Icom iV86 Service Manual Addendum page 75

• MAIN UNIT (2/3)
VCC
+5V
S5V
T5V
+3.3V
Backlight
POSW
ON : 3.5 V
DS401
OFF : 4.6 V
PWON
LIGT HT-191UYG
CL
Q400
Backlight
2SC4116
TXC Backlight
ON : 1.5 V
OFF : 0 V ON : 0.8 V
XPTT
OFF : 0 V
VOXV
MAIN UNIT
(3/3)
S5C
VCL
VDT
BEEP
DS400
AFON GP11538A6
RMUT
ATX
BATV
MIC1
MIC2
IPTT
S401
TAFG-12W
[PTT]
S400
ED08902OFK150S070C
DIUD
DN
[VOL]
E
DICK
UP
KR0
[1]•[TONE] [2]•[VOX]
S402 S406
KEY KEY
KR1
[4]•[DUP] [5]•[SCAN]
S403 S407
KEY KEY
KR2
[7]•[PRIO] [8]•[SET]
S404 S408
KEY KEY
KR3
[ * ]•[FUNC] [0]•[DTMF-M]
S405 S409
KEY KEY
*D400 BAND1
*D401 BAND2
*D402 FREQ1
ISO2 *D403 FREQ2
*D404 EXHI
*D405 TXFREE
*D406 RXFREE
ISO1 *D407 COMEXP
DS402
HT-191UYG
+3.3V
+3.3V +3.3V
IC400
BR24G128NUX
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
EEPROM 16 kbyte
[3]•[T.SCAN] [MONI]
S410 S418
KEY KEY
[6]•[SKIP] [▲]
S411 S415
KEY KEY
[9]•[H/M/L] [▼]
S412 S416
KEY KEY
[# ENT]•[ ] [VFO/MR/CALL]
S413 S417
KEY KEY
VCC
+5V
S5V
T5V
+3.3V
SWDIO
SWCLK
NRST
BOOT0
FLTXD
FLRXD
12.288 MHz
ESCL
ESDA
DICK
DIUD
POSW
FLTXD
FLRXD
26
PA3
27
VSS
28
VDD
BEEP 29
PA4
RFPWR 30
PA5
31
TEMP
PA6
32
MDET
PA7
VOXV 33
PC4
MIC2 34
PC5
MIC1 35
PB0
BATV 36
PB1
37
PB2
SEG8 38
PE7
SEG9 39
PE8
SEG10 40
PE9
SEG11 41
PE10
42
PE11
43
PE12
SEG12 44
PE13
SEG13 45
PE14
SEG3 46
PE15
47
SEG14
PB10
48
SEG15
PB11
49
VSS
50
VDD
Explanatory notes
Voltage Line (VCC)
Voltage Line (+5V)
Voltage Line (+3.3V)
9-2
Q401
DTC044TEB
R426
15k
CLOCK/CLOCK SHIFT 12.288MHz
X400
CR-1021
R421
1M
12.288 MHz RESET
IC403
1
CD
2
1.93 Vp-p 1.45 Vp-p VSS
3
MR
NJU7704F3
CP403
CP06S
SEG7
SEG6
100 +3.3V
VDD
99
VSS
98 SEG5
PE1
97 SEG4
PE0
96 COM4
PB9
95
PB8
94
BOOT0
93
PB7
92
PB6
91
PB5
90
PB4
89
PB3
IC402
88
PD7
STM32L073VBT6
87
PD6
86
PD5
85
PD4
84
PD3
83
PD2
82
PD1
81
PD0
80
PC12
79
PC11
78
PC10
77
PA15
76
PA14
+3.3V
CP408
CP06S
* Refer to the PARTS LIST for the value and name of component.
VCC
+5V
S5V
T5V
+3.3V
ATSDA
CLONE ATSCK
ATCTS
BUFFER MAIN UNIT
ATSQ
(1/3)
ATDTMF
R428
MDET
TMUT
0
RFPWR
D413
TEMP
CL APCSW
LRB706F CLI
CLO
+3.3V
CSFT
R429
5
VDD
10k
4 NRST
VOUT
ATSDA
ATSCK
ATCTS
ATSQ
ATDTMF
TMUT
S5C
TXC
ISO1
ISO2
XPTT
BOOT0
ESDA
ESCL
IPTT
RMUT
KR3
KR2
KR1
KR0
KS3
KS2
KS1
KS0
CSFT
CLI
CLO
PWON
SWCLK