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LC-26GA5E
LC-32GD9E
LC-32GA5E
LC-37GD9E
LC-32/37GD8E/RU
LC-32/37BT8E/RU
Troubleshooting Table (continued)
TROUBLESHOOTING TABLE
<On input of the tuner>
(U/V)>
No picture appears on LCD during the tuner
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 (4) and (5) of
tuner (TU201) and pins (10)
and (11) of IC201 (IF-
DEMOD) at H?
YES
Is the video signal (IF) sent
from pin (8) of tuner
(TU201)?
YES
Is video signal sent from pin
(17) of IC201 (IF-DEMOD)?
YES
Is the video signal VIN1
(ATUNER-CVBS) sent to pin
(191) of IC3002 (VCT)?
YES
Is LVDS video signal (LVDS_0N/0P-3N/3P) sent to pins
(141)/(140) - (129)/(128) of IC3002 (VCTP), and is CLK signal
(LVDS_CN/CP) sent to pins (132)/(131)?
YES
Is LVDS video signal (LVDS_0N/0P-3N/3P) sent to pins (12)/(13) -
(24)/(25) of CONNECTOR CN1 of LCD-CONT-UNIT, and is CLK
signal (LVDS_CN/CP) sent to pins (21)/(22)?
YES
Is power (LCD5V) supplied to pins (2) – (5) of CONNECTOR CN1
in LCD-CONT-UNIT?
YES
Replace LCD-CONT-UNIT.
Check IC1705 and peripheral parts.
No picture on the display (1)
reception.(U/V) reception.
on the remote control set up correctly? ··· See the operation manual and set "INPUT SOURCE" to "TV".
These are communications
NO
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.
Check FL201 (SAW-FIL),
NO
IC201 and peripheral
circuits.
Check IC201 (IF-DEMOD),
NO
CONNECTOR
(P201/SC2705) and
peripheral circuits.
NO
Check pins (192)/(170)/(133) of BU3.3V line of IC3002 (VCTP),
pins (185)/(169)/(142) of 1.8V line and peripheral circuits.
NO
Check CONNECTOR (P2305, CN1) and HARNESSWIRE (LV).
NO
Is LCD5V supplied to pins (31) – (28) of CONNECTOR (P2305)?
NO
YES
Is IC 1705 supplying LCD 5V?
NO
Change IC1705.
32
48
(Continued)
Check HARNESSWIRE (LV).
YES
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