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| Need Help wiring my DMF-5005 (T6962C) Display http://forum.lcdinfo.com/viewtopic.php?f=6&t=281 |
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| Author: | Grumbler [ Wed Jul 09, 2003 23:44 ] |
| Post subject: | Need Help wiring my DMF-5005 (T6962C) Display |
Hi, i'm trying to get my lcd working. My LCD is a DMF 5005 like this one: http://www.optrex.com/SiteImages/PartLi ... 005aae.pdf I wired it up exactly like this schematic: http://users.skynet.be/bk234359/LCD/Sit ... t6963c.gif The 10k Ohm Poti produces between -8 and -12 Voltage for contrast. The background changed smoothly from totally blank to totally black. So wiring of the poti seems to be ok. I checked every other cable 3-5 times. It's exactly the same as on the schematic. None of my tested software shows anything on the display: LCDinfo PowerLCD LCDStudio... Please help me. Grumbler |
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| Author: | Grumbler [ Wed Jul 09, 2003 23:46 ] |
| Post subject: | |
it should be (T6963C) in the title of the thread. Grumbler |
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| Author: | Henri [ Fri Jul 11, 2003 18:31 ] |
| Post subject: | |
Have you noticed that in the schematic the reset pin is 9 but in the DMF5005 datasheet it is 10 ? |
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| Author: | Guest [ Sat Jul 12, 2003 11:40 ] |
| Post subject: | |
Yes i noticed it. Everything else seems to be the same. Any Suggestions? Putting +5 Volt on reset pin 10 shows a thin line on my display. I found equivalent behavior of T6963C controllers in other threads. plz help. Grumbler |
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| Author: | Grumbler [ Sat Jul 12, 2003 14:02 ] |
| Post subject: | |
My LCD now shows "some" lifesigns Starting my PC lcdbackground is black. Starting Windows lcdbackground changes to white. (I think this happens because the LPT Port is initialized) Starting LCDtesti-> StarTLPTDriver -> shows "ok" -> InitLCD -> shows "ok" and lcdbackground changes to black. ?!? PrintLCDText -> nothing happens 
Any suggestions? Grumbler |
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| Author: | Henri [ Sun Jul 13, 2003 9:59 ] |
| Post subject: | |
What LPT port settings have you selected in BIOS ? I think ECP/EPP is the one usually recommended but others might work also. It might be worth trying different settings if you haven't already. |
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| Author: | Grumbler [ Sun Jul 13, 2003 11:39 ] |
| Post subject: | |
Hi Henri, my BIOS has the following options concerning lpt port. 1. EPP Version 1.9 Described above 2. EPP Version 1.7 LCD schows a thin line at Windows startup or a block or something like that. It seems that lcd gets to much ampere. The border of the dot matrix is also black at some places. Looks like the dots are floating in?! Starting LCDtesti->initLCD shows "ok"-> and LCD becomes black. Not as black as the thin line at startup (too much ampere?) but lcd is completely black. The dots floating in at the border vanish after some seconds. 3. ECP like EPP Version 1.7 4. Bi-Dir (ectional?) like EPP Version 1.7 5. Normal Windows startup like EPP V.1.7 BUT pressing initLCD in LCDtesti makes CPU usage become 100% and LCDTesi hangs?! Still no text on my LCD
I'm helpless. Grumbler |
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| Author: | Grumbler [ Sun Jul 13, 2003 12:48 ] |
| Post subject: | |
I just tried pinout from your page. http://www.skippari.net/lcd/t6963c_schem.html It seems to be more similarly to my LCD. BUT no text on my LCD yet. 
Grumbler |
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| Author: | Grumbler [ Sun Jul 13, 2003 13:38 ] |
| Post subject: | |
I checked voltage on every pin after initLCD. Maybe results can help you to resolve the problem: 1: 1.9 V 2: 1.9 V 3: 5 V 4: -8.7 V 5: 4.2 V 6: 0 V 7: 0 V 8: 1.4 V 9: 0 V 10: 5 V 11: 1.9 V 12: 5 V 13: 1.9 V 14: 2.5 V 15: 1.5 V 16: 1.1 V 17: 1.9 V 18: 1.1 V 19: 0 V 20: 0 V Here is a picture of my LCD not initialized. You see one thin line falling at the border of the dotmatrix where no line should be. 
Here is a picture of my LCD after initialization. You see a darker background of the LCD and the vanishing thin line. 
Grumbler |
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| Author: | Henri [ Tue Jul 15, 2003 11:32 ] |
| Post subject: | |
The lcdtest I made for T6963C only work with displays that have the RD WR CD CE pins connected like in this one: http://www.skippari.net/lcd/t6963c_schem.html I'll have a look into those voltages later, need to go now... |
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| Author: | Grumbler [ Sat Jul 19, 2003 10:07 ] |
| Post subject: | |
Hi Henri, any further suggestions? Grumbler |
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| Author: | Henri [ Sat Jul 19, 2003 15:11 ] |
| Post subject: | |
Been very, very busy during the last week. But things should be getting back to normal after tonight. 
Grumbler wrote: 5. Normal Windows startup like EPP V.1.7 BUT pressing initLCD in LCDtesti makes CPU usage become 100% and LCDTesi hangs?! This is because the program tries to read the busy flag from the lcd and this only works in bi-directional modes. Quote: 1: 1.9 V
2: 1.9 V How are you measuring these ? They should be 0V. And these should be the GND pins where everything else should be measured against. 3: 5 V OK 4: -8.7 V Seems OK 5: 4.2 V Probably OK 6: 0 V Probably OK 7: 0 V Probably OK 8: 1.4 V Probably OK 9: 0 V Not connected so OK 10: 5 V Reset OK 11: 1.9 V Data pins ok 12: 5 V Data pins ok 13: 1.9 V Data pins ok 14: 2.5 V Data pins ok 15: 1.5 V Data pins ok 16: 1.1 V Data pins ok 17: 1.9 V Data pins ok 18: 1.1 V Data pins ok 19: 0 V FONT SELECT 0V=GND=8x8 font, most programs expect 6x8 font but this shouldn't preven't you from seeing anything 20: 0 V Not connected so OK
This looks kinda strange. I've never seen this with my displays.
This one already looks much better and seems to have some contrast althought the line is still seen. |
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