Nanao MS9-29 "Goop of Death"?

[cgbartek]

Well, I went to check on the OSD on a random Blast City to see what I could find, and the weirdest thing happens. After about a minute, the screen shuts off. So I turn it off and turn it back on. It runs for about 15 seconds, then shuts off again. I shut it off and on, same thing. Anyone know what's going on? Protection circuit?

...I HATE these monitors.

[Ordyne]

Yes it's the protection circuit.. quite often they will fire up at some resolutions but not others..

[cgbartek]

I just threw the chassis in a different machine and gave it a low res game instead... no love
It stays on a few seconds, then the picture goes out and the neck glow dies down.

What's next? Should I turn down the B+, etc.? What causes the circuit protection to flip?

[grantspain]

this is one of the very few monitors that have no knowledge whatsoever of as i have never seen one in the flesh,as for the question about it cutting out well that could be anything causing that,from a capacitor to an ic-normally it will be something like the b+ unstable but without a full schem impossible for me to say where to check
if you want it fixed then get the chassis out and send it to ordyne,he has the knowledge

[grantspain]

is there a factory reset in the extended test menu?

[noisuf]

Hi, I was wondering if anyone wrote a guide on goop prevention? Cheers.

[r3zon8]

Well I was able to get one of my dead "gooped" chassis running again. The problem was the auto-sensing on it no longer works. It was stuck in 24khz mode so my 15khz game that was hooked in would just be scrambled. After I installed the jumper from the v-sync to the c/h-sync, i noticed my OSD came back and it looked great. This made me believe there was nothing wrong with the monitor itself. Tonight I decided to directly plug my DC into the VGA port and give it a try. Sure as ****, the thing changed to 31khz mode and displayed perfectly! Now, going back to the 15khz board, it was stuck at 31khz. I have no mid-res games to try to get it to 24khz again. But hey, I now got a 31khz monitor that I didn't have before. (even if it's just good to play Guilty Gear and Ikaruga on DC ) I will be investigating why the auto-sensing is breaking and I will also be trying the sync jumper on my other chassis when I get it back together, maybe it can be fixed too.

srarcade, can you explain what you did after you plugged in the Dreamcast to force it to change to 31khz mode? what # pins did you short on what header?

[uncletom]

Anybody have a service manual for either the MS2930 or the MS2931 please?

[Rossyra]

http://www.sega-naomi.com/resource.htm"

4th link down

[Cageman]

http://www.sega-naomi.com/resource.htm

4th link down

That is the manual for the Sanwa 29E31S, not a MS2930/2931.

[uncletom]

Thank you anyway, guys.

Well, I would like to have scans of both ..30, and .. 31 types. First hand/original scans would be super. I do have a rather mediocre copy of the MS2931 somewhere, but it's too much work to clean it up, I feel. Would save me lot's of photoshoping if somebody would have an original.

[gumdrops]

I wouldn't mind getting my hands on a scan of a 2930 manual either.

[clutch]

There's a 2932 and a 2934 on tamdb.net. Don't know how different the models are.

[uncletom]

Thank you Clutch. However these aren't the manuals I was looking for. The ..32 is for Crazy Taxi, and the ..34 is for 18 Wheeler.

The MS-2930 & MS-2931 are a bit rare, I think. They are found in these Blast City cabs, and a few of the tripple monitor SEGA cabs housing F355 Challenge, Airline Pilots and such. They are tri-synk monitors, the ..31 is autoswitching and the ..30 seems to have switches to set the mode.

I do have the manual for ..31, including schematics. And I am working on it at the moment.

My main chassi schematic is missing a slight column through the middle, the guy who copied it for me must have been in a hurry. So I am also trying to stitch together this. Besides that I'm also cleaning the documents to optimize the size of the PDF later.

[uncletom]

Someone asked how to get into the factory mode of MS-2931?

Press all three OSD-buttons for three seconds. (First hold the up & down buttons then press Mode-button)

Also this is cool: If you want to scroll through the options in reverse order, hold MODE while tapping DOWN. This will save time if an options is passed too quickly. There are alot of options in the factory menu.

[andygeezer]

I added my last MS29-31A chassis which was bought from Sega couple of years back.. impossible to find now..

http://triplemoonstar.brinkster.net/the ... ockid=2603"

The original list price from Sega was around £800 for the chassis alone!!

[uncletom]

Oh yes, Andy. I remember that these were horribly expensive. I bought my MS-2931-S (complete monitor) during my 'golden days of enterprising'. Reason was that I needed a monitor with a good picture. It was Evelyn's tip of the day actually. I think the total inc. shipping was 12000 SEK.



_________________________________________________________________________

Just a few usable tips for you guys who want to scan your manuals, how to do this in a proper way.

The settings of the scanner should be blackwhite, no dithering or any fancy stuff, certainly not 'grey scale'.

For regular text pages with simple illustrations 200 dpi is enough.

Schematics could use 300 dpi if there are small details. But still use blackwhite setting, unless the pages are really worn and you need to capture *all* information there, perhaps for later cleaning och repro.

While a text page, and pages with simple BW illustrations, are easilly managable in photoshop (I use 'Photoshop 5', which is a quite old but very sufficient picture management app), the schematics may need serious adjustments. Because schematics are larger than regular A4 format we need to scan them progressivly.

I usually take appart the manual completely, SEGA manuals allow you to remove the binders. But do this carefully, you want to be able to put these back in place to seal the manual again after scanning.

The loose papers are now easilly scanned. And the schematics are too if you just hold one hand on the scanne lid while pressing 'Scan' with your other hand/ mouse finger (depending on what scanning-app you use).

About the schematics, you will usually end up with two separate pictures that need merging, and occasionally also rotating.

In PS5: first make duplicates of your two pics just in case you need to do it all over again. Then make one picture, example the right side of the schem., 200% wider aligning the original pic to the right. This will leave you with a large surface on the left where you will paste your left side schem.picture. Now, there are certain helping guides to easy rotation of the picture. But I do this by eye only because often the 'originals' were copied poorly thus being wavy, or assymetrical from the beginning.

One other helpful 'tool' is to make the top layer/picture 50% transparent. This will allow you to exactly position this layer on top of your first layer, and rotate it into exact place. Just make sure that your first layer is adjusted to the best possible orientation before you adapt the other layer to it.

Then make the second layer 100% not transparent again, and press ctrl+E, which merges the two layers to one. Then trim the outer edges, centering the schematic and convert to indexed color (2 colors, black & white) and save as GIF. That's enough really.

However, I also clean the pages using the erase tool, or just a white brush, removing all the irritating dots and garbage that so often follow the documents. It could be simply a grain of dust in the scanner, or a hair from your pet. Plus that clean documents take up much smaller space and are much more pleasant to read, when clean.

Last, I use DoPDF6 to 'print' the PDFs. It's a simple an easy app, and it's free.

[uncletom]

Well then boys, here you are:

First a little warning (in japanese)
http://hem.bredband.net/emergencycallam ... arning.pdf"

And then the good stuff!
http://hem.bredband.net/emergencycallam ... manual.pdf"
http://hem.bredband.net/emergencycallam ... matics.pdf"

Please note that schematics has a small portion missing around its middle. I have no idea what resistors, or diodes/ caps are missing there. But I hope it's no critical portion.

[clutch]

The 2933 comes in Blast Cities as well.

[uncletom]

Interesting. I've never heard of a MS-2933. How does it look?