Amplifier System Protection Operation Specification - Pioneer VSX-D712-K Service Manual

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7.3.4 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION

1. DC-abnormality detection
A
In the case of simultaneous detection with the overload protection circuit,
DC-abnormality detection is performed preferentially to overload detection.
When a DC abnormality is detected, A.MUTE* is turned
The abnormality continues for 3 seconds.
B
The power is shut off.
The power key is disabled and Standby LED blinks.
But be switched on with the following methods.
1 TESTMODE ON (A55F+A55F)
2 When power off, push FRONT ENTER key + ADVANCED SURROUND key continuously 2sec.
(2: When a DC abnormality is detected and the power is shut off.)
2. Overload detection
C
When an overload is detected, A.MUTE* is turned on,
The abnormality continues for 3 seconds.
The power is shut off.
3. Board detection
D
In the case of simultaneous detection with the overload protection circuit,
Board detection is performed preferentially to DC-abnormality detection and Overload detection.
When an boad error is detected, A.MUTE* is turned on,
The abnormality continues for 3 seconds.
E
The power is shut off.
F
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on, speaker relay is turned off, then
"AMP_ERR" flashes on the display.
↓
↓ Continues.
↓
speaker relay is turned off, then
"OVERLOAD" flashes on the display.
↓
↓ Continues.
speaker relay is turned off, then
"BOAD ERR" flashes on the display.
↓
↓ Continues.
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*A.MUTE : Audio mute command
The power is shut off even if the
The power is shut off even if the
VSX-D712-K
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↓ Recovery
The program restarts.
↓ Recovery
unit recovers.
↓ Recovery
unit recovers.
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