Sharp LC-60G9T - Page 52

LC-60G9T / LC-70G9T
6 – 10
[External input Network] No picture on the display
Does not the signal input to Network go out?
Does the signal in/output to pins(1),(2),(3),(6) of LAN-jack
(J9401)?
NO Check the interface device and peripheral circuits.
(power-LED of hub, LINK-LED of hub)
YES
Do signals in/output to pins of IC3301 (Digital AV decode & Main
CPU)?
Pins [AU18&AT18/CPU_DATMDI_RJ45_TNP, AU17&AT17/
CPU_DATMDI_RJ45_RNP]
NO Check the line between IC3301 and J9401.
(T9401 etc)
YES
Check IC3301 and its peripheral circuits.
No power ( No LED light up ) or No startup ( LED RED Blinking )
Is the AC cord connector tigh tly connected to the set? NO Reconnect the AC cord tightly and turn on the power again.
YES
Are the wire harnesses and other cables properly connected to
the set?
NO Reconnect the wire harnesses and other cables properly to the set.
YES
Is power supplied fr om pins [15/BU+5V] of [PD]P3801 ? NO Replace the power unit.
YES
Is there the pins [14/PS_ON] of [PD]P3801 at “H”? NO Check the signal line between PS_ON and IC2004(UCOM)/
IC3301(Digital AV decode & Main CPU) .
YES
Is there the pins [13/AC_DET] of [PD]P3801 at "H"? NO Check the power unit ,
and the signal line between AC_DET and IC2004/IC3301.
YES
Is power supplied from pins [5~8/UR+13V] of [PD]P3801 as
specified?
NO Check the line between PS_ON and IC2004/IC3301 .
YES
Are the DC/DC converter outputs and the output voltages along NO Check the DC/DC converters and the control lines.
Replace defective parts as required.
1) BU3.3V (IC9605 etc.)
2) D5V (IC9607 etc.)
3) U5V (IC9607 etc.)
4) D3.3V (IC9606 etc.)
5) M2.3V (IC9601 etc.)
6) D1.5V (IC9604 etc.)
7) D1.2V (IC9603 etc.)
8) AT5V (IC1104 etc.)
9) TE+1.2V (IC1102 etc.)
10) IF+1.8V (IC1109 etc.)
11) SAT+1.2V (IC11 02 etc.)
12) STB+3.3V (Q9602 etc.)
13) AVDD12_HDMISW (IC2602)
14) CPU_ADAC+3.3V (IC3303 etc.)
(IC3302 etc...)
(IC3105 etc...)
(IC1903 etc...)