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Functional Description
7936 and 7937
FAIL-"FH
CONTROLLER POWER ON(2)
START TESTING ON 1.0. MAINTENANCE TRACK, HEAD 0, FIRST SELF-TEST SECTOR
ATTEMPT READ ING A SECTOR WI THOUT ANY DATA ERRORS --.. KEEP READ INO UNT I L
ALL SECTORS ON BOTH MNT. TRACK HAVE BEEN TRIED. STOPPING ON THE
FIRST SuCCESSFUL READ
FAIL 'ALREADY
LOOGED (SEE
NOTE BELOW)
YES
WRITE BAD DATA ON THIS SAME
ADDRESS THEN READ IT BACK
NO
REPA IR THE BLOWN AWAY SECTOR __.. SET
WHOH
ON
THE
DNA
THEN SE T A
WR
I TE FROM THE
DMA
EXECUTION BUFFER
F'AIL-,20H
F'AIL·,21H
WRI TE PROTECT . . _ _ _ _ _ _ _ _ _ YE,;;.,S::..",c
FAIL.,22H
THE
TEST SHOULD
SET WRI TE
">~---------
.........
PROTECT __..
NO
BEGIN RECOVERING THE SPARE TABLE
~
IF ANY
HEADER CYLINDER VALUE IS > THE PHYSICAL' OF
CYLINDERS
(1410)
OR IF NONE
OF
THE SECTORS
ON ANY TRACK WERE vERIFIABLE:
FAIL-I17H
RESET SEEK COUNTER__.. FAULT
CLASS."RUNTIME" --.. F'AIL.'25H .....
~;..;.;.;.;.;....;.;;....c
S7t37A11
"POWER ON"
NOTE: This check is made on nearly every
'ault check, so it is left out from
here on
FIgure 5-11.
FAI L.,2.3H
5-47
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