IBM 3270 Maintenance Manual page 704

Driver Circuit Card (Printer)
Locations 4-1400-2
Parts 7-29
E
End-of-Forms Switch (Matrix Printer)
Locations 4-1400-3
F
Fixed Disk Adapter
Locations 4-1700-2
Parts 7-7
PICs 3-1700-1
Removal 5-1700-16
Replacement 5-1700-18
Fixed Disk Drive
Locations 4-1700-1
Parts 7-25
PICs 3-1700-1
Fixed Disk Drive C
Removal 5-1700-2
Replacement 5-1700-6
Fixed Disk Drive D
Removal 5-1700-10
Replacement 5-1700-13
Forms Feed Knob (Matrix Printer)
Parts 7-31
Forms Feed Motor (Matrix Printer)
Parts 7-31
Forms Feed Rack (Matrix Printer)
Parts 7-31
Forms Tractor (Matrix Printer)
Locations 4-1400-2
Parts 7-31
X-7