MAXTECH XT4888 User Manual
5
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.
• 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.
• 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
Geometric distortion
H.<=2.5mm, V.<=2.5mm
Linearity distortion
H<=10%, V<=8%