Denon AVR-2808 - Page 21

21
AVR-2808
※ Unless specified, 1U-3839-1 A.VIDEO UNIT part.
A
Input
CVBS
1U-3839-1 A.VIDEO UNIT
Check ± 5VA.
+5VA : CX078-3,4pin
-5VA : CX078-5pin
NG
To troubleshooting 1.1 Power not turn
on.
OK
1U-3839-1 A.VIDEO UNIT
Check input/output of analog SW.
Input : IC109-13pin
Output : IC109-3pin
NG
Check analog SW settings.
IC109-9,10,11pin : L(0V)
IC109-6pi : L(0V)
NG
Check IC301, IC304 and CX073
soldering, or DIGITAL UNIT flaw.
OK
OK
Check soldering of IC109.
Check input/output of AMP.
Input : IC115-5pin
Output : IC115-7pin
NG
Check soldering of IC115 and
surrounding parts.
OK
Check input/output of AMP.
Input : IC309-3pin
Output : IC309-1pin
NG
Check soldering of IC309 and
surrounding parts.
OK
Check output to 1U-3838 DIGITAL UNIT.
Output V : CX123-5pin
NG
Check soldering of CX123.
OK
Check input of video driver.
Input Y : IC305-2pin
Input C : IC305-4pin
NG
Check CX123 soldering, or
DIGITAL UNIT flaw.
OK
Check output of video driver.
Output V : IC305-36pin
NG
Check soldering of IC305.
OK
Check input/output of analog SW.
Input : IC108-14pin
Output : IC108-13pin
NG
Check analog SW settings.
IC108-10pin : H(+5V)
IC108-9pin : L(0V)
NG
Check IC301 and CX073 soldering, or
DIGITAL UNIT flaw.
OK
OK
Check soldering of IC108.
Check input/output of AMP.
Input : IC112-5pin
Output : IC112-7pin
NG
Check soldering of IC112.
OK
Check cable between main unit and
monitor or Check monitor.
※ 特に記載がない場合は 1U-3839-1A.VIDEOUNITの部品です。
A
入力
CVBS
1U-3839-1A.VIDEOUNIT
± 5VAの確認
+5VA:CX078-3,4pin
-5VA:CX078-5pin
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
OK
1U-3839-1A.VIDEOUNIT
ｱﾅﾛｸﾞ SW の入出力確認
入力 :IC109-13pin
出力:IC109-3pin
NG
ｱﾅﾛｸﾞ SW の設定確認
IC109-9,10,11pin:Ｌ(0V)
IC109-6pi:Ｌ(0V)
NG
IC301,IC304,CX073 のﾊﾝﾀﾞ付け確認
もしくは DIGITALUNIT の不具合
OK
OK
IC109 のﾊﾝﾀﾞ付け確認
AMP の入出力確認
入力:IC115-5pin
出力:IC115-7pin
NG
IC115 及び周辺部品の
ﾊﾝﾀﾞ付け確認
OK
AMP の入出力確認
入力:IC309-3pin
出力:IC309-1pin
NG
IC309 及び周辺部品の
ﾊﾝﾀﾞ付け確認
OK
1U-3838DIGITALUNITへの出力確認
出力 V:CX123-5pin
NG
CX123 のﾊﾝﾀﾞ付け確認
OK
ﾋﾞﾃﾞｵﾄﾞﾗｲﾊﾞの入力確認
入力 Y:IC305-2pin
入力 C:IC305-4pin
NG
CX123 のﾊﾝﾀﾞ付け確認
もしくは DIGITALUNIT の不具合
OK
ﾋﾞﾃﾞｵﾄﾞﾗｲﾊﾞの出力確認
出力 V:IC305-36pin
NG
IC305 のﾊﾝﾀﾞ付け確認
OK
ｱﾅﾛｸﾞ SW の入出力確認
入力:IC108-14pin
出力:IC108-13pin
NG
ｱﾅﾛｸﾞ SW の設定確認
IC108-10pin:H(+5V)
IC108-9pin:Ｌ(0V)
NG
IC301,CＸ073 のﾊﾝﾀﾞ付け確認
もしくは DIGITALUNIT の不具合
OK
OK
IC108 のﾊﾝﾀﾞ付け確認
AMP の入出力確認
入力:IC112-5pin
出力:IC112-7pin
NG
IC112 のﾊﾝﾀﾞ付け確認
OK
本体 -MONITOR間のｹｰﾌﾞﾙ
もしくはMONITOR の確認