HP 7936 Support Manual page 78

Disc drives
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Functional Description
7936 and 7937
BUMP SEEK
START
FSEN-O
~
COMPLEMENT LSB
~
ACCEL (90us)
~
COAST (768us)
~
oECEL (70us)
SETTLE
J--------t~
STOP TC COUNTER ____ FSEN-1
~
ACQUIR-O
'------"
SET
3m.
T
.0.
~
ONCE OFTF-O. MAKE SURE
I T IS "STABLE" FOR AT LEAST 670us
~
IF
SSS-1 ALSO LOOK FOR AGCF AND STE
.--------..--
YES
>,-------4 ..
QSTAT-1 STATUS-21----....
(MASK IF SSS-O)
STE
STATUS-J
RETURN
STATUS-6
ABORT
S7tJ7,.,e
Figure 5-9. Bump Seek Flowe art
5-44

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7937

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