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Denon AVR-1908 Service Manual

Denon AVR-1908
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31
AVR-1908 / AVR-788
Unless specified, VIDEO UNIT part.
J
Input
CVBS
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 : IC2003 / 12pin
Output : IC2003 / 1pin
NG
Check video SW settings.
IC2003 - 15pin: H
IC2003 - 11pin: L
NG
Check soldering of IC2004.
OK
OK
Check soldering of IC2003.
Check input/output of MPX.
Input : IC2007 / 1pin
Output : IC2007 / 15pin
NG
Check MPX settings.
IC2007 - 9pin: H
IC2007 - 10pin: L
NG
Check soldering of IC2004.
OK
OK
Check soldering of
IC2007
.
Check input/output of AMP.
Input : IC2010 / 5pin
Output : IC2010 / 7pin
NG
Check soldering of IC2010.
OK
Check input of HDMI B’d.
Output : CP1006 / 5pin
OK
To troubleshooting 3.HDMI/DVI.
特に記載がない場合は VIDEO 基板の部品です。
J
入力(CVBS)
±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 :IC2003/12pin
出力 :IC2003/1pin
NG
ビデオSW の設定確認
IC2003-15pin:H
IC2003-11pin:L
NG
IC2004 のハンダ付け確認
OK
OK
IC2003 のハンダ付け確認
MPX の入出力確認
入力 :IC2007/1pin
出力 :IC2007/15pin
NG
MPX の設定確認
IC2007-9pin:H
IC2007-10pin:L
NG
IC2004 のハンダ付け確認
OK
OK
IC2007 のハンダ付け確認
AMP の入出力確認
入力 :IC2010/5pin
出力 :IC2010/7pin
NG
IC2010 のハンダ付け確
OK
HDMIB'd への出力確認
出力 :CP1006/5pin
OK
3.HDMI/DVI
トラブルシューティングへ

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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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