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kaktus' guide - when the display is too bright.

Posted: Fri Jun 01, 2018 1:52 pm
by _kaktus_
Welcome everyone joyfully.

If someone is irritated by an intense display backlight, this can improve even today.
The modification will take no more than 30 seconds. It's really simple ;-)

in our printer model we have a display module marked DZ2001A-V1.0
It is an integrated module. In addition to the alphanumeric display, there is also an encoder, an SD card slot, a reset button and a communication interface with two types of sockets and a buzzer.

The section of the electronic circuit responsible for controlling the light-emitting diodes has been designed in such a way that we can easily modify it.
It is enough to de-solder one resistor for the display not to light up so brightly.

The trick is that originally two resistors (R6, R7) were used, connected in parallel. In this way, the resultant resistance is lower. When we de-solder one of them, the resistance will increase and less current will flow. The LEDs will not light up so brightly.

It is very easy to adjust the brightness using the mounting potentiometer, or a system that adjusts the brightness of the backlight based on the brightness of the surroundings. The second option is already more complex.
If someone likes electronics and is interested in such a modification, please ask.

Re: kaktus' guide - when the display is too bright.

Posted: Sat Jun 02, 2018 4:27 pm
by Gingko
Quite simple and useful a trick,
I only know adjusting brightness with the screw behind the LCD board. XD

Re: kaktus' guide - when the display is too bright.

Posted: Sat Jun 02, 2018 5:22 pm
by _kaktus_
Unfortunately, this display module does not have this option.
I had it spread out into the first parts. ;-D
But here too, the trimmer potentiometer can easily be installed.

PCB has many options pity that the circuit diagram is not available. ;-p