Tag Archives: PC-2

Sharp and Tandy service manuals

Do you know the Sharp and Tandy Service Manuals ?
Here are they, modified to have one PDF file (OCR) per item.

All manuals are scanned from my own materials.
If you have some of the missing manuals (or not in this list) to offer (or sell) please tell me.
If you download something, please feel free to write a little comment.


Download

Download
CE-151 4Kb
MISSING
CE-152 Tape
MISSING

Download
CE-154 Wallet
Not exist

Download
CE-156 Soft tape
Not exist
CE-157 ROM 4Kb
MISSING

Download

Download
CE-160 7,8Kb
MISSING

Download

Download
CE-163 32Kb
MISSING
CE-165 Writer for CE-160
MISSING

Download

Download

Download

Download schematics

Tandy a full system closed to Sharp one.

Most of you better know the Sharp system. Why ?
Maybe because Tandy/Radio shack didn’t follow Sharp along the years for this pocket computer.
Here is the Tandy system :
EMI_2609

We know some PC-3, PC-4… but the PC-2 is still at the PC-1500 step.
I don’t know exactly why…
Someone can help me with this item ?

I already presented the PC-2.
To be precise I presented one version of the machine.
Yes, you really read “one version”, maybe the third one.
On the picture you can see lot of blue straps and a IC named “SC613128” with “A03”.
TRS-80_PC2_004

We know it’s the firmware revision. Then A03 seems to be the third.
Does someone have the first and the second ? Uh… that sounds mysterious…

I have the fourth !
Tandy_PC2_A04

As you see, no blue straps on the CPU board.
In fact it’s exactly closed to the PC-1500 evolution.
But… one moment please…
With some friends we had a really interesting discuss about Tandy and Sharp.
Like the chicken and the egg … which came first?

After reading this first article you have more questions than answers, isn’t it ?
– who have the versions one and two ???
– who can answer the chicken/egg question ???