Samsung SP43J6HDR Alignments and Adjustments E.07

Alignment and Adjustments

Samsung Electronics 5-1

5. Alignment and Adjustments

5-1 Lens and Mirror Cleaning

1. Mix the alcohol and ethyl in appropriate proportions.

2. Use a clean cotton cloth or a cleaning paper.

3. Clean the top of the lens by turning it as shown. The pattern starts at the
center and proceeds outward, as shown below:

4. Use minimal pressure when rubbing the mirror. Otherwise, the surface
will be damaged.

5-2 Focus Adjustment for projection Lens

1. Loosen the 4 screws that secure the optical
assembly.

2. After setting the optical assembly on the front
cabinet, secure the unit temporarily using the two
screws.

3. After applying the liquid crystal panel signal,
input a lion head pattern from a pattern
generator.

4. Move the focus adjustment screws right and left
until the liquid crystal picture element
is clearly displayed on the screen.

5. Reposition the optical assembly, and fasten all 4
screws.

6. Check the focus adjustment.

7. Repeat adjustments 1~5, if necessary.

FOCUS SECURING SCREW

FOCUS
ADJUSTMENT
SCREW

FOCUS SECURING SCREW

Fig. 5-1

Alignment and Adjustments

5-2 Samsung Electronics

After replacing with the new liquid crystal panel, make sure that the liquid crystal screen center is
aligned with the screen center. If they are not aligned, make the following adjustments:

1. Using a hexagonal wrench, loosen the two screws that secure the liquid crystal panel.

Note: Loosen the screws just until the panel can move easily.

2. Using two fingers, lift the liquid crystal upward. (The screen moves downward.)

3. When moving the liquid crystal panel towards the left, the screen moves right (and vice versa).

5. Repeat adjustments 2~4 until the screen center is aligned vertically and horizontally.

6. Using a hexagonal wrench, refasten the two screws.

5-3 Liquid Crystal Screen Center Adjustment

Fig. 5-2

Alignment and Adjustments

Samsung Electronics 5-3

5-4 Side Panel Controls

5-4-1 Rear Panel Jacks

5-4-2 Side input jack

ACCESS TO MENU

PROGRAMME SELECTION

VOLUME ADJUSTMENT

LED INDICATORS

POWER

Alignment and Adjustments

5-4 Samsung Electronics

5-5 Service Mode Adjustments

5-5-1 MATRIX IC (TDA4780) Adjustment

No. Item Range Initial value Description

00
01
02
03
04
05
06
07
08
09
10
11
12

RED DRIVE
GREEN DRIVE
BLUE DRIVE
RED CUTOFF
GREEN CUTOFF
BLUE CUTOFF
SUB BRIGHTNESS
SUB CONTRAST
SUB COLOR
PEAK DRIVE LIMIT
P.YC DELAY
SUB TINT
γ CORRECTION

63
63
63
63
63
63
20
20
20
63
15
17
63

19
14
23
32
32
32
11
20
00
53
10
09
00

Adjustment for the R gain
Adjustment for the G gain
Adjustment for the B gain
Adjustment for the R cutoff
Adjustment for the G cutoff
Adjustment for the B cutoff
Adjustment for the brightness
Adjustment for the contrast
Adjusts the color difference signal level of YUVIN 1
Adjustment for the peak drive limit
Adjustment for the P.YC delay
Adjusts the center of tint (0 →R 9 →CENTER 17 →G )
Adjustment for the γ correction