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<Signals>

External input in trouble <EXT 4> 

External input in trouble <EXT 4> 

Components SD

Components HD

Confirmation of the settings:

1) Is "INPUT MODE" of remote control set properly?.... Set "INPUT MODE" to EXT.4 referring to the operation manual.

2) Is MENU-CONTRAST/BRIGHTNESS set to "MIN"?... Set to the desired level.

                                      YES

                                      YES

Select EXT 4 and the input signal

  NO

Is EXT 4 selected in the input 

Is EXT 4 selected in the input 

NO

Select EXT 4 in the 

in the input switching menu screen

switching menu screen ?

switching menu screen ?

input switching menu screen

                                      YES

                                               YES

Select SD in main menu 

→

 AV set-up 

→

  NO

Is SD select in Main menu?

Is HD select in Main menu?

NO

Select HD in main menu 

→

 AV set-up 

→

Ext 4 

→

 SD

Ext 4 

→

 HD

                                      YES

                                               YES

Check IC2001  and 

  NO

Is there Y, Pr and Pb signal outputs at pins 

Is there Y, Pr and Pb signal outputs at pins 

NO

Check IC2001 

 and 

peripherical components

3, 5 and 6 of IC 2101 as specified ?

3, 5 and 6 of IC 2101 as specified ?

peripherical components

                                      YES

                                               YES

Check Q2101, 2102, 2103, 2104, 2105

  NO

Is there Y, Pr and Pb signal at pins 2, 4 and 6 

Is there Y, Pr and Pb signal at pins 1, 

3 and

NO

Check Q2101, 2107, 2108

and 2106 and peripherical components

 of P2102 as specified ?

5 of P2101 as specified ?

2109 and peripherical components

                                      YES

                                               YES

Check IC 1403, Q 1412 and

  NO

Is there Y, Pr and Pb signal input at pins 

Is there Y, Pr and Pb signal input at pins 

NO

Check Comp

onents unit PWB and 

peripherical components

67, 68 and 69 of IC 1001 as specifed ?

13, 6 and 3 of IC 1801 as specifed ?

peripherical components

                                               YES

Is there Y, Pr and Pb signal output at pins 

NO

Check IC 1801, IC 1802 and

12 , 4 and 7 of IC1801 as specifed ?

peripherical components

                                               YES

Is there Y, Pr and Pb signal output at pins 

NO

Check IC 2203 , IC 1803 and

12 , 9 and 7 of IC2203 (RGB-SW) as specified ?

peripherical components

Is there Y, Pr and Pb signal input at pins 

NO

Check IC 2201 and

37, 43 and 50  of IC2201 (SCALER) as specified ?

peripherical components

 Checklist:
 1) Is "INPUT MODE" button      on the remote control set up correctly?..........See the operation manual and set "INPUT MODE" to EXT
 2) Is MENU CONTRAST/BRIGHTNESS set to "MIN"?........................................Set it to an appropriate level.
 3) Is CABLE disconnected, or incorrectly connected?.......................................Connect it correctly as per the operation manual.

      NO

 COMPONENT-UNIT

NO COMPONENT-UNIT:

YES  COMPONENT-UNIT:

 Are Y, Pb and Pr signals sent from pins

Are HDMI-Y, Pb and Pr signals 

 Check IC2101 or

 (6), (5) and (3) of IC2101 (A-SW)?

sent from pins (9), (14) and (1)

 peripheral circuits

 of IC2101 (A-SW)?

YES

NO

 Check P2205/P2101 

NO  MAIN-UNIT:

HDMI-UNIT:

YES CONNECTOR

 CONNECTOR, Q2107_9

 Are Y, Pb and Pr signals

Is HDMI-Y/ Pb/Pr signal sent to 

between COMPONENT

 and peripheral circuits.

  sent to pins (6), (3) and

pins (17, (14) and (20) of IC1904?

HDMI-UNIT Check P21

 (13) of IC1801?

and peripheral circuits.

YES

NO

 Check IC2203, IC1803

NO  Are Y, Pb and Pr signals

 HDMI-UNIT:

YES  HDMI-UNIT:

 and peripheral circuits.

 sent to pins (12), (9) and

 Is LVDS signal sent to pins (71-58)

 Check IC1904 or perip

 (7) of IC2203?

of IC1904?

 circuits.

YES

NO

 Check IC2201 and

NO  Are Y, Pb and Pr signals

HDMI-UNIT:

YES  HDMI-UNIT:

 peripheral circuits

 sent to pins (43), (50) and

Is LVDS signal sent to pins (71-58)

 Check HDMI-Termina

 (37) of IC2201?  (SCALER)

of HDMI-Terminal SC1901?

 or peripheral circuits.

YES

NO

Check HDMI-Terminal and
external connection

 Are video digital ouput signals ( DOR 124 - 131 ), ( DOG 114 - 121 ), ( DOB 99 - 113 ), ( DER 89 - 98 ),

NO Check IC2201 (LVDS),

 ( DEG 79 - 88 ) and ( DEB 66 - 78 ) of IC2201 (SCALER) sent properly?

 (F MEMORY) and per
 circuits.

YES

 Are digital video signals (TA1± ~ TD1± ) and (TA2 ± ~ TD2 ± ) sent to pins (3) - (16) and (18) - (31) of 

NO  Check IC2207 and pe

 MAIN PWB-LV connector SC2201 respectively?

 circuits.

YES

Check LCD-CONT-UNIT.

 <On HDMI input>

  No EXT5-MDMI signal during external input

External input in trouble <PC INPUT>

Is "Ext. Sources menu "

Set "Ext Sources menu " to PC INPUT

set properly ?

referring to the operation manual

Check SC 2801 and peripheral

Are there synchro signal input at

Is there video on screen ?

components

pins (1) and (13) of IC 2205

Check IC 2205 , IC1803 and

Are synchro signal output at

Are  R,G,B  signal input at pins 

Check SC 2801 and peripheral

peripheral components

pins (14) and (15) of IC 2205?

(6) (10) and (13) of IC 2203 ?

components

Check IC 2206 and peripheral

Are synchro signal output at

components

pins (6) and (11) of IC 2206?

Are R,G,B  signal output at pins

Check IC 2203 , IC1803 and

(7) (12) and (9) of IC 2203 ?

peripheral components

Check IC 2201 and peripheral

Are there synchro signal input at

components

pins (64) and (65) of IC 2201 ?

Are R,G,B  signal input at pins 

Check IC 2201 and peripheral

(37) (43) and (50) of IC 2201 ?

components

Dur

ing TUNER 

reception:

No picture appears on EXT1-connected 

monitor

.

Chec

klist:

1) Are input ter

minal on bac

k of 

TV and "INPUT MODE" b

utton        on the remote control set up correctly?........See the oper

a

tion man

ual and set 

    "INPUT MODE" appropr

iately

.

2) Is the specified de

vice selected f

or Signal 

T

ype (item) in MENU-SETUP-A

V SETUP-EXT?...............................Set it to 

"VCR or D

VD or A

UT

O".

F

rom EXT1:

No picture appears on EXT2-connected 

monitor

.

F

rom EXT1/EXT2:

No picture appears on EXT3-connected 

monitor

.

Is VIDEO 

signal 

sent to pin (19) of 

SCAR

T1?

Chec

k e

xter

nal 

connection or input 

setting.

Is VIDEO 

signal 

sent to pin (19) of 

SCAR

T2?

Chec

k e

xter

nal 

connection or input 

setting.

Is VIDEO 

signal 

sent to pin (2) of 

EXT3?

Chec

k e

xter

nal 

connection or inpu

t

setting.

Is VIDEO 

signal 

(VIN1) sent to pin 

(66) of IC1001?

Chec

k the po

w

er 

line of IC1001 and 

per

ipher

al circuits

.

Is VIDEO 

signal 

(VIN2) sent to pin 

(64) of IC1001?

Chec

k the po

w

er 

line of IC1001 and 

per

ipher

al circuits

.

Is VIDEO 

signal 

(FR

ONT

A

V) sent 

to pin (60) of 

IC1001?

Chec

k the po

w

er 

line of IC1001 and

per

ipher

al circuits

.

Chec

k that 

VIDEO 

signal is sent to 

pin (20) of 

SCAR

T1.

Chec

k that 

VIDEO 

signal is sent to 

pin (20) of 

SCAR

T2.

Chec

k that 

VIDEO 

signal is sent to 

pin (3) of EXT3.

Inside the power supply unit: Has the fuse 

F705 1A on the inverter circuit burnt out?

Is power supplied to the I

NVERTER PWB? 

(Vin, 3.5VAC)

Are PWBs 

properly connected with 

harnesses?

(Power sup

ply unit, INVERTER PWB,

 

INVERTER-G

ND PWB, LCD 

CONTROLL

ER PWB)

Connect properly

 or replace harnesses.

Check the inverter circuit behind the burnt 

fuse.

Inside the power supply unit: Is each 

control signal 

sent to CN704? (Pin (11) 

of 

OFL1, pin (

13) of INV.OSC)

Check the connect

ors of each fluorescen

t 

lamp and inverter circuit.

Check IC4501 (LCD CONT

ROL) and its 

peripheral circuits.