Icom IC-E2820 Service Manual page 48

10-2 MAIN UNIT (1)
ZBFS5105
C622
0.001 L138 L139
ZBFS5105 ZBFS5105
IC24
OPC-465
2SB1132 TA7808F
Q81
HV VCC
I O
G
W50
R477
47K
IC21
TA7805F
C;4.95V
4.7K
I O
G R498
MA2S111 470
D119
R499
4.7K
R500
MA2S111 470
D120 R501
Q82
UNR9214J TEMP
IC22
1 8
A0 VCC
2 7
A1 WP
3 6 SCL
A2 SCL
4 5 SDA
VSS SDA
24LC512T
CLONE_OUT
CLONE_I N R512
100
AVcc
R831 73
P50/TxD2
AF_VOL_CK 74
P51/RxD2
AF_VOL_DATA 75
P52/SCK2
AF_VOL_STB 76
PF0/BREQ/IRQ2
77
PF1/BACK/BUZZ
78
PF2/WAIT
100 79
PF3/LWR/ADTRG/IRQ 3
AF_VOL_RES R832 100 80
PF4/HWR
81
R833 PF5/RD
L_AF_MUTE 82
PF6/AS
83
100 P1Vcc
84
MIC_PTT
PF7/FAI
85
Vss
86
TEST
87
VCL*
X4 88
C588 OSC2
89
OSC1
NMI 90
18P
NMI
CR-841 MD2 EP19 91
MD2
MMZ1005Y102CT MMZ1005Y102CT 92
XTAL
93
EP20 Vss
XOUT 94
R481 EXTAL
95
1M Vcc
96
MD0
97
MD1
MIC_PTT 98
STBY
99
RESET
RES
100
R815 P20/TIOCA3
CL_SFT1 101
P21/TIOCB3
102
R816 100K P22/TIOCC3
CL_SFT2 103
P23/TIOCD3
104
100K
P24/TIOCA4
L_SQL 105
P25/TIOCB4
CL_SFT2 106
P26/TIOCA5
CL_SFT1 107
P27/TIOCB5
108
4.7K
RESET 100
GPSRESET R489
R476
IC23
1 5 R_SQL
OUT CD
2
VDD R836
3 4
DCEL
VSS NC
100 R835
S-80945CNMC ACQ
100
98_DATA
R484
100K
R479
MIC_SEL
1k
I CU and Flash
J24
NMI
12
MD2
34
RESET
56
CF20OPEN
78
CP1
91 0
52465-1071
4.7K R495
MICUD
1k
R494
J2 MMZ1608Y102BT X8
EP5
8V 1
EP6
MICU/ D 2
EP7
EXTMIC 3
EP8
PTT 4
EP9
MICE 5
EP10
MIC 6
EP11
GND 7
EP12
MICI N 8
3008L-8P8C
0.001
0.001
R858
HSJ1462-01-010 IC46
MMZ1005Y102CT
0.22 1 16 470K
J5
MMZ1005Y102CT EN FORCEOFF
C849 2 15
EP32 C1+ VCC
3 14 1SS400
V+ GND
C850 4 13 1SS400
EP31 C1- COUT
0.22 5 12 D165
C2+ FORCEO N
6 11 D166
C2- DI N
7 10
V- INVALID
R759 C852 8 9
RIN ROUT
0.22 R859
100
MAX3221IPWR
470K
100
1SS400
R758
D167
PCB-606
6
6 TXDATA EP16 MMZ1005Y102CT R490 10K
5
5 RDATA R473 1k
4
4 GND EP14 MMZ1608Y102BT
3
3
CTHV EP13
2
2
1 MMZ1608Y102BT
1
J3
C618
L141
0.001
ZXCT1022
R850 R871
VI N VOUT
4 3
GND 180K 100K
2
LOAD NC
5 1
IC55
R814
100
100
PA6/A22
36
PA5/A21
35
PA4/A20
34
PA3/A19
33
PA2/A18
32
PA1/A17
31
PA0/A16
30
PB7/A15
29
PB6/A14
28
PB5/A13
27
PB4/A12
26
PB3/A11
25
PB2/A10
24
PB1/A9
23
PB0/A8
22
PC7/A7
21
PC6/A6
20
PC5/A5
19
PC4/A4
18
PC3/A3
17
PC2/A2
16
PC1/A1
15
P1Vcc
14 R486
PC0/A0
13 100
Vss
12
PD7/D15
R536 100
11
PD6/D14
10
PD5/D13
9
PD4/D12
8
PD3/D11
7
PD2/D10
6
PD1/D9
5
PD0/D8
4
PE7/D7
3
PE6/D6
2
PE5/D5
1
C;7.88V
18K
MMZ1005Y102CT
R560
R529 EP23
1k
33 MSVB2
2SC4738
C619 C620 R562
Q87
0.039 0.039 470K
C624 R545 5
3 IC28
R527
4
1 15K
1
4.7K
TA75S558F
2
IC26
5
1
98_DATA
4
3
2
LMV321IDCK
R517
2.2K
MIC_PTT
Q86
2SC4738
HV
8V
5V
5VS
*D132
*D136
R_UVCO_SEL R_UVCO_SEL
*D133
*D137
R_VVCO_SEL R_VVCO_SEL
*D134
*D138
L_LO_SW L_LO_SW
*D135
IC33
1
*D139 RSTN
R_DA_SEL R_DA_SEL 2
ADRS1
3
*D124 ADRS2
4
DVDD
5
*D128
LOUT
R_AFFILSEL 6
R828 LIN
7
*D125 AVDD
8
0 VRL
*D129
R_DET_MUTE SM6451B
*D126
*D130
L_DA_SEL
*D131
L_DET_MUTE
R558 VTX_C
VMMUTE
L_UNLOCK
PLLDATA
R563 PLLCK
R_UNLOCK
R_PLLSW
L_VCO_SHIFT
R556 UTX_C
UMMUTE
L_WN_SEL
L_R5C
IC31
R557
DTCS_SEL
100 1 14
I/O1 VDD
2 13 RPT_MUTE
O/I1 CONT1
3 12
100
O/I2 CONT4 MRIPT
L_AMC 4 11
R564
I/O2 I/O4
L_PLLSTB P_MOD_MUTE 5 10
CONT2 O/I4
R_PLLSTB UNR9213J 6 9
CONT3 O/I3
ANALOGSW Q91 7 8
VSS I/O3
SUB_SEL
CD4066BPWR
DDETSEL
R534 100
R561 MODSEL
MOD_DA
DADJSEL
R572
DADJMUTE
100K
R573 22K C651
DDETMUTE
MIC_SENC
1
100K R587
R813 P_SQL
R567 R568
C647
P_PTT DTMF GPSRXD0
1200_9600SEL
4.7K 100K 0.0033
R_WN_SEL GPSTXD0
R559 DCONT
MM_MUTE
DA_SEL
AN
DTMFSEL
DVDTMFSEL CPU DTMF
MM_MUTE
IC30
R566
C636 C637
1 14
I/O1 VDD
2 13
1 8.2K 1 O /I1 CONT1
3 12
O /I2 CONT4
4 11
I/O2 I /O4
5 10
CONT2 O /I4
6 9
CONT3 O /I3
M IC_SENC 7 8
VSS I /O3
CD4066BPWR
Q88
UNR9213J R570
100K
UNR9213J
Q90
C;4.86V
DCONT
IC29 IC52
1 8 8 1
COM VCC VCC COM
2 7 7 2
INH CH0 CH0 INH
3 6 6 3
VEE CH1 CH1 VEE
4 5 5 4
GND A A GND
TC7W53FU 0.1 TC7W53FU
C648
AN6123MS
C645
I NPUT DET
3 2
0.1 GND
4
OUTPUT VCC
5 1
IC32
UNR9113J
R594 10
Q92 DATAOUT
P_PTT
4.7K C663
J4
EP68
AFOUT
6 5
MMZ1005Y102CT
P_SQL EP24
4 3 Q95
MMZ1005Y102CT R588
2 1
U NR9213J
8.2K
UNR9213J
Q93
DN-508B-6-L
EP70 MMZ1005Y102CT
MMZ1005Y102CT
P_LR_SEL
C;4.87V
D142
U NR9210J
Q98
MA742
IC36
1 5
2
R635
3 4
330K
SN74AHC1G08DCK3
16
MDT
15
MCK
14
MLEN
13
R638
DVSS C679
12
ROUT
11
RIN 0.1 10K
10
AVSS
9
VRR R630
330K
C680
R639
1k
0.1
R631
330K
IC60
1
COM
2
INH
3
VEE
4
GND
TC7W53FU
R627 R632
C695
10K
3.9K 39K
R644 10
Q100
UNR9213J
R624
2SA1362
Q94
100
AXN330C130P
EP26
EP27
Q118 R765
UNR9213J
220K
IC48
R620 1
2
3
D141 Q97 10K
4
2SC4738
5
MA2S111
6
7
LM2902PWR
C862
5 1
0.047
Q99 2
UMG9N
4 3
TC7W53FU LMV321IDCK
A GND
5 4
CH1 VEE IC50
6 3
CH0 INH 5
7 2 1
VCC COM
8 1 4
IC34 3
R615 2
2.2M
R800 R799
220K 220K
C684 10
C685 10
IC35
1 14
I /O1 VDD
2 13
O/I1 CONT1
3 12
O/I2 CONT4
4 11
I /O2 I /O4
5 10
CONT2 O/I4
6 9
CONT3 O/I3
7 8
VSS I /O3
BU8872FS
CD4066BPWR
DTMSD
SD GND
9 8
NC NC
DTMCK 10 7
ACK OSCI
11 6
NC NC
12 5
NC NC
DTMSTB 13 4
EST O SC0
14 3
NC NC
15 2
VDD INPUT
16 1
IC56
10 - 2
HV
8V
5V
5VS
L5V
LA4445
IC38
2SC4213
Q 103 B2B-ZR-SM4-TF
J7
SP1
1 1
2 2
PZ1608S221A M
J9
EP55 EP54
Q101
2SC4213
M PZ1608S221A
HSJ1403-01-010
M PZ1608S221A
0.1
EP52
C716 EP53
R649 330K
8.2K R663 M PZ1608S221A
Q102
719 C EP51
2SC4213
J8
47P
R665
PJ-3047S
12K EP49
MPZ1608S221A
IC61 MOD_DA
8 1 8 MODSEL
VCC COM VCC
R_RSSI
7 2 7
CH0 INH CH0
R_LV
6 3 6
CH1 VEE CH1
5 4 5
A GND A
UTX_C UTX_C
TC7W53FU
VTX_C
DA3_STB
DA2_STB
CTCSS/DTCS
DA_STB
DA_CK
DA_DATA
L_LV
R_LV
L_LO_SW
R_VVCO_SEL
R_UVCO_SEL
VMMUTE
UMMUT E
L_VCO_SHIFT
PLLDATA
PLLCK
L_PLLSTB
R_PLLSTB
L_PLLSW
R_PLLSW
L_UNLOCK
14
R785 R_UNLOCK
13
12
L_R5C
390P 2.2K
11
R_R5C
C855
10
R_AMC
9
L_AMC
8
IC51
1 8
COM VCC R400_S
2 7
INH CH0
3 6
VEE CH1
4 5
GND A
TC7W53FU
AMOD
9600bps
D-star R_RX800
L_WN_SEL
L_DET_MUTE
L_DA_SEL
AN
DA_SEL
L_AFFILSEL
R_AFFILSEL
DADJSEL
DADJMUTE
L_DTCS_IN
L_WXALT
DAFOUT
DDETMUTE
DDETSEL
R779 R780 R781 C864
VDET VDET
220K 100K 10K 4.7
1/2 VCC
R777 C865
UDET
UDET
220K 4.7
R_WN_SEL
R_DET_MUTE
R_DA_SEL
DVDTMFSEL
VAFO
VAFO
UAFO UAFO
R_WXALT
R_DTCS_I N
C903
L_SQL
0.1
L_RSSI
C902
R_SQL
47P
R_RSSI
C901
DTMFSEL
CR-838 47P
*; Refer to "PARTS LIST."