Apple Disk II Technical Procedures

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Disk Drive Technical ProceduresSection 3CalibrationContents:General. (READ FIRST! ) 3.3Amplitude Test. 3.4Azimuth Test 3.7Carriage Limiter Adjustment. 3.11Head Radial Adjustment .... 3.14Comparator Offset Adjustment 3.20Disk Drive Calibration rev. 09/10/82 page 3.1
Page 1: DISK ][ TECHNICAL PROCEDURESTABLE O
Page 5 and 6: A. REMOVING THE DISK DRIVE COVER1.
Page 7 and 8: B. REPLACING THE DISK DRIVE CABLERe
Page 9 and 10: C. REPLACING THE ANALOG CARDRemovin
Page 11 and 12: D. REPLACING THE COLLET HUBRemoving
Page 13 and 14: Disk ][ Technical ProceduresSection
Page 15 and 16: A. COLLET HUB ADJUSTMENTIf the disk
Page 17: B. DRIVE DOOR ADJUSTMENTWhen the di
Page 20 and 21: D. DRIVE SPEED ADJUSTMENT — THE D
Page 22 and 23: disk ][ adjustments rev. 8-31-82 pa
Page 27 and 28: A. GENERALBefore doing any of the p
Page 29 and 30: 7. Connect the probe tip to TP8 and
Page 31 and 32: C. AZIMUTH TESTThe azimuth test sho
Page 33 and 34: The Test:12. Change the oscilloscop
Page 35 and 36: D. CARRIAGE LIMITER ADJUSTMENTThe C
Page 37 and 38: The Adjustment:12. Loosen the adjus
Page 39 and 40: Disk Safety Check6. Set the oscillo
Page 41 and 42: 18. If the drive needs adjustment,
Page 43 and 44: SHUGART drive adjustment:23. Rotate
Page 45 and 46: 7. Connect the probe tip to TP5 and
Page 47: 15. Change the oscilloscope's sweep
Page 51: Disk ][ Troubleshooting ChartSympto
Page 55 and 56: IntroductionThis document contains
Page 57 and 58: System SetupFor the analog card to
Page 59 and 60: Drive 1 Will Not BootIt is possible
Page 61 and 62: 6. Press the ESCAPE key to return t
Page 63 and 64: SYMPTOM IC LOCATIONHead does not mo
Page 65: 5. Type LOCK HELLO and press to re

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