Service Mode - Pioneer A-70DA-K Service Manual

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1.6 Power PROTECTION (D-AMP side)
MUTE ON & PROTECTION RELAY OFF are carried out immediately after the detection and the
power is turned OFF.
If the power supply is automatically turned OFF after the power PROTECTION is detected, all key operations
are prohibited (Prohibit the power supply is turned ON).
For turning ON the power supply again, refer to "3. How to reset the prohibition of power ON" shown below.
2. Keeping the prohibition of power is turned ON after 1.1.1 AMP failure is detected and
1.4 power PROTECTION is detected
If the power supply is automatically turned OFF after AMP failure is detected and power PROTECTION is detected,
all key operations are prohibited (Prohibit the power supply is turned ON).
The power supply is turned ON prohibition status is kept even if the backup is carried out and the power cord is
disconnected and inserted.
For turning ON the power supply again, refer to "3. How to reset the prohibition of power ON" shown below.
3. How to reset the prohibition of power ON
Press Front Key [ POWER AMP DIRECT ] + [ SPEAKER B ] at the same time for 2 seconds continuously.
The key prohibition mode after 1.1.1 AMP failure is detected and 1.4 power PROTECTION is detected is canceled
and the power is turned ON.
4. STANDBY LED display after PROTECTION is detected
In above each PROTECTION operations, kind of protection circuit are identified by blinking timing of STANDBY LED.
Both of illumination time and curfew period blink together with 400 msec, repeat in the interval 2 sec.
The blinking of LED is continued until the power is turned ON again.
For the blinking specification of LED, refer to "Protect LED display specifications" shown below.
400ms
Temperature
On
(XTEMP)
Protection
Off
(Blinking : 1 time)
On
Overload (XOL)
Protection
Off
(Blinking : 2 times)
DC DETECT
On
(XDC(first))
Protection
(Blinking : 3 times)Off
DC DETECT (XDC)
On
Protection
( Can't power-on)
Off
(Blinking : 4 times)
Power (Voltage)
On On
Protection
( Can't power-on)
Off
(Blinking : 5 times)
Zobel (XDSABL) On On On
Protection
(Blinking : 6 times) Off
Power (XB)
On On On On On
Protection
( Can't power-on)
Off
(Blinking : 7 times)

6. SERVICE MODE

There is no information to be shown in this chapter.
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6
Protect LED display specifications
interval : 2.0Sec
interval : 2.0Sec
interval : 2.0Sec
interval : 2.0Sec
A-70DA-K
6
7
interval : 2.0Sec
interval : 2.0Sec
interval : 2.0Sec
7
8
A
B
C
D
E
F
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