Icom iV86, Service Manual Addendum

Page: 50 / 78

8-6a
The underlined parts have been updated from the previous version of the addendum, or from the original page.
April
2020
(Addendum page)
• MAIN-A UNIT (for IC-G86) (3/3)
T5V switch
+3.3 V DC/DC (3.376 V)
S5V switch
Battery monitor
5 V/3.3 V
PTT
DET
[MIC]
Battery −
B
Audio amplifier
AF
Electronic volume
Explanatory notes
RX Line
TX Line
Voltage Line
MAIN-A UNIT
(1/3)
MAIN-A UNIT
(2/3)
[ ]
3.4 V 7.5 V 5.0 V
TX : 4.9 V
RX : 0 V
5.0 V
0 V
When the Power Save function is ON:
See the IC-V86/IC-U86 ADVANCED MANUAL for the duty cycle.
Other than the above: 0 V
When the squelch is closed: 3.3 V
Other than the above: 0 V
When an external speaker is:
Connected: 6.6 V
Not connected: 5.4 V
When an external speaker is:
Connected: 1.0 V
Not connected: 0 V
3.0 V
0 V
When the Power Save function is ON:
See the IC-V86/IC-U86 ADVANCED MANUAL
for the duty cycle.
Other than the above: 0 V
MIC gain
MIC1
MIC2
mic.1
3.3 V
3.3 V
mic.2
0 V
3.3 V
mic.3
3.3 V
0 V
mic.4
0 V
0 V
When the squelch is closed: 3.3 V
Other than the above: 0 V
RX: 0 V
Transceiver’s PTT ON: 0 V
External PTT ON: 2.8 V
RX: 0 V
Transceiver’s PTT ON: 3.4 V
External PTT ON: 0 V
Transceiver power
ON: 3.3 V
OFF: 0 V
TPS561201
IC707
1
GND
2
SW
3
VIN
4
VFB
5
EN
6
VBST
DTC014YEB
Q718
DTC014YEB
Q716
+5V
S5V
T5V
+3.3V
T5V
+5V
+3.3V
S5V
MMZ1005Y102CT
EP701
MMZ1005Y102CT
EP700
+3.3V T5V S5V +5V
0.1
C769
3.90k
R762
2.7k R763
22k
R767
1
C700
10k
R759
1k
R773
1k
R781
47k
R780
47k
R771
0.1
C750
100k R724
1
C731
1
C748
L1SS400
D706
15k
R750
15k
R742
L1SS400
D705
1
C740
1k
R735
150k
R733
0.1
C752
27k
R712
47k
R713
DRA9123Y0
Q703
4.7k
R784
0.1
C710
SPU0410HR5H
MC700
1
VDD
2
GND
3
GND
4
OUT
DTC014YEB
Q704
33k
R715
1
C724
270P
C741
39k
R725
1
C747
39k
R734
100k R787
LMUN5213DW1
Q721
1 2 3
4 5 6
1.5k R785
560
R786
J700
0.1
C800
2SAR502UB
Q717
2SAR502UB
Q720
TLV9002IDGK
IC817
6
5
7
CP06S
CP701
CP06S
CP700
0.1
C756
RCLAMP1521P
D700
RB751CM
D711
RB751CM
D714
DTC014YEB
Q712
UT6401G
Q722
1 2 3
4 5 6
KEY
S700
1
C794
VCC VCC
VCC
XC6701B502MR
IC818
1
VIN
2
VSS
3
NC
4
CE
5
VOUT
1
C792
1
C793
1
C768
470
R706
39k
R740
15.0k
R746
10U
L702
10U
L705
100k R790
100k R791
1
C798
RUM002N02
Q723
L1SS400
D717
1M
R799
1M
R800
33k
R726
10k
R723
NJM2783V
IC701
1
GAIN1
2
GAIN2
3
DET
4
OUT
5
BUFFIN
6
BUFFGAIN
7
BUFFOUT
8
GND
9
V+
10
VREF
11
SENSE
12
INT
13
GAINSW
14
IN
10k
R732
10k
R788
1.2k
R727
1k
R728
1
C799
1
C807
1
C738
1
C745
220k
R789
0.1
C734
1
C808
MMZ1005S601CT
EP703
150P
C806
1
C809
0.1
C805
1
C810
10
C811
1.5k R801
1
C812
0.1
C726
33k
R708
L1SS400
D719
100
R729
1M
R811
1k
R731
DMC506010R Q706
1 2 3
4 5 6
47k
R808
ISD8102SYI
IC706
1
Shutdown
2
VREF
3
MODE
4
VIN
5
VOUTP
6
VDD
7
GND
8
VOUTN
9
220
C767
1
C749
47k
R721
47k
R704
100k R753
100k R805
U2429G
IC702
1
VIN1
2
VOUT1
3
GND
4
DATA
5
CLOCK
6
VCC
7
VOUT2
8
VIN2
1M
R812
TLV9002IDGK
IC817
2
3
1
0.1
C815
1
C735
15k
R739
82k
R796
NJU7056F3
IC819
1
2
3
4
5
0.027
C744
47P
C774
10k
R717
68k
R804
47k
R797
1k
R738
1
C802
1
C814
0.1
C755
0.0015
C813
100k R810
1M
R806
0.0039
C708
100k
R752
150P C803
1.5k
R803
0.1
C753
L1SS400
D708
1k
R765
1
C703
1
C804
47k
R798
5.6k
R702
DTC014YEB
Q705
1
C819
1
C818
1
C707
0.033
C702
33k
R795
3.9k
R745
DTC014YEB
Q711
0.001
C772
TLV9002IDGK
IC817
V-
4
V+
8
100k R751
1
C817
82k
R703
RUM002N02
Q724
J701
1k
R720
MPZ1608S601A
EP702
100
R809
10k
R716
RUM002N02
Q725
47k
R705
TC7S66FU IC820
1 2 3
4 5
1
C711
0.01 C742
1M
R807
0.1
C820
2SB1132G
Q707
10
C759
MMZ1005Y102CT
EP704
270P C784
22
C760
22
C777
3620
MP4
1 2
3 4
BATV
S5C
BEEP
BATV
S5C
TXC
CL
PWON
VDT
AFON
VCL
XPTT
VOXV
MICIN
AFO
ATX
POSW
TXC
VOXV MIC2 MIC1
MIC1
MIC2
PWON
POSW
MICIN
+5V
+5V
ATX XPTT
VCC
VCC
RMUT
+3.3V
HV
S5V
CL
RMUT
VDT
AFVO
VCL
VCL AFO
BEEP AFON
T5V
VCC
VCC
HV
+5V
VCC
+3.3V
+5V
VCC
+3.3V
+5V
VCC
VCC
+3.3V
+3.3V
+5V
VCC
+3.3V
+5V
+5V
+5V