AMSTRAD PC1512 - Page 5

±
Is termination
resistor correctly
attached?
NO Mount
correctly
YES
1_
Is
environment
condition appropriate?
NO Set up environmental
condition
appropriately
YES
Are errors
caused
after changing
to
another medium?
NO
Medium may
be
faulty
YES
Is a
very
large noise source
present?
YES Remove noise
source
NO
Is
tlkere
&
Is there
sufficient head
head
pressure
NO
NO
Change head
YES
Are
errors
caused on
inner
circumference of
tracks?
NO
YES
Is
spindle
speed
OK?
NO
YES
Is index
signal correctly
sent?
NO
Adjustment
YES
\l/
Is
azimuth
azimuth
NO
Tilting of guide shafts
due to shock,
or heads
are
defective
YES
Is
seek
operation
normal?
NO
>
Check step
motor and
driving
mechanism
YES
Is time
margin
of inner circumference
tracks sufficient?
YES
A
NO
YES
^_
^L
Change
the printed
circuit board. Change
the head if problem
is not solved.
Is
power NO
Check
power
ripple noise
correctly
fed?
Check
data
separator
on system side
YES
v
Check circuit
(Read
errors are
caused)