Denon DVD-A11 - Page 22

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DVD-5900/DVD-A11
(2) Check the Set-up process of B/E µ-COM.
Check Reset signal.
• [IC108]:(RESET) 24 pin.
“H” level O.K.?
Check Power Supply Voltages.
• [IC108]:
+3.3V_ESS, +2.0V_ESS O.K.?
Check Clock waveform.
• [IC108]:49,105,116pin and
117pin.
27MHz (3.3V), O.K.?
Check I
2
C Signal.
• [IC108]:
“H” level at 160pin and 161pin.
Check Address,Data Bus between
[IC108] and [IC107](Flash Rom).
Continue to next step.
Check the Set-up process of F/E µ-COM.
Check the output level.
[ON/ST]:”H” level?
Check soldering.
• [IC402(M30620F)]:
88pin.
Check 27MHz(3.3V) at
10pin of IC106.
(1)Check soldering of X101.
(2)Check soldering of IC105
(SM8701).
O.K.
N.G.
N.G.
Check soldering of
R114,R115 and R154.
O.K.
N.G.
N.G.
O.K.
Check soldering
• [IC402(M30620F)]: 81pin.
• [IC117]: 5pin and 6pin.
• FB127 and R138.
Check soldering
• [IC108] and [IC116]
• [R185,R186,R757,FB173] and
[FB174].
Check soldering at Address, Data Bus, Con-
trol signal.
• [LD0--LD7], [LA0--LA17], [LCS3
, LOE]
O.K.
O.K.
N.G.
N.G.
O.K.
N.G.
(2) B/Eμ-COM 立ち上げチェック工程
[IC108] の Reset 信号の確認
(RESET)の 24pin.
Hlevel
IC108 の D1 の電圧確認
+3.3VESS,+2.0VESS
[IC108] の 49,105,116,117pin
のクロック波形確認
27MHz(3.3V),
IC108 の I
2
C 信号の確認
Hlevel(160,161pin)
IC108とIC107(FlashRom) 間の
アドレス、データバス確認
次のステップ
(3)F/Eμ-COM の立ち上げチェック工程へ .
出力レベル確認
[ON/ST]Hレベル
半田付けを確認
･[M30620F](IC402) の
88pin.
IC106 の 10pinの確認
27MHz(3.3V)
(1) [X101] を確認
(2) [SM8701](IC105) の
半田付けを確認
O.K.
N.G.
N.G.
半田付けを確認
･R114、R115、R154
O.K.
N.G.
N.G.
O.K.
半田付けを確認
･[M30620F](IC402) の 81pin
･[IC117]の 5pinと6pin
･FB127、R138.
半田付けを確認
･[IC108]と[IC116]
･R185、R186、R757、FB173、
FB174.
アドレス、データバス、制御信号の半田付
けを確認
[LD0 〜 LD7]、[LA0 〜 LA17]、[LCS3、LOE]
O.K.
O.K.
N.G.
N.G.
O.K.
N.G.
w w w . x i a o y u 1 6 3 . c o m
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T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
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