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Denon AVR-1908 Service Manual

Denon AVR-1908
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24
AVR-1908 / AVR-788
Unless specified, VIDEO UNIT part.
E
Input
S
Check ± 5V.
+5V : CP706 / 2pin
-5V : CP706 / 3pin
NG
To troubleshooting 1.1 Power not turn
on.
OK
Check input/output of video SW.
Input Y : IC2011 / 12pin
Input C : IC2012 / 12pin
Output Y : IC2011 / 1pin
Output C : IC2012 / 1pin
NG
Check video SW settings.
IC2011 - 15pin: H
IC2011 - 11pin: L
IC2012 - 15pin: H
IC2012 - 11pin: L
NG
Check soldering of IC2003.
OK
OK
Check soldering of
IC2011
and IC
2012
.
Check input/output of MPX.
Input Y : IC2007 / 5pin
Input C : IC2008 / 12pin
Output Y : IC2007 / 4pin
Output C : IC2008 / 14pin
NG
Check MPX settings.
IC2007 - 9pin: L
IC2007 - 10pin: L
IC2008 - 9pin: L
IC2008 - 10pin: L
IC2008 - 11pin: L
NG
Check soldering of IC2001 and IC2003.
OK
OK
Check soldering of
IC2007
and
IC
2008
.
Check input/output of AMP.
Input Y : IC2009 / 5pin
Input C : IC2009 / 3pin
Output Y : IC2009 / 7pin
Output C : IC2009 / 1pin
NG
Check soldering of IC2009.
OK
Check input/output of MPX.
Input Y : IC2014 / 2pin
Input C : IC2014 / 15pin
Output Y : IC2014 / 3pin
Output C : IC2014 / 13pin
NG
Check MPX settings.
IC2014 - 9pin: H
IC2014 - 10pin: L
NG
Check soldering of IC2004.
OK
OK
Check soldering of
IC2014
.
Check input/output of AMP.
Input Y : IC2013 / 3pin
Input C : IC2013 / 5pin
Output Y : IC2013 / 1pin
Output C : IC2013 / 7pin
NG
Check soldering of IC2013.
OK
Check a cable between the main unit -
monitor or the monitor.
特に記載がない場合は VIDEO基板の部品です。
E
入力(S)
±5Vの
+5V:CP706/2pin
-5V:CP706/3pin
NG
1.1 電源が入らないのトラブルシューティングへ
OK
ビデオSW の入出力確認
入力 Y:IC2011/12pin
入力 C:IC2012/12pin
出力 Y:IC2011/1pin
出力 C:IC2012/1pin
NG
ビデオSW の設定確認
IC2011-15pin:H
IC2011-11pin:L
IC2012-15pin:H
IC2012-11pin:L
NG
IC2003 のハンダ付け確認
OK
OK
IC2011,2012
ハンダ付け確認
MPX の入出力確認
入力 Y:IC2007/5pin
入力 C:IC2008/12pin
出力 Y:IC2007/4pin
出力 C:IC2008/14pin
NG
MPX の設定確認
IC2007-9pin:L
IC2007-10pin:L
IC2008-9pin:L
IC2008-10pin:L
IC2008-11pin:L
NG
IC2001,2003
ハンダ付け確認
OK
OK
IC2007,2008
ハンダ付け確認
AMP の入出力確認
入力 Y:IC2009/5pin
入力 C:IC2009/3pin
出力 Y:IC2009/7pin
出力 C:IC2009/1pin
NG
IC2009 のハンダ付け確認
OK
MPX の入出力確認
入力 Y:IC2014/2pin
入力 C:IC2014/15pin
出力 Y:IC2014/3pin
出力 C:IC2014/13pin
NG
MPX の設定確認
IC2014-9pin:H
IC2014-10pin:L
NG
IC2004 のハンダ付け確認
OK
OK
IC2014 のハンダ付け確
AMP の入出力確認
入力 Y:IC2013/3pin
入力 C:IC2013/5pin
出力 Y:IC2013/1pin
出力 C:IC2013/7pin
NG
IC2013 のハンダ付け確
OK
本体 - モニター間のケーブル
もしくは、モニターの確認

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Denon AVR-1908 Specifications

General IconGeneral
Channels7.1
Power Output90W per channel (8 ohms, 20Hz-20kHz, 0.08% THD)
HDMI Inputs2
HDMI Outputs1
Dolby DigitalYes
DTSYes
TypeAV Receiver
Component Video Inputs3
Component Video Outputs1
Digital Audio Inputs2 Optical, 2 Coaxial
TunerAM/FM
Frequency Response10Hz-100kHz (+1, -3dB)
Input Sensitivity/Impedance200mV/47k ohms
Signal-to-Noise Ratio98 dB
Power Consumption460W
Surround Sound FormatsDolby Digital, DTS
Total Harmonic Distortion0.08%
Tuner Frequency RangeAM: 522-1611 kHz, FM: 87.5-108.0 MHz
Standby Power ConsumptionLess than 1W

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