20
DVD-2910/955
(4) SACD check process
Check Power Supply Voltages.
GU-3612 (MAIN UNIT)
• [IC601], [IC602], [IC606] :
+5V_A2, +3.3V_D2, +2.5V_D2 O.K.?
N.G.
Check Soldering.
• [IC604] (BA25BCOFP-E2)
• FB704, FB705
O.K.
Check Oscillation waveform.
GU-3612 (MAIN UNIT)
• [IC601] (EPM3128ATC) : 87pin.
• [IC602] (CXD2753R) : 11pin
33.87MHz (3.3V), O.K.?
N.G.
Check Soldering.
• [IC601] : 87pin, R626, [IC607], R692
• [IC602] : 11pin, R691
O.K.
Check Reset signal.
GU-3612 (MAIN UNIT)
• [IC601] : (XRST_PLD) 89 pin.
• [IC602] : (RST) 9 pin.
"H" level O.K.?
N.G.
Check Soldering.
• [IC806] (TC7S08S), R627
• R664
O.K.
Check Bus Line.
GU-3612 (MAIN UNIT)
• [IC602]
⇔
[IC603] (16MSDRAM)
"L"
⇔
"H" alternate?
N.G.
Check Soldering.
• Address, Data Bus, Control Signal.
[DQ0-7], [D_MA0-11], [DCLK], [DCKE],
[DWE], [DCAS], [DRAS]
• RA601-RA605, R651-R655
O.K.
Check VSTEM communication.
GU-3612 (MAIN UNIT)
• [SD0-7], [XSAC], [XSHD2], [SDCK], [SDEF],
[XSRQ]
"L"
⇔
"H" alternate?
N.G.
Check Soldering.
• [IC601] : 35-37, 44-48, 54, 63, 67-69pin
• [IC602] : 164-176pin
O.K.
Check RF signal for Water Mark.
GU-3612 (MAIN UNIT)
• TP [WM] : about 1.0Vp-p
Check the circumference soldering of
[IC606]
(AD8062) and [IC602] : 126pin
O.K.
END
(4) SACD チェック工程
電源電圧確認
GU-3612 (MAIN UNIT)
・ [IC601], [IC602], [IC606] :
+5V̲A2, +3.3V̲D2, +2.5V̲D2 O.K.?
N.G.
半田付けを確認
・ [IC604] (BA25BCOFP-E2)
・ FB704, FB705
O.K.
クロックの波形確認
GU-3612 (MAIN UNIT)
・ [IC601] (EPM3128ATC) : 87pin.
・ [IC602] (CXD2753R) : 11pin.
33.87MHz (3.3V), O.K.?
N.G.
半田付けを確認
・ [IC601] : 87pin, R626, [IC607], R692
・ [IC602] : 11pin, R691
O.K.
RESET 信号の確認
GU-3612 (MAIN UNIT)
・ [IC601] : (XRST̲PLD) 89 pin.
・ [IC602] : (RST) 9 pin.
"H" level O.K.?
N.G.
半田付けを確認
・ [IC806] (TC7S08S), R627
・ R664
O.K.
バスラインの確認
GU-3612 (MAIN UNIT)
・ [IC602] ⇔ [IC603] (16MSDRAM)
"L" ⇔ "H" alternate?
N.G.
半田付けを確認
・ Address, Data Bus, Control Signal.
[DQ0-7], [D̲MA0-11], [DCLK], [DCKE], [DWE],
[DCAS], [DRAS]
・ RA601-RA605, R651-R655
O.K.
VSTEM 通信の確認
GU-3612 (MAIN UNIT)
・ [SD0-7], [XSAC], [XSHD2], [SDCK], [SDEF],
[XSRQ]
"L" ⇔ "H" alternate?
N.G.
半田付けを確認
・ [IC601] : 35-37, 44-48, 54, 63, 67-69pin
・ [IC602] : 164-176pin
O.K.
ウォーターマーク用 RF 信号の確認
GU-3612 (MAIN UNIT)
・ TP[WM] : 約 t 1.0Vp-p
[IC606] (AD8062) 周辺と [IC602] : 126pin の
半田付けを確認
O.K.
終了
Summary of Contents for DVD-2910
Page 29: ...29 DVD 2910 955 BLOCK DIAGRAM ...
Page 48: ...48 DVD 2910 955 CXD2753R IC602 Pin Assignment Block Diagram ...
Page 79: ...79 DVD 2910 955 TA76432FC IC902 PC123 IC909 COLLECTOR EMITTER ANODE CATHODE TOP VIEW ...
Page 81: ...81 DVD 2910 955 PRINTED WIRING BORDS GU 3612 MAIN PWB P W B UNIT ASS Y COMPONENT SIDE ...
Page 82: ...82 DVD 2910 955 GU 3612 MAIN PWB P W B UNIT ASS Y FOIL SIDE ...
Page 83: ...83 DVD 2910 955 GU 3615 VODEO P W B UNIT ASS Y COMPONENT SIDE ...
Page 84: ...84 DVD 2910 955 GU 3615 VODEO P W B UNIT ASS Y FOIL SIDE ...
Page 85: ...85 DVD 2910 955 GU 3616 AUDIO POWER P W B UNIT ASS Y COMPONENT SIDE ...
Page 86: ...86 DVD 2910 955 GU 3616 AUDIO POWER P W B UNIT ASS Y FOIL SIDE ...
Page 117: ...DVD 2910 955 117 GU 3615 1 VIDEO P W B V6 V7 V8 V1 V2 V3 V4 V5 ...