Icom IC-M220 Service Manual page 30

• LOGIC UNIT
CP201
CP08S
EP201
MPZ1608S101AT
FI201 IC201
A1 D1
I O RF_IN VSS
A2 D2
VSS VSS
A3 D3
VSS VSS
TA0757B A4 D4
VSS NC
A5 D5
VDD_BKUP_IN VDD_BKUP_BAT_IN
A6 D6
VSS I2C_SCL
A7 D7
GPIO0 I2C_SDA
B1 E1
VSS VSS
B2 E2
VSS VSS
B3 E3
VSS VSS
B4 E4
UART0_RX VSS
B5 E5
UART0_CTS VDD_PRPH_OUT
B6 E6
VSS VSS
B7 E7
UART0_TX VSS
C1
VSS
C2
VSS
C3
VSS
C4
NRST
C5
BOOT_MODE0
C6
VDD_IO_HOST
C7
GPIO1
GSU-141A-090C
R51
3.3M C22
J5
C21
GND
26 2.2
L3V
25 0.33
GND
24
VLCD
23
VB1+
22
VB1-
21
VB0-
20
VB0+
19
GND
18
L3V
17
DB7
16
DB6
15
DB5
14
DB4
13
DB3
12
DB2
11
DB1
10
DB0
9
L3V
8
WRO
7
CD
6
RESETB
5
CS
4
GND
3
LEDK
2
LEDV R52
1
100k
Backlight Brightness
MAXIMUM (7): 6.3 V
MINIMUM (1): 0.4 V
OFF: 0 V
Q1
R41
2SB1182G
LEDV
27
R40
1M
R42
330k
Q2
L2SC4081
D1
DZ2J068M
S1 S2 S3 S4
KEY KEY KEY KEY
[ ] [ ] [ ] [ ]
S5 S6 S7 S8
KEY KEY KEY KEY
[DISTRESS] [16/C] [MENU] [CLR]
JTMS
JTCK
PA14
76
JTDI
PA15
GPSTXD 77
PC10
GPSRXD 78
PC11
LEFT 79
PC12
DB2 80
PD0
81
DB3
PD1
82
ENT
R17 PD2
PONO 83
PD3
CP13 TEST 84
100 PD4
CP08S
WRO 85
PD5
86
RESETB
PD6
87
CS
PD7
JTDO 88
PB3
NJRST 89
PB4
CP39 90
PB5
DIMM CP08S 91
PB6
92
CP38
PB7
CP08S
R18 93
BOOT0
BUSYM 94
PB8
BUSY70 95
PB9
ECK 96
PE0
97
1k EDATA
PE1
98
VSS_3
99
VDD_3
NRST 100
JTDO
J4
NJRST
1 2
3 4
JTCK
5 6
7 8
JTMS
JTDI
CP1 TRACECK
CP08S CP2 TRACED0
CP08S
CP3 TRACED1
CP08S
CP4 TRACED2
CP5 CP08S TRACED3
CP08S
Backlight Brightness
MAXIMUM (7): 0.6 V
CR-1022
MINIMUM (1): 0.4 V
X1
OFF: 0 V
7.97 MHz
1.7 Vp-p
R60
L3V
12k
IC9
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
4 5
GND SDA
GT24C256A
UP
S9
KEY
[ ]
CH
ENT
RIGHT
S10 S11 S12
POW
KEY KEY KEY
[◄] [ENT] [►]
DOWN
S13 S14
KEY KEY
[ ] CH
[ VOL/SQL ]
PWR
BAND_EXP
CP12
CF20
VDD_1
50
VSS_1
49 CLORXD
PB11
48 CLOTXD
PB10
47
PE15
46
PE14
45
PE13
44
PE12
43 BE
PE11
42
PE10
41
PE9
40
PE8
39
IC1
PE7
STM32F101VDT6 38
PB2
37
PB1
36
CP33
PB0
35 CP08S
PC5
34
DSCDEC
PC4
33
PA7
32 VER
PA6
31 BEEP
PA5
30 DSCO
PA4
29
VDD_4
R26
28
VSS_4
27
PA3 27k
26
R32
100
L3V TXD RXD BOOT HV
5.9 V
R69 R67
5 C78
15k 47k IC14
3
R92
13.7 V 4
0.01
1
100
NJU7056F3
2
J2
CLONE
1 2 R114
PTT
3 4
MIC
5 6
R115
MICG
0
9-2
5V
L3V
NM1TXD
MICIN
AFINM
TDETV
EP8
NM1RXI
WXDEC
MPZ1608S101A
BUSYM
BUSY70
PONO
TXMSO
T5VSO
CLORXD
CLOTXD
R23 100
VCK
VDATA
SCK
SDIO
DB7
DB6
DB5
DB4
R25
AFINM
1k
S3
IC2
1
2
3
4
NJU7057RB1
BEEP
3.3 V
L3V
NM1RXD
NM1TXD
IC4
1 5
CTRL VIN
2
GND
3 4
NC VOUT
NJM2830U1
CLOTXD
CLORXD
HV
GND
NM1RXD
Explanatory notes
TX Line
RX Line
Voltage Line (HV)
R94
Voltage Line (5V)
22k
PTT
10
EP12
MICIN
MMZ1005S601CT
MICG
* Refer to the PARTS LIST for the value and name of component.
CP21
SP+
CP10S
SP- CP22
CP10S
J1
SP+ SP-
30 29
HV
28 27
5V
26 25
BEEPO
24 23
MICG
22 21
TEMPV
20 19
DSCDEC
18 17
DSCENC
16 15
PDN
14 13
VCK
12 11
VDATA
10 9
SCK
8 7
SDIO
6 5
RINTMO
4
3
2 1
L3V
R75
100
8
7 IC3
6 1 8
COM VCC
5 2 7
INH CH0
3 6
VEE CH1
4 5
GND A
TC7W53FK
HV
R87 Q3 D3 R83
100 L1SS400 10
IC5 DTA114EU
1 8
R84
7
2
3 6
Q4
47k
4 5
L2SC4081
TC7W14FU