AT&T PC 6300 - Page 480

MAINTENANCE
ERROR NO.
PROBABLE CAUSE
MODULE
908 Data Pattern Test Failed
1. HDU Controller
2. HDU*
909 •
Funnel Test Failed
1. HDU Controller
2. HDU*
910
Aging Test Failed
1. HDU Controller
2. HDU*
911 Low-Level Format Test
Failed
1. HDU Controller
2. HDU*
912 Write and Verify Surface Failed
(This routine determines the
bad block list.)
THIS ERROR IS DETECTED
ONLY FOR SYSTEM
TEST PACKAGE.
1. HDU Controller
2. HDU*
930 Too Many Bad Blocks
1. HDU Controller
2. HDU*
931 Bad Block Determination
Test Failed
1. HDU Controller
2. HDU*
932 Track 00, OL 02, or 03 bad
1. HDU*
* If the HDUs available disk space is less than the nominal value
(10 MBs for 10 Meg HDUs and 20 MBs for 20 Meg HDUs),
it should be replaced.
Figure 5-34. HDU Troubleshooting Chart (Sheet 2 of 2)
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0
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D
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5-102
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