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2 . 8 . 1
MECHANICAL FA U L TS
Diskette mechanical faults occur on the diskette i t s e l f or on the diskette
drive .
Use the symptoms l i s ted in the fol lowing chart to isolate a fault
to one or more CRUs .
in other Sections of the manual to narrow the fault to one CRU .
number at the bottom of each column in the Symptom chart to reference the
Cause/So lution .
The bu l lets in the chart s ignify that the symptom l is t ed
is true .
SYMPTOM(S)
Damaged diskette
Diskette drive door wi l l not open
Diskette drive is not turning
Fans are not running
CAUS E/SOLUTION
1
diskette or mal functioning diskette drive .
Defective
diskette .
I f damaged again, replace diskette drive .
2
Mal functioning p l anar board or mal functioning diskette drive .
drive .
I f drive door opens , replace p l anar board .
diskette drive .
Lack o f power or defective diskette drive assembly . Check for defec
3
tive fus e . Check for defective bas e .
See Chapter 4 , "Cable Checks . "
drive power .
replace diskette drive assemb l y .
4
Defective diskette drive or diskette drive assembly .
"Diskette and D i s k Checks . "
5
Defective diskette drive assembly . Replace diskette drive assemb ly .
Not e :
Make certain of switch drive settings , see IBM Insta l l ing and
Where necess ary , you are re ferred to optional checks
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I f not , replace
Check for presence o f diskette
I f power is present ,
See Section 3 . 8 ,
Fau lt Detection 2 - 16
Use the
Try another
Unplug
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