IBM System/370 Operator's Reference Manual page 160

Sense (cont'd)
Byte 2
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1 2
3 4 5
6
7
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BIT 14 BIT 13
BIT 12
BIT 11 BIT 10
BIT 9
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2321
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2319
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2400
BITS 0-7 INDICATE A TRACK IS IN ERROR
16
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3203
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6
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