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Denon AVR-789 Service Manual

Denon AVR-789
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27
AVR-1909/789, AVC-1909
Unless specified, VIDEO UNIT part.
C
Input
CVBS/S
Check power supply voltage
+5V : CN2005-8pin
-5V : CN2005-7pin
MC_+5V : CN2001-5pin
NG
To troubleshooting 1.1 Power not turn
on.
OK
Check output of AMP
Output V : IC2016-33pin
Output Y : IC2016-31pin
Output C : IC2016-29pin
NG
Check VCRINH
INH : CP2002-10pin : H(+5V)
NG
Check soldering of VIDEO CNT UNIT
connector base, and check poor contacts.
OK
Check cable between main unit
and monitor or Check monitor.
Check input of input selector and
surrounding circuitry soldering.
Input : IC2009,IC2010,IC2011
特に記載がない場合は VIDEO基板の部品です。
C
入力
CVBS/S
電源電圧の確認
+5V:CN2005-8pin
-5V:CN2005-7pin
MC+5V:CN2001-5pin
NG
1.1 電源が入らないのトラブルシューティングへ
OK
出力段 AMP の出力確認
出力 V:IC2016-33pin
出力 Y:IC2016-31pin
出力 C:IC2016-29pin
NG
VCRINH の確認
INH:CP2002-10pin:H(+5V)
NG
VIDEOCNT基板のコネクタベースハンダ付け、及
び基板接触不良確認
OK OK
本体 -MONITOR間のケーブル
もしくはMONITOR 確認
入力セレクタ及びその周辺回路の
ハンダ付け確認
入力セレクタ :IC2009,IC2010,IC2011
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

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Denon AVR-789 Specifications

General IconGeneral
BrandDenon
ModelAVR-789
CategoryReceiver
LanguageEnglish

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