Icom IC-R2 Service Manual Download

Page: 33 / 35

• RF UNIT

11 - 2

R169
470

SHIFT OFF 267.2-380.0MHz
SHIFT ON 380.0-550.0MHz

1stVCO

ATT

CHASSIS

UNIT

C541 0.1

C542 0.1

D69
MA2S077

R232
330

R233
82

R234 82

D68
1SV172

R235
1.5 k

D65
MA2S077

R225
2.2 k

C525
0.01

D66 MA2S077

Q508
XP4312

C545
0.01

L91
3.9

R238
100 k

C522
0.01

C563
0.001

C667
0.01

R327 1.5 k

0.495-1.9M

C523
0.0015

L85
3.9

L86
0.47

L87
0.68

C527
82 P

C528
27 P

R227
1 k

C536
0.1

D67 MA2S077

D70
MA2S077

R226
2.2 k

C524
0.01

C526
0.039

L88
3.3

C534
330 P

C535
0.001

L89
3.3

C657
680 P

C658
0.0022

1.9-15M

HFC

HF3V

C537
0.1

L90
100

Q505
2SC4215 O

C539
0.1

R3V

D72 1SV308

Q506
DTA144EE

Q509
DTA144EE

C562
0.001

R230
10 k

R229
47 k

B1_3V

SHIFT

+3S

C211
0.001

C163
0.001

C162
10

Q29
DTC144EE

C182
0.001

C180
0.001

L62
10.5 nH

D54
1SV286

R188
1 k

R123
47 k

R160
2.7 k

L68
600

R104
4.7 k

L63
7.5 nH

C164
0.001

D46
MA2S077

C160
0.001

C173
0.001

C158
0.001

C166
0.001

C178
0.001

C183
1.5 P

IC4
UPC2746T

R124
120

R163
120

R162
4.7 k

Q30
2SC5006

Q28
2SC5006

R125
4.7 k

C237
1.5 P

C156
0.5 P

C165
2 P

Q40
2SC5231 C8

C236
0.001

R171
220

R170
82 k

C235
0.001

C510
2 P

L80 5.6 nH

R319
10

C244
5 P

C169
0.001

DBL2

DBL1

+3S

Q33
XP1113

R152
10 k

D50
1SV308

R151
1 k

D52
1SV308

R128
10 k

C172
0.001

C192
4 P

DBL1

Q31 FH102

R129
1 k

C194
22 P

L53
15 nH

C193
8 P

C191
2 P

C190
1.5 P

C167
0.001

L52
22 nH

L50
22 nH

D42
MA2S077

R132
22 k

C168
0.001

R133
4.7 k

C186
0.001

D43
MA2S077

R210
33

R156
2.7 k

LV1

Q43
2SC5231 C8

C257
0.001

C256
0.001

C258
0.001

R198
56 k

R197
220

R196
150

C210
0.1

C121
0.001

D25 1SV308

Q504 XP1113

R228
100

C538
0.1

C560
0.001

C561
0.001

B2_3V

B3_3V

C15
1 P

Q14 FH102

C243 18 P

C118
0.001

R78
330

C14
0.001

C16
0.001

C516
220 P

C517
180 P

C518
0.001

C519
0.0015

C520
0.01

L83
0.47

L84
0.47

R223
2.2 k

C521
0.1

D64 MA2S077

C529
150 P

C530
330 P

C531
180 P

C532
0.1

R224
3.3 k

C13
27 P

C416
27 P

L81 0.27

L82 0.33

C511
33 P

C512
12 P

C514
150 P

C515
100 P

D63
MA2S077

R222
2.2 k

R236
10 k

C543
0.001

C544
0.001

L58
56 nH

L59
56 nH

L14 56 nH

R237
2.7 k

C558
0.001

15-30M

C513
82 P

C546
0.1

D73 1SV308

C540
0.1

Q507
2SC5277 D2

L57
47 nH

D74
1SV308

D75
1SV308

175M LPF

VHF

118-175M

C11
22 P

C67
33 P

C9 2.5 P

C10 1.5 P

C8
18 P

C12
47 P

L70
0.10

R216
2.2 k

C548
0.001

R8
15 k

C69
0.001

C233
0.001

R79
4.7 k

C134
0.001

C28
0.001

R15
47 k

Q35

PA805T

L60
6.8 nH

C30
0.001

C59
2 P

D1
HVU350

C119
0.001

R9
6.8 k

L1
47 nH

R10
47 k

L28
68 nH

C550
8 P

R11
47 k

R16
0.001

R81
2.2 k

VHF3V

C136
7 P

C58
0.001

D29
1SV308

D2
HVU350

TRAC

C104
0.01

C105
1

C107
0.22

VCC1

IN1

ENB

CLK

DATA

LOK

CP1

FI1

FO1

FO2

FI2

CP2

GND2

VCC2

IN2

GND1

IC3
UPD3140GS

R65 5.6 k

C423
1

C108
0.22

R202
220

Q45
2SC4117 GR

Q2
2SK880 Y

R200
5.6 k

R64
390

C655
0.047

C84
0.001

R135
4.7 k

C248
1

D44
MA2S077

C188
0.001

R215
33

R66
22 k

C1
39 P

C85
18 P

R38
100

R39
100 k

D18
HVU350

X1 CR-593

C106
0.1

R134
10 k

R131
22 k

C171
0.001

DBL2

L51
15 nH

L55
10 nH

C199
12 P

C197
3.5 P

R130
1 k

C198
6 P

C196
2 P

L54
12 nH

C195
1.5 P

R147
1 k

C170
0.001

1
2

J1 AXK6S40445P

GND

SDET

D47
1SV308

C402
47 P

BATRY

GND

RSSI

WFM

AMS

FSET

+3V

GND

PSTB

PDAUL

+3S

SHIFT

ATT

DBL1

R3V

GND

PCK_IS

GND

SDET

VHFC

UHFC

800MC

300MC

TRAC

HFC

DBL2

BATRY

FSET

PDAUL

PSTB

+3V

PCK_IS

C241 0.22

VHFC

UHFC

300MC

300M3V

VHF3V

UHF3V

G3V

Q502 XP1113

Q503 XP1113

C424
0.01

C503
0.001

C504
0.001

R3V

Q501 DTA144EE

C659
10

R3V

R40
100 k

C87
47 P

C88
47 P

C89
47 P

C103 0.01

R43 100

R42 100

R41 100

C86
0.01

C81
0.001

L69 22 nH

C250
8 P

C252
8 P

C251
4 P

L20
47 nH

Q6
FH102

C249
0.01

R3V

R121 330

C209
0.001

Q37
2SC4617 S

C155
5 P

R5
6.8 k

R67
10 k

R201
10 k

R154 1 k

R187
2.2 k

C2
0.22

C654 0.22

C656 8 P

CP4

D5
HVU350

R91
2.2 k

300M3V

UHF3V

330-470M

C27
0.001

D4
HVU350

800M3V

C214
0.001

R100 12 k

R89
4.7 k

L61
6.8 nH

UHF

C410
0.001

C150
0.001

C135
0.001

C54
0.001

C216
12 P

C218
1 P

R14
6.8 k

C21
3 P

C22
7 P

R13 15 k

C23
5 P

C151
4 P

L5
15 nH

L4
22 nH

L3
22 nH

L39
39 nH

C20
33 P

L2
33 nH

C19
12 P

D3
1SV308

R239
2.2 k

R99
1 k

L10
22 nH

R95
2.2 k

C35
10 P

C32
0.001

L9
33 nH

C40
15 P

C41
5 P

D13
1SV308

D11 1SV308

R98
2.2 k

L7
27 nH

C42
3.5 P

C33
33 P

R102
2.2 k

R108
2.2 k

Q36 2SC5231 C8

C44 0.01

C145
470 P

L8
5.6 nH

L41 0.1

R101
47 k

R93
120

C141
0.01

R6
120

R105
68

C142 0.001

Q24 2SC5277 D2

C138
470 P

L40
8.2 nH

C139 10 P

L42
5.6 nH

C39
4 P

C37
2.5 P

C36
10 P

C665
100 P

C43
100 P

C666
390 P

L92
0.39

R18
15 k

30-118M

175-330M

D34
1SV308

D32
1SV308

R323
120

D71
1SV308

470-833M

R1
330

C80
47 P

L45
10 nH

C79
0.001

C208
47 P

D58
MA2S077

GND

RFI

PS 4

VCC 5

IFO

IC10
UPC2757T-E3

C435
0.001

C432
0.001

D59
MA2S077

R203
10 k

C18
0.01

C429
0.01

C207
33 P

R120
4.7 k

D53
MA2S111

C82
10

D17
1SV305

R219
27

C427
56 P

L73
1.2

L77
8.2 nH

C507
150 P

FI3 FL-293

R37
1.5 k

C78
0.33

R34
1 k

C73
0.001

R54
22 k

Q41
DTA144EE

C247
6 P

L21
LS-510

Q5
2SC5231 C8

C102
0.001

R35
15 k

C259
100 P

R36
6.8 k

R204 10 k

R205 10 k

R207
10 k

OSCIN

OSCOUT

MIXOUT

VCC

IFIN

DEC

FILOUT

FILIN

AFOUT

QUAD

IFOUT

RSSI

N-DET

N-REC

GND

MIXIN

IC2
TA31136FN

CP2

L17
3.3

C101
10 P

C74
0.001

R209
1.5 k

R55
3.3 k

C154
10 P

C75 0.001

C430
0.01

R103
10 k

D60
MA2S077

D61
MA2S077

R208
10 k

C431
0.01

R62
82

C94
0.001

R56
470

C95
0.001

C96
0.01

R57
10 k

R58
10 k

C97
0.01

R59
1.5 k

C98
680 P

R60
100 k

R61
330 k

R46
15 k

C99
680 P

C100
0.1

CP1

C239
0.01

R49
10

FI2
CFWM450E

800MC

800M3V

R159
1 k

R199
12 k

C90
0.01

D56
MA132WK

C505
0.001

C92
0.01

R3V

R172
15 k

R174
10 k

R50
10 k

C221
0.01

WFM

Q46 XP4312

D55
MA132WK

C61
0.001

R28
1 M

C65
0.01

C66
0.01

Q4
XP6501 AB

AMS

C60
0.01

Q44
XP4312

C62
10

R29
470 k

R27
22 k

C433
0.001

C200
0.01

R26
47 k

R31
1 k

Q1 XP6501 AB

WFM

WFMS

R179
15 k

R116
150 k

D57
MA728

C434
0.01

R177
100 k

C64
15 P

C63
150 P

C242
0.22

R30
1.5 k

C93
0.001

RSSI

D21 MA6S718

D20 MA6S718

C264
0.001

L74
39 nH

C436
4 P

D62 MA728

C70
0.001

GND

RFI

PS 4

VCC 5

IFO

IC1 UPC2757T-E3

L56
6.8 nH

C206
3.5 P

C234
0.001

FI1 EFCH266MKQP1

L15
39 nH

C71
4 P

R220
15

R221
330

R4
330

C153
0.1

G3V

D36 1SV308

R231
4.7 k

R324
82

R325
100

R326
82

C664
0.1

C663
0.1

IC11
UPC2746T

C662
0.001

833-1300M

C52
470 P

R110
12 k

R112
2.2 k

C148
470 P

C5
470 P

Q26 2SC5277 D2

R19
47 k

R20
120

C50
1 P

L44
4.7 nH

C147 2.5 P

L43
4.7 nH

L13
5.6 nH

C51
3 P

R106
47 k

C55
0.001

C46
3 P

C49
3 P

C45
0.01

L12
10 nH

D31
MA132WK

C48
6 P

C47
6 P

L11
15 nH

C414
0.001

C557
0.001

C553
0.001

WFMS

4 5

3 5

R88
330

ON: 3.08

OFF: 1.15

ON: 0

OFF: 1.91

ON: 0

OFF: 1.91

ON: 0

OFF: 3.0

1.9-15M: 1.88

0.495-1.9M: 1.99

0.495-1.9M: 2.9

3.12

1.9-15M: 2.05

0.495-30M: 0.34

0.495-30M:2.97

1.9-15M: 2.91

15-30M: 2.91

15-30M: 2.05

118-175M: 2.12

118-175M: 3.0

118-175M: 2.47

118-175M: 3.0

118-175M: 1.1

15-30M: 1.89

OFF: 0

ON: 0.79

15-30M: 1.15

118-175M: 1.89

833-1300M: 2.97

833-1300M: 2.24

833-1300M: 0.58

833-1300M: 1.23

833-1300M: 0.53

470-833M: 1.88

30-118M
175-330M: 0.37

30-118M
175-330M: 2.78

30-118M
175-330M: 2.99

30-118M
175-330M: 2.46

470-833M: 0.54

470-833M: 2.45

470-833M: 2.98

330-470M: 3.05

330-470M: 2.5

330-470M: 3.5

330-470M: 2.18

330-470M: 0.42

330-470M: 1.91

118-175M: 1.19

118-175M: 0.49

1.71

2.24

2.42

0.95

1.8

3.15

DBL1ON: 2.51

DBL2ON: 2.51

DBL2ON: 1.07

DBL2ON: 3.06

DBL2ON: 2.83

DBL1ON: 1.05

DBL1ON: 3.06

DBL1ON: 2.84

DBL1,2OFF: 1.48

3.19

FM: 1.24

WFM: 1.5

0.89

2.4

1.66

FM: 1.24

WFM: 1.5

2.72

3.12

2.0

FM: 1.27

WFM: 1.74

WFM: 1.16

FM: 1.26

0.82

1.34

1.37

SHIFT ON: 3.13
SHIFT OFF: 0.47

SHIFT ON: 1.99
SHIFT OFF: 1.21

Summary of Contents for IC-R2

Page 1: ...SERVICE MANUAL COMMUNICATIONS RECEIVER...

Page 2: ...Quantity required SAMPLE ORDER 8930046581 LCD Contact IC R2 LOGIC UNIT 5 pieces 8810009560 Screw PH BO M2x6 ZK IC R2 Chassis 10 pieces Addresses are provided on the inside back cover for your conveni...

Page 3: ...PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 3 5 3 RECEIVER ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 S...

Page 4: ...spurious points FM and WFM are measured at 12 dB SINAD AM is measured at 10 dB S N Squelch Sensitivity Selectivity AM FM more than 15 kHz 6 dB less than 30 kHz 60 dB WFM more than 150 kHz 6 dB Audio...

Page 5: ...6F AF mute switch Q37 2SJ144 AF filter Q30 XP6501 3 2 regurater IC4 S 81332H 2nd mixer IC10 PC2757T IF amplifer Q5 2SC5231 FM IF IC IC2 TA31136FN PLL circuit PLL IC IC3 PD3140GS PLL reference oscillat...

Page 6: ...in the direction of the arrow REMOVING THE RF UNIT 1 Unscrew 1 screw B 2 Remove 1 knob c Unscrew 2 nuts D and E 3 Unsolder 5 points F and then remove the RF unit REMOVING THE LOGIC UNIT 1 Unscrew 2 s...

Page 7: ...lters D3 D4 and band switching diode D29 The 470 MHz 832 995 MHz signals are amplified at RF amplifier Q24 via the band pass filter C32 C33 C35 C37 C39 C144 C145 between the band switching diode D11 D...

Page 8: ...and pass filter and are then applied to the pre amplifier Q31 While in WFM mode AF signals are applied to the pre amplifier Q31 directly The pre amplified AF signals pass through the AF mute cir cuit...

Page 9: ...2 MHz reference frequency which is stabilized within the tem perature range 10 C 14 F to 60 C 140 F The refer ence frequency is applied to the PLL IC IC3 pin 16 and the signal is output from the pin 1...

Page 10: ...or UP DOWN switches Output AF mute switch LOGIC unit Q37 control signal LOW While squelched Input port for the Low battery detec tion Input port for the RSSI signal from the FM IF IC RF unit IC2 pin12...

Page 11: ...h PLL IC RF unit IC3 and EEPROM IC LOGIC unit IC2 Outputs clock signal to EEPROM IC Input ports for Initial matrix Outputs strobe signals for the PLL IC Outputs data signals to the PLL IC Input port f...

Page 12: ...select the sub menu Screen Memory CH Bank 1 then input adjustment frequency at right y Select Write Receiver of the Clone on the top menu Application writes adjustment frequency data to the connected...

Page 13: ...5 2 CONNECTION DC power supply 3 0 V 1 0 A Standard signal generator AD 92SMA Optional SMA BNC adaptor 1 8 3 5 mm 3 conductor plug Terminator for the entering adjustment mode 68 k to SP jack...

Page 14: ...00 MHz Receiving Displayed frequency FR ch 280 100 MHz Receiving Displayed frequency tk ch 145 600 MHz Connect an SSG to the antenna connector and set as Level 1 mV 60 dB Deviation 3 5 kHz Modulation...

Page 15: ...5 4 L21 Detector output voltage adjustment LV1 1st VCO lock voltage check point QUAD Detector output voltage check point LV2 2nd VCO lock voltage check point F PLL Reference Frequency check point...

Page 16: ...V 113 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Displayed frequency RS ch 145 100 MHz Set the SSG as Level 0 5 V 113 dBm Receiving Displayed frequency RS ch 200 100 MHz Set the SSG as Level 0 5...

Page 17: ...5 6 SEN VHF and UHF sensitivity check point...

Page 18: ...J2GEJ 124 X 120 k R52 7030007340 S RESISTOR ERJ2GEJ 153 X 15 k R67 7030005240 S RESISTOR ERJ2GEJ 473 X 47 k R68 7030005040 S RESISTOR ERJ2GEJ 472 X 4 7 k R77 7030005090 S RESISTOR ERJ2GEJ 104 X 100 k...

Page 19: ...C1005 JB 0J 104K T N C98 4550006760 S TANTALUM TEMSVB2 1A 336M 8R C100 4030013970 S CERAMIC C1005 JB 0J 104K T N C101 4030013850 S CERAMIC ECUE1E102KBQ C102 4030014200 S CERAMIC ECUE1H101JCQ C103 4030...

Page 20: ...RE 8N2Z F L80 6200005630 S COIL ELJRE 5N6Z F L81 6200004940 S COIL MLF1608D R27K T L82 6200005140 S COIL MLF1608D R33K T L83 6200004790 S COIL MLF1608D R47K T L84 6200004790 S COIL MLF1608D R47K T L85...

Page 21: ...82 R235 7030005030 S RESISTOR ERJ2GEJ 152 X 1 5 k R236 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R237 7030009140 S RESISTOR ERJ2GEJ 272 X 2 7 k R238 7030005090 S RESISTOR ERJ2GEJ 104 X 100 k R239 70300...

Page 22: ...03K T A C250 4030014110 S CERAMIC ECUE1H080CCQ C251 4030014070 S CERAMIC ECUE1H040BCQ C252 4030014110 S CERAMIC ECUE1H080CCQ C256 4030013850 S CERAMIC ECUE1E102KBQ C257 4030013850 S CERAMIC ECUE1E102K...

Page 23: ...30014200 S CERAMIC ECUE1H101JCQ C666 4030014470 S CERAMIC ECUE1E391KBQ C667 4030009820 S CERAMIC C1005 JB 1C 103K T A J1 6510020550 S CONNECTOR AXK6S40445P EP1 0910050763 PCB B 5163C 6 6 REF ORDER DES...

Page 24: ...P15 8930044250 1995 BATT seal 1 MP22 8810009790 Screw PH B0 1 7X4NI ZU BT 3 MP23 8810009560 Screw PH B0 2X6ZK BT 2 MP26 8930047470 1995 Mic sheet 1 MP27 8930043440 Sponge EY 1 7 1 CABINET PARTS CHASSI...

Page 25: ...PARTS R RF UNIT L LOGIC UNIT SP1 C MP4 C MP27 C MP26 C MP7 C MP11 C MP1 C MP14 C MP10 C MP6 C MP13 C MP23 C MP15 C MP2 C MP3 C MP5 C MP22 C MP5 L MP22 C MP4 L RF unit LOGIC unit MP1 L DS8 L MP2 L MP3...

Page 26: ...S Symbol BR TRANSISTOR AND FET S B E C E C B E C B E C B E C B E C B E C B E C B B E C B E C B E C E2 B2 B1 C2 E1 C1 E2 B2 B1 C2 E1 C1 B1 B2 E C2 C1 E1 C2 B1 C1 E2 B2 E1 C2 B1 C1 E2 B2 S D G S D G 2S...

Page 27: ...BOARD LAYOUTS 9 1 LOGIC UNIT TOP VIEW R185 R26 IC2 R77 C42 R51 R50 R49 D1 R86 Q18 R35 R34 R33 R32 C51 C106 Q40 W2 IC11 R5 DS2 R100 R87 Q13 C39 R24 R89 R88 C40 IC5 D9 D8 D7 D6 D10 D14 C121 C24 IC3 C5 C...

Page 28: ...9 C91 R164 R166 C90 C80 R165 R137 R156 R113 W5 R112 R159 C82 Q35 C61 IC15 Q23 C89 Q36 Q37 C86 Q30 IC14 C88 IC1 C116 D13 C16 Q24 C118 C60 S8 C87 IC9 S10 J1 C17 C18 C19 Q26 C33 D5 D15 C48 C94 D3 C36 Q41...

Page 29: ...C542 C541 R232 C151 R14 L3 R13 L84 Q35 D4 L92 L9 L12 L43 L44 L60 IC10 FI3 Q41 C242 D5 Q36 C520 D65 C532 C525 C523 L85 C524 D70 D64 C521 C529 C530 C562 R134 Q33 C560 C561 R89 R88 C134 C135 C27 C550 C58...

Page 30: ...8 C190 C193 C191 L53 L51 C410 C503 D20 Q502 Q501 D67 Q505 L90 C557 C69 R78 C118 C35 D32 C436 L74 D59 R203 L21 C507 R207 D61 L15 R102 R101 D21 L42 Q24 R100 C145 D71 C121 R81 C153 C16 R11 C15 C14 C243 C...

Page 31: ...329 995MHz 833 1309 995MHz 470 832 995MHz D32 1SV308 D34 1SV308 LOSW CONT x2 x2 Q33 XP1113 3S Q31a FH102 494 195MHz 833 000 1066 695MHz Q31b FH102 1066 700 1309 995MHz 494 200 832 995MHz BANDSW IC11...

Page 32: ...8 100 k R23 15 k Q40 2SA1588 GR R185 3 3 k S1 S10 JPM1990 2013R R37 470 KSO D6 MA2S111 D7 MA2S111 D8 MA2S111 R52 15 k R86 100 k R77 100 k ECS CS 1 SO 2 WP 3 VSS 4 SI 5 SCK 6 HOLD 7 VCC 8 IC2 X25650S8I...

Page 33: ...6 FH102 C249 0 01 R3V R121 330 C209 0 001 Q37 2SC4617 S C155 5 P R5 6 8 k R67 10 k R201 10 k R154 1 k R187 2 2 k C2 0 22 C654 0 22 C656 8 P CP4 D5 HVU350 R91 2 2 k 300M3V UHF3V 330 470M C27 0 001 D4 H...

Page 34: ...155 Fax 425 454 1509 URL http www icomamerica com Customer Service Phone 425 454 7619 Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 604 952 4266 Fax 604 952 0090 URL http www icom...

Page 35: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan A 5520IZ S w 1998 Icom Inc...

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