Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung TV S56a_aadj-7
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Alignment and Adjustments
4. Alignment and Adjustments
4-1 General Alignment Instructions
1. Usually, a color TV-VCR needs only slight 5. Avoid overload. Excessive signal from a
touch-up adjustment upon installation. Check sweep generator might overload the front-end
the basic characteristics such as height, of the TV. When inserting signal markers, do
horizontal and vertical sync and focus. not allow the marker generator to distort test
results.
2. Observe the picture for good black and white
details. There should be objectionable color 6. Connect the TV only to an AC power source
shading; if color shading is present, with voltage and frequency as specified on the
demagnetize, perform purity and convergence backcover nameplate.
adjustments described below.
7. Do not attempt to connect or disconnect any
3. Use the specified test equipment or its wires while the TV is turned on. Make sure
equivalent. that the power cord is disconnected before
replacing any parts.
4. Correct impedance matching is essential.
8. To protect against shock hazard, use an
isolation transformer.
4-2 Automatic Degaussing
A degaussing coil is mounted around the If the chassis or parts of the cabinet become
picture tube, so that external degaussing after magnetized, poor color purity will result. If
moving the TV should be unnecessary. But this happens, use an external degaussing coil.
the receiver must be properly degaussed upon Slowly move the degaussing coil around the
installation. faceplate of the picture tube and the sides and
front of the receiver. Slowly withdraw the coil
The degaussing coil operates for about 1 to a distance of about 6 feet before turning
second after the power is switched ON. If the power OFF.
set is moved or turned in a different direction,
the power should be OFF for at least 10 If color shading persists, perform the
minutes. 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.
Samsung Electronics 4-1
Alignment and Adjustments
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
4-5-1 Service Mode
1. To enter the "Service Mode", Press the remote-control keys in this sequence :
- If you do not have Factory remote-control
PICTURE OFF DISPLAY ( ) MENU MUTE PICTURE ON
- If you have Factory remote-control
PICTURE ON DISPLAY ( ) FACTORY
4-5-2 Factoy Mode OSD
4-5-2(A) ADJUST
AGC 33 STT 7 PWL 12 ETRP 32
ADJUST SCT 13 AKB 0 AGN 1 VZ 58
OPTION 52 2A 48 SBT 9 PDL 15 PEK 2 SVM 0
G2-ADJUST BLR 31 NDL 10 ACL 0 VMA 0
RESET BLB 27 PSR 15 FCO 0 DPSR 15
SPM-836EAN 2002/02/08 RG 32 NSR 10 SCBT 45 DNSR 10
GG 25 VOL 10 SSP 20 DSBT 7
BG 31 LCO 0 PSNS 1 DCDL 9
VSL 19 TXP 9 HPAR 32 DBLR 31
VS 38 MVOL 10 HBOW 32 DBLB 27
VA 40 FMWS 0 EWID 32
HS 30 AGCS1 1 EPAR 32
SC 24 OMD 26 EUCN 32
CDL 9 SCL 1 ELCN 32
4-2 Samsung Electronics
Alignment and Adjustments
OSD Range Register Initial Value Remark
AGC 0 ~ 63 1Eh(D5-D0) 33 RF AGC
SCT 0 ~ 23 1Dh 13 Sub contrast(high light adjustment)
SBT 0 ~ 23 1Bh 9 Sub brightness(low light adjustment)
BLR 0 ~ 63 14h(D5-D0) 31 Black level offset R(low light R adjustment)
BLB 0 ~ 63 15h(D5-D0) 27 Black level offset B(low light B adjustment)
RG 0 ~ 63 16h(D5-D0) 32 White point R(high light R adjustment)
GG 0 ~ 63 17h(D5-D0) 25 White point G(high light 25 fixed)
BG 0 ~ 63 18h(D5-D0) 31 White point B(high light B adjustment)
VSL 0 ~ 63 0Fh(D5-D0) 19 Vertical slope
VS 0 ~ 63 12h(D5-D0) 38 Vertical shift
VA 0 ~ 63 10h(D5-D0) 40 Vertical amplitude
HS 0 ~ 63 09h(D5-D0) 30 Horizontal shift
SC 0 ~ 63 0Fh(D5-D0) 24 S-correction
CDL 0 ~ 15 2Ah(D3-D0) 9 Cathode drive level
STT 0~ 7 08h 7 Sub tint(NTSC only)
AKB 0~ 1 2Ah(D4) 0 Black current stabilization
PDL 0 ~ 15 1Ah(D3-D0) 15 PAL Y-delay adjustment
NDL 0 ~ 15 1Ah(D3-D0) 10 NTSC Y-delay adjustment
PSR 0 ~ 23 1Ch 15 PAL sub color gain adjustment
NSR 0 ~ 23 1Ch 10 NTSC sub color gain adjustment
VOL 0 ~ 63 1Fh 10 Initial vol adjustment
LCO 0~ 1 27h(D7-D5) 0 PLL demodulator frequency adjust( 0 : set )
TXP 0 ~ 15 87F2h(D5-D0) 9 TTX horizontal shift adjustment(Micom Memory Part)
MVOL 0 ~ 50 Oh(D15-D0) 10 Melody initial vol adjustment(MSP34XX)
FMWS 0~ 1 29h(D5) 0 Narrow-band sound PLL window selection
AGCS1 0~ 3 28h(D2-D1) 1 IF AGC speed
OMD 0 ~ 63 05h(D5-D0) 26 Off-set IF demodulator
SCL 0~ 3 04h(D5-D4) 1 Soft clipping level
PWL 0 ~ 15 04h(D3-D0) 12 Peak white limiting
AGN 0~ 1 29h(D7) 1 FM demodulator gain
PEK 0~ 3 19h(D7-D6) 2 Peaking center frequency
ACL 0~ 1 20h(D1) 0 Automatic color limiting
FCO 0~ 1 21h(D0) 0 Forced color limiting
SCBT 0 ~ 63 1Bh 45 Screen brightness(different from INCH)
SSP 0 ~ 23 19h(D5-D0) 20 Sub Sharpness gain adjustment
Samsung Electronics 4-3
Alignment and Adjustments
OSD Range Register Initial Value Remark
PSNS 0~ 1 21h(D2) 1 Ident sensitivity PAL/NTSC decoder
HPAR 0 ~ 63 06h(D5-D0) 32 Horizontal parallelogram
HBOW 0 ~ 63 07(D5-D0) 32 Horizontal bow
EWID 0 ~ 63 0Ah(D5-D0) 32 EW width
EPAR 0 ~ 63 0Bh(D5-D0) 32 EW parabola
EUCN 0 ~ 63 0Ch(D5-D0) 32 EW upper corner parabola
ELCN 0 ~ 63 0Dh(D5-D0) 32 EW lower corner parabola
ETRP 0 ~ 63 0Eh(D5-D0) 32 EW tarpezium
VZ 0 ~ 63 13h(D5-D0) 32 Vertical zoom
SVM 0~ 3 2Dh(D5-D0) 0 Delay of RGB output to VM output
VMA 0~ 3 2Eh(D5-D0) 0 Ampulitude of SVM out
DPSR 0 ~ 23 1Ch 15 DVD PAL sub color gain adjustment
DNSR 0 ~ 23 1Ch 10 DVD NTSC sub color gain adjustment
DSBT 0 ~ 23 1Bh 7 DVD Sub brightness(low light adjustment)
DCDL 0 ~ 15 2Ah(D3-D5) 9 DVD Cathode drive level
DBLR 0 ~ 63 14h(D5-D0) 31 DVD Black level offset R(low light R adjustment)
DBLB 0 ~ 63 15h(D15-D0) 27 DVD Black level offset B(low light B adjustment)
4-4 Samsung Electronics
Alignment and Adjustments
4-5-2(B) OPTION
No Item Initial value Remark
ADJUST 1 LNA OFF CIS : ON
OPTION 52 2A 48 2 SYSTEM CS CS - CB -CD
G2-ADJUST MONO - MONO/BILI - L-STEREO -
3 AUDIO MONO
RESET L-STEREO/BILI - STEREO - NICAM
SPM-836EAN 2002/02/08 4 JACK RCA RCA - SCART - RCA+DVD
5 ZOOM NOR/ZOOM/16:9 NOR/ZOOM/16:9 - NOR/ZOOM
6 AUTO POWER ON ON(MUST OFF)
7 EW ON ON - OFF(21"F PIN FREE CRT OFF)
8 2nd SIF ON ON - OFF(QUEST OFF)
9 HOTEL MODE OFF OFF - ON(OPTION)
10 BKS ON ON - OFF(EUROPE OFF)
11 HIGH DEVIA OFF OFF(MUST OFF)
12 HELP MENU ON ON - OFF(EUROPE OFF)
13 LANGUAGE EAST ASIA EAST ASIA - CHINA
14 V-GUARD OFF OFF(MUST OFF)
4-5-2(C) G2-ADJUST
Entering G2-Adjust Mode Screen Adjust : Displyed As "NG".
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