ZX-News #39 18 августа 1997

Железо

Working with screw - Connect the hard drive.

         Work Hard Disk


  Begin work necessary to connect
hard drive to the controller board. Perhaps this is the 
simplest and at the same time the most responsible action. When 
errors possible failure of not only the hard

disk controller, but also your computer. So be very careful.


  SMUC controller is inserted into the connector
so that details of the controller as if
"Looking" for details on your computer. If you
insert the controller into the expander, then
its connector must be soldered to the 1 st and 2 nd
rows of holes of one seat, and
controller in this case is the "face"
its details to the details of your computer.


  The controller connects to the hard drive
40-wire ribbon cable (flex), so
to 1 contact coincided on the controller, and
hard drive (usually holds the first
contact is highlighted in blue or red). Power is supplied to 
the hard drive via the terminal, similar to the same 
"nutritious" on the drive. 


  Also note the jumper mode hard disk (slave / master). Jumper 
must be installed on a pair of contacts "Master", otherwise the 
presence of the hard drive does not identify the computer. 


  After all the connections you can turn the power on the 
computer screen should appear once familiar inscription "fast 
test of computer "(in recent versions of the TM first appears 
on the copyright), and then several reports found (or not 
found) devices Controller SMUC (Fig. 3). After the hearth


   1993-1997 MOA Shadow Service Monitor


       * Fast test of computer *

 Computer: Scorpion ZS 256 (R)
 RAM: 256 K
 ROM: 256 K

 SMUC: Ver. 1, rev. 3

 CMOS not found
 NVRAM found
 Interrupt controller not found
 Serial port not found
 IDE / AT 1030 MB Hard disk found
SAMSUNG WN310820A (1.08 GB)
Serial Number: 743010443b00
Firmware rev.: FS100

                                         


                  Fig.3

chi power hard drives of various firms and
models behave differently. But the characteristic is small 
(less than a second) pause, then the sound of aircraft taking 
off in a nutshell (with advanced models it is almost 
inaudible), this promotion of the disks themselves 
("Pancakes"). Then, the "recalibration" and internal testing 
mechanism magnetic heads, expressed in the lung

(As in older models - quite loudly) "pohryukivanii. The whole 
operation self-test occurs at each power (and, incidentally, 
regardless of Connection to the controller), and lasts from

5-10 to 30 seconds.


  If after switching voltage hard
CD "silent", then either he lacks the power source (it can be 
verified by measuring the voltage tester +5 and +12 B) or wrong 
(vice versa) is connected cable connecting the hard drive and 
controller. Insufficient power source supply may cause an 
unstable disk (this is especially true for older models that 
may consume a pulse current up to several amperes of 12 volts, 
to compare the new modern hard drives can consume less floppy 
disks). I like Just such a problem and there. PSU regularly 
"pulled" motherboard of a computer, two drive Stereo AY, 
controller Kempston-Mouse, XTR-Modem and himself SMUC, but when 
you connect the hard drive even drives stopped spinning.



  Now look at the screen. If, despite "attempts to" the hard 
disk on the screen immediately appears on "Hard disk not

found ", then again, most likely" upside down "cable, 
improperly installed bridge mode hard drive or not enough power 
for the interface of hard drive (interface part of any hard

disk usually works even when detecting errors and self-test 
reports of these controller). It is possible, however,

complete loss of the entire electronics of the disk.