Voltage Diagram - Icom IC-2730A Service Manual

SECTION 10.

VOLTAGE DIAGRAM

• CONTROL UNIT
TEMP
R17
39k
L_BAND
S4
L_V_MHZ
L_V_MHZ
S5 L_DIALA
L_DIALB
L_M/CALL
R_DIALA
S6 R_DIALB
MONI
MONI LOW
S7 L_BAND
L_M/CALL
LOW R_V_MHZ
S8 R11 100k
MW
S9
R12 100k
MENU
S10
R_BAND
S11
R_V_MHZ
S12 R13 100k
R_M/CALL
S13
R14 100k
POWER
S3
R51
R15
RSQL
1k
R_SQLV
R09022N0
R_VOLV
R50
R16
RVOL
1k
R09022N0
R3
R4
LSQL L_SQLV
1k
R09022N0
R8
L_VOLV
R7
1k
LVOL
R09022N0
S15
2 R_DIALA
A KEYLIGHT
1
RDIAL COM
3 R_DIALB
B
EC12E24204A9
S14
2 L_DIALA
A
1
LDIAL COM
3 L_DIALB
B
EC12E24204A9
C_98_DATA
P50/INTP1/SI00/RxD0/TOOLRxD/SDA00/TRGIOA/(TRJO0) VDD
13
P51/INTP2/SO00/TxD0/TOOLTxD/TRGIOB VSS
14
P17/TI02/TO02/TRDIOA0/TRDCLK/IVCMP0/(TXD0) REGC
15
P16/TI01/TO01/INTP5/TRDIOC0/IVREF0/(RXD0) P121/X1
16
P15/PCLBUZ1/SCK20/SCL20/TRDIOB0/(SDAA0) P122/X2/EXCLK
17
P14/RxD2/SI20/SDA20/TRDIOD0/(SCLA0) P137/INTP0
18
P13/TxD2/SO20/TRDIOA1/IVCMP1 P123/XT1
19
P12/SO11/TRDIOB1/IVREF1 P124/XT2/EXCLKS
20
P11/SI11/SDA11/TRDIOC1 RESET
21
P10/SCK11/SCL11/TRDIOD1 P40/TOOL0
22
P146 IC1 P41/(TRJIO0)
C_MICUD 23
P147/ANI18/VCOUT1 P120/ANI19/VCOUT0
R5F104GAAFB
24
Q103 FLTXD
LDTC114YE
FLRXD
10-1
DS1
JIC-LTNN013601
EP109
MMZ1005Y102CT
LCD_SDA
LCD_SCL
48
47
46
45 MW
44 POWER
43 MENU
42 R_M/CALL
41
RESET
40
TOOL0
39
TEST2
38 TEMP
37
Q102
2SC4738
DIM_1
DIM_2
DIM_3
DIM_4
SW3C
EP110 Q6 Q5
LDTC114YE LDTC114YE
MMZ1005Y102CT
IC7
1 5
VIN VOUT
2
VSS
3 4
CE NC
XC6209F332MR
R91
1k Q104
DMG504010
R52
4 3
R93 4.7k R53
5 2
10k R94 4.7k
6 1
47k
RX_DATA
TX_DATA
R85 4.7k
R86 4.7k
1
VDD
2
SDA
3
SCL
4
VSS
COM0 5
COM0
COM1 6
COM1
7
COM2
COM2
8
COM3
COM3
9
SEG0
COM4/SEG0
SEG1 10
COM5/SEG1
SEG2 11
COM6/SEG2
SEG3 12
COM7/SEG3
SEG4 13
COM8/SEG4
SEG5 14
COM9/SEG5
SEG6 15
COM10/SEG6
SEG7 16
COM11/SEG7
17
SEG8
COM12/SEG8
18
SEG9
COM13/SEG9
19
SEG10
COM14/SEG10
SEG11 20
COM15/SEG11
R71 D100
2.2k L1SS400
Q4 Q3
LDTC114YE LDTC114YE
C64
1
R64
100k
D108
VC040205X150
Q8
IC5
1 4
VSS VDD LDTC114YE
2 3
OUT CD
S-80929CNPF
EP8
IC6
5 1
VOUT VIN
2
VSS
4 3
NC CE
XC6209F332MR
*: Refer to the PARTS LIST for the value and name of component.
60 SEG51
SEG51
59 SEG50
SEG50
58 SEG49
SEG49
57 SEG48
SEG48
56 SEG47
SEG47
55 SEG46
SEG46
54
SEG45
SEG45
53
SEG44
SEG44
52
SEG43
SEG43
51 SEG42
SEG42
50 SEG41
SEG41
49 SEG40
SEG40
48 SEG39
SEG39
47 SEG38
SEG38
46 SEG37
SEG37
45 SEG36
SEG36
44
SEG35
SEG35
43
SEG34
42
SEG33
SEG33
41 SEG32
SEG32
J101
EP100
1 8V
EP101
2
MICU/D(MICUD)
EP102
3
EXTMIC(MICSEL)
EP103
4 PTT(MICPTT)
EP104
5 MICE
EP105
6 MIC
EP106
7 GND
EP107
8 MICIN (98DATA)
MMZ1005Y102CT
R59
12k
R57
330k
R60
100k
R62
R61 C62
R55
220k 15k 1
1k
R127
Q7
2SA1832
2.2k
R126
47k
MMZ1005Y102CT J6
EP3
MICE 1
1
2
MMZ1005Y102CT MIC
2
3
GND
3
4
RX_DATA
4
TX_DATA 5
5
8V 6
6
CGND