Denon DVD-A1UDCI, Service Manual

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38
DVD-A1UDCI
5. 8U-310002 (VIDEO UNIT)
5.1. Video output does not be outputted.
Check Power Supply Voltages.
• +5V_DV, +6V_HDMI
• +6V_AV
N.G.
Check Soldering.
• [CX051] 2-3pin, 1pin
• [CX031] 1pin
• Check cable insertion.
O.K.
Check Control Signal for Power Supply.
[CX404]
• 3pin(MVPOWER): High 3.3V
N.G.
Check FFC cable insertion.
Continue to the check process of
8U-310001(Main Unit)
O.K.
Check Power Supply Voltages.
• +3.3V_DV, +1.8V_DV, +1.0V_DV
• +1.5V_IPC, +2.5V_IPC, +1.25V_VTT
• +5V_HDMI
• +1.8V_DDR2, +0.9V_VTT
• +5V_AV, +3.3V_AV, +1.8V_AV
N.G.
Check Soldering.
• [IC104][IC105][IC106]
• [IC215][IC214][IC210]
• [IC503]
• [IC701][IC702]
• [IC805][IC804][IC803]
and Circumference
O.K.
Check control signal from Main Unit (8U-
310002)
[CX801]
• 55pin(/RLT_RST): High, 3.3V
• 59pin(/V_RST) : High, 3.3V
• 67pin(ABT_SCL) and 71pin(ABT_SDA)
: I2C Control, 0/3.3V, 100
〜
400kHz
• 68pin(/RLT_SCL) and 72pin(RLT_SDA)
: I2C Control, 0/3.3V, 100
〜
400kHz
N.G. Continue to the check process of
8U-310001(Main Unit)
O.K.
Check Digital Video signal input from Main
Unit (8U-310002)
[CX801]
• 3pin: PXD_CLK, 74.176MHz/74.25MHz(BD),
PXD_HS, PXD_DE, PXD_VS
PXD_Y[11:4], PXD_CbCr[11:4]
• 50pin: SDPX_CLK, 27MHz(DVD)
SDPX_HS, SDPX_VS
SDPX_S[7:0]
N.G.
Continue to the check process of
8U-310001(Main Unit)
O.K.
Continue to the check process of each Video ter-
minal