Icom iV86 Service Manual Addendum page 50

(Addendum page)
April 2020
• MAIN-A UNIT (for IC-G86) (3/3)
+5V
+5V
S5V
T5V
+3.3V
+3.3V
MAIN-A UNIT
VCC
VCC
(1/3)
MICIN
AFO
ATX
+5V
[MIC]
J700 EP700
MMZ1005Y102CT
EP701
MMZ1005Y102CT
MC700
1 4
VDD OUT
2 3
GND GND
SPU0410HR5H
Q704
DTC014YEB
RX:
Transceiver's PTT ON: 3.4 V
External PTT ON:
IC817
TLV9002IDGK
8
V+
V-
4
C814
1
Explanatory notes
TX Line
RX Line
Voltage Line
Battery + CP700 HV
HV
CP06S
Battery −
CP701
CP06S
+5V
C806
150P
R789
IC701
220k
1 14
GAIN1 IN
2 13
GAIN2 GAINSW
C745 3 12
DET INT
R725
1
4 11
OUT SENSE
39k 5 10
BUFFIN VREF
6 9
BUFFGAIN V+
7 8
BUFFOUT GND
NJM2783V
C741 R788 C798
Q703
DRA9123Y0
10k 1
270P
R726 R734 C747 R784
33k 39k 1 4.7k
RX: 0 V
Transceiver's PTT ON: 0 V
External PTT ON: 2.8 V
PTT
DET
R723
10k
0 V
Q721
LMUN5213DW1
0 V
MIC gain mic.1 mic.2 mic.3 mic.4
MIC1 3.3 V 0 V 3.3 V 0 V
When the squelch is closed: 3.3 V
Other than the above: 0 V MIC2 3.3 V 3.3 V 0 V 0 V
C703 R703
1 82k
C815 C702 R803 R702 C708
C744
AFVO
0.1 0.033 1.5k 5.6k 0.0039
0.027
R708
Electronic volume
33k
2 IC702
C711
1 1 8
VIN1 VIN2
3 2 7
1 VOUT1 VOUT2
IC817 3 6
GND VCC
TLV9002IDGK 4 5 VCL
DATA CLOCK
U2429G
VCC
The underlined parts have been updated from the previous version of the addendum, or from the original page.
+5V
+3.3V
VCC
VCC
VCC
Battery monitor
BATV
Q722
UT6401G
Q712
DTC014YEB
PWON
VCC
Transceiver power
ON: 3.3 V
Q723 D711 OFF: 0 V
RUM002N02
POSW
[ ]
RB751CM
S700
KEY
C799 R727 C807
MICIN
1 1.2k 1
L705
C809
10U
1
R733
150k
R735 C748 C750 C752
6
D705 C740
7
1k 1 0.1 0.1
5
L1SS400 1
IC817
TLV9002IDGK
R804
68k
C818
1
R795 R796
5
3
C802
4
33k 82k
R797
1
1
IC819
47k NJU7056F3
2
Q707
2SB1132G
R720
1k
Q725
RUM002N02
Q705
DTC014YEB
When the Power Save function is ON:
3.0 V
0 V
See the IC-V86/IC-U86 ADVANCED MANUAL
for the duty cycle.
Other than the above:
8-6a
TX : 4.9 V
5.0 V RX : 0 V
VCC +3.3V T5V S5V +5V
When the Power Save function is ON:
5.0 V
0 V
See the IC-V86/IC-U86 ADVANCED MANUAL for the duty cycle.
Other than the above: 0 V
IC818
1 5
VIN VOUT +5V
2
VSS S5V switch
3 4
NC CE
XC6701B502MR
+3.3 V DC/DC (3.376 V)
IC707
C769 L702
1 6
GND VBST
10U
2 5
SW EN 0.1
R767
3 4
VIN VFB
22k
TPS561201
R759
10k
5 V/3.3 V
When the squelch is closed: 3.3 V
Other than the above: 0 V
R729
100
IC706 Audio amplifier
ISD8102SYI
C819
1 8
Shutdown VOUTN
7
1 2
VREF GND
3 6
MODE VDD
R809 C817
4 5
VIN VOUTP
100 1
Q724
RUM002N02
MPZ1608S601A
R752
100k When an external speaker is:
Connected: 6.6 V
Not connected: 5.4 V
Q711
DTC014YEB
AF
R745
3.9k
When an external speaker is:
Connected: 1.0 V
Not connected: 0 V
0 V
+5V
+5V
S5V
T5V
+3.3V
+3.3V
VCC
VCC
POSW
7.5 V 3.4 V
PWON
CL
TXC
XPTT
VOXV
MAIN-A UNIT
(2/3)
S5C
+3.3V VCL
VDT
+5V
BEEP
AFON
RMUT
S5V
T5V switch
Q717
T5V
2SAR502UB
BATV
Q720
2SAR502UB
MIC1
MIC2
TXC
Q718
DTC014YEB
S5C
Q716
DTC014YEB
MP4
1 2
3 4
3620
EP702
J701