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Commodore 1541-II Betriebsanweisung Seite 9

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Seitenansicht 8
Commodore
Personal
Computer
Single
Fig 3.A Floppy Disc Hookup
Personal
Computer
Twin
Fig
3.8
Floppy Disc Hookup
Power
supply
AC
Serial Cable
Power
supply
8
TROUBLESHOOTING GUIDE
Symptom
Red
indicator
light
on the 1541 not on
Green
error
light
on
anve nashes
continously on
power-up, before
any disk commands
.have been given
Cause
Disk drive not
turned on
Power
supply
not
plugged
in
Power
off
to
wall outlet
The disk drive
is
failing its power-on
self-test
Remedy
Make sure power switch
is in the
"on"
position
Check
both
cords
of
power
cable
to
be sure they
are
fully inserted
Replace fuse
or
reset
circuit breaker
in
house
Tum
the system·
off
for
a minute and
try again.
lf
it repeats, try again
with the serial bus
disconnected.
If
it
still repeats , call your
dealer.
If
unplugging
the serial cable made a
difference, check the
cable for proper
connection at both ends.
This can also be caused
by some cartridges on
the C-64 and always by
a I
6K
cartridge on the
VIC
20. Remove the
cartridge and power-up
the disk drive again to
determine where the
problem is.
(The principle behind unplugging the serial cable
is
" divide and
conquer."
The drive can do its
power-on test even when not connected to a computer.
If
it succeeds that way, then the problem
is
probably in the cable
or
the rest
of
the system, not the
1541
.)
9
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