Icom IC-R75 Скачать руководство пользователя страница 41

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9 - 1

SECTION 9

BLOCK DIAGRAM

ANT2
(450

Ω

)

450

Ω

1.6MHz

60MHz

ANT1
(50

Ω

)

CHASSIS
UNIT

RL121
MZ-12HG

RL141

MZ-12HG

10dB

2MHz

130MHz

BW=15kHz

R14V
REG

XTAL

BPF

AMP

XTAL

BPF

XTAL

BPF

OPTIONAL

XTAL

BPF

GATE

AMP

LPF

ATT

DET

AGC
AMP

NOISE

AMP

NOISE

AMP

NOISE

AMP

GATE
CTRL

AMP

Q472
XP4311

Q381
2SK2171 4
Q382
2SK2171 4

60MHz

Q441
2SK1740
Q442
2SK1740

FI461
FL-261

BW=15kHz

Q471
3SK131 MAS

D491
HSB88WS

FI701
FL-23

D711 MA77
D712 MA77
D713 MA77
D714 MA77

Q721
3SK131 MAS

Q735 2SC4081 R
Q736 DTC114EU
Q737 XP4311
D732 1SS355

FI761
FL-272

Q801
2SC4081 R

IC811
MC1496D

Q891
3SK131 MAS

2F3K

2FTH

OPTIONAL

UNIT

UT-106

Q911
2SK882 GR
Q912
2SC4081 R

RX TOTAL GAIN
R898
RV-150

IC1101
MC1496D

IC1001 TA31136FN
X1001 CDB450C24

IC1201
BU4052BCFV

UT-102
(OPT)

R1254
RV-148

SPEECH LEVEL

IC1281
BU4052BCFV

IC1291
LA4425A

IC1251
M5282FP

RFGV

AFMS

ANTC

ATTC

FM
DET

AMP

DE-
EMPHA

SELECT

3 kHz

IC1211D
NJM2058M

Q1001
2SK882 GR

IC2001 MC13022ADW
Q2021 DTC114EU
X2021 CSA3.60MGF103

Q1031
2SC4081 R

D1061
1SS375

Q1063
2SC4081 R

Q1061 XP4311
Q1064 XP4311
Q1065 XP4311
Q1066 XP4311

IC1211B
NJM2058M
IC1211A
NJM2058M

IC1211C NJM2058M
D831 1SS302

Q1051 2SC4081 R
D1051 1SS357

2FOP

3dB

Q731
2SK882 GR

IC731
LA1150N

Q733
2SC4081 R

D731
1SS375

Q734
2SC4081 R

Q732
2SA1576 R

2~4MHz

4~8MHz

8~11MHz

11~15MHz

15~22MHz

IC391
UPC1658G

Q411
2SC4673 D

PRE1
REG

PRE
AMP

Q383
XP4311

PRE2
REG

Q391
XP4311

PRO-
TECT

SW
CTRL

D141
1SS302
D142
1SS302

Q151
DTC114EU

IC551
BU4094BCFV
IC552
BU4094BCFV

IC561
TD62783AF
IC562
TD62783AF

SHIFT
REG-
ISTOR

DRIVER

22~30MHz

30~50MHz

(69.0115~129.0115MHz)

Q91
2SC4405

AMP

RIPPLE

FILTER

LPF

D/A

1/4

Q96
2SC4117

DELAY

CTRL

BT1521
CR2032

EXT SP

JACK

EXT SP

PHONE

JACK

PHONE BOARD

DISPLAY BOARD

PHONES

INT SP

LOGIC BOARD

FRONT UNIT

(9.4665MHz)

DDS

P/D

LOOP

FIL

(60MHz)

6.0MHz

IC22
UPB1509GV

P/D Freq = 30MHz / R
(R=7,8,9,10)

DIV

(1/R)

Q92 DTA114EU
D91 MA77
D92 MA77

Q71
2SK508
Q72
DTC114EU
D71
KV1470

Q81
2SK508
Q82
DTC114EU
D81
KV1470

IC23
TC7S04F

Q21
2SC4117

2SC4405

DDS Output Freq = P/D Freq

CR-282
(OPTION)

(30MHz)

IC21
SC-1246/A

X1
CR-275A

Q1
2SC4405

Q4
DTC114EU
D2
1SS355
RL1
AHY103

PCK

PDAT

PST1

PCO2

DRES

RECS

LOF2

REC OUT

REC REMOTE

VCOS

DULS

ULD

AMP

(455kHz)

Q3
DTC114EU
D1
DAN222

UNLC

ULD

DULS

IC1751 DS14C232TM
IC1771 TC7W04F
Q1771 2SA1576 R
Q1772 2SC4081 R
D1771 1SS355

Q1311 2SC4081 R
D1311 1SS355

CI-V

CPU

IC401A TC74HC04AF
IC401B TC74HC04AF
Q401 XP4601
D401 1SS355

IC231
X25320S

IC351
M52354GP

X111
CM200S
(32.768 kHz)
X112
CR-567
(9.8304 MHz)

Q391
2SC4116 BL
D381
MA8051 M
D382
MA729
D393
1SS355
IC391
S-80842ALMP-DD6
IC392
TC7S08F

FRONT
KEY

LCD

R141(I)
AF GAIN

VR BOARD

DS101
HLC7395-012400

DRIVER

BACK
LIGHT

DIMV

Q11 2SC4116 BL
Q21 2SC4116 BL
Q31 2SC4116 BL
Q41 2SC4116 BL
Q51 2SC4116 BL
Q61 2SC4116 BL
Q71 2SC4116 BL
Q81 2SC4116 BL

TLYE1002 X 24

MAIN DIAL

R141(O)
RF GAIN/SQL

EP1
RMS20-250-201-1R

R131(I)
TWIN PBT(I)

MUP

MDN

AFGL

RFGL

PB1L

PB2L

R131(O)
TWIN PBT(O)

RESET

IC401C
TC74HC04AF
IC401D
TC74HC04AF
IC401E
TC74HC04AF
IC401F
TC74HC04AF

EMTI

DIMV
RFGV
AFGV

BEEP

HVR

BPCK

MUTE

PLL UNIT

MAIN UNIT

MCK

AGC

AFS1

AFS2

SQLS

MDAT

SPST

SBSY

BEEP

LPF

PVR
AMP

VCA

AMP

MUTE

AMP

LPF

ATT

HPF

LPF

ATT

LPF

PRE
AMP

BPF

B0S
B1S
B2S
B3S
B4S
B5S
B6S
B7S
B8S
B9S
PR1S
PR2S
POFS
ATTS
ANTS

2S3K
2STH
2SOP
3S3K
3S6K
3S15
3SOP

LOF2

PRE1

POFF

PRE1

AGC

14V

R8V

14V

PRE2

14V

PRE2

POFF

ATTC

ANTC

AGRS

AGFS

AGSS

AGOS

DRES

DSPS

MDAT

MCK

DSTB

DINT

50~60MHz

NBS
NBLS
UNLC

IC1603
TD62783AF

DRIVER

BUFF

FI851
FL-65

3F3K

CERAMIC

BPF

FI861
CFWS450HT

3F6K

CERAMIC

BPF

FI871
CFWS450E

3F15

CERAMIC

BPF

3FOP

OPTIONAL

XTAL

BPF

FMNL

SALI

AGC

SML

SAMS

DET

AGC

DET

BUFF

AGC
AMP

METER

AMP

BUFF

IC1601
BU4094BCFV

SHIFT
REG-
ISTOR

AFS1
AFS2
AFMS
AGFS
AGSS
AGOS
NBS
NBLS

MCK

MDAT

ASTB

SPST

SBSY

RXS
AGRS
SQLS
RECS

SALI
EMTI
FMNL
SML

PST3
PST2
PST1
PCO2
PCK
PDAT
DRES
MCK
MDAT
ASTB
ISTB
RSTB
DSTB

IC1602
BU4094BCFV

SHIFT
REG-
ISTOR

2S3K
2STH
2SOP
3S3K
3S6K
3S15
3SOP
SAMS

MCK

MDAT

ISTB

REG

D1351
DSA3A1

IC1361
AN78L05M

REG

DC-DC

DRIVER

PWRC

DRIVER

Q351
DTC114EU

DRIVE

AMP

EEPROM

D/R

PRO-
TECT

IC1371
PQ30RV31
D1371
1SS355

IC1411

PC1555G2

D1412 1SS302
D1413 MA8051 M

Q1381 2SC1664 Q
Q1382 DTC114EU
D1381 1SS302

IC1391 TA7808F

IC1401 TA7805F

HVR

H5V

14V

R8V

RXS

F1351
FGB 3A

DC IN

PWRC

DINT

DSPS
BPCK
PWRS

Q421
DTA144EU

RS-232C

Q511
2SA1576 R
Q512
XP4601

BACKUP

B5V

IC101
HD6433835

IC101
HD66100F

H5V

VCO

Q93
DTC114EU

VCOS

DRIVER

DDS

D/R

LPF

AMP

IC151
SC-1287

Q151
2SC4117

PCK
PDAT
PST2
DRES

DDS

D/R

LPF

AMP

IC201
SC-1287

Q201
2SC4117

PCK
PDAT
PST3
DRES

RFGV

20dB

MCK

MDAT

RSTB

Содержание IC-R75

Страница 1: ...SERVICE MANUAL COMMUNICATIONS RECEIVER...

Страница 2: ...910051123 PCB B 5274C IC R75 PLL UNIT 1 pieces 8810005770 Screw Bih M3x8 ZK IC R75 Chassis 10 pieces Addresses are provided on the inside back cover for your convenience 1 Make sure a problem is inter...

Страница 3: ...EDURES 4 1 PREPARATION 4 1 4 2 PLL ADJUSTMENT 4 2 4 3 RECEIVER ADJUSTMENT 4 4 4 4 SET MODE ADJUSTMENT 4 7 SECTION 5 PARTS LIST SECTION 6 MECHANICAL PARTS AND DISASSEMBLY SECTION 7 SEMI CONDUCTOR INFOR...

Страница 4: ...Hz 6 dB less than 30 0 kHz 40 dB Audio output power More than 2 0 W at 10 distortion with an 8 load Antenna impedance 50 or 450 Squelch sensitivity threshold Preamplifiers are OFF 1 Preamplifier 1 is...

Страница 5: ...it 3rd mixer circuit IC811 BFO circuit 2nd IF circuit PLL IC IC21 Noise blaker circuit VCO circuit BFO mixer circuit IC1101 Bandpass filter Fuse 3A MAIN UNIT PLL UNIT Back up battery BT 1521 3rd IF fi...

Страница 6: ...e signals are applied to the low pass filter consisting of C170 C175 L171 L173 via the limitter circuit D141 D142 A diode is removed at the entrance of the low pass filter This device prevents the dio...

Страница 7: ...ss filter FI 461 to suppress out of band signals The filtered signal is amplified at a 1st IF amplifier Q471 and then applied to a 2nd mixer circuit D491 3 1 5 2ND MIXER AND IF CIRCUITS MAIN UNIT The...

Страница 8: ...e filter is selected FI871 which covering the 15 kHz bandwith When the FIL switch is turned 3FOP the filter is selected an optional crystal bandpass filter When the mode is selected SSB mode the filte...

Страница 9: ...the buffer amplifier Q1031 to convert the impedance The amplified IF signal is detected at the AGC detector D1061 via the C1061 and enters the base of the AGC amplifier Q1063 to control the voltage on...

Страница 10: ...1 on the PLL unit and is applied to the 10 bits DDS IC PLL unit IC201 pin 7 for the clock signal to produce the 455 kHz BFO signal The BFO signal is applied to the D A converter circuit and passes thr...

Страница 11: ...the BATT signal from the battery MAIN unit BT1521 is applied to the Q511 and then Q512 is OFF The output signal is applied to the CPU IC101 pin 31 as B5V signal to keep on working the clock function T...

Страница 12: ...h Input port for the ANF switch Input port for the NB switch Input port for the AGC switch Input port for the V M switch Pin number 49 50 51 52 53 54 55 56 57 63 77 78 79 80 81 82 83 84 90 91 92 93 94...

Страница 13: ...ce 50 k V DC or better EQUIPMENT Oscilloscope AC millivoltmeter External speaker Standard signal generator SSG GRADE AND RANGE Frequency range DC 20 MHz Measuring range 0 01 20 V Measuring range 10 mV...

Страница 14: ...z Mode USB Displayed frequency 9 4615 MHz Mode FM Displayed frequency 14 100000 MHz Mode USB Displayed frequency 14 100000 MHz Mode AM PLL PLL PLL PLL PLL PLL Connect the fre quency counter to P1 Conn...

Страница 15: ...rence frequency check point P91 1st and 3rd LO voltage check point C76 VCO voltage adjustment L2 Reference frequency adjustment for output frequency is 60 0000 MHz HCP71 VCO voltage check point C86 L5...

Страница 16: ...MP1 OFF set an SSG level as OFF Receiving Rear Panel Rear panel Connect the AC milli volt meter to the EXT SP jack with an 8 load Connect an oscillo scope to the EXT SP jack with 8 load Pre set to cen...

Страница 17: ...4 kHz IF FILTER2 2 4 kHz Set an SSG as Frequency 14 10150 MHz Level 500 V 54 dB Modulation OFF Set an SSG level as OFF Receiving Rear panel Rear panel Connect the AC milli volt meter to the EXT SP ja...

Страница 18: ...CONDITION MEASUREMENT VALUE POINT UNIT LOCATION UNIT ADJUST 1 2 Displayed frequency 14 10000 MHz Mode USB Noise Blanker OFF PREAMP1 ON Set an SSG as Frequency 14 10000 MHz Level 18 V 25 dB Modulation...

Страница 19: ...wn PBT SET on the display Then advance to the following setting or push UP key to scroll the display Push SET ANT key to set the PBT level When the PBT level is true shown GOOD on the display When S0...

Страница 20: ...V 1 k R149 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R150 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R151 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R152 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R153 7030...

Страница 21: ...030008560 S CERAMIC C1608 CH 1H 300J T A C201 4030008630 S CERAMIC C1608 JF 1C 104Z T A C202 4030008630 S CERAMIC C1608 JF 1C 104Z T A C203 4030008630 S CERAMIC C1608 JF 1C 104Z T A C204 4030008630 S...

Страница 22: ...0000130 S IC TD62783AF TP1 IC1751 1120002510 S IC DS14C232TM IC1771 1130005720 S IC TC7W04F TE12L IC2001 1110004940 S IC MC13022ADWR3 Q151 1590000680 S TRANSISTOR DTC114EUA T106 Q381 1560000720 S FET...

Страница 23: ...NL 322522T 100J L302 6200003020 S COIL NL 322522T R33J 3 L303 6200003010 S COIL NL 322522T R27J 3 L304 6200003020 S COIL NL 322522T R33J 3 L305 6200003030 S COIL NL 322522T R47J 3 L321 6200001830 S CO...

Страница 24: ...STOR ERJ3GEYJ 104 V 100 k 5 5 REF ORDER DESCRIPTION NO NO MAIN UNIT R732 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 k R733 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 R734 7030003320 S RESISTOR ERJ3GEYJ 10...

Страница 25: ...7 k R1259 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 k R1260 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 R1261 7030003480 S RESISTOR ERJ3GEYJ 222 V 2 2 k REF ORDER DESCRIPTION NO NO MAIN UNIT R1262 703000...

Страница 26: ...00 S CERAMIC C1608 JB 1C 104KT N C397 4030011600 S CERAMIC C1608 JB 1C 104KT N 5 7 REF ORDER DESCRIPTION NO NO MAIN UNIT C401 4030011600 S CERAMIC C1608 JB 1C 104KT N C411 4030007080 S CERAMIC C1608 C...

Страница 27: ...30006900 S CERAMIC C1608 JB 1E 103K T A C1352 4030006900 S CERAMIC C1608 JB 1E 103K T A C1353 4510004510 ELECTROLYTIC 25 MV 470 HC C1361 4510005860 S ELECTROLYTIC ECEV1HA2R2SR C1362 4030011600 S CERAM...

Страница 28: ...J L93 6180002970 S COIL NL 322522T 068J L94 6200001830 S COIL NL 322522T 100J L151 6200003130 S COIL NL 322522T 120J L152 6200003140 S COIL NL 322522T 150J L153 6200001830 S COIL NL 322522T 100J L201...

Страница 29: ...ESISTOR ERJ3GEYJ 102 V 1 k R231 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R232 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k REF ORDER DESCRIPTION NO NO PLL UNIT R233 7030003440 S RESISTOR ERJ3GEYJ 102 V 1...

Страница 30: ...0 S CERAMIC C1608 JB 1H 472K T A C202 4030006850 S CERAMIC C1608 JB 1H 471K T A C203 4030007120 S CERAMIC C1608 CH 1H 820J T A C204 4030009490 S CERAMIC C1608 JB 1H 821K T A C205 4030007070 S CERAMIC...

Страница 31: ...6030 2240 Front cover 1 MP2 8930001770 SP net 1 MP4 8930048740 2240 9 Key 1 MP5 8930048730 2240 6 Key 1 MP6 8930048750 2240 20 Key 1 MP7 8930048710 2240 Brake plate 1 MP9 8930049370 2240 Brake sheet 1...

Страница 32: ...1 D MP3 D DS101 D MP2 D DISPLAY UNIT MP24 F W4 F W3 F MP10 C EP2 F MP15 C MP382 M MP442 M MP15 C MP13 C MP13 C MP13 C MP13 C MP20 C J1 C MP19 C MP17 C MP18 C MP3 P MP9 P MP12 P MP16 C MP16 C PLL UNIT...

Страница 33: ...K131 MAS Symbol V11 DTA114 EU Symbol 14 DTA144 EU Symbol 16 XP4311 Symbol 3X TRANSISTOR AND FET S B E C E C B E C B D G S D G S 2SC4117 BL Symbol CL B E C B E C B C E C B C E C B E C B E C B E C E1 C2...

Страница 34: ...8 1 PHONE AND VR BOARDS SECTION 8 BOARD LAYOUTS R122 R121 C123 C122 C121 L121 VR BOARD R131 R141 J101 J101 to LOGIC board J451 R143 GND GND GND GND GND PB2L PB1L RFGL AFGL 5VL 1 10 PHONE BOARD TOP VI...

Страница 35: ...8 2 PHONE BOARD BOTTOM VIEW J121 J101 J101 to LOGIC board J471 GND AFE AFE AFE ESPO ESPO ESPO AFO AFO AFO 10 1...

Страница 36: ...8 3 8 2 DISPLAY BOARD TOP VIEW DS11 DS21 DS31 DS41 DS51 DS61 DS71 DS12 DS22 DS32 DS42 DS52 DS62 DS72 DS13 DS23 DS33 DS43 DS53 DS63 DS73 DS81 DS82 DS83...

Страница 37: ...4 J101 R11 R21 R31 R41 R51 R61 R71 R81 R12 R22 R32 R42 R52 R62 R72 R82 C101 Q11 Q21 Q31 Q41 Q51 Q61 Q71 Q81 IC101 J101 to LOGIC board J411 14V DIMV COM4 COM2 V1 V3 CL2 M GND GND COM3 COM1 V2 CL1 DO H...

Страница 38: ...51 X111 IC101 X112 IC231 C203 C201 C105 C202 R253 R252 R251 R258 R259 R231 C111 C104 C103 R201 R202 R203 R204 R205 R206 C112 C113 C114 C101 C352 IC401 IC351 R381 EP527 EP525 EP523 EP521 EP526 EP524 EP...

Страница 39: ...C76 L93 MP2 MP1 C86 J4 J3 MP5 J91 C106 C74 L71 L72 L91 L92 C119 L25 C24 IC23 L22 L27 L24 IC21 L4 L5 L1 J151 MP8 MP11 L153 C215 L203 C165 J1 IC22 L81 Q81 L82 C84 L94 Q71 R75 R85 R116 C124 R79 C83 C78...

Страница 40: ...231 L181 L183 L282 L261 L263 L242 D261 Q151 C151 C135 C134 C136 R141 C163 C341 C333 C322 C342 R171 C176 C174 C350 R321 R281 C290 R261 R241 C248 C385 Q383 R386 C433 C432 C435 C436 C434 C230 C269 C246 C...

Страница 41: ...55kHz Q3 DTC114EU D1 DAN222 UNLC ULD DULS IC1751 DS14C232TM IC1771 TC7W04F Q1771 2SA1576 R Q1772 2SC4081 R D1771 1SS355 Q1311 2SC4081 R D1311 1SS355 CI V CPU IC401A TC74HC04AF IC401B TC74HC04AF Q401 X...

Страница 42: ...5320SI 2 7 R231 100 k C231 0 1 H5VL RFGV AFGV DCK DUD C102 0 1 R223 10 k R224 10 k R225 10 k C221 0 1 R221 470 COM1 COM2 COM3 COM4 V3 V2 V1 V3 V2 V1 R161 47 k W163 W162 W161 R155 1k R153 1k R151 1k R1...

Страница 43: ...BL R12 220 R21 330 R22 220 R31 330 R32 220 DS23 TLYE1002 DS33 TLYE1002 Q21 2SC4116 BL Q81 2SC4116 BL DIMV R11 330 DS13 TLYE1002 Q11 2SC4116 BL CL1 V3 V2 V1 GND GND COM1 COM2 COM3 COM4 L2 O STB NT RES...

Страница 44: ...Y46 85 Y45 86 Y44 87 Y43 88 Y42 89 Y41 90 Y40 91 Y39 92 Y38 93 Y37 94 Y36 95 Y35 96 Y34 97 Y33 98 Y32 99 IC101 HD66100F H5VL V1 V3 V2 CL1 CL2 DO M C101 0 1 SE15 SE14 SE13 SE12 SE11 SE10 SE1 SE2 SE3 SE...

Страница 45: ...P C121 0 1 C125 47 P R115 82 k R80 12 k R116 33 k L94 10 H R117 68 Q97 2SC4117 BL C124 0 1 L83 LW 25 L81 LW 25 L73 LW 25 R72 680 k R73 33 C85 470 P C87 4 P L82 E544GN 110248 Q21 2SC4117 BL R49 1 k R55...

Страница 46: ...7 H 14V R8V ATTC ANTC C309 0 1 L305 0 47 H D302 MA77 D322 MA77 L326 0 22 H R321 100 C330 56 P C332 0 01 C331 22 P B7 L301 10 H L302 3 3 H L303 0 27 H C306 180P C308 100P C301 0 1 C302 8 P C303 180 P C...

Страница 47: ...D1412 1SS302 C1419 0 1 C1420 10 L1412 330 H D1413 MA8051 M R1414 100 R1416 100 C1421 0 1 C1418 47 H5V 14V 8V H5V 14V 8V 5V FUSE HOLDER F1352 S N5054 01 F1353 S N5054 R1382 2 2 k R1381 47 k Q1381 2SD16...

Страница 48: ...0 C1754 10 C1 V C1 C2 C2 V T2O R2I VCC GND T1O R1I R1O T1I T2I R2O 1 2 3 4 5 6 7 8 16 15 14 13 12 10 11 9 5 9 4 8 3 7 2 6 1 IC1751 DS14C232TM SS CIV CIVE IC1771A TC7W04F Q1771 2SA1576 R C1771 0 1 IC17...

Страница 49: ...201M S00B C111 1 ANT1 C131 33 P C134 82 P C136 56 P RL141 MZ 12D K L151 330 H Q151 DTC114EU R152 10 k C152 0 1 D141 1SS302 D142 1SS302 R141 2 2 k R142 470 R144 68 R143 330 C141 0 01 C164 0 1 L162 4 7...

Страница 50: ...france com Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 Fax 425 454 1509 URL http www icomamerica com Customer Service Phone 425 454 7619 A C N 006 092 575...

Страница 51: ...6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan A 5580I S 1999 by Icom Inc...

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