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It is almost certainly the LCD inverter which is the cause of your issue. It ism ore common for the inverter to develop a fault than a backlight bulb on the LCD (I used to work in a Toshiba repair centre).
Replacing the inverter should be simple, just make sure the unit is powered off with the battery removed so you don't get an electric shock.
Hope this helps,
Here's information from the HP manual: Use the copy features The HP All-in-One enables you to produce high-quality color and black-and-white copies on a variety of paper types, including transparencies. You can enlarge or reduce the size of an original to fit a specific paper size, adjust the darkness of the copy, and use special features to make high-quality copies of photos, including borderless copies.
Press Copy repeatedly to display the appropriate menu. The following menus are available: – Number of copies – Reduce/Enlarge – Copy Quality – Copy Paper Size – Paper Type – Lighter/Darker – Enhancements – Set New Defaults 2. Press the until the appropriate setting appears. 3. Do one of the following: – To change more settings, press Copy. This selects the current setting and displays the next menu. – To start the copy job, press Start Color or Start Black.
To save the current settings as defaults for future jobs 1. Make any needed changes to the settings in the Copy Menu. 2. Press Copy repeatedly until Set New Defaults appears. 3. Press until Yes appears and then press OK.
The only option I see that comes close to this is the "fit to page" option described on page 35 in the manual. Apparently, it detects the size of the original and enlarges it to fit on the paper size selected. Otherwise, I see no options for enlarging or reducing while copying.
try the following:
try first of all to clean the screen using a wet towel because the problem might be that the windex has made a dark layer on the screen ...
if this does not work then if u have a vacum machine that can can get the screen dry by blowing air on it...this might work
if not then you have to send it back to the manufacure
I have found that when scanning b/w documents, its helpful to start with a black and white copy, not a grayscale, pen written, or printed form a printer in grayscale mode copy, but a true black and white on the copier or fax copy. The scanner doesnt read shades of black so well and when scanning multiple page documents, my pixma tends to scan in lightly. I havent found a piece of software to do just this, batch darken what has been scanned (at least not for free). Copying before scanning is the work around. Hope this helps everyone who's had this problem. It also doesnt hurt to darken what your scanning down a notch when copying