XV-EV61
133
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Protection circuit that activates against a DVD ERR error
6
The DVDM monitors the voltage of the main power supply by VDET signals.
In Normal mode, the VDET signal is at the MID level (3.3 V). In the following conditions, the VDET signal level becomes L or H, and the
microcomputer is notified of this abnormality.
DVDM Assy
B
IF/AF Assy
E
10k
10k
4.7k
47k
Q924
Q923
470
D922
Q922
Q925
D921
UDZS4.7B
Q926
Q921
V+5
V+12
470
220
17
1M
0.1
V+3R3
15k
10k
V+12
V+5
V+6
0
10k
47k
VPR+8
V+12
V+12
47k
0.01
VDET
µ
com
IC5501
PDC108A:EV61
PDC109A:EV31
Items to be detected by VDET
(1) When the power voltages inside the DVDM become abnormal, as shown in the table below
(2) When the VDET signal to the microcomputer is interrupted because of defective soldering of the 30-pin connector or incomplete
insertion of FFC
→
The VDET level is lowered by the pull-down resistor (1 Mohms) on the side of the microcomputer.
Status Power
Voltage
Operation
VDET voltage
Q923
Q924
Q922
Q921
D921
D922
Q926
Q925
In Normal mode
off
off
off
off
off
off
off
off
Mid
When an abnormality is generated.
VDVD+12
<1V
(on)
(on)
(on)
(off)
off
on
off
off
L
>15.5V
off
off
off
off
off
off
on
on
L
VPR+8
<5.2V
−
off
off
off
off
−
on
on
L
>12.6V
−
on
on
on
on
−
off
off
H
V+6
<3V
−
−
−
−
−
−
on
on
L
V+5
<3.6V
−
off
off
off
off
−
on
on
L
>6.6V
−
on
on
on
on
−
off
off
H
V+3R3
<2.5V
−
−
−
−
−
−
−
−
L
>4.25V
−
−
−
−
(on)
−
−
−
H
Содержание XV-EV31
Страница 34: ...XV EV61 34 1 2 3 4 1 2 3 4 C D F A B E 3 7 DVDM ASSY 3 3 B 3 3 B 2 3 ...
Страница 50: ...XV EV61 50 1 2 3 4 1 2 3 4 C D F A B E 3 15 MIC ASSY J H P ASSY XWZ3731 O O K CN3008 JA5401 JA5402 ...
Страница 55: ...XV EV61 55 5 6 7 8 5 6 7 8 C D F A B E AUDIO SIGNAL ROUTE FL M The power supply is shown with the marked box ...
Страница 58: ...XV EV61 58 1 2 3 4 1 2 3 4 C D F A B E 3 19 PRIMARY ASSY P J3009 K 1SS133 1SS133 ...