Acer RA19WAANU service manual User Controls and Indicators Power On / Off Switch, OSD adjustment

4 ACER X193HQ

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1. Product Specification (continued)

1.3.2.5 Sync Signal Loading

TTL input loading shall be equivalent to one TTL input load. When logic 0 is asserted by a sync input , the maximum current source from any single monitor sync input to the driver is 1.6 mA

.When logic 1 is asserted , the maximum current source from the driver to any single monitor sync input is 400 uA .

1.3.2.6 Abnormal Signal Immunity

The monitor shall not be damaged by improper sync timing , pulse duration , or absence of sync , or abnormal input signal amplitude ( video and/ or sync too large or too small) , or any other anomalous behavior of a graphics card video generator when changing modes , or when any combination of input signals is removed or replaced

.Additionally , under these conditions , the monitor shall not cause damage to the driving source

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.

T	a b l e 1
F u n c t i o n		L E D C o l o r
F u l l P o w e r		B l u e c o l o r
S l e e p		O r a n g e c o l o r

1.3.3.3 On-Screen Display

The Lite-ON 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 saved immediately, the OSD turn off, and new video mode is displayed.

		D e s c r i p t i o n
K e y	W h e n n o O S D d i s p l a y	O S D D i s p l a y e d
M E N U	M e n u D i s p l a y	1 . T o d i s p l a y t h e O S D m e n u o n t h e s c r e e n .
		2 . T o s e l e c t t h e O S D s u b - M e n u
>	S p e a k e r V o l u m e / M i n u s	1 . F o r w a r d s e l e c t i o n o f t h e O S D m e n u .
	( w i t h A u d i o )	2 . I n c r e a s e t h e v a l u e a f t e r s u b - m e n u s e l e c t e d .
<	S p e a k e r V o l u m e / P l u s	1 . B a c k - f o r w a r d s e l e c t i o n o f t h e O S D m e n u .
	( w i t h A u d i o )	2 . D e c r e a s e t h e v a l u e a f t e r s u b - m e n u s e l e c t e d .
A u t o	A u t o A d j u s t F u n c t i o n	M e n u o r s u b . m e n u E X I T / A u t o A d j u s t f u n c t i o n .
E	E m p o w e r i n g	M e n u o r s u b . m e n u E X I T / S c e n a r i o m o d e

1.3.3.4OSD adjustment

ITEM	CONTENT
AUDIO VOLUME	To increase or decrease the sound level
BRIGHTNESS	Back light Luminance of the LCD panel is adjusted.
CONTRAST	A gain of R , G and B signal is adjusted.
AUTO CONTRAST	A gain of R , G and B signal auto adjust.
CLOCK	The ratio of dividing frequency of the dot clock is adjusted.
PHASE	The phase of the dot clock is adjusted.
H-POSITION	The indication screen is horizontally moved right and left (1 Pixels pitch).
V-POSITION	The indication screen is vertically moved up and down (1 Pixels pitch).
AUTO ADJUST	Clock system auto adjustment, about under 8 sec.
COLOR BALANCE	Select three kinds of modes. ( USER /6500 / 9300 ).
OSD POSITION	The OSD indication position can be adjusted.
OSD LANGUAGE	Select the language used for the OSD menu among English , French ,
	Italian , Deutsch and Spanish.
RECALL DEFAULTS	All data copy from factory shipment data.
OSD DURATION	Adjust OSD menu off time range from10~120 second.
POWER-SAVE	Back light of the LCD panel is cut when the signal is not input (AC line
	power consumption 2W or less).
INFORMATION	The frequency of the horizontal / vertical synchronizing signal under the
	input is indicated.

※NOTE : OSD MENU SEE APPENDIX A

1.3.4Monitor Modes and Timing Capability

1.3.4.1Format and Timing

The monitor shall synchronize with any vertical frequency from 56 to 75 Hz , and with any horizontal frequency from 31 to 83KHz. 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 21 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) )