JiffyDOS Installation Guide for Commodore 1571 diskdrive.pdf

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1571
INSTALLATION
Required tools:
-
Phillips screwdriver
IC
not
extractor
necessary
or
small,
flat-bladed
screwdriver.
will
Needed
for
removal
if
of
the
but
a
stock DOS ROM on the 1571
(the
small
circuit board.
screwdriver
An IC extractor is
suffice).
recommended,
However,
using
screwdriver, wrap a layer of tape
the circuit board when prying.
around the
tip to help prevent
damage
to
Procedure:
1.
2.
If a diskette is present in the 1571,
Make
are
remove it.
and the
power
switch
on your
to
sure
OFF.
that
Also
the
make
1571
sure
power
that
switch
any
computer
serial
other
peripherals
attached
the
bus are also switched OFF.
3.
4.
Unplug the 1571 power supply cord from its wall outlet.
Unplug all cables from the rear of the 1571,
including the power supply cable
and serial bus cable(s).
5.
Turn
the
1571
upside-down
and remove
the
four screws
from the bottom of the
drive as indicated in Figure 1 below.
Remove these screws
Remove these screws
Figure 1
1571 CASE SCREW REMOVAL
-1-
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8.
Once
the
power
supply
has
been
removed,
locate
the
DOS
ROM
on
the
1571
circuit board using the diagram in Figure 3 below.
DOS ROM
Figure 3
1571 DOS ROM
9.
Carefully
remove
the
1571 DOS
ROM from its
socket using the IC extractor or
small,
flat-bladed
screwdriver.
Alternate
lifting
the
ROM
from each
end/
raising it from its socket a little at a time.
care not
If using a screwdriver,
take
to damage the circuit board or any of the circuit board components
while prying.
10. Remove
the
JiffyDOS ROM labeled 1571
from its
packing
(see Figure 4 below).
Put the stock 1571 DOS ROM back into the packing for safe keeping.
mmnnfimnnnrtfir-inr-i
JiffyDOS
V5.0(c)1988
CMD,Inc.
1571
Figure 4
JIFFXDOS 1571 DOS ROM
-3-
11.
..
Inspect
the
JiffyDOS
1571
ROM
carefully.
If
you
observe
any
bent
pins,
carefully straighten them with a pair of tweezers.
12.
"Test fit- the JiffyDOS 1571 ROM on top of the empty DOS ROM socket.
VERY IMPORTANT
MAKE
SURE THAT THE NOTCH ON THE JIFFYDOS
ROM IS FACING THE FRONT OF THE DISK DRIVE
AS SHOWN IN FIGURE 5 BELOW.
Notch
Figure 5
NOTCH ORIENTATION
13. With all pins on the JiffyDOS ROM properly aligned with the socket, and with
the ROM notch facing the front of the disk drive, carefully press the 1571
ROM into the socket using finger pressure until it is fully seated.
.14. Replace the power supply and secure it with the four screws removed earlier.
15. Reconnect the power supply ground strap to the 1571 drive mechanism frame.
-4-
16.
Reconnect the circuit board power connector to the circuit board.
IMPORTANT
The
BLACK
wire
on
the
connector
should
face the outside of the drive,
and should
correspond
with
Pin
1
on
the
circuit
board header.
17.
Replace the 1571
top cover/
turn the drive over,
and replace the four screws
which hold the cover in place.
18.
Reconnect the AC power supply cable to the rear of the 1571.
19.
20.
Plug the AC power supply cable into a working outlet.
Connect
the serial bus
cable between the
1571 and your computer.
Installation Checkout Procedure:
NOTE:
Some
of
the
steps
in the
following
1571
installation
checkout
procedure
require the use of a JiffyDOS-equipped computer.
1.
Switch the
1571 ON.
The green activity light on the front of the 1571 should
come
on
immediately
as
power
is
switched onf
stay
on
for
about
one
second,
and then shut off as
IF
THE ACTIVITY
it normally does upon power-up.
STAYS
ON ^OR BLINKS
REPEATEDLY,
IMMEDIATELY SWITCH THE
LIGHT
1571 OFF.
THEN FOLLOW THE STEPS OUTLINED BELOW.
la.
Recheck all cable connections to the 1571.
bus
If
Make sure that the serial
Make
try
cable
any
and power supply cable have been connected properly.
errors
have
been
made/-
correct
the
errors
and
sure that the AC power cord has been plugged into a working outlet.
cabling
powering up the 1571
again.
lb.
If
the
problem
is
not
with
the
cabling,
disassemble
the
1571
according to the procedure you used earlier.
Remove the JiffyDOS ROM
is
oriented correctly,
from its
Steps
socket and then
Make
sure
reinstall
that
the
it according to the procedure in
ROM notch
11-13.
that there are no bent pins, and that the ROM is seated snugly in its
socket.
Once the JiffyDOS ROM has been reinstalled and the drive has
been reassembled,
try powering up the 1571 again.
lc.
If Steps
stock DOS
that
the
powering
la and lb both fail,
remove the JiffyDOS ROM and reinstall
ROM.
Make sure
Try
return your
the stock 1571 DOS ROM.
notch
up
the
Follow the same procedure for installing the
stock
DOS
If
ROM as you did for installing the JiffyDOS
on
tfie
ROM
it
is
oriented
up
correctly.
1571
again.
powers
properly,
JiffyDOS
warranty.
1571
If
ROM
your
to
Creative
drive
Micro
does
Designs
for
replacement
under
disk
not power up properly,
seek the
assistance of a qualified technician.
-5-

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