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The unit does not enter the DTV mode. Or, the DTV menu does 
not appear.

MAIN UNIT:
Check around the pin (1) of  IC1710(FPGA).

Go to "The unit does not enter the DTV mode. Or, the DTV menu 
does not appear."

No video output during DTV reception.

Go to "No video output during DTV reception."

No audio output during DTV reception.

Go to "No audio output during DTV reception."

Digital UNIT:
Is a voltage supplied from IC4701(3.3V-REG)/IC4704(1.8V-REG)?

D-TUNER UNIT:
Is a voltage of 5V supplied from IC205(SW) and IC206(SW)?

Is a voltage applied to pin(20) (I2CSEL) of P202? 
(High=3.3V)

Do X4001/X4002 oscillate?

Check peripheral circuits of IC4701/IC4704 and pin(7) of IC4701. 

Check peripheral circuits of X4001/X4002.

Check peripheral circuits of IC205/IC206.

Is CLK/DATA signal sent to pins (21) and (22) of P202 and pins (1) 
and (13) of IC204 (COFDM).

Check peripheral circuits of IC202(COFDM)/ IC4001(D-Processor).

Does X202 oscillate?

Check IC202(COFDM)/IC4001(D-Processor).

Check peripheral circuits of X202.

Check power supply and pins (9) and (10)of IC2704(SW) and 
audio signal input of pins (4) and (11) of IC2704.

Check Q4601... Q4607 and their peripheral circuits.

Check R272 and R273.

Are scrambled images not displayed?

DIGITAL UNIT:
Is audio signal fed to pins (5) and (10) of IC4604 (OP-AMP)?

Are video signals (R/G/B,CVBS) send from the 
C4636/C4637/C4638 and emitters of Q4607?

Check power supply and pin (1) of IC2705(SW).

MAIN UNIT:
Is video signal (CVBS) sent from pin (2) of IC2705(SW).

Are video signals (R/G/B,CVBS) fed from pins (179),(180),(181) 
and (184) of IC3002?

MAIN UNIT:
Is audio signal sent to pin (3) and (13) of IC2704 (SW)?

Is audio signal sent from pins (7) and (8) of IC4604(OP-AMP)?

Check R4002(AD2pin) and IC4001(D-Processor).

Check power supply of IC4604(OP-AMP) and its peripheral circuits.

D-TUNER UNIT:
Is data FED[0:7] sent from pins (3),(4),(5),(6),(8),(9),(10) and (11) 
of P202?

DIGITAL UNIT:
Check 5V output of pin (1) of IC4702.
Check 5V of pin (6) of Q4401.

Check R4011(AC8pin),R4013(AC9pin) and IC4001(D-Processor).

DIGITAL UNIT:
Are video signals (R/G/B,CVBS) sent from 
C4639/C4640/C4641/C4625?

No EXT1-Composite output of the external 
input system.

Checklist:
1) Is "INPUT SOURCE" button        on the remote control set up correctly? ··· See the operation manual and set "INPUT SOURCE" to "EXT1".
2) Is MENU-PICTURE-CONTRAST/BRIGHTNESS set to "MIN"? ··· Set it to an appropriate level.
3) Check the connection to the external device ··· Connect it correctly as per the operation manual for the device.

No EXT1-RGB output of the external input 
system.

No EXT1-Y/C output of the external input 
system.

Is composite video 
signal sent to pin 
(20) of SCART1 
(J1101)?

Check external 
connection, input 
setting, SCART1 
(J1101) and 
peripheral circuits.

Is RGB signal sent 
to pins (15), (11) 
and (7) of SCART1 
(J1101)?

Check external 
connection, input 
setting, SCART1 
(J1101) and 
peripheral circuits.

Is Y/C signal sent 
to pins (20) and 
(15) of SCART1 
(J1101)?

Check external 
connection, input 
setting, SCART1 
(J1101) and 
peripheral circuits.

Is composite video 
signal (VIN_1) 
sent to input 
terminal pin (6) of 
IC2702 (SW)?

Check 
CONNECTOR 
(SC2702/P1101),
SCART1 (J1101) 
and peripheral 
circuits.

Is RGB signal 
(R1/G1/B1=VIN_6/
5/9) sent to input 
terminal pins 
(187), (175) and 
(182) of IC3002 
(VCT)?

Check 
CONNECTOR 
(SC2702/P1101),
SCART1 (J1101) 
and peripheral 
circuits.

Is Y/C signal 
(VIN1=Y1/C1) sent 
to input terminal 
pins (190) and 
(187) of IC3002 
(VCT)?

Check 
CONNECTOR 
(SC2702/P1101),
SCART1 (J1101) 
and peripheral 
circuits.

Is composite video 
signal
(CVBS1=VIN2)
sent to input 
terminal pin (190) 
of IC3002 (VCT)?

Check IC2702 
(SW) and 
peripheral circuits.

Is LVDS signal (LVDS_0N/0P-3N/3P) sent from pins (141) and (140) - (129) and (128) of IC3002 
(VCTP), and is CLK signal (LVDS_CN/CP) sent from pins (132) and (131)?

Check pins (192), (170) and (133) of BU3.3V 
power line and pins (185), (169) and (142) of 
BU1.8V power line of IC3002 (VCTP), and 
peripheral circuits.

Replace LCD-CONT-UNIT.

Is LVDS signal (LVDS_0N/0P-3N/3P) sent to pins (12) and (13) - (24) and (25) of CONNECTOR 
CN1 in LCD-CONT-UNIT, and is CLK signal (LVDS_CN/CP) sent to pins (21) and (22)?

Check CONNECTOR (P2305, CN1) and 
Harness Wire (LV).

Is power (LCD5V) supplied to pins (2) – (5) of CONNECTOR CN1 in LCD-CONT-UNIT?

 Check HARNESSWIRE (LV).

 Is IC1705 supplying LCD 5V?

 Check IC1705 and peripheral parts.

 Change IC1705.

 Is LCD5V supplied to pins (31) - (28) of 

 CONNECTOR (P2305)?

Check power supply and pins (9) and (10)of IC2704(SW) and 
audio signal input of pins (4) and (11) of IC2704.

Check Q4601... Q4607 and their peripheral circuits.

Check R272 and R273.

Are scrambled images not displayed?

DIGITAL UNIT:
Is audio signal fed to pins (5) and (10) of IC4604 (OP-AMP)?

Are video signals (R/G/B,CVBS) send from the 
C4636/C4637/C4638 and emitters of Q4607?

Check power supply and pin (1) of IC2705(SW).

MAIN UNIT:
Is video signal (CVBS) sent from pin (2) of IC2705(SW).

Are video signals (R/G/B,CVBS) fed from pins (179),(180),(181) 
and (184) of IC3002?

MAIN UNIT:
Is audio signal sent to pin (3) and (13) of IC2704 (SW)?

Is audio signal sent from pins (7) and (8) of IC4604(OP-AMP)?

Check R4002(AD2pin) and IC4001(D-Processor).

Check power supply of IC4604(OP-AMP) and its peripheral circuits.

D-TUNER UNIT:
Is data FED[0:7] sent from pins (3),(4),(5),(6),(8),(9),(10) and (11) 
of P202?

DIGITAL UNIT:
Check 5V output of pin (1) of IC4702.
Check 5V of pin (6) of Q4401.

Check R4011(AC8pin),R4013(AC9pin) and IC4001(D-Processor).

DIGITAL UNIT:
Are video signals (R/G/B,CVBS) sent from 
C4639/C4640/C4641/C4625?

No sound from an external 
input device connected to 
EXT1 (SCART1).

No sound from an external 
input device connected to 
EXT2 (SCART2).

No sound from an 
external input device 
connected to EXT3.

No sound from EXT4 
(AUDIO) connecting an 
external input device.

No sound from EXT5 
(AUDIO) connecting an 
external input device.

<EXT1>
Is IN1-L audio signal sent 
from pin (6) of SCART1 
terminal (J1101) to pin 
(14) of IC3002 (VCT)?
Is IN1-R audio signal sent 
from pin (2) of SCART1 
terminal (J1101) to pin 
(13) of IC3002 (VCT)?

<EXT2>
Is IN2-L audio signal sent 
from pin (27) of SCART2 
terminal (J1101) to pin 
(12) of IC3002 (VCT)?
Is IN2-R audio signal sent 
from pin (23) of SCART2 
terminal (J1101) to pin 
(11) of IC3002 (VCT)?

<EXT3>
Is IN3-L audio signal 
sent from pin (3) of 
J1201 terminal to pin 
(16) of IC3002?
Is IN3-R audio signal 
sent from pin (5) of 
J1201 terminal to pin 
(15) of IC3002?

Is the audio signal 
properly sent from pins 
(28) and (27) of IC3002?

Check IC3002 or 
peripheral circuits.

Is the audio signal of 
pins (1) and (7) of IC303 
(OP-AMP) sent properly?

Check IC303 or 
peripheral circuits.

<EXT4>
Is D-SUB-L audio signal 
sent from J2702 to pin 
(15) of IC2704?
Is D-SUB-R audio signal 
sent from J2702 to pin 
(2) of IC2704?

Is D-SUB-L audio signal 
sent to pin (10) of 
IC3002?
Is D-SUB-R audio signal 
sent to pin (9) of 
IC3002?

<EXT5>
Is HDMI-L audio signal 
sent from J2701 to pin 
(14) of IC2704?
Is HDMI-R audio signal 
sent from J2701 to pin 
(5) of IC2704?

Check pins (6) and 
(2) of SCART1 and 
connection to an 
external input 
device.

Check pins (27) and 
(23) of SCART2 and 
connection to an 
external input 
device.

Check pins 3 
(J1201) and 5 
(J1201) of EXT3 
and connection to 
an external input 
device.

Is HDMI-L audio 
signal sent to pin 
(10) of IC3002?
Is HDMI-R audio 
signal sent to pin (9) 
of IC3002?

Is the audio output 
signal of pins (13) and 
(16) of IC302/IC301 
(MAIN-AMP) normal?

Check IC302/IC301 
(MAIN-AMP),
HEADPHONE and 
peripheral circuits.

Check CONNECTOR 
(P301) and Speaker 
(right and left).

Check output of pins 
(13) and (3) of 
IC2704 and 
peripheral circuits.

Check that Option-
HDMI Setup-Audio 
select is set to 
"Analog".

No picture appears on LCD during the tuner reception.

(U/V) reception.

Checklist:
1) Is "INPUT SOURCE" button        on the remote control set up correctly? ··· See the operation manual and set "INPUT SOURCE" to "TV".
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.

Is level of pins (4) and (5) of 
tuner (TU201) and pins (10) 
and (11) of IC201 (IF-
DEMOD) at H?

These are communications 
lines for control (I2C). Follow 
the path and check whether 
they are forced to L 
(PULL_DOWN).

Is the video signal (IF) sent 
from pin (8) of tuner 
(TU201)?

Check the tuner (TU201) 
and peripheral circuits.

Is video signal sent from pin 
(17) of IC201 (IF-DEMOD)?

Check FL201 (SAW-FIL), 
IC201 and peripheral 
circuits.

Is the video signal VIN1 
(ATUNER-CVBS) sent to pin 
(191) of IC3002 (VCT)?

Check IC201 (IF-DEMOD), 
CONNECTOR 
(P201/SC2705) and 
peripheral circuits.

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)?

Check pins (192)/(170)/(133) of BU3.3V line of IC3002 (VCTP), 
pins (185)/(169)/(142) of 1.8V line and peripheral circuits.

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)?

Check CONNECTOR (P2305, CN1) and HARNESSWIRE (LV).

Is power (LCD5V) supplied to pins (2) – (5) of CONNECTOR CN1 
in LCD-CONT-UNIT?

Replace LCD-CONT-UNIT.

Is LCD5V supplied to pins (31) – (28) of CONNECTOR (P2305)?

 Check HARNESSWIRE (LV).

 Is IC 1705 supplying LCD 5V?

 Check IC1705 and peripheral parts.

 Change IC1705.