Schematic Diagram - Poweramp Board (2/2) - Sony HCD-GT444 Service Manual

Q Q
3 7 6 3 1 5 1 5 0

7-23. SCHEMATIC DIAGRAM - POWERAMP Board (2/2) -

1 2
A
POWERAMP BOARD (2/2)
∗ C826, 827
47 63V (GT111)
47 100V (GT222/GT444/GT555)
B
(GT111/GT444)
JL851
C
JW802
JW801
D
R838
100k
16.5
0 R883
2.2k
Q800
2SC5625
0
OVER
LOAD
DETECT
E
T E
L 1 3 9 4 2 2 9 6 5 1 3
R836 R859 R837
33k
22k 22k
R843
R842
2.2k
F 2.2k
1W
1W
MC2836
JW883 30.1
(GT222/GT555)
Q813
2SC3052EF-T1-LEF
STANDBY SWITCH
G
R845 R844
33k 33k
H
I
w w w
J
K
HCD-GT111/GT222/GT444/GT555
3 4 5 6
21 POWERAMP (Page 42)
BOARD
(1/2)
C826
R865
∗
100
R832
0.22
R831 5W
0.22
5W
R830 R884 ∗
R885
47k 47k
47k (GT444)
56k (GT555)
16.5
0
Q801
2SC5625
OVER
0
LOAD
DETECT
R860
33k
R851
10k
D802 0
0
Q809
2.8
ISA1235AC1TP-1EF
0
Q806, 809-811
R856
3.3 PROTECT
47k R863 DETECT
C828
1k
22
35V
R846
1k
0 0
R864
1k
0
R857
22k
Q810 Q811
2SC3052EF-T1-LEF 2SC3052EF-T1-LEF
R829
560 (GT555)
x a o
680 (GT444)
R827 R828
y
∗ ∗
. i
C833 C835 C818 C819 C820 C812 R824 C814 R825
0.1 0.1 47 47 47 1000p 47k 1000p 47k
50V 50V 50V
∗ R827, 828 (GT444/GT555)
820 (GT111/GT444)
1k (GT555)
1.2k (GT222)
http://www.xiaoyu163.com
7 8 9
(GT444/GT555)
R833
0.22
5W
R835
2.2k
JL850
JW800
(GT111/GT222)
∗
R866
36k (GT444/GT555)
39k (GT111/GT222)
R866
∗
Q802
2SC5625
OVER
C838 C837
LOAD
0 0.1 0.1
DETECT
C839 C840
R889 R890 R881
R868
0.1 0.1
33k 22k 27k
33k
0
16.5
R875 R879 R877
10 10 10
R839
100k R871 R874 R869
10 10 10
R885 D811
∗ MA2J1110GLS0
Q Q (GT444/GT555)
3 7 6
D807
MA2J1110GLS0
C830
2.2
50V
Q803
OVER
R850 LOAD
4.7k
DETECT
0 0
0
0
0.2
R858
2.2k
0
0
C829
100
10V
Q812
2SC3052EF-T1-LEF
R822
C811
560 (GT555)
10
680 (GT444)
50V
(GT444/GT555)
∗ R821, 823
820 (GT444)
1k (GT111/GT222/GT555)
R823
C810
∗
10 50V
R821
C809
∗
10
50V
u 1 6 3
C806 C805
3300 3300
R892 R891
R826
50V 50V C803 C804
100k 100k
47k (GT444) ∗ ∗
56k (GT555)
(GT444/GT555) (GT222/GT555) ∗ C803, 804
2200 63V (GT111)
2200 70V (GT444)
2200 80V (GT222/GT555)
43 43
2 4
8 9 9
10 11 12 13
L801 1.7uH
RY800
R840 10 R808 10
R810 10 R80910
L802 1.7uH
R841 10 R811 10
R813 10 R812 10
D803
MA2J1110GLS0
R814
100
R878
10
R872
10
3 1 5 1 5 R804 0 0 8 9
100
0
Q804
2SC3052EF-T1-LEF
RELAY DRIVE
0 R805
100
0
0
0
R815
Q815 100
2SC3052EF-T1-LEF
0
0
0
JR891
R820
0
15k
R867
0.2
1k
0
Q814
2SC3052EF-T1-LEF
R895 R896
1k 22k
Q812, 814, 815
DC DETECT
R899 15k
D801
D10XB20
m
~
~
c o
~
D812
MC2838-T112-1
R898 ~
D800
15k
D10XB20
.
R897
C843 C802 C801 C807 C808
22k
10 0.1 0.1 0.1 0.1
50V 100V 100V
(GT222/GT555) ∗ CN801
11P (GT111/GT222)
13P (GT444/GT555)
HCD-GT111/GT222/GT444/GT555
2
8 9 9
14 15
JK800
-
R
+
FRONT
SPEAKER
-
L
+
NO800
7P
1 RLY-
Q
3 RLY+
4 SW OUT
SW
5
SW OUT
JACK
6 SW-SP_GND BOARD
CN890
2 4 9 7 SW-SP_GND 8 2 9 9
(Page
40)
(GT444/GT555)
EP800
(CHASSIS)
CN801
∗
(GT444/GT555)
JL852
13 SW IN
JL853
12 SW ON/OFF
JL854
11 SPK RELAY
JL855
10 POWER GND
JL856
HP-L
9
H
JL857
HP GND
8
JL858
7 HP-R
MAIN
JL859
BOARD
6 UNREG+16V
JL860 (3/4)
CN479
5 PROTECT
JL861
(Page 38)
4 STK MUTE
JL862
L-IN
3
JL863
PREGND
2
JL864
1 R-IN
(GT111: E2, E3, E51)
(Page
NO801 R TRANS1
7P BOARD
49)
CN903
JL865
1 AC-VH
JL866
3 AC-VL
JL867 (GT222/GT444/GT555)
4
GND
(Page
JL868
S TRANS2
5 GND BOARD
51)
JL869
CN903
6 AC-VL
JL870
7 AC-VH
(GT111: AEP, RU, AR)
(Page
TRANSX
T
53)
BOARD
CN903