Table of Contents
Advertisement
STAItT
SWITCH
SPINDLE
.. OTOIt
(IC5)
.-J
I
~~-----------------------------------------------
I
I
I
FIRST SEEK INTERLOCK MOTOR
<i>
~~--15--.-C-=4~
__________________________________________________ __
I
I
I
SPINDLE
SPEED
(IC2)
(SPEED> 5000 ItP .. )
I
__ -t..;...._<D .......
F
APPROX
10 SiC
LOAD
LATCH
( I I " )
_____ ---.II
~
FOItWAItO CARRIAGE MOTION
___________
~~d5~
I
I
HEADS LOADED SWITCH ( ... S I)
ODD
D1
liT
TItACKS
ffWD
EDT
ENAILE
(A3IS)
NO SERYO TRACX
DELAY (A210)
(;)
ZOO MS .. AX
-----ell
IIEYERSE EDT
FF
EYEN
01 IITS
DETECTOJt
L
_.....;:.... _ _ _ _ _ _ _ _
"NE SERVO SIGNAL (A38.)
FINE FF
I
K 30'"
ON
CYLINDEIt DELAY
IX 3001
ON
CYLINDER
NOTES:
CD
RETRACT
RELAY
ICS
P.CICED
WHEN
KZ PICKS.
(lJ
LOAD
FF
CAUSES
LOAD GATE
(AZ9Q3)
TO APPLY
+
(SEEK FWD
J
VOLTAGE
TO VOICE
COIL
SU .... ING
A .. P\..
COARS£
AHO FINE GATES
INHIBITED.
CYLINDER REGISTER SET TO ZERO
AND
DIFFERENCE COUNTER
SET
TO
MAXIMUM
(10231.
~
MOTION
TO
7 IPS
PROvlOED BY
LOAD
GATE UNTIL ODD
01
IITS SET
REVERSE
EDT
FF.
"OTION
CONTROL THEN
PROVIDED
IY
FINE
POSJ.TION
SIGHAL.
~
Dt alTS MUST
IE
DETECTED
WITHIN
200 MS
OR PACK UNSAFE
IS
SIT. HEADS UNLOAD. SELECT LOCK MUST BE CLEARED BEFORE
ANOTHER
LOAD
ATTE .. PT CAN aE
MADE.
IN SIC 33 AND AaovE. INTERLOCK MOTOR IS REPLACED BY CIRCUIT ON _SAV CARD
Figure 3-22.
First Seek Timing Diagram
83318200
E
I
~~I---------------
I
[TRACIC 0
I=-
1.75
MS
==f
1M
tOO:.
3-51
Advertisement
Table of Contents
