NANAO ms8-26su Help Please.

[Fozzy The Bear]

Hi Guys!!
                 I just scored a cracking deal! a NANAO ms8-26su Monitor. Got it off ebay, from a guy local to me who had completely stripped a fully working SEGA Virtua Striker. I nearly cried! It was not only fully working but in absolutely immaculate external and internal condition and with hardly any hours on it. The monitor is really clean I've seen ones in our own arcade look dirtier than that, after just a couple of months use.

Got the monitor for £17 GBP....   

However... when I got there, he said I'm trying to get rid of the cabinet as well.... I just scored this immaculate condition cab for £10 GBP !!!!!!!  Picking the cab up on Monday.

Now on to my problems..... He's already sold the game power supply... I'd guess but I'm not sure, if the isolation transformer has also gone from the bottom of the cab forgot to look...  .  I note that the NANAO needs one to work in the UK because it's 120V input. So I can't fire it up right now.

First thing I desperately need is a manual for this monitor.... does anybody happen to have one please? I searched the forum and the web with no luck on this.

Given that it's already stripped, this cab is prime candidate for being my new Mame machine.

Please help me out if you can guys. I really need to know how the sync is wired on this monitor and also what the heck the SS Switch on the tweaking controls under the screen does?? is it the degauss??

The other thing I need to know, is do you guys think it's practical or possible to run this monitor from the S-Video out on an ATI card?? I'm really not bothered about running at native game resolutions, so I'm not wanting to look at an AVGA Card if I can avoid doing that and still get reasonable results on screen. This is the main reason I need to know how the sync is wired.... It appears to have RGB pins + 2 Sync wires... However I always thought that this model ran on composite sync?? any clues here??

Best Regards,
Julian (Fozzy The Bear)

[modessitt]

First of all, if you need Nanao help, you could try Jomac (www.jomac.net.au/mon.htm) who helped me fix a MS8-26SU vertical deflection circuit.  He's also contributing articles to the Startech Journal (subscription service) so may not give out free advice anymore, but you may be able to buy a manual copy from him.

The MS8-26SU is a med-res monitor, so you'll need to keep that in mind when trying to use it with standard-res games.  Standard-Res games will not play properly on this monitor if you're using the unmodified video signal.

I don't know ArcadeVGA too well so don't know what you could do to run Mame on this monitor for all resolution games.

Anyone else?

[Fozzy The Bear]

The MS8-26SU is a med-res monitor, so you'll need to keep that in mind when trying to use it with standard-res games.  Standard-Res games will not play properly on this monitor if you're using the unmodified video signal.

As I understand it you can switch this monitor to 15Khz standard res mode by swapping the plug on the board from the High (medium res) position to the Low (standard res) position......

Thanks for the tip on Jomac.... I already tried to contact them, but have not had much luck there. I was hopeful that as several people on here seem to own these monitors, at least one of you guys might have a manual scan??

What I really need is a pinout for all of the header plugs on the board and to know what that ss switch is... it seems to latch on and latch off, like a power switch. But I wouldn't have thought it would be that.  I can't see a Degauss activator marked anywhere on the board, yet I know that all SEGA machines carry a button on the service panel to trigger it.

My other question related to connecting S-Video to the inputs and if it was worth running it that way. Which again requires knowlegde of the pinouts.

Thanks for your input here! 

Best Regards,
Julian (Fozzy The Bear)

[Ken Layton]

Nanao has been out of the arcade monitor business for several years. Here in the USA it's impossible to get any Nanao manuals or schematics. Jomac might be the only one who'd have a schematic. He's a member of this very forum, but has not posted anything since May of '06. I think he made some sort of deal with Star Tech Journal to send people there and may no longer provide free information/help.

[Fozzy The Bear]

Nanao has been out of the arcade monitor business for several years. Here in the USA it's impossible to get any Nanao manuals or schematics. Jomac might be the only one who'd have a schematic. He's a member of this very forum, but has not posted anything since May of '06. I think he made some sort of deal with Star Tech Journal to send people there and may no longer provide free information/help.

Hi Ken, 

             There doesn't seem to be much information on this side of the pond either. I tried "Eizo"  who effectively bought out "Nanao" but they haven't even replied to me. The prices of the information over at Star Tech scared the heck out of me.

Best Regards,
Julian (Fozzy The Bear)

[Ken Layton]

             There doesn't seem to be much information on this side of the pond either. I tried "Eizo"  who effectively bought out "Nanao" but they haven't even replied to me. The prices of the information over at Star Tech scared the heck out of me.

Yes I even tried contacting Eizo a while back and all I ever got for a reply was, "Did we make that?" and "We don't support arcade monitors anymore".

I know what you mean by Star Tech's prices. I used to post on their forums, but then they went from a free site to a pay site. Now a technician has to pay to leave information on the forums! Then they take your information and publish it in their magazine. You pay to read the forums, you pay to leave information, then you pay to 'subscribe'.  That's why I left.

[Fozzy The Bear]

I know what you mean by Star Tech's prices. I used to post on their forums, but then they went from a free site to a pay site. Now a technician has to pay to leave information on the forums! Then they take your information and publish it in their magazine. You pay to read the forums, you pay to leave information, then you pay to 'subscribe'.  That's why I left.

Well... both of us are arcade professionals and both of seem to be of the same opinion on this. I think they really missed the point. They've turned it into an exclusive little club that nobody wants to join.

Best Regards,
Julian (Fozzy The Bear)

[northerngames]

Now on to my problems..... He's already sold the game power supply... I'd guess but I'm not sure, if the isolation transformer has also gone from the bottom of the cab forgot to look...  .  I note that the NANAO needs one to work in the UK because it's 120V input. So I can't fire it up right now.


As I understand it you can switch this monitor to 15Khz standard res mode by swapping the plug on the board from the High (medium res) position to the Low (standard res) position......

....correct


.......it is japane made and runs on a 100 volt with a built in transisitor I can get a picture of mine from my virtua fighter.

First thing I desperately need is a manual for this monitor.... does anybody happen to have one please?

.....looked for many weeks and no go.

Please help me out if you can guys. I really need to know how the sync is wired on this monitor.

........1:Red
        2:Green
        3:Blue
        4:Gnd
        5 H Sync
        6 V Sync

 and also what the heck the SS Switch on the tweaking controls under the screen does??

.......I think it has to be hooked to the switch unit becuase without it mine does nothing either but I dont need it anyhow

....the switch unit is on top of the coin box with a deguess switch without it I am not sure how it work's but if you need the unit I still have mine that was pulled working.

The other thing I need to know, is do you guys think it's practical or possible to run this monitor from the S-Video out on an ATI card??

.....I use a arcadevga v2 and video amp

.....you will need a video amp or it will be to dim.

[Fozzy The Bear]

........1:Red
        2:Green
        3:Blue
        4:Gnd
        5 H Sync
        6 V Sync

Thanks for your help with this... It sounds like our machines may have been wired differently. The input leads are still there but only 5 wires.  Red, Green, Blue, white and blue/white..... the first three are pretty obvious... Looks to me like this one must have been running composite sync.  Going by your list that would make the white wire the ground, and the blue/white wire the composite sync on the H-Sync connection.

Still haven't been able to locate the degauss connection on the board though. I now suspect that the SS Switch is a sync swap for running the image mirrored when in a cabinet that uses a mirror to view the monitor. But I need to confirm that.

Best Regards,
Julian (Fozzy The Bear)

[grantspain]

some nanao's use 100v like the later 31k used in naomi cabs,earlier models according to my specs like the ms8 use 120 v from a step down transformer
when i am back at work on tues i will meter the input on my manx tt to see the voltage level
does your chassis have the input loom (1 to 3 plugs)?

[northerngames]

mine runs on 100-volt input

mine also has 5 input and ran on composite sync stock both H/V on one wire but if you want to split the h/v it need's to be like the pin-out above my plug has been removed and the wire's are soldered into the via's.

I leared this from the desighner of these that sold the make out to eizo and ken here for the 25khz to 15khz wire harness swap on the chassis.

all ms8-26su  video input's are the same I leared how to split the H/V becuase if you do not a light gun will not work untill you split it on it's own H and V path seperatly.

also when I installed mine to the arcadevga I could not get video at first untill I checked the wire's and found that the ground and sync were split half way down the wiring and the sync color changed over to the ground wire color and the ground wire color changed over to the sync color I am not sure if this was done stock or if somebody did it incorrectly after the fact or what but just thought I would mention it in case you run into the same thing becuase I do not know if the makers did it or some weird tech guy afterwards lol.

here is a little more info I pulled from anothers topic

The Comp H-Sync input on the chassis means it will accept a signal from a
game that is producing a composite negative sync , if however you are not
supplying this pin with a composite sync you need to also connect the V-sync
pin .
Basically Composite is a combination of the V and H , but as you are not
going to be supplying the chassis with a combination you can use the H and V
pins separately as you need without any modification to the chassis.
Just remember the both V and H and Negative Sync

1:Red
2:Green
3:Blue
4:Gnd
5 H Sync
6 V Sync

[Fozzy The Bear]

some nanao's use 100v like the later 31k used in naomi cabs,earlier models according to my specs like the ms8 use 120 v from a step down transformer
when i am back at work on tues i will meter the input on my manx tt to see the voltage level
does your chassis have the input loom (1 to 3 plugs)?

Yes... This one is rated 110V to 120V... the power input fuse is a 125V 6.3A

We've got a Manx TT.... But it's got Sanwa Monitors in it.

The loom is two plugs one 3 pin for RGB and one 2 pin for sync and ground.

Now on to the good news!!!.....

My Boss was having a clear out in his office today and asked me to dump a load of old paperwork. In which was a big box full of machine service and user manuals. I immediately asked if I could keep them and he was only too happy to see the back of them.

As I picked up the first one in the pile (house of the dead 1) out from underneath it came a service manual for "Virtua Striker Upright Cabinet".... I couldn't believe my eyes or my luck.... With total trepidation I opened it up to find that it also had the NANAO MS8-26SU Monitor service manual and a full set of schematics in it 

SO! I'll be scaning that and turning it into a PDF. I know a lot of people here would like a copy. The schematics are not great. A lot of the values in them are bit unreadable it looks like SEGA just photocopied the Nanao manual to include in theirs.... But it's the best thing since sliced bread was invented as far as I'm concerned right now. WOOOHOOO!!

Thanks for all your help and interest guys! Very much appreciated.

Best Regards,
Julian (Fozzy The Bear)

p.s. That SS Switch is a sharpness control... with two settings of Normal and Sharper.