XV-DV333
101
5
6
7
8
5
6
7
8
C
D
F
A
B
E
• The base voltage at Q3631 is a voltage between Points
A
and
B
divided by R3633 and R3634. As this voltage is negative (-) in Normal
mode, Q3631 is off.
When the AC power cord is disconnected and there is no AC power input, the base voltage at Q3631 b0.6 V or more, and Q3631
is turned on. Then, the operations below follow.
(1) SP Relay
Q3632 (E2, C2, B2), Q3633, and Q3636 (E, C, B) are turned on, the line to activate the power amp mute becomes low level, and the power
amp mute is turned on.
(2) HP MUTE
Q3635 is turned on, and the MUTE circuit for HP is turned on.
Other protection circuit
AC detection circuit
7
This is a protection circuit that prevents popping sounds in the Speaker and Headphones output when the AC power cord is connected or
disconnected.
POWER Assy
J
• The voltage at Point
A
is a DC voltage which has been generated by half-wave rectification on the minus side of the AC power.
• The voltage at Point
B
is approx. 5 V.
Q3633
Q3636
Q3632
Q3635
Q3631
D3636
D3634
R3634
4.7k
R3633
10k
D3635
DAN202K
R3641
10k
B
C
C2
B2
E2
E
+
RYF
to SP Relay Circuit
to SP Relay Circuit
to HP MUTE
VD+5
VH+
R3632
33k
R3631
33k
R3642
1k
RYR
ACB
B
A
D3631
MTZJ5.1A
D3633
D3632
C3631
2.2/50
R3635
3.3k
Содержание XV-DV333
Страница 19: ...XV DV333 19 5 6 7 8 5 6 7 8 C D F A B E R CY B Cb G Y C V S_C S_Y D B 1 2 B 1 2 DVDM ASSY AWM7964 ...
Страница 20: ...XV DV333 20 1 2 3 4 1 2 3 4 C D F A B E 3 4 DVDM ASSY 2 2 A B 2 2 B 2 2 DVDM ASSY AWM7964 D ...
Страница 22: ...XV DV333 22 1 2 3 4 1 2 3 4 C D F A B E 3 5 DSP ASSY CN951 D F 1 4 CN5620 C DSP ASSY AWX8587 C ...
Страница 38: ...XV DV333 38 1 2 3 4 1 2 3 4 C D F A B E 3 13 DISPLAY and LED ASSYS H CN5611 F 1 4 DISPLAY ASSY XWZ3979 H ...
Страница 50: ...XV DV333 50 1 2 3 4 1 2 3 4 C D F A B E SIDE B F CN5611 CN5502 CN5501 ...
Страница 51: ...XV DV333 51 5 6 7 8 5 6 7 8 C D F A B E SIDE B CONTROL ASSY F XNP3085 C F CN5701 CN5620 CN5613 CN5612 01 ...
