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FD-3
FLOWCHART
Are connectors
correctly
plugged?
NO
..
Plug
correctly
r>
Medium may
be
faulty
YES
NO
^
Is
short bar
setting correctly?
Set normally
>
YES
YES
YES
sk_
Does
it
read
if
changed
to
another
medium?
NO
Is
alignment
OK?
YES
Is
spindle
speed
OK?
YES
1_
Is
index
signal
sent
correctly?
YES
XL.
Is
TRKOO OK?
YES
Is
motor
start
time appropriate?
YES
Is
medium
rotating?
NO-
J1L.
Does
cariage
operate
properly?
NO.
Check
step
motor
and
circuit
head
driving
mechanism
operating step
motor.
YES
Does
read
waveform
show
after
adjustment?
YES
Adjustment,
NO
NOi
V
NO
V
NO
Read
circuit
may
have
problems.
Change MC3470AP.
Change
printed
circuit
board.
V
NO
V
Over-
speeding?
YES
Check
motor
control printed
circuit
board.
Is
servo cord
disconnected
from motor?
V
Is
index sent?
YES
Index
sensor
is
faulty
Adjust
NO
V
-NO
Change
motor
alignment
3l
Read
circuit
has
a
problem.
Exchange
MC3470AP.
Change
printer
circuit
board.
XL.
Operating
normally?
Possibility
of
or
head
cord
trouble.
Adjust
X-
Adjust
V
Can
it
be
adjusted?
V
NO
NO
XL
Is
power
fed?
NO
Check power
YES
A
Does
DC
motor
operate?
(Apply 12V)
NO^
Change
DC
motor
*
YES
J/
NO^
Are cords
and
wires
correctly
connected?
Correct
incorrect
wiring.
YES
-
YES
I
OK
Is
motor
ON
signal
sent?
NO.
Check
signal
on
system
side
YES
*_
Possibility
of circuit
part
faults.
Adjust
centering motor-control
printed
circuit
board.
W
-YES-
OK
Drive
has problem
(Medium
slip
or
other
reason).
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