}PNX1000}.lqof
                           ORPHANWARE
                         5665 MYERS ROAD
                         AKRON, OH 44319
                          216-882-4720

WARNING--This  drive  modification should be  attempted  only  by 
experienced  computer  service technicians.  If you do  not  have 
extensive  experience in computer servicing, have some  one  with 
the required experience do the work for you.  Orphanware will not 
be  responsible for the results of any modification not  done  by 
Orphanware.

ESD CAUTION--This equipment is static sensitive and can be easily 
destroyed.  If you do not know what you are doing, please take it 
to  someone who can help you.  Failure on an electronics  project 
such as this can be traced to ESD damage in 75% of all instances.

The  320K  or 320 conversion kit is supplied with  out  warranty.  
This  is  due to the fact that we at Orphanware have  no  control 
over  the quality of work that is performed by the customer,  nor 
do we have any way of knowing the condition of the drive prior to 
modification.   We  will replace for 30 days, any  part  supplied 
with  this kit that fails do to defect in materials  or  workman
ship.  This includes the SYSTEM EPROM, the FUJITSU drive assembly 
and the 7405 IC.  In order to be able to return any part, it must 
be in the same condition as when received by you.

To   accomplish  this  mod,  remove  the  drive   from   service.  
Disassemble  the drive by removing the top and 2  bottom  covers.  
Then remove the 2 sheet metal screws that hold the front panel on 
and lay aside all the plastic parts for later re-assembly.  Next, 
remove  the  MPI  drive  section from  the  drive.   Do  this  by 
disconnecting  the  34  conductor ribbon  cable  from  the  drive 
assembly,  disconnect the power connector, the green wire  behind 
the ribbon cable and the sensor connector.

Lay the drive assembly just removed aside.  Now, remove the power 
connector for the drive controller board.  Clip the blue wire  at 
both  connector  ends.  Next clip all 3 remaining  wires  at  the 
center  and splice in the 3 sections of wire provided.  Use  heat 
shrink to insulate the solder joints.

Remove the the controller board from the frame assembly.  Using a 
vice, crush the 4 indented areas of the frame where the screws to 
secure the drive mechanics are inserted.  This should be  crushed 
until it is flat.

Now  you  will need to determine the part number for  U4  on  the 
controller board.  If it is a 74LS05, you will need to replace it 
with the 7405 provided in the kit.  Do this carefully as a  great 
deal of damage can be done here.

Now,  turn  the controller board over and solder a piece  of  the 
provided 30 gauge wire from pin 34 of P5 to pin 2 of P4 (pin 1 is 
identified  by a white dot).  Now connect a section of wire  from  o73 
P5  pin  32 to pin 8 of U3.  Next connect a section of  30  gauge 
wire  from U3 pins 9 an 10 to U6 pin 17.  The first wire  is  for 
the disk present signal and the second 2 for side select.  

Reinstall  the  controller  board  in  modified  frame  assembly.  
Remove  the  system  EPROM (U10) and replace  with  the  provided 
system  EPROM.   Now,  install  the  previously  modified   power 
connector.

You will need to determine if the mechanics you have is  equipped 
with  a disk present switch.  If not, you will need to locate  an 
area suitable to mount the provided micro switch and connect  the 
normally  closed  contact  to a DC ground on the  drive  and  the 
common  contact to pin 34 on the drive plug that connects to  the 
ribbon  cable.   This  switch is adjusted so  that  a  ground  is 
applied to pin 34 when a disk is not present, and an open when  a 
disk  is in place.  It is best so that the switch  actuates  when 
you  make the last few degrees of rotation of the access  handle.  
We  have been using a hot glue gun to install them on the  drives 
that  we are doing here at Orphanware.  **NOTE** installing  this 
switch may invalidate the warranty on your drive.

You are now ready to install the drive mechanics.  Place them  in 
the  frame  and  connect the 34 pin ribbon cable  and  the  power 
connector.  (note that the power connector is keyed to go in only 
1  way).  Install the 4 screws removed earlier through  the  side 
tabs  and  tighten  gently.   The drive is  now  ready  to  test.  
Connect it as the first (and only) drive to the computer.   Power 
up  the  system  and  put in  the  disc  marked  EOS/CP/M  FORMAT 
UTILITIES.   Pull  reset  and  you  should  see  a  color  screen 
announcing that the format utilities are being loaded.  When  the 
system  turns control to you, install an unformatted disk in  the 
drive  and  follow the documentation for the format.   The  drive 
should  format  the disk through block 319.  You  can  then  load 
basic  and  check  the  new disk for blocks  left  (you  will  be 
surprised at the space).  

Next,  boot  CP/M and run the file ABP25.COM from  the  utilities 
disk.  Use the documentation from the disk to show you how to use 
it.   Next,  use the CFM.COM or FORMAT13.COM to format  a  double 
sided  CP/M disk.  When you do a STAT on the new drive  with  the 
double  sided  disk  installed, you should get  about  304K  free 
space.

IN CASE OF TROUBLE
Check  all  you  work very carefully.  If you can  not  find  the 
problem,  you  can  return  the drive along  with  45.00  +  8.80 
shipping  to Orphanware for correction.  If you have damaged  the 
controller  board, or there is evidence that improper  procedures 
were  used,  we will bill you at the rate of 25.00 per  hour  for 
repairs.  (Not to exceed 100.00 for labor) + cost of parts.   The 
drive  mechanics  will be replace free if it is  determined  that 
they have a defect in materials or workmanship (these were tested 
by FUJITSU and by Orphanware prior to you receiving them).

ADDED NOTES:

1.   On  almost  all  drives  that  you  buy,  (360  IBM  PC   XT 
compatible),  you will have to change the address jumper from  D1 

to D0.  Failure to do so will cause the drive to not work.

