Alinco DR-138, Service Manual

Page: 34 / 42

DR138
R506
10K
R580
18K
R579
715K-1%
C555
152P(J)
R508
47K
C539
224P(J)
R563
470K
R507
3K3
C531
39P R571
25K5-1%
R521
20K
R576
11K5-1%
C554
272P(J)
R577
150K-1%
C503
103P
C521
124P(J)
R574
15K8-1%
R572
5K11-1%
C553
473P(J)
E512
10uF/10V
R530
100K
C541
393P(J)
R573
634K-1%
C537
391P
R564
390K
R575
29K4-1%
C540
182P(J)
R578
4K22-1%
R566
56K
C522
104P(J)
R528
100K
R516
1K
R570
68K
C556
102P(J)
R527
100K
R553
1M
R581
39K
R565
33K
R531
100K
C517
104P
C516
104P
R569
12K
C501
103P
R562
33K
R547
27K
DET
C542
113P(J)*
C543
103P(J)
C544
103P(J)
C545
103P(J)
C546
103P(J)
C547
103P(J)
C548
103P(J)
C549
103P(J)
C550
103P(J)
C538
273P(J)
C519
104P
R532
100K
R552
1M
E503
1uF/16V
C523
104P(J)
SUBO
SUBB
E506
1uF/16V
5C 5C
5C
E505
1uF/16V
E514
NOUSE
VB
VB
VB
VB
VB
VB
R518
10K
C561
47P
E509
1uF/16V
C526
104P(J)
R509
47K
C560
152P(J)
R510
47K
1
1
2
2
3
3
D501
1SS372
R560
18K
R583
150K
C525
104P(J)
E522
2.2uF/10V
R500
470R
5C
R558
R0
E508
1uF/16V
R568
22K
R557
R0
VB
R561
51K
C532
33P
R584
6K8
R550
2K2
E502
1uF/16V
C524
104P(J)
R539
100K
R538
100K
R582
680K
VB
C559
561P(J)
R537
100K
R536
100K
C558
332P(J)
C527
82P(-J)
R519
2K2
C518
104P
R523
1K5
5C
C502
103P
R533
100K
R534
100K
R535
100K
R567
120K
C536
391P
VB
SQUELCH DET
MOD-AUDIO
MOD-SUB
Vin1
1
Vout1
2
Vout2
3
Vin2
4
VDD
5
LD
6
CLK
7
DI
8
Vin3
9
Vout3
10
Vout4
11
vin4
12
vin5
13
Vout5
14
Vout6
15
Vin6
16
DO
17
VDAref
18
RESET
19
GND
20
Vin7
21
Vout7
22
Vout8
23
Vin8
24
U505
M62364F
FREQ-CONT
C507
103P
C505
103P
E516
4.7uF/6.3V
E515
10uF/10V
R517
1K
R515
1K
R544
NOUSE
C506
103P
Q502
2SC4181
D502
DAN222
C552
104P
5C
5C
C504
103P
AFWN
SQL
DTMF-DET
AFM
E507
1uF/16V
E518
473P(1206)
AFWN
AF-IN
AF-IN
MODAO
MODAO
MODBO
MODBO
SUB
MODAI
MODAI
FRQO
FRQO
AM-SW
WIDE/NARROW
RSSI
RX/TX
PLL CLOCK LINE
PLL DATA LINE
PLL STB ENABLE
PLL LD LINE
PC/TV
PC/TVO
PC/TVO
ELD
CLK
DAT
SUB
DTMF
C557
105P
R520
1K
VLO
MICM
MICO
MICO
B
B
C
C
E
E
Q500
DTC144EE
SBE
C509
103P
LS500
SPK-8R-56
E521
330uF/25V-10*16
A
1
B
2
C
3
J502
PHONEJACK
VLO
C508
103P
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
J500
M
A
IN
IN
T
E
R
F
A
C
E
(0
.5
S
-1
-3
2P
B
)
W/N
RSSI
AIR
RX/TX
CLK
DAT
STB
PLD
MICI
MICI
SQL
RSSI
MICM
RXC
AFM
DTMF-DET
SPM
STB
CLK
DAT
ELD
PLD
AIR
RX/TX
W/N
TXC
DTMF
SUBO
SUBB
8RX-CONTROL
8TX-CONTROL
AM/FM-CONTROL
SUB
RXC
AIR
TXC
C551
103P(J)
C530
NOUSE
R522
22K
C515
102P
SPLATTER
FILTER
AGC/
MIC MUTE
MIC AMP/
IDC
AUDIO AMP
DIGITAL
POTENTIOMETER
BUFFER AMP
CTCSS/DCS LPF
FILTER
AUDIO/HPF
FILTER
AUDIO/LPF
FILTER
REFERENCE
VOLTAGE
1A
2A
2B
2C
2D
1B
1C
1D
3A
3B
3C
3D
4A
4B
4C
4D
3
2
1
4
11
U501A
NJM2902
5
6
7
U501B
NJM2902 12
13
14
U502D
NJM2902
10
9
8
U502C
NJM2902
10
9
8
U501C
NJM2902
12
13
14
U501D
NJM2902
3
2
1
4
11
U502A
NJM2902
5
6
7
U503B
NJM2902
5
6
7
U502B
NJM2902
3
2
1
4
1
1
U503A
NJM2902
12
13
14
U503D
NJM2902
10
9
8
U503C
NJM2902
3
2
1
4
11
U504A
NJM2902
5
6
7
U504B
NJM2902
10
9
8
U504C
NJM2902
12
13
14
U504D
NJM2902
MICG
A
1
IN
7
A
2
IN
9
C
M
P
R
S
I
N
3
C
M
U
T
E
4
E
M
U
T
E
12
E
X
P
I
N
14
P
T
8
A
1
O
U
T
6
A
2
O
U
T
10
C
M
P
R
S
2
E
X
P
O
U
T
15
C
M
P
R
S
F
IL
T
5
E
X
P
F
IL
T
11
N
C
13
V
C
C
16
G
N
D
1
U500
MC33111
R511
1K
R512
1K
R524
100R
R554
R0
E510
10uF/10V
5C
C500
103P
E500
1uF/16V
AUD
VLI
R525
100K
R526
180K*
R501
1K
E504
1uF/16V
VLI
C510
102P
AUD
C511
102P
PASS
R556
R0
C562
473P(J)
CMIC
CMIC
VB
E501
1uF/16V
R513
1K
MICM
R529
24K*
C520
104P(J)
C512
102P
R555
5K1
C535
474P(J)
C534
474P
COPMANDER
CMI
CMI
PASS
DTMF
BUFFER AMP
E513
10uF/10V
VB
FB
ACS
ACS
OPK
OPK
8C 5C
C513
102P
A
1
C
3
B
2
J501
PHONE-DC
R505
10K
PST
PST
POWER-CONTROL
R503
10K
C
H
1
-O
U
T
1
P
O
W
E
R
G
N
D
2
C
H
2
-O
U
T
3
V
C
C
4
F
IL
T
E
R
5
P
.P
6
S
T
A
N
D
B
Y
7
C
H
2
-I
N
8
P
R
E
G
N
D
9
C
H
1
-I
N
10
U506
LA4600
5C
E520
10uF/16V
E519
4.7uF/16V
R585
8K2
SPM
E511
10uF/10V
R514
1K
C533
681P
AF/SQ
R551
3K9
R548
2K2
R549
2K2
TEMP
R541
1K
1
1
2
2
3
3
D500
NOUSE
R540
NOUSE
R542
NOUSE
C528
NOUSE
R543
NOUSE
C529
NOUSE
R502
10K
E517
2.2uF/16V
AFWN
R559
R0
R545
12K
R546
473P
R504
10K
E523
2.2uF/16V
RX-IN
RX-OUT
TX-IN
TX-OUT
R586
10K
C564
104P(J)
RX-A
VR500
47K
1
2
3
4
5
6
J503
CON6
5C
RX-A
R587
560R
C563
103P
PTT
TX-A
AFM
PTT
R589
150K
C565
104P(J)
TX-A
.
.
.
SCHEMATIC DIAGRAM
34
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