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4-3-3 Write Circuit Check
c;AR1J
d,,,
-
data input to pin 22
on CN-4?
No
_ _ _ _ _ _ _
~he
interface of
~he
host computer or j h '
~,
~
~_
cable is defective,
-
-
Is pin
24,
write gate on CN-4 at
low level?
No
Replace IC5. I
Is pin 28
y"
• We' " pm""
' ' ' ; j
~4"IOW
• Check the Notch
level?
I
of media.
No
Is any of
No
the DS signal (pin 6,10,
12or14)al
low level?
y"
y"
Is short
No
Connect the short
~in
on SWl correctly
pin to the OS
selected?
signal terminal.
Write
Yes
data applied to pin'
1 ::~':C'------1
oflC5?
No
~
Do the levels
of Hand L
appear
at 8th pin of IC5 alternately
with those at
9th pin?
Is pin 6
No
on lC11 at low
>---~-
---------_.,
level?
No
Replace Ie,
o.
C-43
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