Schematic Diagram - Surround Board (1/2) - Sony HCD-ZX80D Service Manual

HCD-ZX80D/ZX100D
Ver. 1.1
7-33. SCHEMATIC DIAGRAM – SURROUND Board (1/2) –
A1
A2
A3
A4
(Page 57)
NO800
5P
SW RC GND
VIRTUAL GND
-VL
+VL
AC CUT DETECT
(Page 53)
(ZX80D)
RY862
NO801
-1
5P
SW +
-2
(Page 57)
SW -
D811
MA111-TX
(Page 51)
Q814
2SC2712-YG-TE85L
(ZX100D)
RELAY DRIVE
Q815
2SC2712-YG-TE85L
PROTECT SWITCH
HCD-ZX80D/ZX100D
(1/2)
R892
∗R862
10
R860 R861
1/2W
82 1/2W(ZX80D:MX/ZX100D:MX)
56k 47k
ZX80D:US,E2,E3,E13,E51/
100 1/2W
ZX100D:E2,E3,E51,SP,MY
R862
∗
2SC3906K
OVER LOAD
R863
2.2k
C889
0.068
R864
22k
C888
0.068
R865
1k
2SC3906K
R866
OVER LOAD
22k
(ZX100D)
R827 R828
100 100
R838
0.22
5W
C826 C825
100 100
50V 50V
R888
0.22
5W
R839 R889
1k 1k
R842
10
1/2W
C839
0.068
C838
0.068
D850 R890
MA111-TX 22k
Q800
R840
DETECT 22k
R841 D800
100k MA111-TX
R891 D812
100k MA111-TX
Q850
DETECT
56 56
POWER AMP
IC800
STK403-070(ZX80D)
STK403-100(ZX100D)
R804 R805 C803 C853
1 1 100p 100p R850
1k
R851 C851
C850 47k 0.01
4.7
R801 50V
47k
(ZX100D)
C807
(ZX100D) C801 R800 1
1 1k
C804
0.1
C800
4.7 50V
C852 R852
100 270 C802
10V R802 100
∗
R802 ∗
10V
270(ZX100D)
1k(ZX80D)
Q810
2SD2114
MUTING
C808 R808 C843
8.2p 47k R843 4.7
47k 50V
R858
47k
R814 C858
10k 8.2p
Q812
2SC3906K
STANDBY SWITCH
C820
10
50V
R817 D810
10k MA111-TX
R812
2.2k
C806
R807 2.2
47k R806 50V
1k
A5
R803
2.2k
A6
(Page 57)
A7
B791
C805
0.1 (CHASSIS)
A8
A9
(Page 57)