We have HHP Quick Check 850 Barcode Scanner , when power button is pressed , only LED lights are displayed but LCD screen Dose't showing anything , Also there is no light flashing while button is pressed for scanning.

SOURCE: LCD display

Could be a lot of things: here is general tips for no backlight:

First if there is a suspend switch (usually right below the LCD sticking out of the notebook) make sure its not pushed down.

second: Did the LCD have a red tint before it failed? if not its probably the inverter. If it did then its probably the backlight, but its best to test the inverter using a known good LCD first.

If you dont have one, then any repair shop that deals with laptops should be able to diagnose this pretty quickly (you shouldnt pay more than a 1/2-3/4 hour labor to take apart and diagnose.

if it really needs a backlight, it is a very difficult thing to replace the backlight - i see more people break the screen or electronics on the LCD trying to replace a backlight. always try an inverter first which is only about $20-$50 for the dells.

Its usually comparable in cost to buy an LCD ($100-$200 for the part on most models) than replace the backlight (150-220 is the typical labor charges i have seen. Just find out the part number of the LCD to match up a replacement. Try Bliss which sells screens on ebay - nice company to deal with and has a wide variety of screens,

http://stores.ebay.com/BLISS-COMPUTERS-LCD-SCREEN-STORE

Hope this helps!

SOURCE: Barcode scanner scans and beeps, but will not put the numbers in the computer

There is more than one way for that imager to send data to the computer. Are you using USB, serial, or is there a little box that goes between your existing keyboard and the PC that accepts the scanner connector?

SOURCE: my scanner on my f300 printer won't scan

It sounds like the issue is software related. When the light is flashing it is sending the file to the computer but then nothing is happening. You either have not installed the software or you need to uninstall and reinstall.

Both require you to download the most recent drivers - don't use the CD unless you do not have a highspeed internet connection. Just click on the link and enter product name and the OS and choose the most recent full feature software and drivers.

http://welcome.hp.com/country/us/en/support.html?pageDisplay=drivers

SOURCE: The scanner is scanning but no data is transmitted to the PC

I also purchased a Symbol LS4071 and when I connected this scanner (purchased at a great discount through eBay) to my computer using the keyboard wedge (with a ps2 connection - the round connector - the connector is split like a "Y") I received the error message that my computer could not recognize this external hardware. I went to barcodediscount.com and ordered the usb connector for this scanner as usb connections are usually recognized. The part # for this connector is STI85-0200R. It cost 72.55 with shipping, but I received the scanner at such a wonderful price that I thought I'd chance it and try it with a usb rather than a keyboard wedge connector.
The computer immediately recognized the usb connection, and the usb connector comes with a manual with codes to enable proper scanning, but still no luck getting the data into the computer. So I called Symbol's technical support department. The technician told me to remove the rubber "boot" at the bottom of the hand held scanner (not the scanner base) by pulling on the front of it (where the 2 little round circles are). It's tough to remove, but keep at it. Then gently remove the battery and unplug it, then plug it back in and reattach the base. He said this would reset the battery. Voila!!!! Sucess!!!!

If your scanner's keyboard wedge connection is recognized (a little popup window will say that it is a Symbol barcode scanner and that it is installed and ready to use), try taking the battery out and putting it back in to reset it. Hopefully this will also work for you. Symbol's technical support # is (800) 722-6234.

Oscar Suarez

• 97 Answers
• Posted on Apr 02, 2009

SOURCE: scanner beeps but doesn't enter data into system

Have you scanned the configuration barcodes on the manual? For example if you are using keyboard wedge cable, you will need to scan the keyboard wedge barcode from the manual. Page 20.

http://www.handheld.com/download.aspx?download=/data/ffdefe60-2c7a-423f-a204-ee2450b7c4d9.pdf&filename=IT3800PDF+Linear+Imager+PDF