Need help with Transflective mod problem

I moved a transflective 12" screen from a CF-28 Mk-1 to a Mk-2. The new 12" transflective is 800x600 while the original screen was 1024x768. Now on the Mk-2 the display is off-center to the lower right. I tried deleting the hardware driver for the original 1024x768 screen and re-booting, but no joy. How can I get the Mk-2 to recognize the lower resolution 12" display? Is there a special driver for the transflective display?

 

No driver. Its a hardware mod
Jumpers on the m/b on the cf-28 mk-1
FPID1 FPID0 PANEL
Short Open 13.3"XGATFT
Open Open 12.1"SVGATFT
Link to thread here
http://forum.notebookreview.com/showthread.php?t=242379
And another here
http://forum.notebookreview.com/showthread.php?t=208255

Forum member Pipe's quote

Alex

 

Do you have it fixed Springfield

Alex

 

Bueller? Bueller?

 

Maybe that cat has his tongue

http://www.youtube.com/watch?v=WJGcSbWkQ1o

Alex

 

Pipe's info on display compatability was very helpful
http://forum.notebookreview.com/showpost.php?p=3320392&postcount=20

Unfortunately the part I can't get working is for the 12" transflective display from the Mk1 to play nicely on the Mk2 machine, the one combination Pipe didn't try. It seems like the Mk2 should sense and adjust automatically but it doesn't. I can see the pads Pipe described on the Mk1. The Mk2 does not have those pads. The Mk2 Service Manual schematic for the VGA on pg 72 zone 8-F shows two jumpers labeled JP23 and JP24 going to IC6 that seem to control resolution, and a table below has SW1 and SW2 settings for four different resolutions. But I've looked at both sides of another Mk2 motherboard (thanks Toughbook!) and can't find anything labeled JP23-24 or SW1-2.

May have to quit for tonight and waste time with this tomorrow ...

 

Well it should work without the switch, and you are correct the mk2 and 3 will have not switch as it is not required
Do you have the same off center issue in the bios screen, that would narrow down to windows driver problems

Alex

 

I have an 12" transflective LCD for MK2 & MK3... I also have one for MK1s. You can tell the difference by looking at the. The MK2&3s have "ears" on the top of the LCD... All the LCDs on the MK1s are smooth all the way around.

PM me if you need it.

 

Yep, same off-center (low and right) in the BIOS and all during Windows boot sequence. So it must be a hardware issue.

Even tho the 12" transflective came off a Mk1, it does seem to have ears -- slight bulges on each side at the top about 1/4" wide X 1-1/2" along the screen. In fact I swapped the display back cover with the Mk2 unit and it fit perfectly.

 

Then you should be able to swap it.

 

I would think so, but the display is off-center (low and right). Can't even see the Windows taskbar unless it's set at 640x480 and then only a sliver of the top of the taskbar is showing. The upper and left side of the screen are dark, unless it's set at 1024x768 and then none of the taskbar or anything on the right edge of the screen is visible.

 

I had posted here I think a year ago with regards to this matter in relation of swapping a 12" lcd display. There is jumper to be taken off or solder on near the keyboard connector with a zero ohm resistor.

 

Your post is here
http://forum.notebookreview.com/showpost.php?p=4396149&postcount=86
But I am not sure on this now as Springfield is installing the display on a mk-2
Is the hardware mod for the mk-1 only?

Alex

 

Yep the jumpers are found only on the Mk1 -- nothing similar anywhere in sight on the Mk2.

 

Oh! sorry, I have not read from the very beginning of the thread thats what happen to a bored reader like me. Lol

Anyway, did you slide the connector on a right position on the mbo. the one with piece of metallic plate coz thats the only posibility of all its trouble. Maybe its upsite down connection. Check it to make it sure.


ohlip

 

That's a great suggestion ohlip, it must be something like that. But the metal connector only fits in one way. However the white plastic plug to CN9 looks like it would fit either way -- Anyone know for sure which way that plugs in? Would it be safe to just reverse it, boot up, and see what happens?

 

It SHOULD only fit one way... But I guess it would be posible to force it... (You DO NOT want to do that!)

If you have a good magnifying glass or magnifying headset you can give it a good look!

 

I have noticed a lot of the connectors that can be placed upside down and fit, have a small felt pen mark across the top over both ends to confirm placement

Alex

 

You're right (as usual), both connectors are keyed to fit only one way.

Any other ideas I can try to get this working right?

 

Your issue sounds like possibly one of horizontal or vertical sync; I remember a similar issue on the old NEC Versa 4000 series. The fix was a soldered jumper on the LCD panel itself which changed the default horizontal scan frequency....

mnem
It may not be the RIGHT idea, but it's an idea!

 

Now you have me wondering... Check the wires going into the metal strapped connector. (The larger of the two) Make sure there are no broken wires. While Panasonic did a good job in binding all of these together so that when you pull the connector out.... It comes out. However... After several years and who knows what type of environment these have been in... They can be stuck in place. I've had two that have broken off 1-2 wires in the connector braid, (Under the taped area) close to the connector itself. If you can spot them... Usually you can fix them... But some of the wires are so fine it may be easier to just buy a new monitor.

 

PM Toughbook
Say that you have given up in frustration
And ask for a good deal on one of his displays

Alex

 

An excellent suggestion! In fact Rick put one in the mail to me today. Guess I'll return the Mk1 display to its rightful owner (Mk1 machine) and install one made for a Mk2 when it comes in.

I was hoping to get this running on a machine capable of more than the 256MB memory limit of the Mk1 since Windoze is such a memory hog. Maybe I'll have to try Ubuntu or another *nix on the Mk1 box to get decent performance.

 

That little monotor is running to you with its little monitor legs at this very moment!

 

Got another transflective display from TB that's made for the Mk2, it installed and works just fine. Then I put the Mk1 display back onto the Mk1 box and it works fine too.

Upshot: The transflective 12" displays are not compatible between Mk1 and Mk2. It has been shown before that other types of displays can be swapped between Mk1 and Mk2 (with proper jumper settings on the Mk1), but apparently not the same compatibility for transflective models.

Thanks to all who helped with suggestions, ideas, and especially parts!

 

That was easy then lol
After you have tried it out a bit ,let us know what you think of Transflective displays

Alex