Pioneer VSX-D2011-S Service Manual page 115

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4 Diagnostic mode
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This mode is only for servicing and checking the circuit design,
and not open to users.
When the STEREO/DIRECT key and TONE + key are both held
pressed for 2 seconds in Standby mode, the power is turned on,
and the number of times of each defect or Speaker relay off by
abnormality detection is sequentially displayed on the FL display.
Displayed items:
• DC detection
• Overload detection
• Fan detection
• Temperature detection
Hold the STEREO/DIRECT key and TONE + key pressed for 2
seconds in Standby mode.
When the MULTI CH IN key and TONE − key are both held
pressed for 2 seconds in standby mode, all clear the counter for
detection.
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Protection Process List
Item
To detect amplifier damage
(defect status) A process to
DC
protect speakers
detection
(for protection of connected
external devices)
To detect overloading
(abnormal status) With low-
AMP
load driving or a short circuit
overload
of the speaker terminals (for
protection of the amplifier)
Protection function against a
Fan
temperature rise at the heat
control
sink
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To know that the rotating fan
Fan stop
is forcibly stopped
.
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PROTECT CHECK
DC 003
PROTECT CHECK
OVERLOAD 002
PROTECT CHECK
FANTOP 000
PROTECT CHECK
TEMP 000
Purpose Detection Method
Detects when the DC_DET port
becomes "L".
Detects when the AMP_OL port
becomes "L" (checks by interrupt).
HY, F : Detect temperature
more than 100°C.
KU, J : Detect temperature
more than 125°C.
HY, F : Detect temperature
of 90 to 100°C.
KU, J : Detect temperature
of 110 to 125°C.
HY, F : Detect temperature
of 80 to 90°C.
KU, J : Detect temperature
of 80 to 110°C.
Detect temperature of 70 to 80°C.
A condition except the above.
Detects when the FAN_DET port
x ao
becomes "L".
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Process
Turns muting on and
speaker relay off, then
turns off the power after 3
seconds.
Turns muting on and
speaker relay off, and
immediately turns off the
power.
Turns muting on and
speaker relay off.
Rotate the fan
Rotate the fan
Rotate the fan
Fan is leading hold
Stop the fan
Turns muting on and
speaker relay off, then
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turns off the power after 3
seconds.
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VSX-D2011-S
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Warning Indication
Flashing "AMP ERR" for
Once detected and turned
3 seconds.
the power off, input a key
Flash the standby LED
never again.
after the power off.
None
Continue flasing with
"OVERHEAT"
Mute, relay and warning
indications is leading hold.
Mute off & relay on
(normal mode)
If the FAN_DET port
m
becomes "H" within 3
seconds, the unit resets
Flashing "FAN STOP"
co automatically. After the
for 3 seconds
power off, the key input is
possible once again.
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A
B
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Remarks
D
E
F
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