36
DVD-3930/3930CI
4. GU-3749-2 (VIDEO UNIT)/GU-3752(IP UNIT)
(1) プログレッシブ映像 [Y, Pb, Pr] 出力せず
電源電圧確認 [2]
GU-3752(IP UNIT)
・ +3.3V̲D2, +2.5V̲D3, +1.5V̲D1
・ VTT(+1.25V)
・ VREF (+1.25V)
・ MVREF1, MVREF2, MVREF3, MVREF4(1.25V)
N.G.
半田付けを確認
・ [CY064], [CY125]
・ [IC803](LP2995M) 周辺回路
・ R701 〜 704, 707 〜 709, 712, C741 〜 748
・ R148 〜 151, C130, 131, 180, 181
O.K.
映像用デジタル信号の確認 [1]
GU-3752(IP UNIT)
・ I/P Convertor [IC101](SXT2LF-400)input:
[YUV0 〜 7], [PCLK]
N.G.
半田付けを確認
・ [CY122]
・ [R440 〜 448]
O.K.
発振波形確認
GU-3752(IP UNIT)
・ [IC101](SXT2LF-400): [REFCLKA]
Check point: [R152]: 66.666MHz OK?
・ [IC101](SXT2LF-400): [PCICLK]
Check point: [R142]: 33MHz OK?
・ [IC701 〜 704](EM6A9320BI-4MG): [ACK]
Check point: [R717]: 250MHz OK?
N.G.
半田付けを確認
・ [X101](66.666MXTAL) 周辺回路
・ [IC101] 周辺回路
・ [IC701 〜 704] 周辺回路
O.K.
I/P コンバータ [IC101] 制御信号の確認
GU-3752(IP UNIT)
・ [RESETN], [IIC0̲CLK], [IIC0̲DAT]
N.G.
半田付けを確認
・ [CY125]
・ [IC103](TC7W241FU) 周辺回路
O.K.
映像用デジタル信号の確認 [2]
GU-3749-2(VIDEO UNIT)
・ [YO̲0 〜 YO̲9], [CO̲0 〜 CO̲9],
[P̲VSYNC̲1], [P̲HSYNC̲1],
[C̲REF-1], [PS̲CLK-1]
N.G.
半田付けを確認
・ [CY123, CY162]
O.K.
プログレッシブ映像用デジタル信号の確認 [3]
GU-3752(IP UNIT)
・ [IC101]output:
[YO̲0 〜 YO̲9], [CO̲0 〜 CO̲9],
[P̲VSYNC], [P̲HSYNC], [C̲REF-1], [H̲PS̲CLK]
N.G.
半田付けを確認
・ [IC101] 周辺回路
・ [R113 〜 116, 117, 118, 120, 269, 449 〜 456,
459 〜 464, 468, 469]
・ CX162, CX123
O.K.
プログレッシブ映像用デジタル信号の確認 [2]
GU-3749-2(VIDEO UNIT)
・ Video Encoder [IC501](ADV7324)input:
[YO̲0 〜 YO̲9], [CO̲0 〜 CO̲9],
[P̲VSYNC̲1], [P̲HSYNC̲1], [C̲REF-1], [PS̲CLK-1]
N.G.
半田付けを確認
・ [CY123, CY162]
・ [IC501] 周辺回路
O.K.
ビデオバッファー IC 回路の確認
GU-3749-2(VIDEO UNIT)
・ [IC505]
N.G.
[IC505] とその周辺回路の半田付けを確認
O.K.
終了
4. GU-3749-2 (VIDEO UNIT)/GU-3752(IP UNIT)
(1) Progressive output [Y, Pb, Pr] does not outputted.
Check Power Supply Voltages[2].
GU-3752(IP UNIT)
• +3.3V_D2, +2.5V_D3, +1.5V_D1
• VTT(+1.25V)
• VREF (+1.25V)
• MVREF1, MVREF2, MVREF3, MVREF4(1.25V)
N.G.
Check Soldering.
• [CY064], [CY125]
• Circumference of [IC803](LP2995M)
• R701~704, 707~709, 712, C741~748
• R148~151, C130, 131, 180, 181
O.K.
Check Digital signal for Video[1].
GU-3752(IP UNIT)
• I/P Convertor [IC101](SXT2LF-400)input:
[YUV0~7], [PCLK]
N.G.
Check Soldering.
• [CY122]
• [R440~448]
O.K.
Check oscillation waveform.
GU-3752(IP UNIT)
• [IC101](SXT2LF-400): [REFCLKA]
Check point: [R152]: 66.666MHz OK?
• [IC101](SXT2LF-400): [PCICLK]
Check point: [R142]: 33MHz OK?
• [IC701~704](EM6A9320BI-4MG): [ACK]
Check point: [R717]: 250MHz OK?
N.G.
Check Soldering.
• Circumference of [X101](66.666MXTAL)
• Circumference of [IC101]
• Circumference of [IC701~704]
O.K.
Check control signal for I/P Convertor [IC101].
GU-3752(IP UNIT)
• [RESETN], [IIC0_CLK], [IIC0_DAT]
N.G.
Check Soldering.
• [CY125]
• Circumference of [IC103](TC7W241FU)
O.K.
Check Digital signal for Video[2].
GU-3749-2(VIDEO UNIT)
• [YO_0~YO_9], [CO_0~CO_9],
[P_VSYNC_1], [P_HSYNC_1],
[C_REF-1], [PS_CLK-1]
N.G.
Check Soldering.
• Circumference of [CY123,CY162]
O.K.
Check Digital output for Progressive Video[3].
GU-3752(IP UNIT)
• [IC101]output:
[YO_0~YO_9], [CO_0~CO_9],
[P_VSYNC], [P_HSYNC], [C_REF-1], [H_PS_CLK]
N.G.
Check Soldering.
• Circumference of [IC101]
• [R113~116, 117, 118, 120, 269, 449~456, 459~464,
468, 469]
• CX162, CX123
O.K.
Check Digital output for Progressive Video[2].
GU-3749-2(VIDEO UNIT)
• Video Encoder [IC501](ADV7324)input:
[YO_0~YO_9], [CO_0~CO_9],
[P_VSYNC_1], [P_HSYNC_1], [C_REF-1],
[PS_CLK-1]
N.G.
Check Soldering.
• [CY123, CY162]
• Circumference of [IC501]
O.K.
Check Video Buffer IC circuit.
GU-3749-2(VIDEO UNIT)
• [IC505]
N.G.
Check the soldering [IC505]
and circumference soldering [IC505]
O.K.
END
Содержание DVD-3930
Страница 43: ...43 DVD 3930 3930CI BLOCK DIAGRAM...
Страница 51: ...51 DVD 3930 3930CI BD7956FS MA IC151 BD7956FS Block diagram 1 27 54 28...
Страница 57: ...57 DVD 3930 3930CI CXD2753R MA IC401 Pin Assignment Block Diagram...
Страница 67: ...67 DVD 3930 3930CI ADV7324 MA IC501 550...
Страница 72: ...72 DVD 3930 3930CI PRINTED WIRING BOARDS GU 3749 MAIN A VIDEO P W B UNIT COMPONENT SIDE...
Страница 73: ...73 DVD 3930 3930CI FOIL SIDE...
Страница 74: ...74 DVD 3930 3930CI GU 3750 POWER DISPLAY P W B UNIT COMPONENT SIDE...
Страница 75: ...75 DVD 3930 3930CI FOIL SIDE...
Страница 76: ...76 DVD 3930 3930CI GU 3751 AUDIO P W B UNIT COMPONENT SIDE...
Страница 77: ...77 DVD 3930 3930CI FOIL SIDE...
Страница 78: ...78 DVD 3930 3930CI GU 3752 DIGITAL VIDEO P W B UNIT COMPONENT SIDE...
Страница 79: ...79 DVD 3930 3930CI GU 3793 FAN POWER P W B UNIT FOIL SIDE COMPONENT SIDE FOIL SIDE...
Страница 151: ...151 DVD 3930 3930CI WIRING DIAGRAM...
Страница 154: ...154 DVD 3930 3930CI GU 3749 2 VIDEO P W B V6 V7 V8 V1 V2 V3 V4 V5...