Icom IC-R6 Service Manual page 29

SECTION 9. BLOCK DIAGRAM
ANT CONNECTOR
J1(CHASSIS)
BAR
ANTENNA
0.10-1.895 MHz
ATT
ANT
ATT
+2S TUNE
Q521:LDTA144 D100:SVC389
D68:1SV172
ANTSW
0.10-1.895 MHz
ANT
EARPHONE ANTSW
LPF
SW
ANT SW
Q514:UMD6 D76:MA2S077
D101:HVD144
Q510:UMD6
D109:HVD144
0.10-29.995 MHz 1.9-14.995 MHz
BAND BAND
LPF BPF
SW SW
D 66:MA2S077
D73:HVD144
D 65:MA2S077
D75:HVD144
D 63:MA2S077
D13:HVD144
D 31:MA3S132
15-29.995 MHz
HPF
VHF2V
118-174.995 MHz
RF
BPF
AM P
Q14:2SC5008
UHF2V
330-469.995 MHz
BAND RF
BPF
SW AM P
D3:HVD144 Q35:2SC5008
D11:HVD144
D74:HVD144
800M2V
470-832.995 MHz
RF
BPF
AM P
Q24:2SC5277
300M2V
30-117.995 MHz
175-329.995 MHz
RF
BPF
AM P
Q36:2SC5231
G2V
833-1309.995 MHz
RF
BPF
AM P
Q26:2SC5277
9 - 1
RF UNIT
VP
LEVEL
CONV
TRAC
Q513:XP4601
D 54:MA2S111
BAND RF
SW AM P
Q505:2SC4215
D64:MA2S077
Q 527:2SA1832
D70:MA2S077
D67:MA2S077
D2:HVU350B
D1:HVU350B
BPF
TRAC
D5:HVU350B
D4:HVU350B
LO
BPF
SW
D 42:MA2S077
D 43:MA2S077
TRAC D 44:MA2S077
BAND
X2
SW
D25:HVD144 Q31:FH102
D29:HVD144
D32:HVD144
D34:HVD144
D72:HVD144
LO
1st Lo SW
266.8 MHz
to D52:HVD144
1099.695 MHz D50:HVD144
D47:HVD144
+3S +3S
FI1:EFCH266
RF
BAND
AM P
SW
D71:HVD144 IC18:UPC2746 IC1:UPC2757
1st IF:266.7 MHz
D36:HVD144
Q506:LDTA144
+3S
RX RX
SW 300M2V SW
B1C
Q501:UNR9114
B2C
UHF2V
RX RX
SW B3C SW
VHF2V
Q504:XP1113 Q502:XP1114
G2V
RX
SW
800M2V
Q503:XP1114
Q 526:LDTC144
+3S D106:MA2S077
SHIFT SHIFT
SW
BUFF
+3V
+3S
Q525:2SC5006
+3S
LOOP
Q528:2SC5108
Q529:2SC5006
BUFF
D105:1SV286
Q 43:2SC5006
+3V
I C3:MB15F63
LOOP PLL
FIL IC
+3S
D17:1SV305
Q6:FH102
X1:CR-900
19.200 MHz
RIPPLE
X2
FIL
Q37:2SC4738
Q31:FH102
2nd Lo
LPF
FM,AM : 247.050 MHz/286.350 MHz
WFM : 246.750 MHz/286.650 MHz
+2S D 59:MA2S077 D 61:MA2S077
D 58:MA2S077 FI3:FL-293 D 60:MA2S077
XTAL
MODE MODE
BPF
BPF
SW SW
Q523:2SC5006
2nd IF:19.650 MHz
BPF
19.950 MHz
+2S
300MC
300MC VHFC
UHFC
LOGIC3.3V
800MC
UHFC GC
VHFC I OEN
I/O
WFM IOSTB,IOCK,IODATA,IOEN
AM
GC I C17:BU2092
I C19:TC7S04
800MC
Q45:2SC4117
Q2:2SK880
FIL
3rd Lo:19.2 MHz
FSET
IFV
Q518:2SC4738
AGC
AMP
IFV
AGC
IF
IF IC
AM P
Q5:2SC5006
IC12:NJM2552
DISCRI M ODE WFM
SW
X2:JTBM450CX24 Q41:LDTC144
Q516:XP1113
D 55:MA3S132
MODE
SW
CERAMIC
BPF
FI2:LTM450
MODE
SW
3rd IF
FM,AM : 0.450 MHz
D 56:MA3S132
WFM : 0.750 MHz
AF line DET
SW
I C14:TC7W53
RSSI
+3S
SQL NOISE
AMP
I C13:LMV321