29
Is the Fuse opened?
•
POWER PCB
• F901, F902, F904, F905
Is all AC voltage normal?
•
POWER PCB
・CN96 pin1-2pin : around 7V (AC)
・CN96 pin3-4pin : around 18V (AC)
・CN95 pin1-2pin : around 7V (AC)
・CN95 pin4-5pin : around 5V (AC)
Replace any fuse.
Replace main transformer.
NO
NO
YES
YES
YES
NO
END
Check control signal
•
POWER PCB
・WF91 6pin (NET 3.3 STB) : +3.3V
・WF91 7pin (CTL +5USBA) : +3.3V
・WF91 8pin (CTL +1.2NET) : +3.3V
・WF91 9pin (CTL +3.3NET) : +3.3V
・WF91 11pin (CTL +3.3DSP) : +3.3V
・WF91 13pin (CTL +1.8DSP) :+ 3.3V
Check DC voltage
•
POWER PCB
・IC903 4pin : +3.3V
・IC901 4pin : +1.2V
・IC907 2pin : +3.3V
・IC908 3pin : +1.8V
・IC909 3pin : +1.2V
・IC912 2pin : +3.3V
・IC904 3pin : +5V
Check control signal
•
DIGITAL PCB
・IC11 77pin (NET 3.3 STB) : +3.3V
・IC11 99pin (CTL +5USBA) : +3.3V
・IC11 61pin (CTL +1.2NET) : +3.3V
・IC11 63pin (CTL +3.3NET) : +3.3V
・IC11 119pin (CTL +3.3DSP) : +3.3V
・IC11 120pin (CTL +1.8DSP) :+3.3V
Check Soldering IC11 or replace IC11.
Check Soldering all control line and N2903.
•
POWER PCB
Check Soldering or replace each device
NO
NO
YES
Summary of Contents for NA8005
Page 8: ...Personal notes 8 ...
Page 24: ...19 Personal notes ...
Page 38: ...38 Personal notes ...
Page 43: ...WIRING DIAGRAM 43 ...
Page 56: ...Personal notes Personal notes 56 ...
Page 62: ...62 PCM9211 DIGITAL IC42 PCM9211 Block Diagram ...
Page 63: ...63 PCM9211 Pin Discriptions ...
Page 66: ...66 CS2000 CP DIGITAL IC43 CS2000 CP Block Diagram ...
Page 69: ...69 MFI337S3959 DIGITAL IC25 ...
Page 70: ...70 2 DISPLAY S020 MXS4035A 3 ...