Got an 1985 Mac! Memory problems?

[mingis]

Hi, everyone.
In my office dump I have recently found an oldtimer Mac from year 1985 probably. The name "Macintosh Plus 1Mb" stands on the cover. It would be nice to turn it on to be placed to my museum, but shortly after I switch the power, sounds the beep and an icon of a little melancholy Mac appears with the number 02FFFF bellow him. Could it be a memory fault problem? I'm totally far away from the Mac's world.

 

[jimbopalmer]

While it could be a memory problem, I suspect the battery has died.

http://docs.info.apple.com/article.html?artnum=11751

while a new battery will exceed te worth of a mac Plus, it may be fun to get it running. If you do get it running I have free games that fit.

I tried to remain child-like, all I acheived was childish.

 

[mingis]

Thanks,
After further investigations, I noticed, that there are only two (of four possible) memory SIMMS installed, but there is no R9 resistor, meaning "one row" memory configuration. The R8 "256k BIT" resistor is also absent (cut out by possible memory upgrade). Could someone imagine, what value of resistance could I use for that resistor?

 

[Macpwm]

Dear,
Go visit :

http://www.Lowendmac.com

it's a site dedicated to the older Mac.
You will find info on the Plus.
regards,
Macpwm

 

[mingis]

Thank you all,
Internet rules - I found even Mac+ schematics scanned, little bit dirty, but 150 Ohm resistor was there Problem is solved, at the moment I'm trying to make any Mac boot disk on PC. I hope I will have more questions soon.