![background image](http://html.mh-extra.com/html/icom/ic-2820h/ic-2820h_service-manual_612070053.webp)
MP2 (C)
MP8 (C)
MP3 (C)
MP9 (C)
S1 (M)
MP6 (C)
MC1 (M)
J1 (M)
MP4 (C)
MP1 (C)
MP5 (C)
W1 (C)
Unit abbreviations
(C): CHASSIS PARTS
(M): MAIN-A UNIT
MAIN-A UNIT
J1
1
2
3
4
5
6
7
8
Q2
Q3
Q4
Q5
Q6
Q7
Q9
D1
D16
7
1
D
D18
1
S
D
2
S
D
3
S
D
4
S
D
5
S
D
6
S
D
7
S
D
8
S
D
R
G
DS11
MC1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
6
C
I
1
0
A
2
1
A
3
2
A
4
S
S
V
5
A
D
S
6
L
C
S
7
P
W
8
C
C
V
IC3
1
OUT
2
VDD
3
VSS
4
NC
5
CD
X1
EP2
EP3
EP4
EP1
1
S
3
2
C
4
2
C
5
2
C
7
2
C
6
2
C
C16
C17
C18
C19
C21
C22
5
1
C
C13
C12
1
C
2
C
9
2
C
C5
C9
C10
C11
4
1
C
C30
C31
R5
R38
5
3
R
4
R
3
R
2
R
R6
R7
R8
6
3
R
1
4
R
R37
R39
R40
9
R
2
1
R
3
1
R
6
1
R
0
1
R
1
1
R
4
1
R
5
1
R
R18
R19
HR30
R27
2
4
0
R
L1
L2
5
D
3
D
1
1
D
2
1
D
9
D
4
D
6
D
0
1
D
7
D
Q1
Q8
1
C
I
1
0
1
P
2
0
9
O
Z
B
/
1
3
P
3
P
P
V
4
T
E
S
E
R
5
2
X
6
1
X
7
S
S
V
8
D
D
V
9
0
9
O
T
/
0
3
P
0
1
0
8
I
T
/
7
2
P
1
1
2
P
T
N
I
/
6
2
P
2
1
1
P
T
N
I
/
5
2
P
3
1
0
P
T
N
I
/
4
2
P
4
1
0
2
S
S
/
3
2
P
5
1
0
2
1
I
S
/
2
2
P
6
1
0
2
D
X
T
7
1
0
2
K
C
S
A
8
1
7
0
P
9
1
6
0
P
0
2
5
0
P
1
2
4
0
P
2
2
3
0
P
3
2
2
0
P
4
2
1
0
P
5
2
0
0
P
6
2
5
1
P
7
2
4
1
P
8
2
3
1
P
9
2
2
1
P
0
3
1
1
P
3
4
R
4
4
R
5
4
R
6
4
R
7
4
R
8
4
R
9
4
R
0
5
R
1
5
R
R22
R23
R24
R25
R
G
DS10
MKEY-I0
MKEY-I1
MKEY-I2
MKEY-I3
MKEY-08
MKEY-07
MKEY-06
MKEY-05
MKEY-04
MKEY-03
MKEY-02
MKEY-01
MKEY-00
)
1
M
-
D
E
L
(
R
-
E
D
O
M
)
2
M
D
E
L
(
G
-
E
D
O
M
PTT
F-1
F-2
VFO
MR
BAND
UP
DN
1
2
3
4
5
6
A
B
C
D
9
8
7
0
FUNC
DTMF
M8V
MU/D
M8VSW
PTT
MICE
MIC
E
MDATA
LED-S2
SEND
LED-M2
LED-M1
C:7.6
R:6.8
T:6.8
R:7.5
T:7.5
C:5.0
C:3.8
C:3.8
C:3.8
C:3.8
F:1.9
F:1.9
D:1.9
T:1.9
P:1.9
C:5.0
F: [FUNC] is pushed
D: DTMF is activated
C: Common
R: Receiving
T: Transmitting
• EXPLODED VIEW
• VOLTAGE DIAGRAM
11 - 1
SECTION 11
HM-133
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
[MAIN-A UNIT]
REF
ORDER
DESCRIPTION
M.
H/V
NO.
NO.
LOCATION
IC1 1140011491
S.IC
uPD789071MC-041-5A4-E1-A
B
51.1/24.5
IC3 1110006310
S.IC
BD5245G-TR
B
67.3/34.8
IC6 1130012030
S.IC
BR24L02FV-WE2
B
39.4/30.1
Q1 1530001941
S.TR
2SC2712-BL
(TE85L,F)
B
26.1/11
Q2 1590000680
S.TR
DTC114EUA
T106
B
21.6/34.8
Q3 1590001330
S.TR
DTA114EUA
T106
B
24.7/34.8
Q4 1510000771
S.TR
2SA1586-GR
(TE85R,F)
B
54.7/34.9
Q5 1510000771
S.TR
2SA1586-GR
(TE85R,F)
B
54.5/37.5
Q6 1510000771
S.TR
2SA1586-GR
(TE85R,F)
B
48.5/5.8
Q7 1510000771
S.TR
2SA1586-GR
(TE85R,F)
B
48.5/3.3
Q8 1530001941
S.TR
2SC2712-BL
(TE85L,F)
B
19.5/9.9
Q9 1590001010
S.TR
DTB113ZK
T146
B
22.8/11
D1 1790000950
S.ZEN
MA8056-M
(TX)
B
23.1/17
D3 1750000940
S.DIO
ISS400
TE61
B
64.7/23.2
D4 1750000940
S.DIO
ISS400
TE61
B
64.7/29.2
D5 1750000940
S.DIO
ISS400
TE61
B
59.6/25.5
D6 1750000940
S.DIO
ISS400
TE61
B
58.7/20.8
D7 1750000940
S.DIO
ISS400
TE61
B
42.8/16.7
D9 1750000940
S.DIO
ISS400
TE61
B
34.1/16.3
D10 1750000940
S.DIO
ISS400
TE61
B
34.9/17.8
D11 1750000940
S.DIO
ISS400
TE61
B
38.8/14.5
D12 1750000940
S.DIO
ISS400
TE61
B
57.2/29
D16 1730002280
S.ZEN
MA8091-M
(TX)
B
55.2/14.5
D17 1730002280
S.ZEN
MA8091-M
(TX)
B
48.8/14.5
D18 1730002280
S.ZEN
MA8091-M
(TX)
B
12.5/13.9
X1 6060000610
S.CER
EFOS4914E3
B
42.6/22.3
L1 6200001520
S.COL
MLF2012D
R82K-T
B
12/28.9
L2 6200001520
S.COL
MLF2012D
R82K-T
B
10.7/13.9
R2
7030000400 S.RES MCR10EZHJ 1.5 k
B
24.2/8.3
R3
7030000400 S.RES MCR10EZHJ 1.5 k
B
41.9/8.3
R4
7030000400 S.RES MCR10EZHJ 1.5 k
B
57.3/8.2
R5 7030003400
S.RES
ERJ3GEYJ
471
V
(470)
B
28.6/11.2
R6
7030003620 S.RES ERJ3GEYJ 333 V (33 k)
B
26.8/34.7
R7
7030003620 S.RES ERJ3GEYJ 333 V (33 k)
B
23.3/36.8
R8
7030003570 S.RES ERJ3GEYJ 123 V (12 k)
B
19.1/33.7
R9
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
57.6/35.6
R10
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
57.6/34.3
R11
7030003480 S.RES ERJ3GEYJ 222 V (2.2 k)
B
57.6/36.9
R12
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
60.4/37.2
R13
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
45.7/5.5
R14 7030003420
S.RES
ERJ3GEYJ
681
V
(680)
B
51.5/5.9
R14
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
51.5/5.9
R15 7030003400
S.RES
ERJ3GEYJ
471
V
(470)
B
51.5/3.3
R15
7030003480 S.RES ERJ3GEYJ 222 V (2.2 k)
B
51.5/3.3
R16
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
45.7/4.2
R18
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
41.6/33.6
R19
7030003640 S.RES ERJ3GEYJ 473 V (47 k)
B
38.4/34.5
R22
7030003520 S.RES ERJ3GEYJ 472 V (4.7 k)
B
37.9/18.7
R23
7030003520 S.RES ERJ3GEYJ 472 V (4.7 k)
B
56.1/18.1
R24
7030003520 S.RES ERJ3GEYJ 472 V (4.7 k)
B
58/18.6
R25
7030003520 S.RES ERJ3GEYJ 472 V (4.7 k)
B
59.8/18.9
R27
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
68.1/32.5
R35
7030000400 S.RES MCR10EZHJ 1.5 k
B
69.1/11.9
R36
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
20.5/30.6
R37
7030003460 S.RES ERJ3GEYJ 152 V (1.5 k)
B
19.1/30.6
R38
7030003720 S.RES ERJ3GEYJ 224 V (220 k)
B
17.5/7.7
R39
7030003480 S.RES ERJ3GEYJ 222 V (2.2 k)
B
24.4/5.7
R40
7030003480 S.RES ERJ3GEYJ 222 V (2.2 k)
B
24.4/3
R41
7030003560 S.RES ERJ3GEYJ 103 V (10 k)
B
17/32.7
R42 7030003860
S.RES
ERJ3GE
JPW
V
B
68.4/21.6
R43
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
57.4/27.5
R44
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
57.3/22.1
R45
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
53.9/18
R46
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
37.8/15.8
R47
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
37.6/17.1
R48
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
45.3/17.6
R49
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
57.3/26.2
R50
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
58.1/23.4
R51
7030003440 S.RES ERJ3GEYJ 102 V (1 k)
B
57.4/24.7
C1
4030006850 S.CER C1608 JB 1H 471K-T
B
52/16.9
C2 4510008500
S.ELE
EEE1CA101WP
B
35.5/5.8
C5
4030007050 S.CER C1608 CH 1H 220J-T
B
14.9/30.4
C9
4030007050 S.CER C1608 CH 1H 220J-T
B
16.3/16.9
C10
4030007050 S.CER C1608 CH 1H 220J-T
B
15.6/15.5
C11
4030007050 S.CER C1608 CH 1H 220J-T
B
15.6/7.2
C12
4030006860 S.CER C1608 JB 1H 102K-T
B
64.9/34.4
C13
4030006860 S.CER C1608 JB 1H 102K-T
B
44.3/27.6
C14
4030006900 S.CER C1608 JB 1H 103K-T
B
67.5/37.2
C15
4030006860 S.CER C1608 JB 1H 102K-T
B
41.9/29.7
C16
4030006860 S.CER C1608 JB 1H 102K-T
B
14.1/13.6
C17
4030006860 S.CER C1608 JB 1H 102K-T
B
11.7/17.4
C18
4030006860 S.CER C1608 JB 1H 102K-T
B
10.4/17.4
C19
4030006860 S.CER C1608 JB 1H 102K-T
B
13/25.8
C21
4030006860 S.CER C1608 JB 1H 102K-T
B
11.7/25.8
S.=Surface mount
[MAIN UNIT]
REF
ORDER
DESCRIPTION
M.
H/V
NO.
NO.
LOCATION
C22
4030006860 S.CER C1608 JB 1H 102K-T
B
10.4/28.5
C23
4030006860 S.CER C1608 JB 1H 102K-T
B
23.1/14
C24
4030006860 S.CER C1608 JB 1H 102K-T
B
67.2/12.1
C25
4030006860 S.CER C1608 JB 1H 102K-T
B
25.6/32.2
C26
4030006860 S.CER C1608 JB 1H 102K-T
B
53/4.6
C27
4030006860 S.CER C1608 JB 1H 102K-T
B
60.9/35.9
C29 4510008540
S.ELE
EEE1CA100SR
B
26.4/16
C30
4030011600 S.CER C1608 JB 1E 104K-T
B
23/3
C31 4510008540
S.ELE
EEE1CA100SR
B
28.3/4.9
J1 6510023110
CNR
3008L-8P8C
<KIN>
DS1 5010000120
S.LED
LN1371G-(TR)
T 21.9/11
DS2 5010000120
S.LED
LN1371G-(TR)
T 21.9/32
DS3 5010000120
S.LED
LN1371G-(TR)
T 39.3/11
DS4 5010000120
S.LED
LN1371G-(TR)
T 39.3/32
DS5 5010000120
S.LED
LN1371G-(TR)
T
55.9/2.5
DS6 5010000120
S.LED
LN1371G-(TR)
T
56.2/26.8
DS7 5010000120
S.LED
LN1371G-(TR)
T
71.7/14.8
DS8 5010000120
S.LED
LN1371G-(TR)
T
72.2/33.8
DS10 5010000150
S.LED
LT1EP53A
T 51.6/5
DS10 5040003160
S.LED
BRPY1211C-TR
T 51.6/5
DS11 5010000150
S.LED
LT1EP53A
T 51.6/38
DS11 5040003160
S.LED
BRPY1211C-TR
T 51.6/38
MC1 7700002310
MIC EM-140
S1 2260000980
SW
SKHHLP014A
EP1 6910012350
S.BEA
MMZ1608Y
102BT
B
10.4/25.8
EP2 6910012350
S.BEA
MMZ1608Y
102BT
B
14.3/17.4
EP3 6910012350
S.BEA
MMZ1608Y
102BT
B 13/17.4
EP4 6910012350
S.BEA
MMZ1608Y
102BT
B 14.5/11
[CHASSIS PARTS]
REF
ORDER
DESCRIPTION
QTY.
NO.
NO.
W1 8900011271
OPC-1153A
1
MP1
8210018830 2539 FRONT PANEL
1
MP2
8210018840 2539 REAR PANEL
1
MP3
8930057380 2539 PTT BUTTON
1
MP4
8930057390 2539 LED LENS
2
MP5
8930057570 2539 SW RUBBER
1
MP6 8930057520
2539
KEYBOARD
1
MP8
8810009371 Screw BT B0 3X12NI-ZK3 (BT)
2
MP9
8810009561 Screw BT B0 2X6 NI-ZK3 (BT)
3
[MAIN-A UNIT]
REF
ORDER
DESCRIPTION
QTY.
NO.
NO.
J1 6510023110
3008L-8P8C
1
MC1 7700002310
EM-140
1
S1 2260000980
SKHHLP014A
1
• ELECTRICAL PARTS
• MECHANICAL PARTS
31.5
(1
1
/
4
)
61.0
(2
13
/
32
)
104.0
(4
3
/
32
)
54.3
(2
1
/
8
)
Unit: mm (inch)
• DIMENTIONS
E2820̲A3format.indd 26-27
2007/04/13 17:30:02