Icom IC-R3 Service Manual

11 - 1
SECTION 11 BLOCK DIAGRAM
SHIFT
PDAUL, PCK_IS, PSTB
SHIFT
Q31: 2SK880 Y
Q32: 2SC4117 GR
Q21: DTC144EE
D61: MA2S077
1st VCO
IC4: µPC2746T
D62: 1SV286
Q22: 2SC5006
Q23: 2SC5006
IC3: µPD3140GS
Q25: 2SC5231 C8
D913: 1SV305
Q861: 2SC5006
1stLO
Q863:
2SC5195
IC14:
µPC2749TB
IC13:
µPC2758T
D911: 1SV308
D912:
MA2S077
LIM
ATT
HPF
RF
AMP
RF
AMP
RF
AMP
RF
AMP
AMP
LPF
LOOP
FIL
AMP
LO
AMP
RF
AMP
BUFF
BUFF
LOOP
FIL
PLL
IC
RF
AMP
RF
AMP
RF
AMP
BUFF
BUFF
BUFF
BUFF
BUFF
RF
AMP
RF
AMP
RF
AMP
IF
AMP
IF
AMP
IF
AMP
AMP
AMP
AMP
RF
AMP
RF
AMP
RF
AMP
RF
AMP
RF
AMP
+3
REG
D1: 1SV252
D909: 1SV308
D12: 1SV308
D13: 1SV308
D2: 1SV308
D3: 1SV308
0.495–1.9 MHz
1.9–15 MHz
D4: MA2S077
D5: MA2S077
D7: MA2S077
D8: MA2S077
30–65 MHz
65–108 MHz
D403: MA2S077
D401: 1SV288
D10: 1SV308
Q3: 2SC4215
D402: 1SV288
D404: MA2S077
RF-B UNIT
Q874:
2SC5195
CONLO
D64: MA2S077
D67: MA2S077
LOOP
FIL
PLL IC
IC15:
TB31242FN
Q862:
2SC5195
Q864:
2SC5195
D63: MA2S077
D65: MA2S077
REF
D121:
MA2S077
Q34: UPA804T
D202: 1SV286
Q853: 2SC5231 C8
2ndLO
LV3
LV3
RIPPLE
FIL
R3V
Q33: 2SC4617 S
D201: MA2S111
VXO
Q870: 2SK880 Y
Q871: 2SC4117 GR
VCO UNIT
D41: HVU350
X1: CR-674
AM
VRC
AFON
IC14: M5222FP
VR IC
AFREG
Q36: 2SC4081 SIC15: TA31056F
Q44: 2SA1588 GR
Q23: 2SB1132 R
Q41: XP1501 AB
D16: MA132WK
Q18: DTA144EE
D76:
MA132WK
AM DET
Q44: XP6501 AB
Q45: XP6501 AB
Q121: 2SC4215
AMAF
D71:
MA2S077
D66: MA2S077
D75:
MA132WK
FI2:
CFW450E
IF IC
IC2: TA31136FN
D73:
MA2S077
D122:
MA2S077
FI3:
FL-319
D502: 1SV288
D504: MA2S077
D602: 1SV286
D604: MA2S077
D704: MA2S077
D702: 1SV286
RFO
D68: MA2S077
108–174 MHz
174–225 MHz
D503: MA2S077
D603: MA2S077
Q501: 3SK293
Q601: 3SK293
D501: 1SV288
D601: 1SV286
RFI
D6: MA2S077
RF UNIT
D11: 1SV308
D805: 1SV308
D21: 1SV308
600–800 MHz
470–600 MHz
330–470 MHz
BPF BPF
BPF
BPF
BPF
BPF
BPF
BPF
ATT
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
BPF
Q7: UPA805T
D803: MA2S077
Q801: 3SK293D801: 1SV286
D22: 1SV286
D23: 1SV286
D24: MA2S077
D802: 1SV286
D37: 1SV308
IC1:
µPC2757T
IC10:
µPC2757T E3
D901:
MA2S077
D72:
MA2S077
FI4:
SFECV13.25MAS
Q41: 2SC4215 O
FI901:
TSB2121D
IF IC
IF IC
IC901:
M52342FP
D74:
MA2S077
Q857:
2SC4403 3
A/V OUT
Q856: 2SC4081 S
FI905:
TPSCC4.5MB
D914: MA132WK
FMAF
J3
DEFIL
AMFM
SW
WN SW
WSWWFIL
D17:
MA2S111
Q30:
XP6501 AB
Q31:
2SC4081 S
Q17:
2SJ144 Y
TONE
FIL
WFM
MUTE
TCON
Q37:
2SJ144 Y
RTONE
TFT
LCD
TFT
LIGHT
15V
IC9: NJM2904V
Q8: DTA144EE
TFT
DRIVER
OSD
TFT
BACK LIGHT
DRIVER
IC901:
LV4127W
X901: CR-679
(NTSC) 3.579545 MHz
(PAL) 4.433619 MHz
DS4: ALP210CXX10
DS5: 3AE4T4KL2008Y
IC902: M35017
Q855: 2SC4081 S
VIDEO
SELECT
Q71: 2SC4081 S
VIDEO
Q903: 2SA1576 S
Q904: 2SC4081 S
FI902:
SFSCC4.5MC2
Q854:
2SC4081 S
Q51: 2SC4215 O
D51: 1SV288
D52: 1SV288
TRAC
IC22: NJM2246MIC21: UPC1663GV
D41: MA2S077
D902:
MA2S077
FI904:
LFSC25N11B0240B
FI1:
LFSC25N12B0426B
IC1: µPC1688
FM-TV
DET
IC2: AN8945SB
Q21: 2SC4081 S
Q41: 2SC4215 O
SIF OUT
FM-TV UNIT
D1:
MA2S077
D852: 1SV286
D35: 1SV308
D36: 1SV308
800–1150 MHz
225–330 MHz
D853: MA2S077
D851: 1SV286
Q9: 2SC5231 C8
D33: 1SV308
+3V
DC-DC
LOGIC UNIT
IC10: X6371A351PR
D4: MA729
DC-DC
REG
Q303: 2SB1132 R
Q304: 2SC4617 Q
+3V
CONT
IC3: XC62FP3002MR
Q6: 2SA1362 GR
Q39: XP1501 AB
POWERC
VCC
RESET
RESET
IC11:
M38267M8L-256GP
IC5: S-80925ALMP
CPU
EEPROM
IC2: AK93C10A
Q40: DTA144EE
IC903: TC7S02FU
Q801: 2SK2493
Q802: UMY1N
Q820: 2SB1201 S
Q821: 2SC4081 S
D820: MA2S111
T2: TO-51
DC-DC
4.5V
5V
12V
VCC
IC801: MB3776APFV
Q804: 2SK2493
T1: TO-47
INITIAL
MATRIX
LIGHT
SWITCH
LIGHT
LED
D6: MA2S111
D7: MA2S111
D8: MA2S111
D9: MA2S111
D10: MA2S111
D11: MA2S111
D13: MA2S111
DS2: CL-200YG
DS3: CL-200YG
Q38: 2SC4081 S
CLSW
X1: CR-613
4.935 MHz
Q11: UN9214
CLONE
BATT
CHECK
8 KEY
BATV
BP-206
R3V
CONT
R3V
VP
RIPPLE
FIL
Q26: 2SC4081 S
Q4: 2SA1588 GR
Q5: XP1501 AB
X6
D3: 1SS372
D5: 1SS372
D15: 1SS372
D19: 1SS372
D20: 1SS372
LPF LPF
LPF
LPF
BPF
HPF
x2
x2
x2
D9: MA2S077
15–30 MHz
Q401: 3SK293
D703: MA2S077
Q701: 3SK293D701: 1SV286
AMUTE
Q851: 3SK293
D804: 1SV308
D854: 1SV308
+3SC
LIGHT
BATT
Q8: 2SC5195
CONV VCO (1291, 1320 or 1351 MHz)
2nd VCO (214.05 MHz or 266.15 MHz)
*1
3RD LO (12.8 MHz or 25.6 MHz)
0.495–249.9950 240.5950–490.0950
250.0000–799.9950 245.0500–520.0475
800.0000–1149.9950 279.9500–454.9475
1150.0000–1176.0000 381.1000–355.1000
1176.0050–1229.9950 384.0950–330.1050
1230.0000–1255.0000 301.1000–276.1000
1255.0050–1286.0000 305.0950–274.1000
1286.0050–1320.9950 305.0950–270.1050
1321.0000–1349.9950 270.1000–299.0950
1350.0000–1384.9950 270.1000–305.0950
1385.0000–1394.9950 334.1000–344.0950
1395.0000–1427.9950 315.1000–348.0950
: 1ST VCO FREQUENCY LISTS
1428.0000–1515.9950 377.1000–465.0950
1516.0000–1569.9950 436.1000–490.0950
1570.0000–1579.9950 245.0500–250.0475
1580.0000–1739.9950 264.5500–344.5475
1740.0000–1789.9950 330.0500–355.0475
1790.0000–1809.9950 369.5500–379.5475
1810.0000–1849.9950 365.0500–385.0475
1850.0000–2039.9950 399.5500–494.5475
2040.0000–2109.9950 480.0500–515.0475
2110.0000–2204.9950 289.4500–336.9475
2205.0000–2250.9950 322.4500–345.4475
2251.0000–2450.0950 359.9500–459.4975
*1
Displayed frequency (MHz) 1st VCO frequency (MHz) Displayed frequency (MHz) 1st VCO frequency (MHz)

Icom IC-R3 Specifications

General

Brand	Icom
Model	IC-R3
Category	Receiver
Language	English