1571/128D ALIGNMENT/REPAIR TEST
VERSION 1.2.1
ALIGNMENT/REPAIR TEST OPTION FOUR - STEPPER MOTOR SLEW
STEPPER MOTOR SLEW TEST OPTION MENU
* Press (0) - Step Head Tracks 1-35
* Press RETURN - Return to Menu
Displays Alignment/Repair Test Main Menu
STEPPER MOTOR SLEW TEST OPTION ONE - STEP HEAD TRACKS 1-35
The Stepper Motor Slew Test checks proper operation of the Stepper
Motor by Slewing the Read/Write Head between Track 1 and Track 35,
(Inner and Outer Tracks). The Read/Write Head should move smoothly
and freely with no sticking or binding of the Stepper Mechanism.
FAILURE - DEFECTIVE DRIVE ASSEMBLY (STEPPER MOTOR)
DEFECTIVE STEPPER MOTOR CONTROL LOGIC
ALIGNMENT/REPAIR TEST OPTION FIVE - STEPPER MOTOR LOGIC
STEPPER MOTOR LOGIC TEST OPTIONS
* Press (+) - Step Head IN
* Press (-) - Step Head OUT
* Press RETURN - Return to Menu
Displays Alignment/Repair Main Menu
STEPPER MOTOR LOGIC OPTION ONE - STEP READ/WRITE HEAD IN
STEPPER MOTOR LOGIC OPTION TWO - STEP READ/WRITE HEAD OUT
These options will Step the Read/Write Head In/Out one Track at a time.
When the Head is Stepped, the Status of the STP 0 and STP 1 Signals
(0 or 1) , will be displayed. Using a Scope or Meter, verify the Measured
Signal with the Expected Signal from the Stepper Motor Control Logic Chart.
ANY INCORRECT SIGNAL IS NORMALLY AN INDICATION OF A DEFECTIVE COMPONENT
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