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

1

7.3.4 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION

QQ
3 7 63 1515 0
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,
TE
L 13942296513
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.

7.4 CLEANING

www
Before shipping out the product, be sure to clean the following positions by using the prescribed cleaning tools:
F
Position to be cleaned
Fans
86
1
http://www.xiaoyu163.com
2
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.
x ao
. i
Cleaning tools
Cleaning paper : GED-008
2
http://www.xiaoyu163.com
3
*A.MUTE : Audio mute command
Q Q
3 6 7
The power is shut off even if the
The power is shut off even if the
u163
y
VSX-D712-K
3
4
2 9 9 4
8
↓ Recovery
The program restarts.
1 3 1 5 0 5 8 2 9
↓ Recovery
unit recovers.
↓ Recovery
unit recovers.
m
co
.
4
2 8
9 9
9 4 2 8 9 9