Microlab H-300 Schematics
654321
D
C
B
CE
+5V
SDA
SCL
DO
CON3
~3.5V
~3.5V
DC-27V
MUTE
GND
C206
CC104
5
4
3
2
1
CON2
C201
100UF/16V
5
4
3
2
1
L201
4.7UH
+5V VDD
C202
CC104
RX1
VCC1GND2OUT
3
C207
100UF/35V
R201
10K
C205
104
L202
4.7UH
1
2
3
4
5
6
DOUT
7
DIN
8
9
10
MUTE
11
CE
12
SDA
13
SCL
14 15
DO
CLK
STB
IC201
2SC2604
C208
CC104
F2
F2
C204
28
27
26
25
24
23
22
21
20
19
18
17
16
Y201
6MHz
30pF
C203
30pF
P16
R204 56K
STB
CLK
DIN
DOUT
P15
P18
VFD HNVCLLSM27
P10
P11
P12
P13
P14
P17
P18
P17
P14
P15
P16
37
G8
38
G7
39
G6
40
G5
41
G4
42
G3
43
G2
44
G1
46
47
48
49
50
52
9
8
7
6
5
4
3
2
1
P8
P9
P7
P10
P11
P12
P13
14
34
45
G8
G7
VEE
VDD
G6
G5
G4
G3
G2
G1
LED5
LED4
LED3
LED2
LED1
OSC
STB
CLK
NC
DIN
DOUT
SW4
SW3
SW2
SW1
VDD
VSS
51
P4P5P6
33
P1P2P3P4P5P6P7P8P9
VDD
P1P2P3
IC203
S20/G9
S19/G10
S18/G11
S17/G12
S16/G13
S15/G14
S14/G15
S13/G16
S12/K12
S11/K11
S10/K10
S9/K9
S8/K8
S7/K7
S6/K6
S5/K5
S4/K4
S3/K3
S2/K2
S1/K1
KEY4
KEY3
KEY2
KEY1
PT6311
F1
F1
G10
G11
G12
G9
G8
G10
36
G9
35
G10
32
P1
31
P2
30
P3
29
P4
P5
28
P6
27
P7
26
P8
25
P9
24
P10
23
P11
22
P12
21
P13
20
P14
19
P15
18
P16
17
P17
16
P18
15
13
12
11
10
G1G2G3G4G5G6G8G7G9
G1G2G3
G4G5G6
G7
P17
P18
D201
D202
1N4148
1N4148
CON5
1
2
3
4
5
CON6
SW4
vol -
SW5
vol +
1
2
3
4
5
SW3
out PUT
SW2
in put
SW1
st-by
D
C
R208
33K
R207
33K
B
R206
33K
R205
33K
H-300
面板电原理图
A
1 2 3 4 5 6
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com
Title
H-300 DISP
Number RevisionSize
B
Date: 20-Apr-2006 Sheet of
File: D:\AN1\H-300.ddb Drawn By:
V1.0SDP1-0X25R-A51/52
1
WANGZHAO
A
654321
47K
R2
47K
R2'
47K
R4
47K
R4'
C1
10UF
C1'
10UF
C2
10UF
C2'
10UF
~3.5V
~3.5V
JK5'
1
2
3
4
R30
1K
+5V
R
GND
L
R5
8.2K
JK5
1
2
3
4
TO RADIO
D103
27V
MC472
MC683
MC683
+5V
JK1
SCL
SDA
C3
1
1UF/50V
RADIO L
C4
C5
C6
C7
MC153
REFIN VCC
2
L1 IN
3
L2 IN
4
L3 IN
5
L4 IN
6
L5I N
7
TREL
8
BASSL1
9
BASSL2
10
PSEUDO
11
LOUT
12
GND
13
NC
14 15
NC
R
L
-27V
C36
100UF
50V
TO VFD
S-4/9
1
2
3
4
MUTE
-27V
+5V
CE
DO
C37
CC104
6V2/0.5W
ZD104
S- 5/9
1
2
3
4
5
R2S15900U1
R1 IN
R2 IN
R3 IN
R4 IN
R5 IN
TRER
BASSR1
BASSR2
ROUT
SCL
SDA
REXT
CEXT
4.7UF/50V
C38
28
27
26
25
24
23
22
21
20
19
18
17
16
R33
+VA/9V
470
RADIO R
C8 MC472
C9 MC683
C10 MC683
R34
470
JK6
R
CD
D
C
JK4
5
4
3
2
1
TO RADIO
B
DO
CL
DI
CE
GND
T?
DO
CL
DI
CE
GND
L
R
AUX1
L
JK4'
~27V
TRANS1
T?
TRANS1
A
1 2 3 4 5 6
~3.5V
R1
1K
C01
CC101
R1'
1K
C01'
CC101
R3
1K
C02
CC101
R3'
1K
C02'
CC101
5
4
3
2
1
RADIO TUNER
D1-D4
1N4004
R31
100
ZJ828
C35
100UF
R32
100
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com
C12
10UF
R8
R9
47K
10K
+VB
C12'
10UF
R8'
47K
+VB
C15
R6
8.2K
10UF
R7
10K
RADIO
+VB
R20
68/1W
100UF/25V
R21
220/1W
100UF/25V
R24
0-33/1W
*
100UF/25V
C21
C27
C30
C11
MC224
+VP
2
1
C20
100UF/25V
C25
CC104
R9'
10K
6
5
+VA
7809
7805
7812
U6
U7
U7
5
6
3
2
U3BB
4558
1
2
3
4
SDA
MC4558
+VA
84
U2A
MC4558
7
PT2257
U4
C22
100UF/16V
C28
100UF/16V
C31
100UF/16V
U2B
C26
100UF/16V
R14
47K
R15
10K
SCLSDA
VD/+5V
VD/+12V
C16
MC224
R16
10K
VA
C19
1UF
R13'
10K
R13
10K
MC104
R17
100
C13
0.1UF
C13'
0.1UF
2
3
C17
R11
22K
R11'
22K
8 4
C18
10UF
U3AA
4558
R18
100K
D
JK7
L
1
2
R
3
GND
4
SUB
C
1
B
7
R10
10K
1
R10'
10K
8
7
6
5
SCL
R19
*
C29
CC104
C32
CC104
0-10
VA
C26'
100UF
C23
CC104
Title
B
Date: 20-Apr-2006 Sheet of
File: D:\AN1\H-300.ddb Drawn By:
R22
3.3K
VB
R23
3.3K
C24
100UF/16V
A
H-300 & X24 PREAMP SCH
Number RevisionSize
05.5.28L.M.An
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