Denon AVR-2308CI Service Manual page 32

P
Input
CVBS
1U-3853-1 A.VIDEO UNIT
Check ± 5VA. NG To troubleshooting 1.1 Power not turn
+5VA : CX077-3,4pin on.
-5VA : CX077-5pin
OK
Check input/output of analog SW.
NG
Input : IC109-13pin
Output : IC109-3pin
OK
Check input/output of AMP.
Check soldering of IC115 and
NG
Input : IC115-5pin
surrounding parts.
Output : IC115-7pin
OK
Check output to 1U-3852 DIGITAL UNIT.
NG
Output V : CX113-5pin
OK
To troubleshooting 3.HDMI/DVI.
※ Unless specified, 1U-3853-1 A.VIDEO UNIT part.
Check analog SW settings.
Check IC301 and CX073
NG
IC109-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
IC109-6pin : L(0V)
OK
Check soldering of IC109.
Check soldering of CX113.
P
入力
CVBS
1U-3853-1 A.VIDEO UNIT
± 5VA の確認
+5VA : CX077-3,4pin
-5VA : CX077-5pin
OK
ｱﾅﾛｸﾞ SW の入出力確認
入力 : IC109-13pin
出力 : IC109-3pin
OK
AMP の 入出力確認
入力 : IC115-5pin
出力 : IC115-7pin
OK
1U-3852 DIGITAL UNIT への出力確認
出力 V : CX113-5pin
OK
3.HDMI/DVI のﾄﾗﾌﾞﾙｼｭｰﾃｨﾝｸﾞへ
※ 特に記載がない場合は 1U-3853-1 A.VIDEO UNIT の部品です。
32
AVR-2308CI / AVR-888 / AVR-2308 / AVC-2308
NG
1.1 電源が入らないのﾄﾗﾌﾞﾙｼｭｰﾃｨﾝｸﾞへ
ｱﾅﾛｸﾞ SW の設定確認
NG NG
IC301,CX073 のﾊﾝﾀﾞ付け確認
IC109-9,10,11pin : Ｌ(0V)
もしくは DIGITAL UNIT の不具合
IC109-6pin : Ｌ(0V)
OK
IC109 のﾊﾝﾀﾞ付け確認
NG
I C 115 及び周辺部品の
ﾊﾝﾀﾞ付け確認
NG
CX113 のﾊﾝﾀﾞ付け確認