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Icom IC-A25C Service Manual

Icom IC-A25C
90 pages
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9-2
TX Line
RX Line
Voltage Line
Explanatory notes
GND
LED0
LED1
LED2
RST#
PIO[6]
PIO[14]
PIO[8]/NC
USB_P
USB_N
PIO[10]
PIO[11]
PIO[9]/NC
GND
VBAT_SENSE
VBAT
CHG_EXT
VREGENABLE
VBUS
PIO[28]/QSPI_FLASH_IO[3
]
PIO[21]/QSPI_FLASH_CLK
GND
MIC_LN
MIC_LP
MIC_BIAS_A
MIC_BIAS_B
MIC_RN
MIC_RP
SP_RN
SP_RP
SP_LN
SP_LP
CAP_SENSE1
CAP_SENSE3
CAP_SENSE4
GND
GND
PIO[0]
PIO[1]
PIO[2]
SPI_CLK
GND
PIO[5]
PIO[4]
PIO[3]
SPI_MOSI
SPI_MISO
SPI_CS#
UART_RX
UART_TX
UART_RTS
UART_CTS
PIO[15]
PIO[7]
PIO[12]
PIO[13]
GND
PIO[23]/QSPI_FLASH_CS#
PIO[25]/QSPI_FLASH_IO[0]
PIO[27]/QSPI_FLASH_IO[2]
1.35V
PIO[22]/QSPI_SRAM_CLK
PIO[26]/QSPI_FLASH_IO[1
]
PIO[24]/QSPI_SRAM_CS#
PCM_SYNC
PCM_OUT
PCM_CLK
PCM_IN
CAP_SENSE0
CAP_SENSE2
CAP_SENSE5
GND
AIO[0]
AIO[1]
1.8V
VDD_PADS
BT_MISO
BT_MOSI
45
44
43
42
41
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
CP1
CP5
CP6
CP4
VIN
VSS
ON/OFFNC
VOUT
CD
VSS
MRVOUT
VDD
VSS
VSS
VDD_PRPH_OUT
VSS
VSS
VSS
VSS
I2C_SDA
I2C_SCL
VDD_BKUP_BAT_IN
NC
VSS
VSS
VSSRF_IN
VSS
VSS
VSS
VDD_BKUP_IN
VSS
GPIO0
VSS
VSS
VSS
UART0_RX
UART0_CTS
VSS
UART0_T X
VSS
VSS
VSS
NRST
BOOT_MODE0
VDD_IO_HOST
GPIO1
VIN
VSS
ON/OFFNC
VOUT
12
34
56
78
910
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
J1
*C630
*R856
*R857
*R858
*R859
*R860
*R861
*R862
*C633
*C637
*C638
*C639
*C640
*C641
*C642
*Q5
*R3
CP06S
CP06S
*C18
*C21
CP06S
*R28
*EP4
*C16
CP06S
*IC30
1
2
34
5
*EP9
*EP3
*R864
*R865
*Q17
*R866
*R868
*R869
*C7
*C5
*C6
*C645 *R871
*R863
*C648
*C649
0.1C31
*IC31
1
2
34
5
*IC32
1
2
3
4
5
*C650
*R962
*R879
*R874
*R875
*C652
*C653
0.001
C689
*R945
*R946
*C694
*C634
*C632
*C643
*C631
*Q16
*R867
*IC17
A1
A2
A3
A4
A5
A6
A7
B1
B2
B3
B4
B5
B6
B7
C1
C2
C3
C4
C5
C6
C7
E7
E6
E5
E4
E3
E2
E1
D7
D6
D5
D4
D3
D2
D1
0.1
C25
0.001C701
0.1 C687
0
R937
*R1059
*R1060
0
R595
CP06S
CP7
CP06S
CP8
*IC39
1
2
34
5
*C704
*C705
*C703
*R1063
*R1077
*D46
J3
*MP1
1
2
*C709
L1SS400
D34
*R947
*R873
*C651
*C2
*C1
NJM2836DL3
IC40
1
CONTROL
2
VIN
3
GND
4
VOUT
5
NC
10
C688
0.0047
C718
0.0047
C719
CP06S
CP16
CP06S
CP2
CP06S
CP3
CP06SCP9
CP06S
CP10
CP06S
CP11
CP06S
CP12
CP06S
CP13
CP06S
CP15
*C722
*R1092
*R1093
*IC1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
H_PTT
BT_CSB
HOPC
GPS_RES
VOLCLK
VOLDATA
UNLK
PSTB
PDATA
PCK
RFSTB
SCK
SDATA
OE
DA1STB
DA2STB
AGCOFF
TXC
PCON
PTT
PWSW
RSSI
SBATT2
VIN
VORON
BATDATA
BEEP
CLONE
DCIN
INTPTT
EMBI
DETO
JACKDET
LVIN
NOISE
CHGC
CHGIH
VORDET
BTMICSW
PWRBTN
HV
PATMP
BT_CLK
BT_DEMP
CPU_DEMP
BTTEST
+3V
+3V
GPS_TXD
GPS_RXD
SPMUTE
AFC
5VL
5VL
BT3V
BTTXD
BTTXD
BTRXD
BTRXD
FINED
RESET
GPSC
BT_SW
VCC
VCC
VCC
VCC
RFDETV
VOX
PCON
BTAF
BTAF
BTMIC
5.0 V
5.0 V
6.7 V5.0 V
POWER ON: 3.3 V
POWER OFF: 0 V
GPS Set (in the Menu)
ON: 3.3 V
OFF: 0 V
*IC-A25N only
GPS Set (in the Menu)
ON: 3.3 V
OFF: 0 V
*IC-A25N only
• LOGIC UNIT (2/2)
*Refer to the PARTS LIST for the value and name of component.

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Icom IC-A25C Specifications

General IconGeneral
PurposeAviation Service (Air Band)
Operating frequency118.000 – 136.992 MHz
Display typeLCD
Display diagonal2.3 \
Battery typeBP-288
Battery life (max)10.5 h
Battery low indicationYes
Number of batteries supported1
Product colorBlack
Operating temperature (T-T)-10 - 60 °C
Number of batteries included1 pc(s)
Antenna connector typeFA-B02AR
Weight and Dimensions IconWeight and Dimensions
Depth31.8 mm
Width58.9 mm
Height148.4 mm
Weight384 g

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