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| 14-pin LCD (pc-pr50a??) http://forum.lcdinfo.com/viewtopic.php?f=6&t=1207 |
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| Author: | VortXxe [ Wed May 18, 2005 20:31 ] |
| Post subject: | 14-pin LCD (pc-pr50a??) |
I have this LCD out of a photocopier that i would like to control using either a parallel port or a PIC microcontroller. There are 4 OKI M5260 chips on the PCB, under the lcd. Right below a 14-pin connector on the left (looking from bottom), there is one 74hc386s chip, and some sort of panasonic chip beside it. Below these are one c324g and one sc17661mca chip. What i have been able to determine with a multimeter (i am just making assumptions on most of this): 1 - VCC?? (connects to pin1 of most of the small ICs) 2-5 - Ground (connects to the case of the lcd) 6-7 - Unkown. Can't find where they connect to 8-13 - unknown, they all go to surface mount capacitors or resistors or somthing right above the connector. The other side of these capacitors or whatever are connected to what i assume is positive (pin1). maybe 6-13 are data inputs? 14 - No idea There is a pot soldered into the board. I assume for contrast adjustment. I have never hooked up an LCD before, and am hoping someone can give me some tips on how to hook this up. Thanks. ps: i'll add some pictures later when i get home if this isn't enough info. edit: Forgot to say, the backlight is a cathode tube, and powered by an external transformer, it has its own wires and i've got it to work under 12vdc. edit2: I forgot to mention, these are the things written on the back (i've googled all of them with no success. on a little white sticker, there are two lines, line1: EDMMPR5B0F, and then on line 2: 2009H0 Under this, there is the following: PC-PR50A etched into the circuit board. |
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| Author: | VortXxe [ Thu May 19, 2005 6:25 ] |
| Post subject: | |
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