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LC-37XD1E/RU SUPPLEMENT
<0n input of the tuner (U/V)>
No picture appears on
LCD during the tuner
(U/V) reception.
Checklist:
1) Is "INPUT SOURCE" button
2) Is MENU-Picture-Contrast/Brightness set to "MIN" ? ... Set it to an appropriate level.
3) Is ANT-CABLE disconnected or connected improperly? ...Connect it correctly as per the operation manual.
YES
Is level of pins (15) and
(14) of tuner (TU201)
and pins (12) and (2) of
IC204 (MULTI) at H?
YES
Is the video signal (IF)
sent from pin (17) of
tuner (TU201)?
YES
Is the video signal
CVBS sent to pin
(AC23) of lC3002 (V-
PRO.)?
YES
Is LVDS video signal (TA1± - TD1±) sent to pins (AB8)/(AC8) -
(AB3)/(AC3) of IC3002 (V-PRO.), and is CLK signal (CK1±) sent to
pins (AB5)/(AC5)?
Is LVDS video signal (TA2± - TD2±) sent to pins (AC2)/(AC1) - (V2)/
(V1) of IC3002 (V-PRO.), and is CLK signal (CK2±) sent to pins
(Y2)/(Y1)?
YES
Is LVDS video signal (TA± - TD1±) sent to pins (3)/(2) -(12)/(11) of
CONNECTOR CN1 of LCD-CONT-UNIT, and is CLK signal (CK1±)
sent to pins (10)/(9)?
Is LVDS video signal (TA2± - TD2±) sent to pins (17)/(16) -(26)/(25)
of CONNECTOR CN1 of LCD-CONT-UNIT, and is CLK signal
(CK2±) sent to pins (24)/(23)?
YES
Is power (+12V) supplied to pins (1) - (5) of CONNECTOR CN2 in
LCD-CONT-UNIT?
YES
Replace LCD-CONT-UNIT.
on the remote control set up correctly? ... See the operation manual and set "INPUT SOURCE" to "TV".
NO
These are communica-
tions lines for control
(I2C). Follow the path and
check whether they are
forced to
L(PULL_DOWN).
NO
Check the tuner (TU201)
and peripheral circuits.
NO
Check CONNECTOR
(P201 /SC2705) and
peripheral circuits.
No picture on the display (1)
NO
Check pins (G14)/(U10) of BU3.3V line of IC3002 (V-PRO.),
pins (G10)/(N17) of BU2.5V line, pins (U16)/(G12) of BU1.8V
line and peripheral circuits.
NO
Check CONNECTOR (SC2302, CN1) and HARNESS WIRE
(LV).
NO
Check CONNECTOR (CN2,P707) and HARNESS WIRE
(PL).
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