Icom IC-A23 Service Manual Download

Page: 33 / 38

C10
0.001

C11
0.001

C12
0.001

C13
0.001

C18
0.001

DS1
TTR3845UPFDCN

SEG29

SEG28

SEG27

SEG26

SEG31

SEG25

SEG24

SEG23

SEG22

SEG39

SEG38

SEG37

SEG36

SEG21

SEG20

SEG19

SEG18

SEG30

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG1

SEG10

SEG9

SEG8

SEG7

SEG6

SEG1

SEG5

SEG4

SEG0

SEG3

SEG2

COM3

COM2

COM1

COM0

S29

S28

S27

S26

S31

S25

S24

S23

S22

S39

S38

S37

S36

S21

S20

S19

S18

S30

S17

S16

S15

S14

S13

S12

S10

COM3

COM2

COM1

COM0

VL1

100

VL2

VL3

COM0

COM1

COM2

COM3

AVSS

VREF

VCC

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG12
SEG11
SEG10

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG1

SEG2

SEG0

SEG13

SEG14

SEG15

SEG16

SEG17

P30/SEG18

P31/SEG19

P32/SEG20

P33/SEG21

P34/SEG22

P35/SEG23

P36/SEG24

P37/SEG25

P01/SEG27

P02/SEG28

P03/SEG29

P04/SEG30

P05/SEG31

P06/SEG32

P07/SEG33

P10/SEG34

P12/SEG36

P13/SEG37

1/SEG35

P00/SEG26

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

CHGC

ECK

PCON

SEG36

SEG37

P67/AN7

P66/AN6

P65/AN5

P64/AN4

P63/SCLK22/AN3

P62/SCLK21/AN2

P61/SOUT2/AN1

P60/SIN2/AN0

P57/ADT/DA2

P56/DA1

P55/CNTR1

P54/CNTR0

P53/R

TP1

P52/R

TP0

P51/PWM1

P50/PWM0

P47/SRDY1

P46/SLCK1

P45/TXD

P44/RXD

P43/T

OUR

P42/INT2

P41/INT1

P40

P77

SBA

ATA

PCK

PSTB

BEEP

VORS

DICK

KS3

KS2

KS1

KS0

KS3

KS2

KS1

KS0

LIGHT

BPCPI

CLOUT

CLIN

DIUD

VORC

POWER

PTT

JACKDET

IC7
HN58X2432TI

VSS

VCC

TEST

SCL

SDA

C23
0.001

C27
0.001

C24
0.022

R19
1M

C135
10

C8
27p

C44
0.001

R6
10k

C7
24p

C47
470p

C91
0.0047

R48
100k

R58
100k

R59
100k

C93
1

C100
0.001

R52
120k

R109
100k

C99
0.001

C90
10

C92
0.001

R46
TBPS1R104K475H5Q

R45 33k

C89
0.001

R69
18k

C116
0.001

C117
0.1

C123
0.001

R71
18k

R70
180k

C118
0.0047

R72
4.7k

C98
0.1

SP—
VCCA
MIC
MIC REF
AGC
ANA IN
ANA OUT
NC
PLAYL
PLAYE
RECLED
XCLK
REC
VCCD

IC15 ISD1420SI

VSSD

VSSA

SP+

NC
IN2
NF2
NF1
NC
IN1
NC

OUT1

GND

ALC

VCC

OUT2

8
9

10
11
12
13
14

R44
15k

R42
39

IC9 BA3308F

C136
10

C137
1

C88
15

R43
100k

C127
0.47

R47
1M

D15
MA8036L

15
16
17
18
19
20
21
22
23
24
25
26
27
28

C601
0.22

C65
0.001

C66
0.001

C59
0.001

R113
120k

+5V

VREC

SCK

JACKDET

TO
RF UNIT
J3

PTT

VOLCK

RFSTB

VOLDATA

UNLK

TXC

SBAT

CHGC

VCC

SDATA

PCK

PSTB

PDATA

EXTMIC

DASTB

LIGHT

EXTPTT

VORDET

VORON

RFDET

BEEP

MOD

RSSI

+5V

SCK

JACKDET

PTT

VOLCK

RFSTB

VOLDATA

UNLK

TXC

SBAT

CHGC

VCC

SDATA

PCK

PSTB

PDATA

EXTMIC

DASTB

LIGHT

EXTPTT

RFDET

BEEP

RSSI

D11
MA2S111

Q5
UN9210

C35
0.001

R21
10k

C31
0.001

C34
47

C33
0.001

Q4
2SB1182

Q7
XP1501

+5V

VOUT

VIN

GUD

D10
MA2S111

C29
0.1

C28
22

R22
4.7k

R20
10k

IC16
S-81250SG-QD

Q6
UN9213

R98
1M

OUT

VDD

VSS

C25
0.01

C26
47

R18
10k

C22
0.001

R17
10k

Q3
2SD2216

C20
0.001

C6
0.001

R16
100k

R5
100k

UNLK

CHGC

COM0

COM1

COM2

COM3

R2
100k

R3
100k

R4
100k

C138
0.1

C139
0.1

C140
10

R1
47k

C2
0.1

P76

P75

P74

P73

P72

P71

P70/INT0

RESET

XCIN

XCOUT

XIN

XOUT

VSS

P27

P26

P25

P24

P23

P22

P21

P20

P17

P16

P15/SEG39

P14/SEG38

SEG38
SEG39

EDATA

VOLCK

SDATA

DASTB

VOLDATA

SCK

RFSTB

UNLK

KR0
KR1
KR2
KR3

MASTB

RESET

DCC

KR4

R30
22k

IC2
S-80945ALMP-DA9-T2

Q8
XP1201

BUSYLED

PTT

+5V

EXTPTT

INI

VCC

LIGHTC

VORDET

D12
MA2S111

R25
180

C43
0.001

R27
1k

R26
180

R28
470

Q9
XP1201

C53
0.001

R110
33k

D14
MA2S111

Q10
2SB1462

R32
470

C51
0.001

C49
4.7

R35
10k

C50
0.047

R34
220k

C52
0.001

R33
10k

C19
0.001

R31
33k

D13
MA8051 H

C48
0.01

Q2
2SC4211

Q1
2SB1132

R14
3.3k

R11
390

R12
390

R13
390

C9
0.1

R15
3.9k

C104
1

C107
0.1

C111
3.3

C103
10

R74
220k

R73
4.7k

R75
56k

R76
33k

R79
6.8k

C105
10

R81
1.8k

C108
0.001

R80
150k

C109
0.001

C106
0.001

R77
220k

C110
0.1

R84
4.7k

C113
0.1

R87
TBPS1S333K460H5Q

R85
18k

C112
0.1

R83
220k

R78
4.7k

R91
39k

R88
33k

R82
4.7k

1
2
3
4
5
6
7

R64
4.7k

R63
15k

R62
220k

R61
47k

C102
470p

C115
0.1

C114
0.1

R66
220k

1
2
3
4

IC13 NJM2904V

C125
10

R68
270k

R67
10k

C119
0.001

R89
470

R90
100k

R95
22k

R93
470k

R94
820k

1
2

3
4

IC14 NJM2903V

C122
0.1

R112
2.2M

D17
MA2S111

R558
12k

VORS

VORD

Q13
2SC4211

C600
0.01

C121
0.01

R560
1M
(IC-A5 only)

VORC

R86
4.7k

D16
MA2S111

1
2
3
4

IC11 NJM2903V

R60
39k

C101
0.001

QS
QS
Q8
Q7
Q6
Q5
OE
VDD

9
10
11
12
13
14
15
16

STR

CLK

VSS

Q12 UN9211

IC-A23 only

R39
22k

C86
0.015

R40
100k

R41
47k

IC8 BU4094BCFV

MMUTE

SDATA

SCK

VORON

PLAYC

RECC

LIGHTC

MASTB

SDATA

SCK

VORON

PLAYC

RECC

MASTB

SDATA

SCK

VORON

+5V

MASTB

Q17
DTC144EE

Q16
DTB123EK

C87
0.0047

ALCC

C45
0.001

IC12 NJM2902V

+5V

KR0

KR1

KR2

KR3

KS3

KS2

KR4

INI

KS1

KS0

R563
1M

R564
1M

D4
DA112

R562
1M

R561
1M

D3
DAP202U

D2
MA6S121

D1
MA2S111

VIN

VORD

RSSI

RFDET

THRMC

R101

R104
1k

R103
1k

C4 0.1

C128 0.1

C5 0.001

C129 0.1

C130 0.1

C131 0.1

R100
1k

R102
1k

R108
1M

R107
1M

DICK

DIUD

S2
UP

S3
DWN

S4
SQL

S5
POWER

S9
CLR

S8
3

S7
2

S6
1

S10
4

S11
5

S12
6

S13
ANL

S17
BANK

S16
9

S15
8

S14
7

S18
ENT

S19
0

S20
MR

S21
F

C126
0.1

R9
100k

R111
100k

R10
100k

R7
10k

R8
100k

D7
MA8100 M

D8
MA2S111

D9
MA728

IC3
S-81350HG-KD

C42
0.001

R24
100k

R23
220k

D18
MA8051 H

R96
100k

C120
22

R559
100k
(IC-A5 only)

R65
220k

D3
DA113

IC1
M38267M8L-266GP

Q11
XP4315

R37
NTCCM16084LH

R38
100k

C37
0.001

R36
15k

VIN

CLOUT

CLIN

THERMC

+5V

BDET

C1
0.001

X1
5.039MHz

Q15
XP4315

DS4
LT1EP53A

DS3
LNJ310M6URA

DS2
LNJ310M6URA

DS9
LN1371G-

DS10
LN1371G-

DS8
LN1371G-

DS5
LN1371G-

DS6
LN1371G-

DS7
LN1371G-

CHASSIS

MC1
EM-140

W10

IC-A23 only

IC-A5 only

IC-A23 only

KS0

KS1

INI

LOGIC UNIT

5.0V

5.1V

T:5.0V
R:0.0V

5.0V

9.3V

9.6V in = 9.6V

12V in = 12V

9.6V in = 5.0V

12V in = 0V

T:0.0V
R:4.7V

5.0V

VOR CH: 5.0V

LEFT SIDE

RIGHT SIDE

SECTION 11

VOLTAGE DIAGRAM

11 - 1

11 - 1 LOGIC UNIT

Summary of Contents for IC-A23

Page 1: ...iC a5 AIR BAND FM TRANSCEIVER iC a23 iC a23 iC a5 ...

Page 2: ...H BT 2 10 ZK IC A5 CHASSIS 6 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable components Turn them slowly and smoothly 4 DO NOT short any circuits or electronic par...

Page 3: ...CPU PORT ALLOCATIONS 4 5 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 2 5 3 TRIMMER ADJUSTMENT 5 3 5 4 RECEIVER ADJUSTMENT 5 7 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 LOGIC UNIT 9 1 9 2 RF UNIT 9 3 SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 1 LOGIC UNIT 11 1 11 2 RF UNIT...

Page 4: ...put power at 9 6 V DC 5 0 W PEP typical 1 5 W CW typical with supplied battery pack Modulation system Low level modulation Modulation limiting 70 100 of max deviation Audio harmonic distortion Less than 10 at 60 modulation Hum and noise ratio More than 35 dB Spurious emissions More than 60 dB Microphone impedance MIC 150 Ω RECEIVER Receive system Double conversion superheterodyne system Intermedia...

Page 5: ...RF amplifier Q11 3SK230 ALC detector D2 D3 MA728 Antenna switching circuit AF amplifier Low pass filter IC510 TC75W51F ALC CTRL Q1 UMS1 VOR switching Q19 UN9210 IC A23 only 1st mixer Q12 3SK151 30 05 MHz ALC amplifier Q5 2SC4211 Lo switching diode D6 D17 MA77 Electric volume IC505 M52429FP IF amplifier Q13 Q15 Q16 Q17 2SC4215 2nd mixer IF amplifier Noise detector IC1 TA31136FN PLL IC IC3 TB31207FN...

Page 6: ... r Unplug J1 to separate LOGIC unit and RF unit t Remove the LOGIC unit in the direction of the arrow 3 REMOVING THE SHIELD PLATE q Unsolder 3 points F to separate the shield plate and RF unit w Unscrew 1 screw G 2 4 mm silver 4 REMOVING THE RF UNIT q Unsolder 1 point H to separate the ANT plug w Unscrew 5 screws I 2 4 mm silver to separate the RF unit e Remove the RF unit in the direction of the ...

Page 7: ...uit to pro duce a 30 05 MHz 1st IF signal The 1st IF signal is applied to a crystal filter FI1 to sup press out of band signals The filtered 1st IF signal is applied to the 1st IF amplifier Q13 then applied to the 2nd mixer circuit IC1 pin 16 4 1 4 2ND IF AND DEMODULATOR CIRCUITS RF UNIT The 2nd mixer circuit converts the 1st IF signal into a 2nd IF signal A double conversion superheterodyne syste...

Page 8: ...nalyzes the noise condition and outputs the con trol signal to the shift resistor IC5 The shift resistor IC5 pin 14 outputs the squelch control signal via AFC line The signal is applied to the AF out control circuit Q36 Q35 to control the power amplifier IC6 and cut the AF signal line 4 1 7 AGC CIRCUIT RF UNIT The AGC Automatic Gain Control circuit reduce signal fad ing and keeps the audio output ...

Page 9: ...t passes through the 30 Hz bandpass filter IC12 R83 R85 R88 C112 C113 and is converted to a square wave signal at the VORC comparator IC14 The square wave signal is then applied to the CPU IC1 pin 22 as variable signal VORC The 9960 Hz component passes through the 10 kHz band pass filter IC12 R79 R81 C108 C109 These compo nents are FM modulated with 480 Hz deviation and 30 Hz modulation Signals ar...

Page 10: ...es this to obtain a specified transmit output power The modulated RF signal from the buffer amplifier Q6 is applied to the pre drive amplifier Q4 after being passed through the ALC attenuator D4 The signal is amplified at the YGR Q3 and power amplifier Q2 to obtain 5 W of RF power at 9 6 V DC The amplified signal passes through the low pass filter L5 C11 C16 The filtered signal is applied to the a...

Page 11: ...e receive 1st mixer Q12 or transmit buffer amplifier circuit Q6 via the T R switching diode D6 D17 4 4 POWER SUPPLY CIRCUITS VOLTAGE LINE Cont 16 17 PLL Loop filter OSC Tr VCO Buffer Buffer Buffer Q27 Buffer Q28 Q29 Q30 R134 R135 C168 C169 3 4 5 PCK IC3 PLL IC PDATA PSTB to 1st mixer circuit D17 D6 9 12 13 14 11 8 Q31 Q32 D24 C198 C177 From IC4 pin 14 C175 2ndLO signal to the IF IC IC1 pin 2 X2 R1...

Page 12: ...5 Port name VIN VORD RSSI RFDETV THRMC SBATT PDATA PCK PSTB BEEP VORS DICK DIUD LIGHT BPCPI CLOUT CLIN VORC POWER PTT JACKDET DCC RESET EDATA UNLK PCON ECK Description Input port for the battely voltage detection Input port for the VOR signal detec tion Input port for the receive signal level Input port for the power detection of power amplifier RF unit Q2 Input port for the transceiver s internal...

Page 13: ... key For example D setup t Follow the prompts y Program group CS A23 appears in the Programs fold er of the Start menu ADJUSTMENT FREQUENCY DATA When program the adjustment frequency data into memory channel back up the original memory data using the cloning software and OPC 478 and then reprogram it after adjust ment CAUTION When program the adjustment frequency data into the transceiver the tran...

Page 14: ... bar to the antenna connector RF power meter 0 1 10 W 50 Frequency counter Attenuator 40 dB or 50 dB Modulation analyzer Standard signal generator 0 1 V to 32 mV 127 dBm to 17 dBm CAUTION Audio generator AC millivolt meter Distortion meter Speaker 8 to the MIC SP jack to the MIC SP jack OPC 478 to an RS 232C port Personal computer DB9 female plug incl level converter circuit CAUTION DC ammeter DC ...

Page 15: ...ter or a 50 Ω dummy load to the antenna connector Transmitting Operating channel 2 ch PWRADJ 136 975 MHz Transmitting Operating channel 2 ch PWRADJ 136 975 MHz Connect an audio generator to the MIC connector and set as 1 kHz 200 mV Set a modulation analyzer as HPF OFF LPF OFF De emphasis OFF Detector P P 2 Transmitting Connect an audio generator to MIC connector and set as 1 kHz 20 mV Transmitting...

Page 16: ... Connect a standard signal generator to the antenna connector and set as Frequency 118 200 MHz Level 0 5 µV 113 dBm Modulation OFF Receiving Same adjustment as step 1 for following channels 8 ch ASADJT 136 975 MHz 9 ch FSADJS 161 650 MHz 10 ch FSADJT 161 650 MHz NOTE Tune the SSG s frequency to adjustment frequencies Operating channel 11 ch VORADJ 113 000 MHz Connect a standard signal generator to...

Page 17: ... V 10 kΩ R21 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kΩ R22 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 kΩ R23 7030003720 S RESISTOR ERJ3GEYJ 224 V 220 kΩ R24 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 kΩ R25 7030003350 S RESISTOR ERJ3GEYJ 181 V 180 Ω R26 7030003350 S RESISTOR ERJ3GEYJ 181 V 180 Ω R27 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 kΩ R28 7030003400 S RESISTOR ERJ3GEYJ 471 V 470 Ω R30 703000360...

Page 18: ...103K T A C49 4550005980 S TANTALUM TEMSVA 1A 475M 8L C50 4030008920 S CERAMIC C1608 JB 1C 473K T A C51 4030006860 S CERAMIC C1608 JB 1H 102K T A C52 4030006860 S CERAMIC C1608 JB 1H 102K T A C53 4030006860 S CERAMIC C1608 JB 1H 102K T A C59 4030006860 S CERAMIC C1608 JB 1H 102K T A C65 4030006860 S CERAMIC C1608 JB 1H 102K T A C66 4030006860 S CERAMIC C1608 JB 1H 102K T A C86 4030008860 S CERAMIC ...

Page 19: ...1 5TR 19 5N L7 6200008400 S COIL 0 35 1 6 6TL 36N L8 6200005710 S COIL ELJRE 27NG F L9 6200003590 S COIL EXCCL3225U1 L10 6200002370 S COIL LQN 1A 39NJ04 L11 6200006670 S COIL ELJRE 68NG F L12 6200008190 S COIL 0 25 1 9 8TL 80N L13 6200001630 S COIL ELJNC R10K F L14 6200002190 S COIL MLF2012A 4R7K T L15 6200008170 S COIL 0 35 1 6 8TL 54N L16 6200008280 S COIL 0 30 1 7 7TL 50N L18 6200007750 S COIL ...

Page 20: ... V 68 kΩ R125 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 Ω R126 7030003360 S RESISTOR ERJ3GEYJ 221 V 220 Ω R127 7030003540 S RESISTOR ERJ3GEYJ 682 V 6 8 kΩ R128 7030003360 S RESISTOR ERJ3GEYJ 221 V 220 Ω R129 7030003540 S RESISTOR ERJ3GEYJ 682 V 6 8 kΩ R130 7030003480 S RESISTOR ERJ3GEYJ 222 V 2 2 kΩ R131 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 kΩ R133 7030003600 S RESISTOR ERJ3GEYJ 223 V 22 kΩ R134...

Page 21: ...30006900 S CERAMIC C1608 JB 1E 103K T A C130 4510006220 S ELECTROLYTIC ECEV1CA101UP C140 4030006860 S CERAMIC C1608 JB 1H 102K T A C141 4030006860 S CERAMIC C1608 JB 1H 102K T A C142 4030006860 S CERAMIC C1608 JB 1H 102K T A C143 4030006860 S CERAMIC C1608 JB 1H 102K T A C144 4030006860 S CERAMIC C1608 JB 1H 102K T A C145 4030006860 S CERAMIC C1608 JB 1H 102K T A C146 4030006860 S CERAMIC C1608 JB...

Page 22: ...010 J3 6510019870 S CONNECTOR AXK5S40045P J4 6510021900 S CONNECTOR BM02B ASRS TF S1 2230001070 S SWITCH JPM1990 2711R S2 2230001070 S SWITCH JPM1990 2711R W12 7030003860 S JUMPER ERJ3GE JPW V W14 7030003860 S JUMPER ERJ3GE JPW V W15 7030000010 S JUMPER MCR10EZHJ JPW 000 W16 7030003860 S JUMPER ERJ3GE JPW V W17 7030003860 S JUMPER ERJ3GE JPW V EP1 6910012350 S BEAD MMZ1608Y 102BT EP2 0910052893 PC...

Page 23: ...duct Battery BP 200L ACC A5 USA A23 USA only 1 EP3 Optional product Chager BC 110A A5 USA A23 USA only 1 MP1 8930044450 1903 belt clip 1 MP2 8010011960 Strap belt HK 005 1 W1 8900009980 Cable OPC 967 ACC A23 USA only 1 ZP1 0800005690 Lazer case LC 147 ACC A23 USA only 1 7 1 Screw abbreviations PH Pan head FH Flat head NI Nickel ZK Black SECTION 7 MECHANICAL PARTS AND DISASSEMBLY 7 1 CABINET PARTS ...

Page 24: ...MP2 C MP6 C MP21 C MP21 C MP5 L MP4 L MP3 R MP7 R MP4 R MP9 R MP8 R MP6 R MP5 R J1 C MP2 L MP20 C MP16 C MP17 C MP28 C MP21 C MP11 C MP27 C MP4 C W1 C MP13 C MP14 C SP1 C MP1 C MP25 C MP21 C LOGIC UNIT RF UNIT Note C CHASSIS PARTS R RF UNIT L LOGIC UNIT IC A5 A23 chg 00 8 23 4 33 PM Page 7 2 ...

Page 25: ...H 3SK230 U1B U1B 2SK2974 K2974 DTB123EK T147 F12 DTC144EE TL 24 HAT1024R EL 1024 UMS1 TL S1 UN9115 6E UN9210 8L UN9211 8A UN9213 8C C1 C2 E B1 B2 XP1201 AI 2SC3357 RF RF 2SC4116 BL LL 2SC4211 6 TL L6 2SC4215 O QO 2SC4226 R25 R25 2SC4403 3 TL LY3 2SD1819A R LG 2SD2216 S Y 8 1 8 2 DIODES NAME SYMBOL INSIDE VIEW A C HVU17TRF E A C MA304 7R A C MA8024 2 4 MA8036 L 3_6 MA8051 H 5 1 MA8100 10 A C MA111 ...

Page 26: ... MR DOWN UP PWR SQL ANL BANK F 9 1 9 1 LOGIC UNIT TOP VIEW The combination of this page and the next page shows the unit layout in the same configuration as the actual P C Board SECTION 9 BOARD LAYOUTS IC A5 A23 chg 00 8 23 5 31 PM Page 9 1 ...

Page 27: ...ORON RSSI JACKDET VOLCK RFSTB SCK VOLDATA GND GND PTT EXTPTT LIGHT DASTB GND GND GND VREC GND BEEP MOD GND GND to RF unit J3 UP E DOWN CHANNEL CHASSIS S1 BOTTOM VIEW The combination of this page and the previous page shows the unit layout in the same configuration as the actual P C Board IC A5 A23 chg 00 8 23 5 29 PM Page 9 3 ...

Page 28: ...JACKDET VOLCK RFSTB SCK VOLDATA GND GND PTT EXTPTT LIGHT DASTB GND GND GND VREC GND BEEP MOD GND GND to RF unit J3 J1 DC IN 9 12 V CHG 1 2 P1 SP1 3 1 2 PTT LIGHT 1 2 3 MP1 2 7 6 1 4 5 9 2 RF UNIT TOP VIEW The combination of this page and the next page shows the unit layout in the same configuration as the actual P C Board IC A5 A23 chg 00 8 23 5 31 PM Page 9 5 ...

Page 29: ... 1 2 3 MP1 Battery BP 200L 9 9 6 V EXT SP MIC J2 BOTTOM VIEW The combination of this page and the previous page shows the unit layout in the same configuration as the actual P C Board IC A5 A23 chg 00 8 23 5 35 PM Page 9 7 ...

Page 30: ...32 Q2 2SC4116 LED DRV Q8 XP1201 LED DRV Q9 XP1201 LED DRV DS4 LT1EP53A Q7 2SB1132 Q8 2SC4211 TX CTRL D7 MA111 S5 POWER SW D4 DA112 D3 DAP202U INITIAL SET Q10 2SB1462 D14 MA2S111 PTT DET IC9 BA3308F MIC ANL AMP R41 IC8 BU4094BCFV SHIFT RESISTOR Q19 UN9210 VOR SW CMP BUFF AMP BPF BPF IC15 ISD1420SI VOICE REC PLAY Q11 XP4315 ALC CTRL Q15 XP4315 VOR CTRL Q25 2SB1132 Q26 UN9211 D23 MA133 D27 MA111 EXT ...

Page 31: ...NLK CHGC COM0 COM1 COM2 COM3 R2 100k R3 100k R4 100k C138 0 1 C139 0 1 C140 10 R1 47k C2 0 1 P76 P75 P74 P73 P72 P71 P70 INT0 RESET XCIN XCOUT XIN XOUT VSS P27 P26 P25 P24 P23 P22 P21 P20 P17 P16 P15 SEG39 P14 SEG38 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SEG38 SEG39 EDATA VOLCK SDATA DASTB VOLDATA SCK RFSTB UNLK UNLK KR0 KR1 KR2 KR3 MASTB RESET RESET DCC DCC KR4...

Page 32: ...111 3 3 C103 10 R74 220k R73 4 7k R75 56k R76 33k R79 6 8k C105 10 R81 1 8k C108 0 001 R80 150k C109 0 001 C106 0 001 R77 220k 0 R84 4 7k C113 0 1 R87 TBPS1S333K460H5Q R85 18k C112 0 1 R83 220k R78 4 7k R91 39k R88 33k R82 4 7k 1 2 3 4 5 6 7 8 9 10 11 12 13 14 R64 4 7k R63 15k R62 220k R61 47k C102 470p C115 0 1 C114 0 1 R66 220k 1 2 3 4 5 6 7 8 IC13 NJM2904V C125 10 R68 270k R67 10k C119 0 001 R8...

Page 33: ...8 22 R22 4 7k R20 10k IC16 S 81250SG QD Q6 UN9213 R98 1M 4 5 1 2 3 4 5 OUT VDD VSS CD NC C25 0 01 C26 47 R18 10k C22 0 001 R17 10k Q3 2SD2216 C20 0 001 C6 0 001 R16 100k R5 100k UNLK CHGC COM0 COM1 COM2 COM3 R2 100k R3 100k R4 100k C138 0 1 C139 0 1 C140 10 R1 47k C2 0 1 P76 P75 P74 P73 P72 P71 P70 INT0 RESET XCIN XCOUT XIN XOUT VSS P27 P26 P25 P24 P23 P22 P21 P20 P17 P16 P15 SEG39 P14 SEG38 26 27...

Page 34: ... EXTPTT EXTMIC STDET R160 47k 3 1 4 R162 100k C540 4 7 R163 100k R161 270k IC14 NJM2107F 5 2 R556 47k R550 100k C597 0 01 R158 22k WXC WXC EMBI AFC EMBI AFC SBATT VCC MOD BEEP 5V CHGC HV EMBI SBATT VCC CHGC HV UNLK VOLDATA JACKDET VOLCK EXTMIC EXTPTT VREC R159 100k R549 120k R28 100 C41 0 001 R29 15k R30 220 R31 33k R32 100 C37 10 R26 100k C38 0 001 C39 0 001 R25 1k R27 1k C40 8p R24 10k R23 10k R...

Page 35: ...C126 0 01 C195 100 R139 10 C181 0 1 C182 22p R140 180 C183 4 7 C196 0 001 C184 100 C185 4 7 R147 12k R145 10k R141 10k R146 10k R148 1k C340 100 R110 1k C140 0 001 R109 10k EXTSP EXTPTT EXTPTT EXTMIC STDET EXTMIC STDET C565 0 001 C567 0 001 C572 12p R107 150 R108 18 C130 100 C142 0 001 C143 0 001 C144 0 001 C145 0 001 C146 0 001 C141 0 001 SPE MICE R55 270k R56 TBPS1R154K475H5Q C58 7p C76 5p C75 3...

Page 36: ...7 0 001 C572 12p R107 150 R108 18 C130 100 C142 0 001 C143 0 001 C144 0 001 C145 0 001 C146 0 001 C141 0 001 SPE MICE R55 270k R56 TBPS1R154K475H5Q C58 7p C76 5p C75 33p R112 150 C171 0 001 R113 27k R111 10k C129 0 01 R106 100k R160 47k 3 1 4 R162 100k C540 4 7 R163 100k R161 270k IC14 NJM2107F 5 2 R556 47k R550 100k C597 0 01 R158 22k WXC WXC EMBI AFC EMBI AFC SBATT VCC VCC MOD BEEP 5V CHGC CHGC ...

Page 37: ...L http www icom france com Crta de Gracia a Manresa Km 14 750 08190 Sant Cugat del Valles Barcelona SPAIN Phone 93 590 26 70 Fax 93 589 04 46 URL http www icomspain 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 Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada ...

Page 38: ...Count on us iC a23 iC a5 ...

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