Burst To Index Check And Adjustment - Control Data Corporation BR8 SERIES Hardware Maintenance Manual

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6.6.1.2 Metal Carriage-Stop Assembly
This procedure must be performed whenever actuator alignment or Track 00 adjust-
ment has been performed.
a. As shown in Figure 6-6b, using a
O.
020-inch shim, adjust outer (rear) stop
clearance beyond track 00 and tighten rear screw, torque to 8-10 inch-lbs.
b. Rotate the motor shaft manually to check for interference.
6.6.2 BURST TO INDEX CHECK AND ADJUSTMENT
The Alignment Diskette is used to perform this procedure.
a. Precondition the alignment diskette (421-51 W) by allowing it to reach room
temperature for one hour.
b. Install the alignment diskette.
The Alignment Diskette is for read only. Extreme
caution should be used to assure this diskette is
not written on.
c. Seek to Track Zero, then seek to Track One and Read. (No data is recorded on
Track One. )
d. Connect Channel 1 of scope to TP3 on the PWA, Channel 2 to Index TP14 of the ·PWA.
Set up the scope as follows:
Chan 1 Volt/Div to: 0.1 volt/div
Chan 2 Volt/Di v to: 2 volt/ di v
6-19.2
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