Power-On Operation Sequence - Fujitsu MPB3021AT Product Manual

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

Power-on operation sequence

C141-E045-02EN 4 - 7