Icom IC-FR4000 Service Manual page 74

IC13
BU4066BCFV
C364
R353 R56
22p IC1D
4.7k 1M
NJM2902V
R3
390k
R64
C1 R2
2.0V C27 4.7k C28
1
100k 0.1
MIC 13 10
14
2.5V
R494 12
R355
C363
47k
R277 0.001 4.7k R469
100
R306 100k
IC1C
E MOD1 22k R58
R9
NJM2902V C395
C3 R8
1M
47k 0.1
10 47k
W2 C26 1
9
8
MICMUTE1
10 W14 R10
R7
MICMUTE3
10k R278 C362 4.7k
2.0V IC1B
22p
100k
NJM2902V
R13
C4 C25
R12 47k CP3
E MOD2
4.7 47k W15 1
6
7
5
R307 R14
560 4.7k
R279 C361
100k 0.001 TELMUTE1
CP4
MICMUTE2
R53
C371 R438
22 k
0.1
10
C23 R52
TELAFO 1 82k W16
4
2
1
3 R62 R63
R54 C24
1M 1M
4.7k 1
R280
R332 R331 C283 11
IC1A
100k
6.8k 4.7k
10 R60
NJM2902V
MICE
1M
A5V
R387
C332
10
0.1
IC7A
R506
4 2 NJM2902V
560
DISC OUT 1
3
R382
11
R385
4.7k
10k
C307
22p
IC9C
NJM2902V
R88
100k
R65
C451
2.0V
W18
10 100k
9
8
W19
10
R89 CP1
R323
100k 4.7k
DISC
DISC
TELAFO
TELEPHONE I/F
D28
1SS355
C343
0.01
T5
PLA10AS1030R7R2
RL1
C375
J13 1
D4
AC1
L1 D1UBA80
4
1
E
TELG
to FRONT 2
L2
UNIT J8 3
5 AC2
R131
27k
R486
C441
680
0.47
D5
AC1
D1UBA80
Q51
E
2SD1760
RL2
ATX209 [FR4100]
AC2
R528 10k
W8
[FR4100]
[FR4000]
D29
1SS355
R527
C346
15 [FR4100]
0.01
C453
R530 4.7
100 [FR4100] [FR4100]
Q52
2SC2712
[FR4100]
R529
4.7k
D38
PTZ13B
R143
R145
1.8k
C100 1.8k
10
C103
R144
D1 0.001 6.8k
PTZ36B
LOGIC UNIT
Power supply: DC13.6V / Mesurement Frequency: TX 465.500 MHz, RX 465.125 MHz / Internal resister of the volt meter: 50 kΩ/V
MIC MIX PRE-EMP IC2C HPF IC2B
NJM2902V NJM2902V
C408
C382
47p
IC2D
22p
R28
NJM2902V
680
R57
C7 R29
1M R16 C397 R5 C9 6
CP2 R6 7
0.1 3.9k
100k 0.1 15k 0.1
13 9 180k 5
14
8
12 10
C30 R15 C2 R26
C8 C10
R17
0.0022 R27
0.1 100k R40 0.1 15k 0.1
4.7k
R275
4.7k 5.6k
C287 R313
R341
100k
100k
R59 10 3.9k
1M R18
100k R312
R314
6.8k
4.7k
A5V
C31
1
SIGOUT
R55
100k
IC14
C33 TC4S66F
C34
1 R94
4 3 1
1M C87 R116
R19
C398 2
0.1
100k 47k
0.1 25TDTMFO
5 1
C126
R95
C32 C58 C88 R117
1M 10
0.1 0.1 150k
1
MBEEP
R470
100
C129 R179
0.1 150k
CWO
R61
C255 R269
1M
0.1
100k
DTMFO
C424
R436 C440
22p
0.1
10
R330
R91
4.7k
100k
R435
R522
6.8k
5 4.7k
1
4
R329 3
C296 R92
100k
10 A5V
IC6 4.7k
2
DE-EMP C311
C59 R90 NJM2107F
R350
HPF 0.1
100k
1 100
C43
0.0022
R68 R71
R75 220k C46
560 R347
470 100p
C42 R74 6.8k
R67
2.0V R70 4
C36 0.1 22k
13 6 2 R78 R79
5.6k 14 2.7k
7 1
0.1 68k 68k
12 5 3
C39 C40
C37 C38 11 R77
0.1 0.1
R66 0.1 0.1 4.7k C44
R69 R72
C45
8.2k 33k 39p
22k 560p
R325
R346 100k R348
R345
4.7k
1.2k
3.3k
C294
IC9D IC9B IC9A
10
NJM2902V NJM2902V NJM2902V
DISC
TELAFO
Q38
XP1214
4 3
2
5 1
R165
120k R166 R411
T6*
330k
2.2k
TELAFI
C117
0.1
C118
R524
C113
0.1
C115 C116 560 Q40
220p
0.47 100p
DTC144EE
R164
33k
IC49 R412
R489 R168 R466
R169
47k
1k 470 TLP121 1k
390k
R153
10k
C114 10
R150
R162
C347 DTSEL1
1.2k
R151 22k [FR4000]
0.1
47 27k [FR4100]
R493
T7* 5 4
C454
2.2k 6 3
C106 0.0033 R488
7 2
0.033 [FR4100] 2.2k
R149
8 1
1.2k
18 17 16 15 14 13 12 11 10
C112 R163 W7
0.1 1M IC50
TC4W53FU
R492
C420
1.8k DTMFO
R487 10
560 R476
C415
1 2 3 4 5 6 7 8 9
6.8k 0.1
R477
3.3k
C442
1 R473
R154 C110 T8* R415 5
100k 1
39 10 560
4
3
C107
IC46
22
2
BA6566F R474
33k
C412
C443
0.01 0.001
T6*, T7*, T8*
R414
C108 R158
ATS-007 [other] 2.2k
IC51
0.1
1.5k 12T01 [USA1], [USA3]
NJM2107F
R475
330k
R51
10k
C109
R155 R159
10
10k 1.5k
R160 R148
W13
1.5k
470k
IC48
TLP121
C111
220
C345
0.001
TELAFO
C383 22p C366
LIMIT S MIX
IC2A 22p
IC3A
NJM2902V IC3B
NJM2902V R23 330k R118
100k
NJM2902V
2.0V
C16
C5 R22
R25 C6 R119 68p
1 10k 4
2 4.7k 1 100k R33
R31
1 6
270 7 100k
3
5
4 R24 R115 82k
R30
C11 2
R315 11 4.7k
2.2k 1
0.1 R276 R317
3 100k
C302 R175 100k
10k 100k
C13
10
R32 11 82p
22k
C303 R504
R318
0.1
R342 100k A5V
R316 1.8k C289
R339
3.9k
6.8k 10
R340 10
R496
10
2.2k
4 J14
SQLG
1
SQLVRO
2
CP5
SQLVRI
3
IC3D
CP6
C373
R495
NJM2902V 5
13
0.018 14
100k
9
12 3 J15
8
10 C85 R114 R172 AFVRI
C84 1
R441 R442 1
39k 100k AFG
C372 0.001
R443 33k 33k 2
IC52
100k 68p C124 4
TX-SIGNAL FIL
0.1
NJM2520V
IC3C 4 J16
C425
5 4
SPG
NJM2902V 0.1 NC VIN2
2
6 SW1 3 AFMUTE2
AFVRO
V+
7 1
VIN1 2
VOUT
8 NC 1
3
R505 C125 GND
0.1
10
AFVRO
A5V
R349
C310 R141
C99 R139
100 LPF
0.1
10k 0.1 33k
IC10C
IC10B
NJM2902V
NJM2902V
R140 SPG
C50
C47
C49 10k
150p
820p C54
220p R84 R85
4
2 0.1 10k 10k
R80 R83 6 9 C53 R130
R82 2.0V
1 7 8
68k 68k 1 33k
3 68k 5
10
C94
R87 R86 10
C48 11 R81 R327 R305
4.7k
4.7k 4.7k 33k
220p 100k C340
C51 C52
1
15p 150p R138 C98
R326 C295
IC10A
10k 0.1
6.8k
10 R328
NJM2902V
CP14
4.7k
R137
13 IC10D 10k
14
NJM2902V
12
DTMFO
IC7B
DISC
NJM2902V
C421
22p
TELAFO R390
47k
IC11
AF OUT
TA78L05F 7
L9V
O I
R266 C335
R389
G 1k 4.7 C422
4.7k
C389 C288 22p
0.01 C290 10
R397
10
47k
C337
HOOKC 10
AF OUT1 8
OFFHOOK: ''H''
R396
ONHOOK: ''L''
4.7k IC7C
NJM2902V
C62 C63
IC47 0.0047 0.0039
LC73701M
DTSEL1
R96 R97 R98
TELBMR
120k 470k
470k
R451 C390
100k 0.1
C61 C64
10 GND 9 C60
VDD 0.015 0.001
11 OSCO 8 0.015
BMR
12 7
R531 10 [FR4000]
NC OSCI
10k [FR4100] 13 BUSYOUT 6 TELBUSY
TEST
DTMF
14 RES 5
DTMF
15
4 SDTO
MUTE2 DATA
MUTE 16 3
MUTE NC
17 2 SCK
CK
MUTE1
DP 18 1
TELSTB
DP CE
C457
0.22 [FR4100] DTMFO
C414
IC45
C271
1
LMC567CM
0.047
C416
C419
0.1
1 0.01
8
OUT FIL OUT R289 R290 R291
2
7
47k
LOOPFIL GND 68k 68k
3
6
IN CT
4
5
R481
C413 VS RT
68k [FR4000] C270
0.1
0.022 C272
82k [FR4100]
C417 0.0012
R478
0.1
4.7k R479
6.8k [FR4000]
2.2k [FR4100]
R480
10k
ONHOOK
C399
RING
0.1
TELAFO
RING ON TERM: ''L'' DISC
RING OFF TERM: ''H''
ONHOOK SIGNAL ON TERM: ''L''
C418
ONHOOK SIGNAL OFF TERM: ''H''
0.1
TELAFO
A5V
L9V
IC4A IC4C
SPLATTER FILTER
NJM2902V NJM2902V
5.0V
1.9V
C15 C409
C18 C17
680p 4 0.0022
120p 680p
2 6 9 TXAF
7
1 8
3 5 10 C428
0.1
R34 R35 R36 R37 R471 R472 SQLVRO
11
100k IC4B 100k
100k C301 100k 100k 100k C411
SQLVRI
10
C12 C14 NJM2902V 100p
C20
560p 220p
C429
330p
R338 0.1
10
A5V A5V
SQLVRO
SQLVRI
SQLG
TX-TONE FIL
SQLG
CP1 SQL R320 IC4D
CP2
47k
NJM2902V
2.5V
J1
9
R2
SQLI C90 R127
10kB
7
R121 R122 0.1 R124 13
SQLO 5.6k
CP3 14 I TONE
6 39k 47k
SQLG 150k
12
5
AFVRI
4 W1 [4100] R123
AFG R521 C92
3 C89 47k
47k
AFG R1 0.0033
CP4 0.018
2 C91
AFVRO
10kA
1 820p Q1 XP1214
C93
CP6 CP5 VR
8 0.47 4 3
VOL
UNIT 2
W2 [4100]
5 1
IC16
MUTE: 0.0V
TC4W53FU UN MUTE: 5.0V
5.0V C/DSW
C407 IC17
0.1
IC26B
LA4425A
NJM2904V
C384
R171 VOL Min: 13.2V
R128 8 7 6 5 C323
0.1
100k VOL Max: 12.5V
100k 1 5
R523 7
R457
10 6
560 R129
R367
1 2 3 4 10 VCC2 CP9
4.7k
R170
C96 R368
C95
100k C123
0.1 47k
0.1 5 470 C432
1
4
SP 22p
2
C97
3 13.6V
470
SPG SPG
C455 C456
100p 0.001
W21
[FR4100] [FR4100]
CP18
[FR4100] CP16
CP17
R386 R356
4.7k 6.8k
A5V
C330
CP10
10
Q37
R391 C396
47k 1 CP11
6 DTC144EE
5 TELMUTE2
C423
R392
22p
100k
CP12
R398 C341 C342
R405
CP13 R404
0.1 C339
47k 1 100k R408
13 47k
9 0.1
10k TELAFI
14
10 12
R409
R403
R399 R407
IC7D
4.7k 10k
100k R352 100k
NJM2902V
100
IC8C
C449 C313 IC8D
1 0.1
NJM2902V
NJM2902V
C70
0.0015
C71 R104
C67
C66 390k
330p 0.033
C308 R103
0.012
4
2 6 1 100k 13
9
R99 R100
1 7
8 14
3 470k 470k 5 12
10
11 IC8A R101 R102
R105
IC8B
470k 470k R321
NJM2902V 4.7k
100k
C68 NJM2902V C72
220p 56p
R322
6.8k
C292
10
R334
4.7k
A5V
R351
C312
100 IC12C TELAFI
0.1
NJM2902V
C448
R520 R519
C447
R294 C276 2.2 33k 150k
1
82k
0.0012
R293 R295 2.0V
4 82k 56k
2 13
9
R297
8 14
1
33k
3 12
C282 10
1
R292 R300
C274 C275
11
4.7k 4.7k
0.033 0.033
IC12D
R336
R335 C277
100k
NJM2902V
4.7k 0.01
C273
0.0015
R337
IC12A C297
6.8k
10
NJM2902V
C56 R177 C128 R526
0.1 47k 0.01 100k 5 4
1
6 3 2 INPUT
7 2 3 NC
C127
4 PD
8 1
0.022
5 OSCO
6 OSCI
7 NC
R464 C388
IC30 X1 VSS LOADB
100 0.1 CR-733
TC4W53FU
4.194304 MHz
12 - 5
R453 10
C380
2.5V
R497
0.1
4.7k
C427
R500 R501 R503 220p
R498 C426 100k 47k 100k
4.7k 10
IC20
TC4W53FU
8 7 6 5 8 7 6 5
IC21
TC4W53FU
C430
0.1
1 2 3 4 1 2 3 4
IC25
C431 CP7
M62364FP
0.1
R452 1 24
SQL
VIN1 VIN8
4.7
2 23
VOUT1 VOUT8
22
3
C322 VOUT2 VOUT7
4 21
0.1
VIN2 VIN7
5 20
VDD GND
DA2STB 6 19
A5V
LD RESET
SCK 7 18
CLK VDAREF
SDTO 8 17
DI DO
AFATTI 9 16
VIN3 VIN6
AFATTO 10 15 TUNE
VOUT3 VOUT6
11 14 RVCON
VOUT4 VOUT5
12 13
VIN4 VIN5
A5V
C326
R376 R358 R370
0.1
6.8k 2.2k 2.2k
R369
IC26A R372
R50
100k
10
8 3
47k NJM2904V
1
C329 2 R375
C325
R373
10 100k
4 10
4.7k
R48 CP8
E DTCS
R371
47k
R359
47k C328 10
560
E MOD3
VCC2
GND2
DISC
AUDO
A5V
AUDI
IC28
D33
NJM2107F
MA2S111
R282
330k
D27
MA2S111 5
1
R281
4
100k
3
2 R283
10k
C261 C260
R284
C386
C74 1.5 1
150k
4.7
4.7
C316 C266 IC29
1
1
FX805LG
21 20 19 18 17 16
R285 Explanatory notes
150k
22 15
Voltage line
RXAMP O
NOTONE
23 14
WAKE RXAMP I+
TX line
24 13
VDD RXAMP I
1 12
R463
5.0V C265 XTAL VSS
47
10 R304 2 11 RX line
XTAL/CLK AUD O
1M
C264 3 10
ADDR SELECT AUD I
0.001
C452
X3
4 5 6 7 8 9 1
CR-505
4 MHz
C263
33p
C262
4.1V
33p
DTCSI 12.4ms DTCSI
IC12B
NJM2902V
C76 R108
R107 2.0V
0.1 180k 1M
DTSEL2
R112 W20
6
R109 25TI
IC31 R106 1k
7
DISC 220k 100k 5
14 LC7387M
VDD 13
C80
NC 12
0.047
C77
EST 11 DTSTD
C78
820p
STD 10 DTACK 150p
ACK 9 DTMFD
SD 8
R113
100k
C83
0.1
L9V
DISC
A
A5V
B
C
D
VCC2
GND2
SP, SPG
E
C/DSW
F
G
H
I
L9V