Commodore 1571 - Page 27

1571/128D ALIGNMENT/REPAIR TEST
VERSION 1.2.1
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| 1571/C128D RADIAL ALIGNMENT CHECK — LOWER HEAD |
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CAT EYES SHOULD BE VISIBLE AND WITHIN 10% AMPLITUDE OF EACH OTHER
* The Peak-To-Peak Level MUST be at least 200 MV
1. CAT EYES ARE NOT VISIBLE
* Press (+) - Step the Read/Write Head IN
* Press (-) - Step the Read/Write Head OUT
2. CAT EYES ARE NOT VISIBLE WITHIN TWO (2) STEPS EITHER WAY
* Refer to Upper Head Alignment Check
3. CAT EYES ARE VISIBLE BUT NOT WITHIN 10% AMPLITUDE OF EACH OTHER
* Refer to Radial Alignment Procedures - Page 1-18
4. CAT EYES ARE VISIBLE AND WITHIN 10% AMPLITUDE OF EACH OTHER
* Refer to Upper Head Alignment Check
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| 1571/C128D RADIAL ALIGNMENT CHECK — UPPER HEAD |
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1. Select Option Four - Upper Head Alignment
2. Remove the 48 TPI Alignment Diskette and Re-Insert it Upside Down
3. Press SPACE - Step Head to Track 13
CAT EYES SHOULD BE VISIBLE AND WITHIN 10% AMPLITUDE OF EACH OTHER
* The Peak-To-Peak Level MUST be at least 200 MV
4. CAT EYES ARE NOT VISIBLE
* Press (+) - Step the Read/Write Head IN
* Press (-) - Step the Read/Write Head OUT
5. CAT EYES ARE NOT VISIBLE WITHIN TWO (2) STEPS EITHER WAY
BUT WERE VISIBLE ON THE LOWER HEAD ALIGNMENT CHECK
FAILURE - DEFECTIVE DRIVE ASSEMBLY - READ/WRITE HEAD
DEFECTIVE CONTROL OR READ/WRITE LOGIC
6. CAT EYES ARE NOT VISIBLE WITHIN TWO (2) STEPS EITHER WAY
AND WERE NOT VISIBLE ON THE LOWER HEAD ALIGNMENT CHECK
FAILURE - DEFECTIVE ALIGNMENT DISKETTE
DEFECTIVE DRIVE ASSEMBLY - READ/WRITE HEAD
DEFECTIVE CONTROL OR READ/WRITE LOGIC
7. CAT EYES ARE VISIBLE BUT NOT WITHIN 10% AMPLITUDE OF EACH OTHER
* Refer to Radial Alignment Procedures - Page 1-18
8. CAT EYES ARE VISIBLE AND WITHIN 10% AMPLITUDE OF EACH OTHER
* DRIVE ALIGNMENT IS OK !!! OK !!! OK !!I OK !!! OK !!!
9. Press RETURN - Return To Menu
Displays Alignment/Repair Main Menu
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