Figure 4.3 Power-On Operation Sequence - Fujitsu MHW2120BK Maintenance Manual

Power-on
a) SATA I/F Initialization
b) Self-diagnosis 1
- MPU bus test
- Internal register
write/read test
- Work RAM write/read
test
The spindle motor starts.
Self-diagnosis 2
c)
- Data buffer write/read
test
Confirming spindle motor
d)
speed
Load the head assembly
C141-E261
Start

Figure 4.3 Power-on operation sequence

4.4 Power-on Sequence
e)
Initial on-track and read
out of system information
f)
Drive ready state
(command waiting state)
g)
Execute self-calibration
End
4-7