Acer RB23WABAS service manual Content

4

ACER H233H

1. Product Specification (continued)

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1.3.3User Controls and Indicators

1.3.3.1Power On / Off Switch

The monitor shall have a power control switch visible and accessible on the front of the monitor . The switch shall be marked with icons per IEC 417 , # 5007 and # 5009.The switch shall interrupt the DC supply to the monitor.

1.3.3.2Power Indicator LED

The monitor shall make use of an LED type indicator located on the front of the monitor . The LED color shall indicate the power states as given in Table 1.

1.3.3.3On-Screen Display

The Wistron On Screen Display system shall be used, controlled by a Menu button. If the buttons remain untouched for OSD turn off time while displaying a menu, the firmware shall save the current adjustments and exit. Also, if the video controller changes video mode while the OSD is active, the current settings shall be save immediately, the OSD turn off, and new video mode is displayed.

Key	When No OSD display	OSD Display
MENU	Menu Display	1.To select the OSD sub-Menu
		2.Enter select
	Speaker Volume/Plus	1.Right or Down selection of the OSD menu
>	(with Audio)	2.Increase the value after bar selected
	Speaker Volume/Minus	1.Left or up selection of the OSD menu
<	(with Audio)	2. Decrease the value after bar selected
Auto	Auto Adjust Function	Menu exit
e	Trigger eColor Management	Trigger eColor Management
Input	Input source select	Input source select

ITEM	Content
Volume	To increase or decrease the sound level
Brightness	Adjust backlight luminance of the LCD panel
Contrast	Adjust gain of R,G,B signal
Clock	Adjust the ratio of dividing frequency of the dot clock
Focus	Adjust the phase of the dot clock
H.Position	The active screen is horizontally move right and left
V.Position	The active screen is vertically move up and down
Color temp	Select three kinds of modes(Warm, Cool, User)
OSD Language	1.USA-select the language among English, French, Italian, Deutsch, Spanish,	,
	,
	2.EMEA-select the language among English, French,Italian, Deutsch, Spanish, Russian,
	Dutch, Finnish
OSD Position	Adjust the OSD menu position
OSD Timeout	The OSD menu show time
Setting	The setting of Input Source, Wide Mode, DDC/CI
Information	It will show resolution, the frequency of horizontal/vertical synchronizing and S/N
Reset	All data copy from shipment factory data

1.3.4Monitor Modes and Timing Capability

1.3.4.1Format and Timing

The monitor shall synchronize with any vertical frequency from 50 to 75 Hz , and with any horizontal frequency from 31 to 94KHz. If the input frequency is out of the above – specified range, the monitor shall display a warning screen indicating that the input frequency is out of range. Under no circumstances shall any combination of input signals cause any damage to the monitor .

1.3.4.2Factory Assigned Display Modes

There are 13 factory pre-set frequency video modes. These modes have a factory pre-set for all characteristics affecting front-of-screen performance. When the system is powered on, previously stored screen parameters for a pre-defined mode will be recalled if the operating mode is one of those stored in memory. If the operating mode is not one of those stored in memory, the monitor CPU will select the PRESET timing for a mode that is the next lowest in horizontal scanning frequency to the mode being currently used. The screen parameters may be adjusted by the use of the front bezel controls and then may be saved as a user defined mode. The monitor shall include all the preset video timings shown in the following page.( Please see Note. (3) )

1.3.4.3Mode Recognition Pull-in

The monitor shall recognize preset modes

within a range of 1KHz whichever is less for horizontal ; and within 1Hz for vertical.

1.3.4.4User Display Modes

In addition to the factory pre-set video modes, provisions shall be made to store up to 9 user modes. If the current mode is a user mode, the monitor shall select its previously stored settings. If the user alters a setting, the new setting will be stored in the same user mode. The user modes are not affected by the pre-set command. If the input signal requires a new user mode, storage of the new format is automatically performed during user adjustment of the display (if required).( Please see Note.(4) )