp (µPC1241 H I C 8 ) - - - - - - - - - - - - - - '
2·5 INSIDE TOP VIEW
(RF AND IF UNITS)
BPF and RF Amp C i r c u i t s - - - - - - - - - - - - ,
20dB Attenuator C i r c u i t - - - - - - - - - ,
RF U N I T - - - - - - - - + - - -
IF U N I T - - - - - - - - - + - - - - - 1
. - - - - - - - - - - - F M Center Meter and VSC Control Circuits
2-3
. - - - - - - - - - - - - - - - - V S C Amp (NJM4558D IC1)
r - - - - - - -
Signal Center Frequency Detector Circuit
' - - - - - - - - R e l a y for Recording Remote Function
' - - - - - - - - - - - v o l t a g e Regulator (NJM7809A IC6)
' - - - - - - - - - - - - - - N o i s e Squelch Control Circuit
. - - - - - - - - - - - - - - - - - - - L O TRAP UNIT
. - - - - - - - - - - 1 s t LO AMP AND MIXER UNIT
f------,f------1 st IF Amp Circuit
----'-----512-1000MHz IF Filter
---+------25-512MHz IF Filter
---+---2nd LO AMP AND MIXER UNIT
---+-----10.7MHz Crystal Filter
- - - - ' - - - - - N o i s e Blanker Circuit
- - - - ' - - - - - 455kHz 3rd IF Filter
---~3rd
LO Amp and Mixer Circuits
_ __..___,_JB (AM Filter Selector Connector)
NARROW 6kHz
WIDE 15kHz
J B R NARROW
§WIDE