Table of Contents
Advertisement
HCD-EP50LIV
Q Q
3 7 6 3 1 5 1 5 0
6-9.
SCHEMATIC DIAGRAM – MAIN (3/3)/HEADPHONE Boards –
MAIN BOARD
(3/3)
i
6
i
MAIN BOARD
(1/3)
(Page 20)
i
U8
T E
L
1 3 9 4 2 2 9 6 5 1 3
+5V
REGULATOR
5.7
8
O G I
0.7
1SS133T
1SS133T
(Page 20)
i
3.9k
4
MAIN BOARD
(1/3)
i
7
1SS133T
i
MAIN BOARD
(2/3)
(Page 21)
w w w
1SS133T
0.5
14
{9.4}
{13}
0
Q9, 12
{10}
+8V
REGULATOR
0
4
{10.2}
{10.2}
14
{9.8}
U10
0
14 {0.1}
{0.7}
Q15
+9V
536N
REGULATOR
14
REGULATOR
9.1
{13}
O G I
CONTROL SWITCH
68
1W
14
14
14
12.1
{13}
{13}
{13}
O G I
13.3
{12.5}
0.1
0.7
Q19, 20
B+
R163
SWITCH
1SS133T
5.6k
U7
50V
+12V
REGULATOR
1SS133T
Q47
+12
REGULATOR
13.2
2SD1616
12.5
{13}
13.6
{13.1}
x
a o
y
.
i
http://www.xiaoyu163.com
8
U11
POWER AMP
50V
0.7
0
Q22
0
2SD1616
MUTING
1.1
Q21
2SD1616
1.1
MUTING
0
0
0.7
50V
0.001
Q
Q
3
7
6
3
0.1
0
0.001
0.6
50V
0
50V
0.001
0.6
u 1 6 3
.
22
22
http://www.xiaoyu163.com
2
4
9
9
8
17.5
17.5
+
–
–
+
17.5
GND
VCC
35.5
U9
1
5
1
5
0
8
9
2
4
8.4
HEADPHONE AMP
VCC
3.7
CN
5P
3.7
0.001
GND
8
1
CN2
4P
–1
–2
AM FREQ
STEP
9kHz
r
10kHz
m
c o
2
9
9
CN17
R
SPEAKER
(IMPEDANCE USE 8Ω)
L
9
8
2
9
9
HEADPHONE BOARD
8
1
7
9
4
5
JK401
6
PHONES
1
2
5
3
0.022
0.022
E
POWER
BOARD
CN601
(Page 27)
F
DISPLAY
BOARD
(Page 25)
Advertisement
Table of Contents
