Specifications

RA7x/SA7x Pocket Reference Guide 15
RA7x Electronics Block Diagrams
Figures 7 and 8 are electronics block diagrams for RA70
and RA71-RA73 disk drives.
Figure 7 RA70 Electronics—Simplified Block Diagram
Power J4
Port B J2
Port A J1
Remote
OCP J3
Local OCP
I/O Logic
Read/Write
Servo/Spindle
HDA
Logic Read/Write Module
Servo/Spindle Module
COM-R082
Figure 8 RA71-RA73 Electronics—Simplified Block
Diagram
Power J4
Port B J2
Port A J1
Remote
OCP J3
Local OCP
I/O Logic
Read/Write
Servo/Spindle
HDA
Electronic Control Module
COM-R081