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OPTION SETTING

[Afterreplacing the Memory IC(IC803)]The memory IC, IC803, stores the option data of TV set and service adjustments data for each circuit, therefore,when the memory ICis replaced, it should be performed following setting and SERVICE ADJUSTMENT on nextpage.

To enterto the Option Mode+ Press and hold the F/OK button on the remote controland Pwbutton on the front panelof the TV.The option win-

dowwillappear on the screen. Enter the settingsasshown below.

To set the option mode+ Highlight the desired option item by using the Pvor Pwbutton .

+ To switch the option mode, use the Volume - (LEFT) or Volume + (RIGHT) button.+ The data which is set in the option mode is stored into the memoryICautomatically.

Following table shows the available option items and default setting mode.

Exit from the Service Mode

+ Press the RECALL button.

O pt io n Mo de M od e D es cr ip ti on & N o te

ON-TI MER ONor OFF On-t imer av ailable, def aul t ON

SORT MODE AUTO TUNE/SORT Tuning mode, default AUTO TUNING"

or AUTO TUNING

or ATSEURO PLUS

PLUG &PLAY ONor OFF Plug &Play mode, def aul t ON

WELCOMETEXT ONor OFF Displaymessage when first set up, default OFF

CODETEST OFF or ON For f ac tory us e, def aul t OFF

WSS ONor OFF Wide Sc reen Signal ing av ailable, def aul t ON

W I DE O N o r O F F W i de m o de , d e fa u lt O N

OPTION 4 LANGUAGEor ALL LANGUAGor GBONLY

Destination option , default 4 LANGUAGE

312/ 313 Mode ONor OFF Telet ex t mode, def aul t OFF

AV3 OPT ION ONor OFF F ront AVdis able, def aul t ON

SI F OPT ION ONor OFF Televis ion s y s tem, def aul t BG I L/ L

O N- TI ME R O NSORTMODE AUTOTUNINGPLUG&PLAY ONW E LC O ME T E XT O NCODETEST OFFWSS ONWIDE ONOPTION 4LANGUAGE3 1 2/ 31 3 Mo de O NA V3 OP TI ON O N3DSURROUND ONSIFOPTION B G I L / L '

OPTION

A D JU ST : EX I T : R EC A L L

AUTOVOLUME OFF

ONor OFF Aut o v olume, def aul t ON AUTO VOLUME

ADJUSTMENTS

IMPORTANTNOTICE

Do not attempt to adjust the following service adjustments except when adjustments are required in servicingotherwise it may cause loss of performance and product safety.

1.Receive white raster pattern.2.Set controls to normal.3.Connect digitalvoltmetre to test point TP-Band GND.4.Adjust voltage to 130 0.5Vusing VR641 (21" model).

Adjust voltage to 150 0.5Vusing VR641 (25" model).Adjust voltage to 150 0.5Vusing VR641 (28" model).

1.Input and tune a VHF RF signalwhich has thestrongest signalstrength.

2.Connect digitalvoltmetre to test point TP-Aand GND.4.Enter to the service mode and select mode REGU-

LAR, and select item no.1 REGULAR1, AGC.5.Press the LEVEL+ or LEVEL - button to adjust voltage

to be 3.2Vdc.

By using FOCUSVR, adjust focus controlfor welldefined scanning lines.

SCREENADJUSTMENT1.Receive black &white pattern.2.Enter to the service mode and select mode REGU-

LAR, and select item no.2 REGULAR2, CUT.Thehorizontalline willappear on the screen.

3.Set the SCREENVRfor one colour to be just visible.4.Using the numeri c buttons shown set each colour to

minimum bydecreasing to the point where anyfurtherdecrease resets the adjustment to maximum value.

BIASADJUSTMENT5.Byusing the buttons 1, 2, 4, 5, 7, 8 on the remote

control, adjust the line to be white.

The key allocation isas follows;

Button No.Operation1 I n cr e as e Re d2 D e cr e as e R ed4 I n cr e as e G r ee n5 D ecrease Green7 I n cr e as e B lu e8 D e cr e as e B lu e

DRIVEADJUSTMENT6.Select item no.3 REGULAR 3, GRY(G-Drive) or 4

REGULAR4, GRY(B-Drive) and adjust both initiallyto 3F.

7.Change data value of each item by using LEVEL+ orLEVEL - button to obtain the proper white balance.

PCCADJUSTMENT1.Receive cross hatch pattern and set screen mode to

FULL.2.Enter to the service mode and select mode WIDE,

and select item no.7 WIDE7.PPCC.3.Press the LEVEL+ or LEVEL - button to adjust the

verticalline to be straight.

TRAPEZOIDADJUSTMENT1.Receive cross hatch pattern and set screen mode to

FULL.2.Enter to the service mode and select mode WIDE,

and select item no.8 WIDE8.PTRP.3.Press the LEVEL+ or LEVEL - button to correct the

trapezum distortion of the verticalline.

PCCADJUSTMENT

GREYSCALEADJUSTMENT

FOCUSADJUSTMENT

AGCADJUSTMENT

+BVOLTAGE ADJUSTMENT

CORNERADJUSTMENT

1.Tune the receiver to a cross hatch pattern.2.Enter to the service mode and select mode WIDE,

and select item no.10 WIDE10.PCNR.3.Press the LEVEL+ or LEVEL - button to correct the

distortion of the verticalline around the corners.

HORIZONTAL CENTRING ADJUSTMENT

1.Tune the receiver to a circular pattern.2.Enter to the service mode and select mode WIDE,

and select item no.2 WIDE2.PH-P.3.Press the LEVEL+ or LEVEL - button to adjust the

horizontalcentre.

HORIZONTAL WIDTHADJUSTMENT


and select item 6 WIDE6.PH-W.3.Press the LEVEL+ or LEVEL - button to adjust the

horizontalwidth.

1.Tune the receiver to a circular pattern.2.Set controls to normal.3.Connect high- voltage meter to the anode of CRT and

GND.4.Confirm that voltage is 38.01.0kVfor 21model.

Confirm that voltage is 29.01.0kVfor 25model.

Confirm that voltage is 29.01.0kVfor 28model.

VERTICAL CENTRING ADJUSTMENT


and select item no.1 WIDE 1.P V-P..3 Press the LEVEL+ or LEVEL - button to adjust the

vertical centre.

VERTICAL HEIGHT ADJUSTMENT


and select item no.5 WIDE5.PV-S.3.Press the LEVEL+ or LEVEL - button to adjust the

verticalheight.

1.Tune the receiver to a circular pattern.2.Enter to the service mode and select mode REGU-

LAR, and select item no.7 REGULAR7.HBF.3.Press the LEVEL+ or LEVEL - button to adjust the

centre of picture image to be screen centre.

1.Tune the receiver to a circular pattern.2.Enter to the service mode and select mode REGU-

LAR, and select item no.8 REGULAR8 OSD.TheOSDtest bar will appear on the top of screen.

3.Press the LEVEL+ or LEVEL - button to adjust properOSDpositioning.

OSD POSITIONING ADJUSTMENT

H-BLANK ADJUSTMENT

VERTICAL ADJUSTMENT

HIGH-VOLTAGE CONFIRMATION

HORIZONTAL ADJUSTMENT

CPUPORT FUNCTIONS

Pin No. Function Name Function IN/OUT

1 MMU0 External memory 0 OUT


3 A DDR10 Address bus 10 OUT

4 DSN Data Strobe

5 ADDR11 Address bus 11 OUT



8 R W N R ea d W ri te S tr ob e

9 GND

10 VDD Power Supply IN

11 OSC-IN Clock Input IN

12 OSC-OUT Clock Output OUT







1 9 P 3. 7/ CSO Pr ote ct - Po we r fa il ur e d et ect inp ut IN

2 0 P 3 .6 / AS N D o lb y C LK ( L/ L ) O U T

21 P 3.5 Dolby SO(Super 3D) OUT

22 P3.4 PITTARI switch OUT

23 P5.1 IICBUS SDA IN/OUT

24 P5.0 IICBUS SCL OUT

25 P 2.0 Remote Control Signal Input IN

26 P2.3 Power Relay & LEDDrive On: L OUT

27 P2.4 SUB CPU SO OUT

28 P 0.2 Key switch input IN

29 P0.1 SUB CPU CLK OUT

30 P0.0 SUB CPU SI IN

31 P4.7 THRESHOLD switch OUT

32 P4.6 JIMAKU(Caption) switch OUT

33 P4.5 On-Timer LEDDrive ON: L OUT

34 VDD IN

35 GND

36 P2.1 AV1 Scart function input IN

37 P2.2 AV2 Scart function input IN

38 P2.5 RF AGC input IN

39 P4.4 H-Blank On/Off OUT

40 P4.3 AMP Mute Mute On: H OUT

41 P4.2 Dolby RQ OUT

42 P4.1 H-Blank Phase OUT

43 P4.0 50/60Hz output 50Hz: H OUT

44 FB BLK Output for OSD(Active H) OUT

45 B Blue Output for OSD (Active H) OUT

46 G Green Output for OSD (Active H) OUT

47 R Red Output for OSD(Active H) OUT

48 V-SYNC V-Sync Input (Active H) IN

49 H-SYNC H-Sync Input (Active H) IN

5 0 W SC R V PS /W SS S li ce r L in e P LL

5 1 W SC F V PS /W SS Sl ic er Li ne PL L52 VDD-A Analogue PowerSupply IN

5 3 P XF M P ix el F re qu en cy Mu lt ip li er54 RESET Reset Input (Active L) IN

5 5 M CF M P ix el F re qu en cy Mu lt ip li er

5 6 J TR ST O

57 TXCF

5 8 C VB S0

5 9 T ES T0

6 0 C VB S1 Video signal Input IN

61 CVBS2 Video Signal Input IN

6 2 G ND -A

63 D AT3 Data bus 3 IN









72 ADDR1 Address bus 1 OUT73 ADDR2 Address bus 2 OUT






SERVICE ADJUSTMENTS

[Afterreplac ing the Memory IC(IC803)]The memory IC, IC803, storesthe service adjustments data for each circuit, therefore, when the memory ICisreplaced, it should be performed OPTIONSETTINGon previous page and the following adjustments, refer tofurther adjustment on page 14.

ADJUSTABLESERVICEADJUSTMENTREGULAR

WIDE

To enterto the Service Mode

+ Press and hold the GREENbutton on the remote controland then press the Pw button inside of the door.Theadjustment windowwillappear on the screen.

REGULARWIDEOTHERSTB1251

ADJUST

OKSELECT:EXIT:RECALL

IMPORTANTNOTICE

Do not attempt to adjust service adjustments not listed on the above otherwise it may cause

loss of performance and product safety.

I te m No . O SD D es cr ip ti on1 P V -P V er ti ca l Ce nt re Ad ju st me nt2 P H -P H or iz on ta l Ce nt re A d ju st me nt5 P V -S V er ti ca l Si ze A dj us tm en t6 P H -S H or iz on ta l Si ze Ad ju st me nt7 P PCC Pc c Adj ust ment8 P T R P T r ap ez o id D i st o rt i on A dj u st me n t1 0 P C NR C or ne r A dj us tm en t

I te m No . O SD D es cr ip ti on1 AGC AGC Adjustment2 C UT C ut -O ff D ri ve A dj us tm en t3 G RY G -D ri ve A dj us tm en t4 G RY B -D ri ve A dj us tm en t7 H BP H -B la nk in g P ha se Ad ju st me nt8 O SD O SD Po si ti on in g A dj us tm en t

Note:Some items of the service adjustments for this chassis are controlled by the CPU, IC801, and theadjustmentsare carried out by using the RChandset.

To select the mode and service item and change data value

+ Highlight the desired adjustment mode by using the Pv or Pw button and then press the F/OK button.+ To select the adjustment item, use the Pv or Pw button.

+ To change the service data, use the Volume -(LEFT) or Volume + (RIGHT) button.+ The data which is set in the service mode isstored into the memory ICautomatically.

Exit from the Service Mode

+ Pressthe RECALLbutton or turn off the TV set by using the Mains switch.

INITIALISATIONOF MEMORYIC

To initialise the memory IC(IC803), press and hold the NORMAL button on te remote controland then press the Pv

button on the front panelof the TV set, and then turn the Mains switch Off and On.Nowthe initialisation iscompleted.When initialised the memory IC, allof the setting data (option data and service adjustment data) stored in the ICarereset to the default value.So it is necessary to set the option settings and readjust the service adjustments listed onleft page.

REGULAR1, AGC 38

AdjustmentNo.andItemname

AdjustmentData

WIDE1. PV- P 1 F

AdjustmentNo.andItemname

AdjustmentData

REGULARmode WIDEmode

Q613

Q461

T451

TP-B

T611

T681

Q432

K1002

IC501H3

IC501

IC501H2

VR641

KX

KJ

K1001

KM

IC201

KMB

KMA

IC802 IC

001

T131

TP-A

A101

UNDERSIDEOFBOARDIC801

MAIN BOARD

IC1201AV-SELECTOR

1(V)

2(L)

4(R)

13(V)14(L)

16(R)

7(V)

8(L)

9(Y)

10(R)11(C)

41(V)

(V)34

31

29

33

32

37

38

MONITOR-OUT

Q1202

Q1203

Y-IN

C-IN

FRONT AV3

MONITOR-OUT

SC-1

(VIDEO/AUDIO-L/R)

SC-2

(VIDEO/Y/C/AUDIO-L/R)

SC-1

SC-2

K12J

FRONT-AV

K12H

L-OUT

R-OUT

IC3451NICAM

&STEREO

37

36

12

6061

45

C-OUT

Y-OUT

SIF-IN

AUDI O L/ R- OUT A UDIO -O UT

IC201IF/VIDEO/CHROMA

IC001

AUDIO-OUT

SDA/SCL

(VIDEO)

Y-OUT

C-OUT Q1205

Q1204/1207

I2CBUS

BLOCK DIAGRAM (AV SELECTOR/ NICAM DECODER)

FIG. 2

IC801

CPUIC803MEMORYSCL

SDA

IC802ROM

IC201

IF/VIDEO/CHROMA/

DEF

Q242

Q243

Q244

IC701

VIDEO-OUT

CRT

R

G

B

R

G

B

Q121~Q133

TV-OUT

SIF-IN

C-OUT

Y-OUT

13

8

15

18

AV1

AV2

TV-INSC-1

SC-2

MONTO-OUT

X132

X131

VIF

SIF

6

7

9

34

35

15

16

17

18

26

T451

FBT

V

H

D.YPCC

CONTROL

CS

CONTROL

Q432

Q431

H-OUT

EW-OUT

43

39

40

41

32

3

54

22

21

20

V-OUT IC50136

C

Y

SYNC-IN

BLK

R

G

B

I2CBUS

BLK

B

G

R

CVBS-IN6160

47

46

45

44

25 2 6

24

23

19 1 - 1580 - 63

T431

PROTECT-IN

PC-IN POWER

Q141

A101

TUNER

Aerial

FOCUS

SCREEN

Refer alsoto FIG.-2.AVSELECTORNICAM DECODER

BLOCK DIAGRAM (OUTLINE)

IC801CPU

2 5 2 6 28 4 0

24

23

19

6160

47

46

45

44

1 - 7, 63 - 80

P

OWER

KEY-IN

RC-IN

MUTE

BLK-OUT

B-OUT

G-OUT

R-OUT

Q806CVBSPOWER-FAIL

DETECT

SCL

SDA

IC803

MEMORY

I2CBUS

CONTROL

IC802ROM

BLOCK DIAGRAM (SYSTEM CONTROL)

FIG. 3

FRONT BOARD

K19FF K19KK

F691

K19E

SW1951 SW1952 SW1953 SW1954

K19F

IC1304

IC1301

K19G

IC1303

K1101

K19RR

K041

SW691

K19N K19LLK19O

K19HK19A

PS691

L691

C692C691

UNDERSIDEOFBOARD

A1901A

D1901

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