Samsung S56a_aadj-7 Datasheet

Alignment and Adjustments

Samsung Electronics 4-1

4. Alignment and Adjustments

4-1 General Alignment Instructions

1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync and focus.

2. Observe the picture for good black and white details. There should be objectionable color shading; if color shading is present, demagnetize, perform purity and convergence adjustments described below.

3. Use the specified test equipment or its equivalent.

4. Correct impedance matching is essential.

5. Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test results.

6. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate.

7. Do not attempt to connect or disconnect any wires while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts.

8. To protect against shock hazard, use an isolation transformer.

4-2 Automatic Degaussing

A degaussing coil is mounted around the picture tube, so that external degaussing after moving the TV should be unnecessary. But the receiver must be properly degaussed upon installation.

The degaussing coil operates for about 1 second after the power is switched ON. If the set is moved or turned in a different direction, the power should be OFF for at least 10 minutes.

If the chassis or parts of the cabinet become magnetized, poor color purity will result. If this happens, use an external degaussing coil. Slowly move the degaussing coil around the faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw the coil to a distance of about 6 feet before turning power OFF.

If color shading persists, perform the following Color purity and Convergence adjustments.

4-3 High Voltage Check

CAUTION : There is no high voltage adjustment on this chassis. The B+ power supply should be +135 volts (with full color- bar input and normal picture level).

1. Connect a digital voltmeter to the second anode of the picture tube.

2. Turn on the TV. Set the Brightness and Contrast controls to minimum (zero beam current).

3. Adjust the Brightness and contrast controls to both extremes. Ensure that the high voltage does not exceed 30 KV under any conditions.

Alignment and Adjustments

4-2 Samsung Electronics

4-4 FOCUS Adjustment

1. Iput a black and white signal.

2. Adjust the tuning control for the clearest picture.

3. Adjust the FOCUS control for well defined scanning lines in the center area of the screen.

4-5 Factory Adjustment

1. To enter the “Service Mode”, Press the remote-control keys in this sequence :

- If you do not have Factory remote-control

- If you have Factory remote-control

4-5-1 Service Mode

4-5-2 Factoy Mode OSD

ADJUST

OPTION 52 2A 48 G2-ADJUST RESET SPM-836EAN 2002/02/08

AGC

SCT

SBT

BLR

BLB

RG

GG

BG

VSL

VS

VA

HS

SC

CDL

33

13

9

31

27

32

25

31

19

38

40

30

24

9

STT

AKB

PDL

NDL

PSR

NSR

VOL

LCO

TXP

MVOL

FMWS

AGCS1

OMD

SCL

7

0

15

10

15

10

0

9

10

0

1

26

1

PWL

AGN

PEK

ACL

FCO

SCBT

SSP

PSNS

HPAR

HBOW

EWID

EPAR

EUCN

ELCN

12

1

2

0

45

20

1

32

ETRP

VZ

SVM

VMA

DPSR

DNSR

DSBT

DCDL

DBLR

DBLB

32

58

0

15

10

7

9

31

27

4-5-2(A) ADJUST

PICTURE OFF PICTURE ON

PICTURE ON

DISPLAY

()

MENU

FACTORY

MUTE

Alignment and Adjustments

Samsung Electronics 4-3

OSD

AGC

SCT

SBT

BLR

BLB

RG

GG

BG

VSL

VS

VA

HS

SC

CDL

STT

AKB

PDL

NDL

PSR

NSR

VOL

LCO

TXP

MVOL

FMWS

AGCS1

OMD

SCL

PWL

AGN

PEK

ACL

FCO

SCBT

SSP

Range

0 ~ 63

0 ~ 23

0 ~ 63

0 ~ 15

0 ~ 7

0 ~ 1

0 ~ 15

0 ~ 23

0 ~ 63

0 ~ 1

0 ~ 15

0 ~ 50

0 ~ 1

0 ~ 3

0 ~ 63

0 ~ 3

0 ~ 15

0 ~ 1

0 ~ 3

0 ~ 1

0 ~ 63

0 ~ 23

Register

1Eh(D5-D0)

1Dh

1Bh

14h(D5-D0)

15h(D5-D0)

16h(D5-D0)

17h(D5-D0)

18h(D5-D0)

0Fh(D5-D0)

12h(D5-D0)

10h(D5-D0)

09h(D5-D0)

0Fh(D5-D0)

2Ah(D3-D0)

08h

2Ah(D4)

1Ah(D3-D0)

1Ch

1Fh

27h(D7-D5)

87F2h(D5-D0)

Oh(D15-D0)

29h(D5)

28h(D2-D1)

05h(D5-D0)

04h(D5-D4)

04h(D3-D0)

29h(D7)

19h(D7-D6)

20h(D1)

21h(D0)

1Bh

19h(D5-D0)

Initial Value

33

13

9

31

27

32

25

31

19

38

40

30

24

9

7

0

15

10

15

10

0

9

10

0

1

26

1

12

1

2

0

45

20

Remark

RF AGC

Sub contrast(high light adjustment)

Sub brightness(low light adjustment)

Black level offset R(low light R adjustment)

Black level offset B(low light B adjustment)

White point R(high light R adjustment)

White point G(high light 25 fixed)

White point B(high light B adjustment)

Vertical slope

Vertical shift

Vertical amplitude

Horizontal shift

S-correction

Cathode drive level

Sub tint(NTSC only)

Black current stabilization

PAL Y-delay adjustment

NTSC Y-delay adjustment

PAL sub color gain adjustment

NTSC sub color gain adjustment

Initial vol adjustment

PLL demodulator frequency adjust( 0 : set )

TTX horizontal shift adjustment(Micom Memory Part)

Melody initial vol adjustment(MSP34XX)

Narrow-band sound PLL window selection

IF AGC speed

Off-set IF demodulator

Soft clipping level

Peak white limiting

FM demodulator gain

Peaking center frequency

Automatic color limiting

Forced color limiting

Screen brightness(different from INCH)

Sub Sharpness gain adjustment

Alignment and Adjustments

4-4 Samsung Electronics

OSD

PSNS

HPAR

HBOW

EWID

EPAR

EUCN

ELCN

ETRP

VZ

SVM

VMA

DPSR

DNSR

DSBT

DCDL

DBLR

DBLB

Range

0 ~ 1

0 ~ 63

0 ~ 3

0 ~ 23

0 ~ 15

0 ~ 63

Register

21h(D2)

06h(D5-D0)

07(D5-D0)

0Ah(D5-D0)

0Bh(D5-D0)

0Ch(D5-D0)

0Dh(D5-D0)

0Eh(D5-D0)

13h(D5-D0)

2Dh(D5-D0)

2Eh(D5-D0)

1Ch

1Bh

2Ah(D3-D5)

14h(D5-D0)

15h(D15-D0)

Initial Value

1

32

0

15

10

7

9

31

27

Remark

Ident sensitivity PAL/NTSC decoder

Horizontal parallelogram

Horizontal bow

EW width

EW parabola

EW upper corner parabola

EW lower corner parabola

EW tarpezium

Vertical zoom

Delay of RGB output to VM output

Ampulitude of SVM out

DVD PAL sub color gain adjustment

DVD NTSC sub color gain adjustment

DVD Sub brightness(low light adjustment)

DVD Cathode drive level

DVD Black level offset R(low light R adjustment)

DVD Black level offset B(low light B adjustment)

Alignment and Adjustments

Samsung Electronics 4-5

ADJUST

OPTION 52 2A 48

G2-ADJUST RESET SPM-836EAN 2002/02/08

Item

LNA

SYSTEM

AUDIO

JACK

ZOOM

AUTO POWER

EW

2nd SIF

HOTEL MODE

BKS

HIGH DEVIA

HELP MENU

LANGUAGE

V-GUARD

No

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Initial value

OFF

CS

MONO

RCA

NOR/ZOOM/16:9

ON

OFF

ON

OFF

ON

EAST ASIA

OFF

Remark

CIS : ON

CS - CB -CD

MONO - MONO/BILI - L-STEREO -

L-STEREO/BILI - STEREO - NICAM

RCA - SCART - RCA+DVD

NOR/ZOOM/16:9 - NOR/ZOOM

ON(MUST OFF)

ON - OFF(21”F PIN FREE CRT OFF)

ON - OFF(QUEST OFF)

OFF - ON(OPTION)

ON - OFF(EUROPE OFF)

OFF(MUST OFF)

ON - OFF(EUROPE OFF)

EAST ASIA - CHINA

OFF(MUST OFF)

4-5-2(B) OPTION

ADJUST OPTION 52 2A 48

G2-ADJUST

RESET SPM-836EAN 2002/02/08

4-5-2(C) G2-ADJUST

☞ Entering G2-Adjust Mode Screen Adjust : Displyed As “NG”.

→ Turn SCREEN VR OF FBT, Adjust Value Become To Be “OK”.

Screen Adjust : N.G

Screen Adjust : O.K

Screen Adjust : N.G

Alignment and Adjustments

4-6 Samsung Electronics

4-5-2(D) SCREEN CHANGE (I2C BUS GEOMETRIC ADJUSTMENT)

1 V Shift

V Slope

2

3 H EW

6 V Amp

V SC

7

8

H Trapizium

4 H Parabola

5 H Corner

9

10

H Shift

H Symmetry

Alignment and Adjustments

Samsung Electronics 4-7

PIN NO

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

SYMBOL

P1.3/T1

P1.6/SCL

P1.7/SDA

P2.0/TPMW

P3.0/ADC0

P3.1/ADC1

P3.2/ADC2

P3.3/ADC3

VSSC/P

P0.5

P0.6

VSSA

SECPLL

VP2

DECDIG

PH2LF

PH1LF

GND3

DECBG

EWD

VDRB

VDRA

IFIN1

IFIN2

IREF

VSC

AGCOUT

SIFIN1/DVBIN1

SIFIN2/DVBIN2

GND2

SIFAGC/DVBAGCR

REFO/AMOUT/REFIN

PIN FUNCTION

port 1.3 or Counter/Timer 1 input

port 1.6 or IIC-bus clock line

port 1.7 or IIC-bus data line

port 2.0 or Tuning PWM output

port 3.0 or ADC0 input

port 3.1 or ADC1 input

port 3.2 or ADC2 input

port 3.3 or ADC3 input

digital ground for m-Controller core and periphery

port 0.5(8mA current sinking capability for direct drive of LEDs)

port 0.6(8mA current sinking capability for direct drive of LEDs)

digital ground of TV-processor

SECAM PLL decoupling

2nd supply voltage TV-processor(+8V)

supply voltage decoupling of digital circuit of TV-processor

phase-2 filter

phase-1 filter

ground 3 for TV-processor

bandgap decoupling

East-West drive output

vertical drive B output

vertical drive A output

IF input 1

IF input 2

reference current input

vertical sawtooth capacitor

tuner AGC output

SIF input 1 / DVB input 1

SIF input 2 / DVB input 2

ground 2 for TV processor

narrow band PLL filter

Automatic Volume Leveling/subcarr reference output/sound IF input/external reference signal input for I signal mixer for DVB operation

4-6

PIN ASSIGNMENT SPECIFICATION

CHECK VOLTAGE

S-By P-On

Alignment and Adjustments

4-8 Samsung Electronics

PIN NO

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

SYMBOL

HOUT

FBISO

QSSO/AMOUT

EHTO

PLLIF

IFVO/SVO/DVBO

VP1

CVBS1

GND

CVBS/Y

C

SVM

INSSW2

R2/VIN

G2/YIN

B2/UIN

BCLIN

BLKIN

RO

GO

BO

VDDA

VPE

VDDC

OSCGND

XTLIN

XTLOUT

RESET

VDDP

P1.0/INT1

P1.1/T0

P1.2/INTO

PIN FUNCTION

horizontal output

flyback input/sandcastle output

QSS intercarrier output/AM output in stereo applications or deemphasis(front-end audio out)/AM output in mono applications

EHT/overvoltage protection input

IF-PLL loop filter

AGC sound IF/inter-external AGC for DVB applications

main supply voltage TV processor

internal CVBS input

ground for TV processor

CVBS3/Y input

chroma input

scan velocity modulation output

2nd RGB/YUV insertion input

2nd R input/V(R-Y) input PR input

2nd G input/Y input

2nd B input/U(B-Y) input PB input

beam current limiter input

black current input/V-guard input

Red output

Green output

Blue output

analog supply of Teletext decoder and digital supply of TVprocessor(3.3 V)

OTP Progamming Voltage

digital supply to core(3.3 V)

oscillator ground supply

crystal oscillator input

crystal oscillator output

reset

digital supply to peryipher(+3.3 V)

port 1.0 or external interrupt 1 input

port 1.1 or Counter/Timer 0 input

port 1.2 or external interrupt 0 input

CHECK VOLTAGE

S-By P-On