MaxTech XT4888 user manual Troubleshooting, Appendix a Specifications

Section 4 - Troubleshooting

No picture, power indicators A, B, C off

•Check AC cord is plugged into outlet and monitor.

•Turn on the power switch.

No picture, power indicators A, B, C on.

•Check that video cable is connected completely.

•Adjust brightness and contrast controls.

•Turn the computer on.

No picture, power indicator A off, indicators B and C on.

•Monitor is in DPMS “SUSPEND” mode. Press a key or move the mouse.

No picture, power indicators A and B off, indicator C on.

• Monitor is in DPMS “OFF” mode. Press a key or move the mouse.

Image is not centered

• Adjust Vertical Position and Horizontal Position controls.

Appendix A - Specifications

Picture Tube	Size	14-inch diagonal
	Dot pitch	0.28mm
	Surface treatment Non-glare
Bandwidth	65MHz
Data Area	9.76 x 7.20 in.
Display mode
Mode	Resolution	V. Frequency	H. Frequency
VGA I	640 x 350	70 Hz	31.47 KHz
VGA I	640 x 400	70 Hz	31.47 KHz
VGA I	640 x 480	60 Hz	31.47 KHz
VGA II	640 x 350	84 Hz	37.86 KHz
VGA II	640 x 400	84 Hz	37.86 KHz
VGA II	640 x 480	72 Hz	37.86 KHz
SVGA	800 x 600	60 Hz	37.88 KHz
SVGA	800 x 600	72 Hz	48.09 KHz
Ultra VGA	1024 x 768	60 Hz	48.37 KHz
Synchronization	Horizontal:	30-50 KHz
	Vertical:	50-90 Hz
Deflection
Geometric distortion		H.<=2.5mm, V.<=2.5mm
Linearity distortion		H<=10%, V<=8%

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