Adam problem with keyboard

[Adam problem with keyboard]

The problem is grown.

Now i have garbage on video at typewriter boot,

the pattern does not appear but the all keyboard does not function.

I suppose a freeze, because the adam does not boot from cassette too.

The consolle mode seems ok.

I think a big problem for adam board.

One question: the adam board is a stand alone computer

or uses some chip of consolle board?

The chips on adam are covered by thermal and i don't see

model.

Thanks.

 

Fabio.

[Adam problem with keyboard]

Hi to all.

My first message here.

Recently i have added a Adam to my collection but this unit has a problem.

When i turn on in writer mode or booting with cpm or basic,

on screen appears a pattern of charachters, always the same every

time.

Moreover the keys on the keyboard corresponding to the visualized

charachters is not functioning.

Even the return key, so i can't give any command to adam.

In consolle mode instead all is perfect.

If i turn on without keyobard the problems does not appear,

but obviously adam is not usable.

I have tried to sconnect flat cable of the keyboard and to connect only

electronic board and the problem still show itself, so the problem is not mechanic.

I've removed 8405 chip and problem does not appear.

The cable is ok and the internal cable (the cable conected to the adam

motherboard) is ok too.

What can i also say?

I use with 220/110 converter, the cpm boots correctly so the basic too.

The other keyboard's keys is ok.

The pattern is:

 

/ <return key>

 

;'m,jkyu78

 

 

Thanks

Fabio