Troubleshooting Table - Sharp LC-60LE822E Service Manual

LC-60LE822E/LC-60LE822ERU
CHAPTER 7.
LC-60LE822E

TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE
No power (Central Icon LED failure to light up) or No startup (Central Icon LED is flashing)
Is the AC cord connector tightly connected to the set?
Are the wire harnesses and other cables properly connected in
the set?
Is there the pins (11/BU+5V) of P9601as specified?
Is there the pins (10/PS_ON) of P9601 at "H"?
Is there the pins (9/AC_DET) of P9601 at "H"?
Is there the pins (1, 2, 3, 4/UR+13V) of P9601 at "H"?
Are the DC/DC converter outputs and the output voltages along
the control lines as specified?
1) BU3.3V (IC9609 etc.)
2) D3.3V (IC9605 etc.)
3) D5.6V (IC9608 etc.)
4) D5V (IC9612 etc.)
5) D+1.8V (IC9606 etc.)
6) D+1.05V (IC9604 etc.)
7) STB+3.3V (Q9604 etc.)
8) S+8V (IC9610 etc.)
9) CPU+1.2V (IC9603 etc.)
YES
YES
YES
YES
YES
YES
Service Manual
NO Reconnect the AC cord tightly and turn on the power again.
NO Reconnect the wire harnesses and other cables properly in the
set.
NO Replace the power unit.
NO Check the signal line between PS_ON and IC2002.
NO Check the power unit, and the signal line between AC_DET and
IC2002.
NO Check the signal line between PS_ON and IC2002.
NO Check the DC/DC converters and the control lines.
Replace defective parts as required.
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