Sega-Naomi

Hi All,



I'm having problems with a MOK (type 2) gun setup I have... It doesn't calibrate very well (like in the game diagnostic screen, when I get about 2/3 of the way to the edge of the screen the X/Y value jumps to out of range/off screen value ) so you can never shoot anything near the edge of the screen. In the game setup mode there is a cross-hair display, but even after calibration it doesn't track where the gun is actually pointing very well at all, and in-game when I carefully aim in the same place and shoot multiple times the shots go all over the place. It seems that in-game it may be introducing some extra artificial 'wiggle' (for added 'realism'?) but even allowing for that the gun is still way too inaccurate.



I found a doc on seuservice.com that talks about tweaking a couple of the pots on the gun board for switching between MOK and HOTD2. It helped improve the screen-centre setting to a middle value but not much improvement on the edge problem or the actual tracking. The doc also doesn't mention what the other pots on the gun board do or how to calibrate them. I'm not keen on just messing with them in case they potentially could overvolt something.



All the IR emitters in the monitor bezel are definitely sending out IR so I'm guessing they are not otherwise faulty. I'm fairly proud of my 'bright' idea (pardon the pun) of a way to check they do at least light up by viewing them live via the camera on my cell phone, as digital cameras can see IR light.



Does anyone have a clue about a solution to the problems I'm having, or maybe what all the trimmer pots on the gun board do or how they should be calibrated?



Also how likely is it that any little scratches on the front of the gun sensor are throwing it off? Do they need to be kept scratchless to work properly?



Thanks in advance,

Neil.

Scepters need adjustements to be working, regular guns dont. Just check if the gunboard is set to the correct screen settings (dipswitches)

every sensor shows 2 leds lit?

both guns do not calibrate?

is this an original machine?



sensors are correctly sequenced?

I had a similar problem.



Could not get proprer calibration.



I did a search and there was another thread recommending changing the setting from 27 to DX (or the other way around, I don't remember)



The Gun I/O board I had came out of a woody.



(I think in the 27' woodys the mirror flips things around)



On the DX the sensors are the same position as the UNI's



I changed the dip SW setting from 27 to DX



(or the other way around, I don't remember)



I set to default gun settings and everything worked fine



Hope this helps, Can't Hurt



Bob Presutti

footix wrote:Scepters need adjustements to be working, regular guns dont. Just check if the gunboard is set to the correct screen settings (dipswitches)

I was not aware the Scepters needed change to settings.



I just purchased a pair of Scepter shells. Good info to know so that when I get them and swap them out with the standard gun shells and they don't work I'll at least be aware of this.



Thanks

Bob Presutti

good call about the screen size,had a tech once swap out a gun board and not adjust the dips-cab came back to workshop before we worked out the prob

SkiDog wrote:

footix wrote:Scepters need adjustements to be working, regular guns dont. Just check if the gunboard is set to the correct screen settings (dipswitches)

I was not aware the Scepters needed change to settings.



I just purchased a pair of Scepter shells. Good info to know so that when I get them and swap them out with the standard gun shells and they don't work I'll at least be aware of this.



Thanks

Bob Presutti

Hehe. There was a bulletin from Sega about this. Seemed to be a common problem for people upgrading to scepters. I was the one to advert the dipswitch tip on the other post (Thanks to Geezer for the original idea :p). Maybe the guy could have told if it had worked? uh? people these days...

footix wrote:

SkiDog wrote:

footix wrote:Scepters need adjustements to be working, regular guns dont. Just check if the gunboard is set to the correct screen settings (dipswitches)

I was not aware the Scepters needed change to settings.



I just purchased a pair of Scepter shells. Good info to know so that when I get them and swap them out with the standard gun shells and they don't work I'll at least be aware of this.



Thanks

Bob Presutti

Hehe. There was a bulletin from Sega about this. Seemed to be a common problem for people upgrading to scepters. I was the one to advert the dipswitch tip on the other post (Thanks to Geezer for the original idea :p). Maybe the guy could have told if it had worked? uh? people these days...

When I did the 27 to DX change I was wondering what in the world the MOTK/HODT2 dip switch was for. My MOTK is working fine with the switch in the HOTD2 position so I left it there, but I imagine when I get the Scepter Shells I will know what to do with that switch if they do not work.



Thanks Again

Bob Presutti

footix wrote:

SkiDog wrote:

footix wrote:Scepters need adjustements to be working, regular guns dont. Just check if the gunboard is set to the correct screen settings (dipswitches)

I was not aware the Scepters needed change to settings.



I just purchased a pair of Scepter shells. Good info to know so that when I get them and swap them out with the standard gun shells and they don't work I'll at least be aware of this.



Thanks

Bob Presutti

Hehe. There was a bulletin from Sega about this. Seemed to be a common problem for people upgrading to scepters. I was the one to advert the dipswitch tip on the other post (Thanks to Geezer for the original idea :p). Maybe the guy could have told if it had worked? uh? people these days...

P.S. Thanks footix and geezer for the 27 to DX tip on the other post.



It made me go from :smt013 to



Bob Presutti

BTW.



I looked through several gun threads and did a search but could not find the post with the 27" to DX recommendation.



NE1 Remeber which thread this was in?



Thanks

Bob Presutti