Commodore 1581 - Basic Hints; Save Command

1581 ALIGNMENT/REPAIR TEST
VERSION 1.5.1
1. Press (+) or (-) until the Screen Displays
Voltage Level = 2.5 VDC and Current Track = 2
2. Loosen the Zero Track Screw and Slide the Zero Track Sensor
Until the Scope Reading = 2.5 VDC
3. Tighten the Zero Track Screw
* The Scope Reading Must Stay at 2.5 VDC After The Zero Track
Screw is Tightened. If the Reading is OFF After the Zero
Track Screw is Tightened -- RE-ADJUST ZERO TRACK SENSOR
4. Press SPACE - Re-Check Zero Track
* If the Zero Track Test Fails ....
Repeat Steps 1 thru 3 until Adjustment is Correct
* If the Zero Stop Test Passes ....
* Press RETURN - Return To Menu
Displays Alignment/Repair Main Menu
ALIGNMENT/REPAIR TEST OPTION FOUR - STEPPER MOTOR SLEW
STEPPER MOTOR SLEW TEST OPTION MENU
* Press (1) - Step To Track 1
* Press (0) - Step To Track 80
* Press RETURN - Return to Menu
Displays Alignment/Repair Test Main Menu
STEPPER MOTOR SLEW TEST OPTION ONE - STEP HEAD TO TRACK 1
STEPPER MOTOR SLEW TEST OPTION TWO - STEP HEAD TO TRACK 80
The Stepper Motor Slew Test checks proper operation of the Stepper
Motor by Slewing the Read/Write Head between Track 1 and Track 80,
(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
* Press RETURN - Return To Menu
Displays Alignment/Repair Main Menu
Page 1-21