4 Alignment and Adjustments

4-2 Display Control Adjustments

4-2-1 HIGH VOLTAGE ADJUSTMENT

Signal:

1024 x 768 (68 kHz/85 Hz) (17Ó)

 

800 x 600 (54 kHz/85 Hz) (15Ó)

Display image: DonÕt care

Contrast:

Minimum

Brightness:

Minimum

Limit:

26.5 kV ± 0.2 kV (17Ó)

 

25 kV ± 0.2 kV (15Ó)

exception) 26.0 kV ± 0.2 kV for 17Ó SDD CRT that the DY type is DMX-1791AT

Measure the hight voltage level at the anode cap. High voltage should be within the limit as above. If the high voltage needs adjustment use the following procedure.

PROCEDURE

1.Turn the power off and disconnect the AC line cord from the power source.

2.Turn the power on after connecting high voltage Probe.

3.Using the jig, adjust the high voltage to the specification.

* High Voltage Adjustment PROCEDURE using Softjig

Select matching model name in ÒModelÓ field.

Select Ò @7: Zero BeamÓ in menu after selecting ÒExtra 1Ó

Adjust high voltage using control bar after selecting ÒHV MINÓ

Turn the power off/on after adjustment finished.

Check the high voltage has been fixed with adjusted value after reselecting Ò@7: Zero BeamÓ.

4-2-2 SCREEN VOLTAGE ADJUSTMENT

CONDITIONS

 

Signal:

1024 x 768 (68 kHz/85 Hz) (17Ó)

 

800 x 600 (54 kHz/85 Hz) (15Ó)

Display image: DonÕt care

Contrast:

Minimum

Brightness:

Minimum

Limit:

26.5 kV ± 0.2 kV (17Ó)

 

25 kV ± 0.2 kV (15Ó)

Screen Voltage adjustment procedure using softjig is all the same as 4-2-1 but selecting ÒG2 CONTÓ on the contrary to ÒHV MINÓ.

Table 4-1

 

 

CRT type

Screen Voltage

 

 

 

 

 

 

M41QAR361X11*(*)

480V ± 10V

 

 

M41QAQ261X11*(*)

17”

M41LFQ903X28(L), etc

 

M41EHN325X160/3F**U

500V ± 10V

 

 

 

 

M41EHN323X160/3F**U

 

 

 

M41LLJ507XX43*(F5), (F5W3)

630V ± 10V

 

 

M41LLH507XX43*(F5)

 

 

 

M36QAM351X11*(*)

560V ± 10V

15”

M36LGE128X2**(*)

600V ± 10V

 

 

M36KUK35X02(*/LP), etc

520V ± 10V

4-2-3 CENTER RASTER

Adjust SW401 so that the back raster comes to the center when you apply each basic mode for 15Ó and 17Ó.

4-2-4 Centering

Centering means to position the center point of the display in the middle of the display area. Horizontal size and position and vertical size and position control the centering of the display.

Adjust the horizontal size and vertical size to their optimal settings: 306 mm (H) x 230 mm (V) for 17Ó, 267 mm (H) x 200 mm (V) for 15Ó.

Adjust the horizontal position and vertical position to ² 4.0 mm of the center point of the screen.

A-B ² 4.0 mm.

C-D ² 4.0 mm.

 

C

 

DISPLAY AREA

A

B

 

EDGE OF BEZEL

 

D

Figure 4-3. Centering

*In Softjig window, ÒGeometryÓ has to be selected for GD adjustment.

4-2-4 (a) HORIZONTAL SIZE ADJUSTMENT

CONDITIONS

Scanning frequency: 68 kHz/85 Hz (17Ó) 54 kHz/85 Hz (15Ó)

Display image: Crosshatch pattern

Brightness:Maximum

Contrast:Maximum

DP15H*/DP17L*

4-3

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Image 11
Samsung DP17LS/LT, DP15HS/HT manual Display Control Adjustments, Centering

DP15HS/HT, DP17LS/LT specifications

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