Denon AVR-988 Service Manual

17
AVR-2808CI / AVR-988
※ Unless specified, 1U-3839-1 A.VIDEO UNIT part.
E
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
Check input/output of analog SW.
Input : IC110-13pin
Output : IC110-3pin
NG
Check analog SW settings.
IC110-9,10,11pin : L(0V)
IC110-6pin : L(0V)
NG
Check IC301, IC304 and CX073 solder-
ing, or DIGITAL UNIT flaw.
OK
OK
Check soldering of IC110.
Check input/output of AMP.
Input : IC115-3pin
Output : IC115-1pin
NG
Check soldering of IC115C.
OK
Check input/output of analog SW.
Input : IC105-3pin
Output : IC105-4pin
NG
Check analog SW settings.
IC105-10pin : L(0V)
IC105-9pin : H(+5V)
NG
Check IC304 and CX073 soldering, or
DIGITAL UNIT flaw.
OK
OK
Check soldering of IC105.
Check input/output of AMP.
Input : IC112-3pin
Output : IC112-1pin
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。
E
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
ｱﾅﾛｸﾞ SW の入出力確認
入力:IC110-13pin
出力:IC110-3pin
NG
ｱﾅﾛｸﾞ SW の設定確認
IC110-9,10,11pin:Ｌ(0V)
IC110-6pin: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
IC110 のﾊﾝﾀﾞ付け確認
AMP の入出力確認
入力:IC115-3pin
出力:IC115-1pin
NG
IC115 のﾊﾝﾀﾞ付け確認
OK
ｱﾅﾛｸﾞ SW の入出力確認
入力:IC105-4pin
出力:IC105-3pin
NG
ｱﾅﾛｸﾞ SW の設定確認
IC105-10pin:Ｌ(0V)
IC105-9pin:H(+5V)
NG
IC304,CX073 のﾊﾝﾀﾞ付け確認
もしくは DIGITALUNIT の不具合
OK
OK
IC105 のﾊﾝﾀﾞ付け確認
AMP の入出力確認
入力:IC112-3pin
出力:IC112-1pin
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

Denon AVR-988 Specifications

General

Brand	Denon
Model	AVR-988
Category	Receiver
Language	English