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LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K

6 – 11

No picture appears on EXT1 connected monitor during the ATV reception.

Does CVBS signal output from pin [19] of EXT1 (SC505) ?

YES

Check the setting of an external input device that connects with EXT1 .

NO

Does CVBS signal output from pin [5] of IC510 ?
(CAPLESS VIDEO AMP with LPF)

YES

Check the line between  SC505 and  IC510 .

NO

Does CVBS signal input to pin [3] of IC510 ?

YES

Check the peripheral circuits of IC510 .

NO

Does CVBS signal output from pin [2] of IC507 ?

YES

Check the line between  IC507 and  IC510 .

NO

Is CVBS_OUT_MUTE [pin (1)] of IC507 at “L” ?

YES

Check the line between  IC3301 and IC507 .
Check the peripheral circuits of IC3301 ?

NO

Does CVBS signal input to pin [6] of IC507 ?

YES

Check the peripheral circuits of IC507 .

NO

In the case of LE855.858 series , refer to (A)
In the case of LE857 series , refer to (B)

(A)

(B)

Check the line between  IC507 and TUNER(TU1105).
(Q1106 etc)

Check the line between  IC507 and TUNER(TU1101).
(Q1106 etc)

LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K

6 – 12

No picture appears on EXT1 connected monitor during the DTV reception.

Does CVBS signal output from pin [19] of EXT1 (SC505)?

YES

Check the setting of an external input device that connects with EXT1.

NO

Does CVBS signal output from pin [5] of IC510 ?
(CAPLESS VIDEO AMP with LPF)

YES

Check the line between  SC505 and  IC510.

NO

Does CVBS signal input to pin [3] of IC510?

YES

Check the peripheral circuits of IC510.

NO

Does CVBS signal output from pin [2] of IC507?

YES

Check the line between  IC507 and  IC510.

NO

Is CVBS_OUT_MUTE [pin (1)] of IC507 at”H”?

YES

Check the line between  IC3301 and IC507.
Check the peripheral circuits of IC3301 ?

NO

Does CVBS signal input to pin [4] of IC507?

YES

Check the peripheral circuits of IC507.

NO

Does CVBS signal output from pin(AU30/CPU_VDACX_OUT) of 
IC3301(Digital AV decode & Main CPU) ?

YES

Check the line between  IC3301 and IC507.
Check the peripheral circuits of IC3301.

NO

Refer to “No picture on the display (3)(4)”

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.

LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K

6 – 13

Is the AC cord connector tightly 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 from  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         (IC1102 etc.)
12) STB+3.3V         (Q9602 etc.)
13) AVDD12_HDMISW    (IC2602)
14) CPU_ADAC+3.3V      (IC3303 etc.)
       (IC3302 etc...)
       (IC3105 etc...)
       (IC1903 etc...)

LC-60LE855E/K,60/70LE857E/RU,858E,70LE857K

6 – 14

Is the AC cord connector tightly 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 in 
the set?

NO

Reconnect the wire harnesses and other cables properly in the set.

YES

Does Power starts up (central Icon LED ilights up) ?

NO

Refer to "No power (central Icon LED failure to light up) or no startup 
(central Icon LED failure is flashing)"

YES

Is there the pins [16/PNL_POW] of [PD]P3801 at "H"?

NO

Check the power unit ,
and the signal line between PNL_POW and IC3301
(Digital AV decode & Main CPU) .

YES

Is there the pins [24/STB] of [PD]P3801 at "H"?

NO

Check the power unit , 
and the signal line between STB and IC2004(UCOM)/IC3301 .

YES

Replace the power unit.

Does a single or sev-
eral vertical stripes 
appear on the LCD 
screen?

Does a single or sev-
eral horizontal stripes 
appear on the LCD 
screen?

Do luminescent or 
black dots appear on 
the screen?

Is the on-screen image 
rippling or distorted?

Is there any por-
tion which some 
screens were 
darkish or became 
whitish?

Does all LED of 
one line are not 
lighting?

 Replace the LCD panel or the power unit.

The backlight functions.  
Does not the image come 
out in the LCD screen 
(screen black) ?

Does the entire LCD 
screen look whitish all 
over?

 Does the QS drive func-
tion?

Are the data bit drop-out?
(No solution even when 
turning on and off the QS 
drive)

Is the gamma correction as 
specified?

Replace the LCD_CONT_UNIT.