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M2266S/H
Technical Handbook
Section 6. Troubleshooting
Component-level troubleshooting of M2266 series drives is not practical or
cost effective. This section provides information for troubleshooting to the
subassembly level only.
Begin troubleshooting by looking at the checklist below to isolate problems
external to the drive. If the problem does appear to be in the drive, then run
the self test program, which this section describes in some detail.
If you need to trace the problem on the SCSI bus, refer to Tables 6.3 and 6.4 at
the end of this section, which show the signals for both the differential and
single-ended SCSI buses.
If you cannot resolve the problem, contact the dealer or distributor who sold
the product for further assistance. If you need to contact Fujitsu Customer
Service, refer to the section Maintenance Information' for telephone
numbers and a description of the information you should prepare.
Additional information may be obtained from the Fujitsu America Bulletin
Board system.
Troubleshooting checklist
• Are the system cables in good condition and correctly connected?
• Are the connectors turned the right way and properly seated?
• Are the bus terminations correctly installed?
• Are the drive jumpers set correctly?
• Are the power supply voltage levels and ripple voltages within tolerance
as measured at the drive connector?
• Is the host adaptor correctly configured and does it pass its own
diagnostic tests?
• Has the software installation procedure been performed accurately and
completely?
Fujitsu America, Inc.
FS810125-01 . . . B
6-1
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