Tel 13942296513; Specification Of Protective Operation; Discharge Of Power Amplifier - Pioneer A-A9-J Service Manual

1

7.2 SPECIFICATION OF PROTECTIVE OPERATION

QQ
3 7 63 1515 0
*When SPEAKER OUT is overloaded, turn off SPEAKER RELAY immediately and turn off power supply
RELAY. Then, blinks the STAND BY LED.
A
*When DC voltage is detected at SPEAKER OUT, turn off SPEAKER RELAY and power supply RELAY.
Then, blinks the STAND BY LED.
After that, normal operation MODE will be resumed by turning power supply SW off/on.
Similarly, normal operation MODE will be resumed by reconnecting the power cord.
B
C

7.3 DISCHARGE OF POWER AMPLIFIER

1. Turn off the power of the product.
TE
L 13942296513
2. Discharge both ends of capacitor of Power Assy by short-circuiting (connector GND and +, connector GND
and -) using a resistor with 200Ω/10W (and above) for 30 seconds.
D Resistor with 200Ω/10W
-
GND
+
GND
E
www
F
56
1
http://www.xiaoyu163.com
2
STANDBY LED
REG IC Assy
x ao
y
. i
2
http://www.xiaoyu163.com
3
8
Q Q
3 6 7 1 3
Resistor to be used
u163
.
A-A9-J
3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Resistor with 200Ω/10W
+
GND
-
GND
m
co
4
9 9
2 8 9 9