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C141-E090-01EN 4 - 7
c)
b)
a)
Release heads from
actuator lock
Confirming spindle motor
speed
Self-diagnosis 2
• Data buffer write/read
test
The spindle motor starts.
Self-diagnosis 1
• MPU bus test
• Inner register
write/read test
• Work RAM write/read
test
StartPower on
Drive ready state
(command waiting state)
Execute self-calibration
Initial on-track and read
out of system information
f)
e)
d)
End
Figure 4.3 Power-on operation sequence