Apple Disk II Technical Procedures

More documents

Recommendations

Info

E. REPLACING THE HEAD LOAD BUTTONThe head load button is a small round pad of white felt, mounted in thehead load arm (Fig. 9, #1), that holds the diskette surface against theread-write head. The button should sit just above the center of theread-write head, with its surface parallel to the surface of the head.When the button is severely worn, it will look like a cylinder skewedto the right (as viewed from the front). At that point it should bereplaced.1. Lift up the Head Load Arm (Figure 9, #1), squeeze the top part ofthe load button with small needle-nose pliers, and let the buttondrop down.2, Install a new load button by inserting it into the holder andpushing up until it snaps into place.disk ][ take-apart rev. 8-31-82 page 1.10
Disk ][ Technical ProceduresSection 2AdjustmentsContents:Collet Hub Adjustment 2. 3Drive Door Adjustment. 2. 5Diskette Stop Guide Adjustment 2.7Drive Speed Adjustment — The D-Speed Test 2.8Write-Protect Switch Adjustment 2. 11disk ][ adjustments rev. 8-31-82 page 2.1
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: D. REPLACING THE COLLET HUBRemoving
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 25: Disk Drive Technical ProceduresSect
Page 28 and 29: B. AMPLITUDE TESTThe amplitude test
Page 30 and 31: 13. After the test signal has been
Page 32 and 33: Disk Safety Check5. Set the oscillo
Page 34 and 35: 16. Turn the oscilloscope's trigger
Page 36 and 37: The Test:7. Boot the Calibration (o
Page 38 and 39: E. HEAD RADIAL ADJUSTMENTThe Head R
Page 40 and 41: The Test:13. Change the oscilloscop
Page 42 and 43: ALPS Drive adjustment:23. Adjust th
Page 44 and 45: F. COMPARATOR OFFSET ADJUSTMENT:The
Page 46 and 47: 13. After the test signal has been
Page 49: Disk ][ Technical ProceduresSection
Page 53: Disk ][ Technical ProceduresSection
Page 56 and 57: Disk ][ Analog Board rev. Jun 84 Pa
Page 62 and 63:
Disk ][ Analog Card rev. Jun 84 Pag
Page 64 and 65:
Disk ][ Analog Card rev. Jun 84 Pag
show all

Apple Disk II Technical Procedures

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?