Icom IC-F4001 Service Manual page 29

SECTION 10. VOLTAGE DIAGRAM
MAIN-A UNIT (1/2)
R301
C301
DISC
0.1 15k
C TCSS/DTCS FILTER
S5V
R310
DISC
R351
22k
18k
C329
0.0047
R355 IC59
C328
6
C330 C331
B 7
1
10k
5
0.01 0.01
LM2902PWR
VREF
+5V +5V
RMUT 1
J51
R361
470
MMZ1005Y102CT
R366 R368 R369
150k 270k 150k
MC51
R359
8.2k
EM9745P
R363
470
Q58
UNR911HG0
SW-149
Q59
LDTC144EE
IPTT
KEY1
KEY2
CL
8
VO-
7
GND SHUTDOWN
6
C393 SE/BTL
5
VO+ BYPASS
220
J52 TPA0211DGN
J53
1
2
F51
CP5
R421
CP06S 12
ERBSE3R00U
S54
TP76N00N
2 1
C1 A1
3
B1
5 4
C2 A2
6
B2
8 7
C3 A3
9
B3
TP70TF5169
*: Refer to the PARTS LIST for the value and name of component.
R303
56k
IC60
R302
6
1.5k
B 7 SDEC
12k
5
R304
NJM12902V
VREF
R314
R313 390k
C304
10
3.3k
C307
0.1
R321
4 3 S5V
R311 R312
15k
5
2
R316 R322
22k 22k
CENC0
1
6
470 180k
R323
Q51 CENC1
R317 R318
XP4601 CDEC
56k
6.8k 10k R324 R326
CENC2
C333
22k 47k
0.0047
NJM12902V
C332 IC58
6
B
7
0.0047
5
IC62 DUS E
14 1
VDD I/O1
13 2
CONT1 O /I1
12 3
CONT4 O /I2
11 4
I /O4 I/O 2
10 5 M MUT
O/I4 CONT2
9 6
O/I3 CONT3 R341
8 7 SENC
I /O3 VSS
68k
CD4066BPWR
C380
47P
C347
RX
R370
0.01
470k
IC60
IC58
C346 C348
2 9
A 1 C 8
0.039 0.039 R375
C349
3 10
0.1
NJM12902V 470
NJM12902V
VREF VREF
VREF
R428 R429
1.5k 390k
9 IC60
D53
C 8 VOXV NJM12902V
C381 C382
10 S5V IC58
L1SS400
0.018 0.018
NJM12902V
GND
11
S5C
CPU5 CPU5
EPTT EPTT
ATX ATX
R5V
Q84 Q85
R440
LDTC144EE LDTC144EE AFON
390
R5C
R441
+5V
10k
IPTT
T5V
KEY1
KEY2
CL T5C
R412
C403
IC55 AFO
1
IN 0.1 4.7k
2 R413 100k AFON
3 +5V
VDD
4
Q63
2SB1132 VCC
R442
D55
Q74
330 L1SS400
XP6501 R414
BATV
330k
Q64
Q75
+5V
HV
AFVI
Q76
PWON
CBI0 LDTC144EE
CBI3
CBI2
CBI1
10 - 1
IC59
2
R329
C356
A 1
R327 R328
3
4.7k 10
47k 47k
LM2902PWR
Q52
LDTC144EE
IC59 IC59
13 9
D 14 C 8
R342 R343 R344 R345
12 10
68k 68k 68k 68k
LM2902PWR LM2902PWR
R374
3.9k
IC56
1 14
I/O1 VDD
2 13
R377 O /I1 CONT1
3 12
R379 O /I2 CONT4
4 11
33k I/O2 I /O4
5 10
C350 CONT2 O/I4
270k
6 9
CONT3 O/I3
7 8
0.0012
VSS I /O3
IC58
13
CD4066BPWR
D 14
12
NJM12902V
LM2902PWR Q71
KTA2015
IC59
4 4
V+ V+
GND
11
R432
4.7k
2SA1586
Q72
R434
10k
KTA2015
Q73
R436
4.7k
NJM12902V
IC60 CDEC
4 STONE
V+ RES
GND
11 IC53
1 5
CPU5
CD VDD
2
VSS
3 4
MR VOUT
2SB1132
NJU7704F3
R456 10k
R451
10
CR-864
R454
C453
X51
22P
22k
XP6501
IC54
1 5
CTRL VIN R455
2
GND
3 4
NB VOUT
12k
NJM2871BF05
CPU5
CP05S
CP6
CP05S
CP7
CP05S
CP8
CP05S
CP9
CP05S
CP10
CP05S
CP12
CP05S
CP11
IC57 R2A20178
REF
25
7 24
VOUT3 VOUT2
8 23
VOUT4 VOUT1
9 22
VIN4 VIN1
10 21
VIN5 VIN8
11 20
VOUT5 VOUT8
12 19
BAL
VOUT6 VOUT7
+5V
VREF
R381 R385
270k 120k
R382
C326
R386 IC58
2
0.01
470k R387
A 1
R383
33k
3
1.5k
560k
NJM12902V
R384
100k
C358
0.1
R473 100k
UNR9210G0
Q81
CLO
C460
0.1
R471
C461
0.1
15k
C462 R472 R474
0.1
100k 15k
ADSW
1 P25/SCK3_2 48
PB6/AN6/DA0
2 P23/TRCOI 47
PB7/AN7/DA1
3 46
P22/TXD
AVCC
4 45
P21/RXD
X2
5 44
P20/SCK3
X1
6 IC51 43
P87/TREO
AVSS
7 R4F20102NFA 42
P86/TRBO
RES
8 41
P85/TRAIO
TEST
9 40
P67/FTIOD1
VSS
10 P66/FTIOC1 39
PJ1/OSC2
11 P65/FTIOB1 38
PJ0/OSC1
12 P64/FTIOA1 37
VCC
CSFT 13 P60/FTIOA0 36
P37/TXD_3
14 NMI 35
P36_RXD_3
15 P61/FTIOB0 34
P35/SCK3_3
16 P62/FTIOC0 33
P34/FTCI
R463
10k
100k
CPU5
R464
8
VCC
7
WP
6
SCL
5
SDA
R460
R1EX24016ATA00A
100k
HV
HV
+5V
+5V
S5V
R396 S5V
C365
R5V
47P
270k R5V
R397
T5V
T5V
180k
R5C
IC60 R5C
13
SO
SO
D 14
VCON
R398
12
SCK
SCK
10k
PLST
PLST
NJM12902V
NWC
NW C
TMUT
TMUT
MOD
MOD
VCON
VCON
SQIN
SQIN
LVA
LVA
T1
T1
T2
T2
LVIN
LVIN
TEMP
TEMP
RSSI
RSSI
D ISC
DISC
NOIS
NOIS
UNLK
UNLK
LDTA144EE
Q82
DS51
R469
RLED YG
390
Q83
R468
TLED HR
CL-165HR
1.8k
LDTA144EE
MGC1
MGC0
R466
R467
100k
100k DUS E
CBI3
CBI2
CBI1
CBI0
CENC0
CENC1
CENC2
IPTT
IC52
1
A0
2
A1
3
A2
4
VSS