ZX-News #16 26 ноября 1996

Железо     Scorpion ZS

Iron - Repair of computers such as Scorpio-256.

                  Iron



  With this issue we begin a series of articles
computer repair type SCORPION 256
their species TURBO and TURBO +.


             (C) Sergey Zerov



  From the main tuner company Scorpion

         specifically for the ZX-News!


  Pursuing a computer repair company in
SCORPION more than two years, I came to
concluded that 70-80% of faults experienced
the user can remove himself. Especially
it concerns the distant regions of the Soviet Union (former).


  But it was my memory card, which traveled from Sakhalin and 
the back because of one transistor KT361. Users pity!



     And now a few comments:

 - Articles are intended for users
have experience with a soldering iron and an oscilloscope.

 - The author is not liable for unskilled repairs.

 - Questions about poor quality work "left" cards will not be 
discussed. 


  Extrasensory abilities do not have, therefore, by telephone 
and pictures not be repaired. While some councils give

I:


  Computers Scorpion (model boards to versions SC13) collected 
on chips series 555. All other versions of cards collected

exclusively on chips Series 1533,
including TURBO +.


  The exception is the output buffer
Keyboard (155LP9), printer (555IR23) and
drive (155LA13 and LN5). In models TURBO
and TURBO + 531TM2 used in the input divider 14 / 7 Mhz, as 
well as specialized m / s ALTERA, which is the analogue

PLA.


  Replace m / s should be based series. In
Otherwise, the card can work with
Crashing (especially boards TURBO (+)).


  Particularly want to talk about the ROMs. In the cards
TURBO + 27c512 EPROM chips work with
version of the Shadow Monitor 2.95 and TRAC ROM
version 3.2 and above.


  In the cards work TURBO chip EEPROM
27s512, some 27,512 copies and TRAC
Rom all version.


  In conventional board runs any version of
conventional ROM (including all improvements) and
TRAC ROM version 3.40 (in terms of the firm).


      Statistics.


   Reasons for failure:


   40% - Power Supplies

   30% - Statics (especially in winter)

   15% - connection error

   15% - Other (filled with beer, etc.)


  To begin with, I think, will suffice.


  For repairs I can be found in
Service center of "Scorpion" at:


   12th Red Army Street. g2 komn.1

       tel.: 251-1262 (from 11 to 18).

            Sergei Zerov (CB).


  Any questions you can send to the newspaper ZxNews or soap at:


   FidoNet (2:5030 / 362.2) @ Ilya Vasilyev


  In the next room News-ki will be considered typical 
malfunctions and glitches on "green" cards Scorpion ZS 256 
Turbo + 


          To be continued ...


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