Commodore 1581 - Diskette Directory; Selective Directories

1581 ALIGNMENT/REPAIR TEST
VERSION 1.5.1
1. Set Both Channels To AC Scale
2. Set Both Channels To 50 MV/DIV
3. Invert Channel 2
4. Differentially Add Both Channels
5. Set Sweep To 20 MS/DIV
6. Set Trigger To Auto Mode
7. Remove any Diskette Installed in the Drive
8. Make Sure Drive Power Is OFF
* Press SPACE - Dis-Assembly & Setup
* Press RETURN - Return To Menu
Displays Alignment/Repair Test Main Menu
1. DisConnect Power Cable and Serial Cable
2. Remove the Three (3) Screws from the Bottom Case and Remove
the Top Case from the unit
3. Remove the Drive FacePlate and Set it Beside the Unit
4. Remove the Four (4) Drive Mounting Screws
5. Remove the Two (2) Shield Screws and Remove the Drive Shield
6. Remove the Drive Assembly and Set it on its Side
7. * Connect Scope Probes As Follows ....
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l Probe 1 -- Pin 1 -= Test Point TPl | Probe 2 -- Pin 3 -- Test Point TPl |
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8. Connect Power Cable and Serial Cable
9. Turn Drive Power ON
10. Insert 135 TPI Alignment Diskette
Commodore Part Number - 314854-03
* Press SPACE - Begin Radial Alignment
* Press RETURN - Return to Menu
Displays Alignment/Repair Main Menu
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