Pioneer RMX-1000 Service Manual page 30

1
A
Circuit diagram of the voltage-monitoring section
VOLTAGE DETECTION CIRCUIT
V+3R3D V+6D
V+3R3D V+6D
B
GNDD GNDD
V+15A V+5A
V+15A V+5A
C
GNDP
D
Abnormal Voltage Detection Values
The threshold values for activation of the voltage detection circuit for each power-supply IC are indicated in the table below.
The threshold values may vary slightly.
Power-supply Detection of
IC excess voltage
V+15A N/A
V-15A N/A
V+5A 6.35 V or higher
E
V+6D 8.51 V or higher
V+3R3D 4.38 V or higher
F
30
1
2
V+6D V+3R3D
V+6D V+3R3D
GNDD GNDD
GNDP
Detection of
voltage decrease
11.3 V or less
-9.28 V or less
N/A
4.29 V or less
2.15 V or less
2
3
GNDD
Q 1 0 1 1
L T C 0 2 4 E E B
R 1 0 2 4
0
GNDD
V+3R3E
Q 1 0 1 0
L S C R 5 2 3 U B
GNDD
V-15A
GNDD
V-15A
GNDP
RMX-1000
3
4
V+3R3E
To K0R UCOM
R 1 0 3 1
F A U L T _ D E T
2:13K
1 0 0
4