Computer Tech Link 7cln manual Troubleshooting, Description for D-SUB Connector

TROUBLESHOOTING

Symptom		Check
No picture.	Check if power switch and computer power switch
	are in the on position.
	Check if the signal cable is correctly connected to
	the video card.
	Check if the pins of D subconnector are not bent.
	Check if the computer is in the power- saving mode.
POWER LED is not	Check if power switch is in the on position.
lit.
	Check if the power cord is correctly connected.
Image is unstable.	Check if the signal cable is suitable to the video card.
Image is not	Adjust H &V Size or H&V Position to get the proper
centered, too small	image.
or too large.
Picture bounces or a	Keep the devices that may cause electrical
wave pattern is	interference away from the monitor.
present in the
picture.	See the FCC information at the front cover of the
	manual.
Color looks blotchy.	Operate Degauss once.
Picture is blurred.	Adjust Contrast and Brightness.
	Operate Degauss once.
Edges of available	Adjust Pincushion/Trapezoid.
area on the screen
are not straight.
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DESCRIPTION FOR D-SUB CONNECTOR

Pin	Signal
1	Red
2	Green
3	Blue
4	GND
5	GND
6	GND-Red
7	GND-Green
8	GND-Blue
9	+5Vdc
10	GND-H.Sync
11	GND-V.Sync
12	Bi-directional Data(SDA)
13	Horizontal Sync
14	Vertical Sync(VCLK)
15	Data Clock(SCL)
1
6	10
	15

* GND=Ground

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