Icom iV86 Service Manual Addendum page 48

(Addendum page)
April 2020
• MAIN-A UNIT (for IC-G86) (1/3)
+5V
+5V
VCC
VCC
T5V
S5V
+3.3V
+3.3V
R4
VCC
ATSDA
ATSCK
0.15
MAIN-A UNIT
ATCTS
(2/3)
ATSQ
ATDTMF
TMUT
RFPWR
Q12
TEMP DTC014YEB
APCSW APCSW
R12
150k
At TX output power:
Extra high: 2.3 V
High: 1.9 V
Middle: 1.3 V
Low: 0.7 V
RFPWR
T5V
+5V
+5V
TX : 0.2 V
TX MUTE
RX : 3.3 V
Q2
DTC014YEB
TMUT
ATSQ
ATDTMF
ATCTS
+3.3V
ATSCK
ATSDA
L19
10U
13MHz TCXO
X2
R8
4
VCC OUT
1
GND GND
0
CR-1079
At TX output power:
C20
Extra high: 0.7 V
10P High: 0.5 V
R21 Middle: 0.3 V
Low: 0.1 V
470k
8
R10 R13
2 V+ IC1
GND NJM12904R
1
150k 18.0k
3 4
IC1
NJM12904R
At TX output power:
R28
C26 Extra high: 1.7 V
18.0k
High: 1.5 V
0.1
Middle: 1.4 V
R26
Low: 1.2 V
150k
Q10
6
RUM002N02
R30
APC 7 APCV
5
1k
R16
IC1
NJM12904R
150k
R14
33k
Q4 2.9 V
DTA014EEB
2.9 V
2.9 V
D12
+3.3V
L1SS400
CP5 CP6
1
CP06S CP06S AVDD
2
SCLK
3
SDIO
4
R24 47 IC3
R11 L22 C113 C114 AVDD
3 5
AT1846S
XTAL1
2 6
XTAL2
0 1U 0.001 150P
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.
+5V
+5V
VCC
VCC
T5V
S5V
+3.3V
+3.3V
TX : 3.0 V
RX : 0 V
TX : 7.1 V
TX : 1.0 V RX : 7.5 V
RX : 0 V DRIVER PA
Pre
Q7 Q9
RD01MUS2B RD08MUS2
DRIVER
C46 R42 C59
82P
100P 4.7
C38
33P
Q6
TX : 0.6 V 2SC5108
TX : 0.2 V
RX : 0 V
RX : 0 V
C124
2P
R33
47k
24
PDN
23
AVDD
22 CP4
PABIAS
21 CP06S
AVDD
20
NC
19
NC
18
RFOUT
17
NC
TX : 4.3 V
RX : 4.3 V
C52
Q8
2SC5108
47P
TX : 0.3 V
MP1
RX : 0.3 V TX : 0.8 V
RX : 1.0 V
4066
8-4a
TEMPERATURE
TX : 0.8 V
TX : 1.7 V
TX : 7.1 V
RX : 0 V
RX : 0 V
RX : 7.5 V
L9 C73 D6
5.8N 0.001 RN142SM
D13
C88
RN142SM
1P
Explanatory notes
TX Line
MP100
RX Line
OG-503040
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
+5V
+5V
VCC
VCC
T5V
S5V
MAIN-A UNIT
+3.3V
+3.3V (3/3)
MICIN
AFO
TEMP
MP5
4066
C125
C94
10P
7P