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Denon AVR-1908 Service Manual

Denon AVR-1908
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33
AVR-1908 / AVR-788
Unless specified, VIDEO UNIT part.
L
Input
COMPONENT
Check ± 5V and +9V.
+5V : CP706 / 2pin
-5V : CP706 / 3pin
+9V : CP706 / 1pin
NG
To troubleshooting 1.1 Power not turn
on.
OK
Check input/output of V-SEL.
Input Y : IC2014 / 42pin
Input Cb : IC2014 / 44pin
Input Cr : IC2014 / 46pin
Output Y : IC2014 / 34pin
Output Cb : IC2014 / 32pin
Output Cr : IC2014 / 30pin
NG
Check soldering of IC2014.
OK
Check input/output of AMP.
Input Y : IC2016 / 1pin
Input Cb : IC2016 / 3pin
Input Cr : IC2016 / 5pin
Output Y : IC2016 / 13pin
Output Cb : IC2016 / 11pin
Output Cr : IC2016 / 9pin
NG
Check soldering of IC2016.
OK
Check output of HDMI B’d.
Output Y : CP1006 / 11pin
Output Cb : CP1006 / 9pin
Output Cr : CP1006 / 7pin
OK
To troubleshooting 3.HDMI/DVI.
特に記載がない場合は VIDEO 基板の部品です。
L
入力(COMPONENT)
± 5V,+9V の確認
+5V:CP706/2pin
-5V:CP706/3pin
+9V:CP706/1pin
NG
1.1 電源が入らないのトラブルシューティングへ
OK
V-SEL の入出力確認
入力 Y:IC2014/42pin
入力 Cb:IC2014/44pin
入力 Cr:IC2014/46pin
出力 Y:IC2014/34pin
出力 Cb:IC2014/32pin
出力 Cr:IC2014/30pin
NG
IC2014 のハンダ付け確
OK
AMP の入出力確認
入力 Y:IC2016/1pin
入力 Cb:IC2016/3pin
入力 Cr:IC2016/5pin
出力 Y:IC2016/13pin
出力 Cb:IC2016/11pin
出力 Cr:IC2016/9pin
NG
IC2016 のハンダ付け確
OK
HDMIB'd への出力確認
出力 Y:CP1006/11pin
出力 Cb:CP1006/9pin
出力 Cr:CP1006/7pin
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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