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HCD-EP50LIV
20
20
T6, TC1
AM TRACKING
T8
AM FREQUENCY
COVERRAGE
AM IF
12.5
11.3
(0)
12 (0.1)
12.2 (0.1)
0.1 (0.7)
3.6
7.7 (8)
3.6
3.6
5.8
5.8
7.7 (8)
7.7 (8)
1.2
0.5 (0)
0
0
6.6 (3.8)
3.7
4.3
4.3
4.3
4.3
3.3
3.3
2.9
3.9
0 (0.6)
0 (0.6)
2.8 (3.6)
2.8 (3.6)
3.7
3.7
2.1
6.7 (0.1)
0.1
(0.7)
6.7
0
0
0 (2.3)
2.3 (0)
4.9
0.9
0.9
1.3
2.4
2.3
0
0
4.9
4.9
0.1 (4)
0
4.9
4.1
4.9
0.7
0.1
0
0
0
0
0
0
0
0
4.4
4.4
4.4
4.5
4.5
8.1
4.5
0
5
0 {0} [0] <4.6>
0 {0} [4.6]
<0>
0 {4.6}
[0] <0>
4.6 {0} [0] <0>
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
4.6 {0} [0] <0>
0 {4.6} [0] <0>
0 {0} [4.6] <0>
0 {0} [0] <4.6>
7.7
5
0
AM ANT
CN12
FM ANT
75
Ω
COAXIAL
CN13
i
i
i
RR-CH
i
RL-CH
i
TR-CH
i
TL-CH
i
RF INPUT
i
GND
i
GND
i
GND
i
VT
i
VCC
i
IF OUTPUT
i
OSCO
*
*
SUPPLIED AS THE
ASSEMBLED BLOCK
Q4, 10
B+ SWITCH
AM RF
U1
FM/AM IF AMP,
AM RF AMP/MIX/OSC,
FM/AM DET, MPX
U1
LA1837
Q3
FM/AM BAND
SELECT SWITCH
Q17
STEREO/MONO
SWITCHING
Q1, 11
B+ SWITCH
U2
FM/AM PLL
U6
INPUT SELECT SWITCH,
ELECTRICAL VOLUME
U3
LINE AMP
Q13, 16
MEGA BASS CONTROL SWITCH
Q6, 7
MUTING
i
i
i
STR
i
POWER-FAIL
i
POWER-LINE
i
REC. LED+
i
BEAT
i
MUTE-LINE
i
R-CH
i
L-CH
CN4
3P
RDS_DA
CN11
7P
RESET
DA
CLK
MAIN BOARD
(1/3)
TP
(AM VT)
CN5
11P
0.1
0.1
0.001
0.001
50V
50V
0.022
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
50V
0.033
0.047
0.0056
0.022
0.047
0.1
50V
0.1
0.1
0.1
0.1
0.1
0.1
50V
0.047
0.0056
0.022
0.0047
0.033
50V
50V
0.1
50V
0.047
50V
0.047
0.047
50V
50V
50V
50V
0.0068
0.0047
0.0047
0.0047
0.022
L. P. F.
50V
50V
0.033
16V
0.0068
L. P. F.
0.0047
0.022
0.047
50V
0.047
50V
0.001
0.047
0.001
R239
3.3M
1/2W
0.047
16V
0.047
0.001
TP
(FM VT)
1SS133T
1SS133T
1SS133T
1SS133T
1SS133T
16V
0.47 50V
0.47 50V
1SS133T
1SS133T
6-7.
SCHEMATIC DIAGRAM – MAIN Board (1/3) –
•
See page 28 for Waveform.
•
See page 28 for IC Block Diagrams.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299