Pioneer VSX-1020-K, Service Manual

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5.2 ERROR INDICATIONS
Item
[Error Indications]
[Purpose]
Error Indications When an Abnormality in The Amplifier System is Detected
[How to Enter Release Mode]
FL Display
LED
Flashes
NG
Count.
Detection
Method
Process After Detection Description / Remarks
“AMP DC”
(“DC output from
SP term”)
detection
Flashing
"AMP ERR"
for 3 seconds
MCACC
LED
DC
XDCERR
(Pin 80 of IC3004)
Detect "L"
1) Muting on, speaker relay off.
2) "AMP ERR" flashing
3) Shutdown after 3 seconds.
4) "MCACC" LED flashing
5) Power on is not acceptable.
To detect high DC output from amplifier damage
(defect status).
A process to protect speakers (for protection of
connected external devices).
For checking, refer to "How to enter release
mode" below.
If the DC detection port become “H” for
3 seconds, the unit will returns to normal
condition automatically.
“AMP overload”
detection.
N /A
iPod
LED
OL
XOLERR
(Pin 71 of IC3004)
Detect "L"
1) Muting on, speaker relay off.
2) Shutdown immediately.
3) "iPod" LED flashing
4) Power on is acceptable.
To detect overloading (abnormal status) with
low-load driving or a short circuit of the speaker
terminals (for protection of the amplifier).
“Over Heat”
detection.
Flashing
"AMP
O
V ERHEAT"
for 3 seconds
Center
Blue
LED
STMP
TEMPERR5
(Pin 72 of IC3004)
Detect "H"
1) Muting on, speaker relay off,
2) "O
V ERHEAT" flashing
3) Shutdown after 3 seconds.
4) "Center Blue" LED flashing
5) Power on is acceptable after
1 minute.
To detect overheat of inner tempareture.
"Abnormality DC
voltage of the
Digital power
supply" detection
N /A PQLS DERR
X V DDERR
(Pin 70 of IC3004)
Detect "L"
1) Muting on, speaker relay off.
2) Shutdown immediately.
3) "PQLS" LED flashing
4) Power on is acceptable.
To detect the abnormality voltage of Digital
power supply circuit for the D-MAI
N Assy.
"USB Overload"
detection
“Over Current"
N o Flashing
N /A N /A
USB ERR
(Pin M3 of IC800)
Detect "H"
1) Bass Power off
2) Display "Over Current"
3) Power on is acceptable
To detect the connected USB device is
overload. (over 500 mA)
“BT Adapter
overload”
detection.
"ADP
O
V ERLOAD"
N o Flashing
N /A N /A
BTOL
(Pin N 3 of IC800)
Detect "H"
1) Adapter port power off
2) Display "ADP O
V ERLOAD"
To detect the connected Blue Tooth Adapter
device is overload. (over 100 mA)
"HDCP of HDMI
Error"
detection
Flashes
“HDCP
ERROR”
for 5 seconds
N /A N /A
Read Register
value
1) Display "HDCP ERROR"
The monitor does not support HDCP type or
is in standby mode.
(Warning indication for HDMI Simplay)
"Analog Input
Over"
detection
During Standby mode, simultaneously press and hold the “TU N E
↓
” and “MULTI-ZO N E O N /OFF” keys for 5 seconds.
Errors upon detection of abnormalities in the amp system are indicated.
“O V ER”
Icon lights
1 second
N /A N /A
DSP firmware
Detect
While the Icon lights 1 second,
when there is no A
N ALOG I N PUT
O V ER detection, the Icon stops
lighting and returns to normal
display.
To detect the over-input of the analog audio to
the A/D converter.
When the Icon lights frequently, output level of
the source equipment is high and a sound is
distorted. Turn on the Analog Att switch.