Icom iV86 Service Manual Addendum page 45

(Amended page)
April 2020
SECTION 8 VOLTAGE DIAGRAM
• MAIN UNIT (for IC-V86 and IC-V86-T) (1/3)
VCC
VCC
T5V
S5V
+3.3V
+3.3V
R4
ATSDA VCC
ATSCK
0.15
ATCTS
MAIN UNIT
ATSQ
(2/3)
ATDTMF
TMUT
RFPWR
TEMP
R10 R13
APCSW
150k 18.0k
R12 R28
150k 18.0k
At TX output power:
Extra high: 2.3 V
High: 1.9 V
Middle: 1.3 V
Low: 0.7 V
RFPWR
T5V
TX : 0.2 V
TX MUTE
RX : 3.3 V
Q2
DTC014YEB
TMUT
ATSQ
ATDTMF
ATCTS
+3.3V
+3.3V
ATSCK
ATSDA
L19
10U
13 MHz TCXO
X2
R8
4 3
VCC OUT
1 2
0
GND GND
CR-1079
C20
10P
R21
At TX output power:
470k Extra high: 0.7 V
High: 0.5 V
8
Middle: 0.3 V
2 V+ IC1
Low: 0.1 V
1 GND NJM12904R
3 4
IC1
NJM12904R
At TX output power:
C26 Extra high: 1.7 V
High: 1.5 V
0.1
Middle: 1.4 V
R26
Low: 1.2 V
150k
Q10
6 RUM002N02
R30
7 APCV
APC
5
1k
R16
IC1
NJM12904R
150k
R14
33k
Q4
2.9 V
DTA014EEB
2.9 V
D12
2.9 V
L1SS400
CP5 CP6
CP06S CP06S
1
AVDD
2
R24 SCLK
3
SDIO
4
47 IC3
R11 L22 C113 C114 AVDD
5
AT1846S
XTAL1
6
0 4.7U 0.001 33P
XTAL2
7
MODE
8
SENB
13 MHz
1.33 Vp-p
The underlined parts have been updated from the previous version of the addendum, or from the original page.
VCC
VCC
T5V
S5V
+3.3V
+3.3V
TX : 3.0 V
TX : 7.1 V
RX : 0 V
RX : 7.5 V
TX : 1.0 V
DRIVER PA
RX : 0 V
Pre
Q7 Q9
RD01MUS2B RD08MUS2
DRIVER
R42
C46 C59
100P 4.7 82P
C38
150P
Q6
2SC5108
TX : 0.6 V
TX : 0.2 V
RX : 0 V
RX : 0 V
C124
2P
R33
47k
24
PDN
23
AVDD
22 CP4
PABIAS
CP06S
21
AVDD
20
NC
19
NC
18 TX
RFOUT
17
NC
TX : 4.3 V
RX : 4.3 V
C52
RX
Q8
2SC5108
47P
TX : 0.3 V
MP1
TX : 0.8 V
RX : 0.3 V
RX : 1.0 V
4066
8-1a
TEMPERATURE
TX : 0.8 V
TX : 7.1 V TX : 1.7 V
RX : 0 V
RX : 7.5 V RX : 0 V
L9 D6
C73
5.8N 0.001 RN142SM
D13
C88
RN142SM
1P
Explanatory notes
TX Line
RX Line
Voltage Line
L13 C62 C75 C90
27N 22P 5P 10P
R55 R57
2.2k 2.2k
At RX frequency:
136.05 MHz: 0.8 V
146.05 MHz: 1.4 V
155.05 MHz: 1.9 V
173.95 MHz: 2.9 V
VCC
VCC
T5V
S5V
+3.3V
MAIN UNIT
+3.3V
(3/3)
MICIN
AFO
TEMP
MP5
4066
C94
12P