28
DVD-3910
(4) SACD check process
(4) SACD
チェック工程
Check Power Supply Voltages.
Check Soldering.
電源電圧確認
半田付けを確認
GU-3618(MAIN UNIT)
N.G
・
[IC950]
GU-3618(MAIN UNIT)
N.G
・
[IC950]
・
[IC401],[IC403],[IC405]:
・
FB952,FB956
・
[IC401],[IC403],[IC405]:
・
FB952,FB956
+5V_A2,+3.3V_D2,+2.5V_D2 O.K.?
+5V_A2,+3.3V_D2,+2.5V_D2 O.K.?
O.K.
O.K.
Check Clock waveform.
クロックの波形確認
GU-3618(MAIN UNIT)
N.G
Check Soldering.
GU-3618(MAIN UNIT)
N.G
半田付けを確認
・
[IC401](EPM3128ATC):87pin.
・
[IC401]:87pin,R498,[IC404],R440
・
[IC401](EPM3128ATC):87pin.
・
[IC401]:87pin,R498,[IC404],R440
・
[IC405](CXD2753R):11pin.
・
[IC405]:11pin,R439,[IC404]
・
[IC405](CXD2753R):11pin.
・
[IC405]:11pin,R439,[IC404]
33.87MHz(3.3V),O.K.?
33.87MHz(3.3V),O.K.?
O.K.
O.K.
Check Reset signal.
RESET
信号の確認
GU-3618(MAIN UNIT)
N.G
Check Soldering.
GU-3618(MAIN UNIT)
N.G
半田付けを確認
・
[IC401]:(XRST_PLD)89 pin.
・
[IC508],R413
・
[IC401]:(XRST_PLD)89 pin.
・
[IC508],R413
・
[IC405]:(RST)9 pin.
・
R463
・
[IC405]:(RST)9 pin.
・
R463
"H"level O.K.?
"H"level O.K.?
O.K.
O.K.
Check Bus Line.
Check Soldering.
バスラインの確認
半田付けを確認
GU-3618(MAIN UNIT)
N.G
・
Address,Data Bus,Control Signal.
GU-3618(MAIN UNIT)
N.G
・
Address,Data Bus,Control Signal.
・
[IC405]
⇔
[IC402](16MSDRAM)
[DQ0-7],[D_MA0-11],[DCLK],[DCKE],[DWE],
・
[IC405]
⇔
[IC402](16MSDRAM)
[DQ0-7],[D_MA0-11],[DCLK],[DCKE],[DWE],
"L"
⇔
"H" alternate?
[DCAS],[DRAS]
"L"
⇔
"H" alternate?
[DCAS],[DRAS]
・
RA401-RA405,R445-R449
・
RA401-RA405,R445-R449
O.K.
O.K.
Check VSTEM communication.
Check Soldering.
VSTEM
通信の確認
半田付けを確認
GU-3618(MAIN UNIT)
N.G
・
[IC401]:35-37,44-48,54,63,67-69pin
GU-3618(MAIN UNIT)
N.G
・
[IC401]:35-37,44-48,54,63,67-69pin
・
[SD0-7],[XSAC],[XSHD2],[SDCK],[SDEF],
・
[IC405]:164-176pin
・
[SD0-7],[XSAC],[XSHD2],[SDCK],[SDEF],
・
[IC405]:164-176pin
[XSRQ]
[XSRQ]
"L"
⇔
"H" alternate?
"L"
⇔
"H" alternate?
O.K.
O.K.
Check RF signal for Water Mark.
ウォーターマーク用RF信号の確認
GU-3618(MAIN UNIT)
N.G
Check the circumference soldering of [IC403]
GU-3618(MAIN UNIT)
N.G
[IC403](AD8062)
周辺と
[IC405]:126pin
の半田付け
・
TP[WM]:about 1.0Vp-p
(AD8062) and [IC405]:126pin
・
TP[WM]:
約
t 1.0Vp-p
を確認
O.K.
終了
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299