Acer 41AS551V AC511 Manuale di servizio - Pagina 7

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4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS

Approximately 30 minutes should be allowed for warm up before proceeding.

Adjustments should be undertaken only on those necessary elements since most of them have been

carefully preset at the factory.

4-2 MAIN ADJUSTMENTS

NO.

FUNCTION

15.0V ADJ

B + ADJ

SCREEN ADJ

FOCUS ADJ

ABL ADJ

SUB-BRIGHTNESS ADJ

FUNCTION ADJ

4-3 ADJUSTMENT METHOD

1. 15.0V, B + & HV voltage adjustment:

A. Chroma-2000 Signal generator or PC equivalent set mode2:, VGA 640X480 pattern 1.0 .

B. Connect a DC Volt meter between TP901 and ground, then adjust VR901 to be 15.0VDC.

C. Connect a DC Volt meter between TP902 and ground, then adjust VR902 to be 87 VDC.

2. Factory preset Timings Adjustment:

A. Press Encoder control Key to show OSD window then press again to switch the functional controls.

B. Select to the "ZOOM" function, then press the button While do not release until the OSD window

changed to the Factory preset window.

C. The Factory preset window contains the following functional controls. Select one of the control to adjust

its value for the optimum picture.

All manuals and user guides at all-guides.com

4. ADJUSTMENT

-MENU

-UP

-DOWN

-EXIT

FACTORY PRESET

H:31.6 kHz

9300 6500

080

LOCATION

PCB - MAIN

FLY BACK TRANS

PCB - MAIN

V: 60Hz

DESIGNATION

VR901

VR902

T402

VR701

VR702

SW103

SW104

SW103

SW104