Icom IC-M400BB Service Manual page 13

(Additional page)
July 2013
SECTION 10. VOLTAGE DIAGRAM
• MAIN UNIT (1/2)
C911
47
C912
0.1
C913
0.1
C914
C915 0.1
0.0033
1
C916 R906
2
3
0.033 680
4
5
X901
6
7
IC902
8
LC70301W
9
10
11
CSTCE8M19G55 12
13
14
C921
15
16
0.1
C922
0.1
C923
0.1
C924
C919 10
0.1
A3V
C925
D3V
10
LMV321IDCK
IC905
R923 R924
82K 33K
HV
R708
WX Alert
KTC4075 47
Q701
R703 R704 R705
10K 10K 10K
R707
C706
C701
C703
MAINDET
0.01
10K
0.022
0.1
R718
CH70 DSC
KTC4075 47
Q702
R713 R714 R715
10K 10K 10K
R717
C711 C716
CH70DET
C713
0.1 10K 0.01 To DC POWER
0.022
CP21
CP15S
CP22
CP15S
IC801
1 STR 16
IOSTBO
V+
SDATAO 2 D 15
OE
SCKO 3 CLK 14
Q5
DETSEL 4 Q1 13
Q6
5 Q2 12
NC_AFS ICINTS
Q7
HORNC 6 Q3 11 ICEXTS
Q8
ICPAS 7 Q4 10
Q'S
8 GND 9
QS
CD4094BPWR
IC802
1 STR 16
V+
2 D 15
OE
SCKO 3 CLK 14
Q5
NC_RESETB 4 Q1 13
Q6
NC_PDN_PTT 5 Q2 12 ADJMIC
Q7
6 Q3 11
PAINM
Q8
PASTBY 7 Q4 10
Q'S
8 GND 9
QS
CD4094BPWR
IC901
1 COM 8 3V
VCC
2 INH 7
CH0
3 VEE 6
CH1
4 GND 5 NC_AFS
A
TC7W53FK
NC_PDN_PTT
NC_RESETB
C535 R561 C536
0.22 8.2k 0.027
R902
100K
R562
48
1.8K
47
R911
46 SDATAO
45 10K R912 SCKO
44
10K
43
C917 0.1
42
41 NC_BUSYO
40
C918 L901
39 D1V
38
22U
37 0.1 LDTC144EE
36 Q506
35
34
C903
33 IC903
1 CTRL 5
IC504
0.1 VIN
2 GND 1 I/O1
C904
3 NB 4 2 O/I1
VOUT CONT1
3 O/I2
CONT4
0.1
4 I/O2
NJM2847F3
C905
5 CONT2
6 CONT3
0.1
7 VSS
C906
CD4066BPWR
0.1
IC505 TC7S66FU
5 1
R921
2
IC904 4 3
1
1 COM 8
VCC
2 INH 7
5 CH0 R571
1 3 VEE 6 MICO
CH1
4 4 GND 5
A
100K
3
TC7W53FK
2
R905
1
5V
RX:5.02V 3.28V
TX:4.97V IC511
1 VIN 5 3V
VOUT
2 GND
3 CTRL 4
NC
NJU7772F33
RX:11.99V
TX:11.64V
IC512 KIA7805API
5V VCC
O I
COM
VCC
LDTC144EE
Q511
Q512
R601
TPC6111
100K
R602
VCC
47K
HV
3V
SP-
SP+
J2
1
3
5
VCC
7
IMICS L5V
9
EMICS TEMPV
11
MIC-G
13
TDETV
15
WDECV
17
DSCDEC
19
BEEPO
21
HORNO
23
TXMSO
25
RVSO
27
PONO
29
DASTBO
31
IOSTBO
33
ICF3
35
HL COMTXD
37
ATT COMRXD
39
AFINM
*: Refer to the PARTS LIST for the value and name of component.
12
R559 R555 R550
10 18K 22K
R569 C531
R552
0 2.2
C537 10
IC506
0.027
8 7
9 6
R563 R564
10 5
11 4
C541 150K 18K
12 3
R529
13 2
1 R565 R566 33K
14 1
LMV324IPW
1.5K 3.3K
3V
VBIAS
C560
2.2
IC503
14 1 I/O1 14
VDD VDD
13 2 O/I1 13 REXTMO
CONT1
12 3 O/I2 12 ICEXTS
CONT4
11 4 I/O2 11
I/O4 I/O4
10 5 CONT2 10
O/I4 O/I4
9 6 CONT3 9
O/I3 O/I3
8 7 VSS 8
I/O3 I/O3
R547
CD4066BPWR
220K R582
R585 10
68K
5V
MIC-IN
3V
MOD
R627
VBIAS
22K
R624 R625 R628
82K 68K 27K
IC513
8 7
9 6
10 5
11 4
12 3
13 2
R641 R647
14 1
LMV324IPW
10K 15K
HV
VCC
SP-
SP+
VBIAS
2
4
HV
6
8
GND
10
MIC-IN BEEPO
12
LOINV
14
NOISEV AFINM
16
UNLKI
18
DSCENC
20
22
NC_BUSYO
24
T5VSO
26
PLSTBO
28
SCKO
30
SDATAO
32 R737
RXSPMO
34
REXTMO
36
27K
RINTMO
38
40
RX:11.99V
TX:11.64V 2SB1143
Q501
R526
KTC811U
1M
Q502
R528 C521
10 C523 R531 C522
1
3.3K
0.22 0.22
3V
MICG
IC502
1 I/O1 14 ICF3
VDD
2 O/I1 13
CONT1
3 O/I2 12 COMRXD
CONT4
4 I/O2 11
I/O4
EMICS 5 CONT2 10 AFMIC COMTXD
O/I4
6 CONT3 9
O/I3
7 VSS 8
I/O3
CD4066BPWR
3V
Q504
PTTC
Q503
LDTA144EE 2SK880
LDTC144EE
LOINV
Q505
MOD
3V
PCON
R661
470
R626 R630 C651 R635
1K 220K 0.01 1.5K
IC514
MICO
13 VIN5
MSENS
14 VOUT5
15 VOUT6
16 VIN6
17 DO
18 VDAREF
19 RESET
20 GND
21 VIN7
22 VOUT7
23 VOUT8
PAVOLI
24 VIN8
M62364FP
IC515
1 8
2 7 R676
R633
3 6
4 5
470K
27k
LMV358IPW
R735
AFVOLO
IC701
15K
LA4625
R758
10K
C744 EP701 R761 C772
MMZ1005S601CT
2.7 0.1
0.1
R762
C773
2.7 0.1
IC702
1 8
C753
2 7
R763 C782
3 6
0.1
4 5
MMZ1005S601CT 2.7 0.1
R764 C783
LMV358IPW
C752 R751
2.7 0.1
R753
R740 15K
22K 0.1
PAVOLO
47K
HV
RX:11.99V
TX:11.64V
VCC-C
J1
1 2
PTTC COMTXD
3 4
ICF3 COMRXD
5 6
GND GND
7 8
MICG AF/MIC
9 10
C513
R512
2.2 2.7
R513
2.7 R514
2.7 R515
2.7
EZJP0V080DA
LV
R662
MODC
390
MAINDET
VIN4
VOUT4 12 SQL
VOUT3 11
R664
VIN3 10
DI 9
SDATAO
CLK 8 SCKO
LD 7 DASTBO
VDD 6
VIN2 5
470
VOUT2 4 FCON
VOUT1 3 AFVOLO
VIN1 2
1
PAVOLO
AFVOLI
J3
PA+
MPZ1608S101A 1
PA-
EP703 2
SP+
3
SP-
4
MPZ1608S101A EP704
MPZ1608S101A
EP705
MPZ1608S101AEP706