Denon DVD-3930 Service Manual page 34

3. GU-3749-2 (VIDEO UNIT)
(1) Interlace output [Y, Cb, Cr] does not outputted.
Check Power Supply Voltages.
GU-3749-2(VIDEO UNIT)
• Digital Power Supply Voltages.
+5V_V3, +3.3V_D3, +2.5V_V1
O.K.
Check Digital signal for Video[1].
GU-3749-2(VIDEO UNIT)
• Video Encoder [IC501](ADV7324) input:
[YUV0~7]
[CLK_P/I]
O.K.
Check control signal for Video Encoder [IC201].
GU-3749-2(VIDEO UNIT)
• [SDA1], [SCK1], [RST_V]
O.K.
Check Video Encoder circuit.
GU-3749-2(VIDEO UNIT)
• [IC501]
O.K.
Check Video Buffer circuit.
GU-3749-2(VIDEO UNIT)
• Yp/Yi: [TR502]
• Pb/Cb: [TR503]
• Pr/Cr: [TR504]
O.K.
Check Video Buffer IC circuit.
GU-3749-2(VIDEO UNIT)
• [IC505]
O.K.
Check Clamp circuit.
GU-3749-2(VIDEO UNIT)
• Output Terminal: [JK706~708].
O.K.
END
Check Soldering.
N.G.
• [CY071], [IC500]
• Circumference of [IC500](BA25BCOFP-E2)
Check Soldering.
• [CY211]: 11-18, 20pin
N.G.
• Circumference of [IC501]
• Circumference of [IC503](SN74LVC157APW)
Check Soldering.
N.G.
• [CY211]: 1, 2, 4-7pin
• Circumference of [IC501, IC502]
Check the soldering [IC501]
N.G.
and circumference soldering of [IC501]
Check the soldering [TR502~504]
N.G.
and circumference soldering of [TR502~504]
Check the soldering [IC505]
N.G.
and circumference soldering of [IC505].
Check the soldering[JK706~708]
N.G.
and circumference soldering of [JK706~708].
3. GU-3749-2 (VIDEO UNIT)
(1) インターレース映像 [Y, Cb, Cr] 出力せず
電源電圧確認
GU-3749-2(VIDEO UNIT)
･ デジタル電源
+5V_V3, +3.3V_D3, +2.5V_V1
O.K.
映像用デジタル信号の確認 [1]
GU-3749-2(VIDEO UNIT)
･ ビデオエンコーダー [IC501](ADV7324) 入力 :
[YUV0 ∼ 7]
[CLK_P/I]
O.K.
[IC501] 制御信号の確認
GU-3749-2(VIDEO UNIT)
･ [SDA1], [SCK1], [RST_V]
O.K.
ビデオエンコーダー回路の確認
GU-3749-2(VIDEO UNIT)
･ [IC501]
O.K.
ビデオバッファー回路の確認
GU-3749-2(VIDEO UNIT)
･ Yp/Yi: [TR502]
･ Pb/Cb: [TR503]
･ Pr/Cr: [TR504]
O.K.
ビデオバッファー IC 回路の確認
GU-3749-2(VIDEO UNIT)
･ [IC505]
O.K.
ビデオ出力端子の確認
GU-3749-2(VIDEO UNIT)
･ 出力端子 : [JK706 ∼ 708].
O.K.
終了
34
DVD-3930/3930CI
半田付けを確認
N.G.
･ [CY071], [IC500]
･ [IC500] (BA25BCOFP-E2) 周辺回路
半田付けを確認
･ [CY211]: 11-18, 20pin
N.G.
･ [IC501] 周辺回路
･ [IC503](SN74LVC157APW) 周辺回路
半田付けを確認
N.G.
･ [CY211]: 1,2,4-7pin
･ [IC501, IC502] 周辺回路
N.G.
[IC501] とその周辺回路の半田付けを確認
N.G.
[TR502 ∼ 504] とその周辺回路の半田付けを確認
N.G.
[IC505] とその周辺回路の半田付けを確認
N.G.
[JK706 ∼ 708] とその周辺回路の半田付けを確認