37
DVD-3930/3930CI
5. GU-3751-1 (AUDIO (DIGITAL) UNIT)/GU-3751-2/3 (AUDIO/MIX/5.1 UNIT)
(1) CD,DVD-VIDEO/AUDIO
メカユニットとの接続確認
GU-3751-1(
AUDIO (DIGITAL) UNIT
)
・ [CY331] 出力信号の確認
N.G.
半田付け、FFC ケーブルを確認
・ [CY331]
・ [CX331]: GU-3749
・ FFC ケーブル、挿入状態の確認
O.K.
IC103 の入力信号の確認
GU-37
5
1-1(AUDIO (DIGITAL) UNIT)
・ [IC103](EP2C8Q208C8N)
23(MCK), 87(BCK), 86(LRCK),
84(PDATA0: FL/FR), 82(PDATA1: SL/SR),
81(PSATA2: C/SW),
80(PDATA3: MIXL/MIXR: without SACD) pin check
N.G.
半田付けを確認
・ IC103
O.K.
IC103 の出力信号の確認
GU-37
5
1-1(AUDIO (DIGITAL) UNIT)
・ [IC103](EP2C8Q208C8N)
151(Rfs), 152(R64fs), 149(Tfs1), 150(T64fs1),
146(Tfs2), 147(T64fs2), 181(FL/FR), 175(SL/SR),
179(C/SW), 173(MIXL/MIXR: without SACD)
N.G.
半田付けを確認
・ IC103
・ 3.3V
O.K.
DSP 動作の確認
ファームチェックモードで DSP のバージョンを確認
・ "0000" 表示は N.G.
(page 18 参照)
N.G.
半田付けを確認
GU-3651-1(AUDIO (DIGITAL) UNIT)
・ [IC303]: (DSP RESET)14pin
・ [IC303], [IC305] の接続確認
・ [IC103], [IC303] の接続確認
・ [IC305]: (FLASH ROM for DSP) の確認
O.K.
データ確認 -1
GU-3751-1(AUDIO (DIGITAL) UNIT)
・ [IC103](EP2C8Q208C8N)
・ [IC303](DSP): input
N.G.
半田付けを確認
・ R187, 188, 190, 192, 310, 312, 314, 315 の確認
O.K.
データ確認 -2
GU-3751-1(AUDIO (DIGITAL) UNIT)
・ [IC303](DSP): output
121(FL/FR), 126(C/SW), 130(SL/SR), 135(MIXL/MIXR)
pin の確認
各出力信号が "H" になっていないか
O.K.
データ確認 -3
GU-3751-1(AUDIO (DIGITAL) UNIT)
・ [IC303](DSP): output
・ [IC103](EP2C8Q208C8N): input
N.G.
半田付けを確認
・ R316, 318, 320, 322 の確認
O.K.
N.G.
5. GU-3751-1 (AUDIO (DIGITAL) UNIT)/GU-3751-2/3 (AUDIO/MIX/5.1 UNIT)
(1) CD, DVD-VIDEO/AUDIO, (SACD-SOURCE DIRECT OFF)
Check connection Mecha UNIT
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [CY331] output signal
N.G.
Check Soldering, FFC cable
• [CY331]
• [CX331]: GU-3749
• FFC cable, insert condition
O.K.
Check input signal: IC103
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC103](EP2C8Q208C8N)
23(MCK), 87(BCK), 86(LRCK),
84(PDATA0: FL/FR), 82(PDATA1: SL/SR),
81(PSATA2: C/SW),
80(PDATA3: MIXL/MIXR: without SACD) pin check
N.G.
Check Soldering.
• IC103
O.K.
Check output signal: IC103
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC103](EP2C8Q208C8N)
151(Rfs), 152(R64fs), 149(Tfs1), 150(T64fs1),
146(Tfs2), 147(T64fs2), 181(FL/FR), 175(SL/SR),
179(C/SW), 173(MIXL/MIXR: without SACD)
N.G.
Check Soldering.
• IC103
• 3.3V
O.K.
Check DSP operation
Check Firm version on DSP
• “0000” indicate is N.G.
(refer page 18.)
N.G.
Check Soldering.
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC303]: (DSP RESET)14pin
• [IC303] to [IC305] Signal
• [IC103] to [IC303] Signal
• [IC305]: (FLASH ROM for DSP)
O.K.
Check DATA Signal -1
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC103](EP2C8Q208C8N)
• [IC303](DSP): input
N.G.
Check Soldering.
• R187, 188, 190, 192, 310, 312, 314, 315
O.K.
Check DATA Signal -2
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC303](DSP): output
121(FL/FR), 126(C/SW), 130(SL/SR),
135(MIXL/MIXR) pin
Each output pin Level "H": NG
O.K.
Check DATA Signal -3
GU-3751-1(AUDIO (DIGITAL) UNIT)
• [IC303](DSP): output
• [IC103](EP2C8Q208C8N): input
N.G.
Check Soldering.
• R316, 318, 320, 322
O.K.
N.G.
Summary of Contents for DVD-3930
Page 43: ...43 DVD 3930 3930CI BLOCK DIAGRAM...
Page 51: ...51 DVD 3930 3930CI BD7956FS MA IC151 BD7956FS Block diagram 1 27 54 28...
Page 57: ...57 DVD 3930 3930CI CXD2753R MA IC401 Pin Assignment Block Diagram...
Page 67: ...67 DVD 3930 3930CI ADV7324 MA IC501 550...
Page 72: ...72 DVD 3930 3930CI PRINTED WIRING BOARDS GU 3749 MAIN A VIDEO P W B UNIT COMPONENT SIDE...
Page 73: ...73 DVD 3930 3930CI FOIL SIDE...
Page 74: ...74 DVD 3930 3930CI GU 3750 POWER DISPLAY P W B UNIT COMPONENT SIDE...
Page 75: ...75 DVD 3930 3930CI FOIL SIDE...
Page 76: ...76 DVD 3930 3930CI GU 3751 AUDIO P W B UNIT COMPONENT SIDE...
Page 77: ...77 DVD 3930 3930CI FOIL SIDE...
Page 78: ...78 DVD 3930 3930CI GU 3752 DIGITAL VIDEO P W B UNIT COMPONENT SIDE...
Page 79: ...79 DVD 3930 3930CI GU 3793 FAN POWER P W B UNIT FOIL SIDE COMPONENT SIDE FOIL SIDE...
Page 151: ...151 DVD 3930 3930CI WIRING DIAGRAM...
Page 154: ...154 DVD 3930 3930CI GU 3749 2 VIDEO P W B V6 V7 V8 V1 V2 V3 V4 V5...