Mlcroprocessor/lmernal
Memory
Test: Failure Is Indicated
by
one
flash and an addltlonal sense code (byte one) of
81H.
Microprocessor
ROM
Checksum
Test: Failure Is Indicated by two
flashes and an addltlonal sense code of
82H.
Controller
Chip
Test: Failure to lnltlallze correctly
Is
Indicated
by
three
flashes and an
addltlonal sense code of
83H.
controller
Program
RAM Test: Failure
Is
Indicated
by
four flashes an
an
addltlonal sense code of
85H.
Data
Buffer
RAM Test: Failure Is Indicated by five flashes and an addi-
tional
sense code of
86H.
Splndle
Speed
Test:
If the drive Is unable
to
reach and maintain correct
spindle speed,
six flashes will be returned with an additional sense code
Of
87H.
Read
Sector
ID Mark: If the controller
Is
unable
to
find and read an ID
mark for any sector, seven flashes are returned with an addltlonal sense
codeof88H.
Read
Operating
System
Microcode
From Drive: If the controller
Is
un-
able
to
read the operating system from the drive, eight flashes are
returned with an addltlonal sense code of
88H.
If the controller reads the
operating system
records, but determines that they are Invalid, nine
flashes are returned with an additional sense code of
88H.
2.
7 Incoming Inspection
The ST125N/138N/157N support a self-test routine that Seagate recom-
mends for Incoming inspection. This test may be run after the unit has
sucessfully passed the power-on diagnostics.
18
ST125N/138N/157N Product
Manual, Rev. C
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