Logic Unit; Rf Unit; Block Diagram - Icom IC-R2 Service Manual

SECTION 10

BLOCK DIAGRAM

RF UNIT

0.495-1.8995MHz
D68: 1SV172
LIM LPF
D63: MA2S077
D65: MA2S077
D66: MA2S077
Q505: 2SC4215
D69: MA2S077
BANDSW
ATT BANDSW BPF
1.9-14.995MHz
D64: MA2S077
0.495-29.995MHz
D67: MA2S077
D70: MA2S077
ANT
LPF HPF
SW
15-29.995MHz
D13: 1SV308
D73: 1SV308
D75: 1SV308
118-175MHz
118-174.995MHz
RF
BANDSW LPF BPF
AMP
D3: 1SV308
D1: HVU350
Q14: FH102
D11: 1SV308
D2: HVU350
D74: 1SV308
330-470MHz
330-469.995MHz
RF
BPF BPF
AMP
D4: HVU350
Q35: UPA805T
D5: HVU350
470-832.995MHz
D32: 1SV308
Q24: 2SC5277
D34: 1SV308
RF
BPF BANDSW
AMP
Q36: 2SC5231
30-117.995MHz
175-329.995MHz
RF
LPF
AMP
Q26: 2SC5277
833-1309.995MHz
RF
BPF
AMP
+3V
+3S
R3V
VP
BATT
Q509: DTA144EE
Q506: DTA144EE
HF3V
RXBAND
B1_3V
RXBAND SW
B1
SW
RF
AMP
B2_3V B2
RXBAND
B3_3V B3
SW
Q504: XP1113
T
R
A
C
D42: MA2S077
D43: MA2S077
BANDSW D44: MA2S077
0.495-282.995MHz
D52: 1SV308
D25: 1SV308
RXLOSW PASS D50: 1SV308
D29: 1SV308
D47: 1SV308
D72: 1SV308
RXLOSW
283.00-
SHIFT 494.195MHz
833.000-
1066.695MHz
x2
Q33: XP1113
Q31a: FH102
+3S
LOSW
CONT
IC10:
UPC2757T
x2
D36: 1SV308
D58: MA2S077
BANDSW
D71: 1SV308
D59: MA2S077
Q31b: FH102
1066.700-1309.995MHz
494.200-832.995MHz
RF
BPF
AMP
IC1: UPC2757T
FI1: EFCH266MKQP1
IC11: UPC2746T
266.7MHz

LOGIC UNIT

Q6: 2SA1588
+3V POWERC
CONT
+3SC
+3S
CONT
Q3: 2SA1588
Q39: XP6501
R3V RX
IC4: S-81332HG
IC3: XC62FP3002MR
CONT
+3.2
Q4: 2SA1588
REG
RIPPLE
X4 DC-DC
FIL
D3: 1SS372
Q26: 2SC4081 IC10: X6371A351PR
D15: 1SS372
D4: MA729
D5: 1SS372
10 - 1
Q501: DTA144EE
HFC
300M3V 300MC
RXBAND
SW
Q502: XP1113
UHF3V UHFC
RXBAND
VHF3V VHFC
SW
1stVCO
267.1950-549.8475MHz
Q503: XP1113
Q28: 2SC5006
G3V GC
Q30: 2SC5006
RXBAND
800M3V 380MC D54: 1SV286
SW
IC4: UPC2746T
Q40: 2SC5231 1stVCO
SHIFT
BUFF BUFF
SW
Q29: DTC144EE
Q43: 2SC5231
X1: CR593
19.200 MHz
AMP
D18: HVU350
LOOP
PLL FIL
LOOP IC
FIL Q2: 2SK880
Q45: 2SC4117
IC3: UPD3140GS
2nd
PDAUL,PCK_IS,PSTB
VCO
R3V
RIPPLE
FIL
Q6: FH102
D17: 1SV305 Q37: 2SC4617
D53: MA2S111
D57: MA728
D20: MA6S718
D21: MA6S718
LFP
Q46: XP4312
FI3: FL-293 Q44: XP4312
D60: MA2S077 Q4: XP6501
Q1: XP6501
D61: MA2S077
BPF LPF
RX
RX
AM
SW SW
DET
D16: MA132WK
IC2: TA31136FN
Q18: DTA144EE
IF IC
D55:
IF
MA132WK
AMP
DEFIL
Q5: D56: MA132WK
2SC5231
CERAMIC
BPF
FI2:
CFWM450E
WFMS
SDET
NOISE
DET
IC1: HD74LVOO
Q35: 2SA1588
W
F
M
R
B
E
A
S
T
E
T
T
+3
RESET
REG
IC5: S-80725SL
D14: MA2S111
Q13: DTC114EE
BATT
CHECK
SHIFT
AFON
AFREG
Q23: 2SA1588
Q41: 2SC4617
IC14: M5222FP
VR IC
V
R
C
AM
D17: MA2S111 Q31: 2SC4081 Q37: 2SJ144
PRE
AMFMSW BPF WNSW MUTE
AMP
Q30: XP6501
AMUTE
WFM
Q17: 2SJ144
WFIL WSW
RX
RTONE
TONE
IC9: NJM2904V
FIL
Q8: DTA144EE
LIGHT
SQL
X1: CR613
TCON
CPU
CLSW
Q11b: XP4213
D1: MA2S111
E
X
T
EEPROM
D6: MA2S111
IC2: X25650S8I-2.5
Q40: 2SA1588 D7: MA2S111
D8: MA2S111
D9: MA2S111
D10: MA2S111
D12: MA2S111
D13: MA2S111
Q11a: XP4213
COMMON
DATA
RX
IC15: TA31056F
Q36: 2SC4081
Q24: 2SA1588
AF
BUFF
AMP
DS8: DLC-7995
LCD
Q38a:
2SC4081
DS2: CL-200YG-C-TS
LIGHT LIGHT
SWITCH LED
4.935MHz
7 KEY
IC11: M38267M8L
INITIAL
MATRIX