Supplemental Tools - North Star DIMENSION Service Manual

DIAGNOSTICS
Supplemental Tools
Supplemental Two procedures in this chapter describe fixed disk drive
Tools tests. Although fixed disk drives can be tested when
mounted in the central module, occasional testing of an
unmounted drive is useful. To facilitate this process, three
fixed disk drive extension cables are available:
* DC power extension cable; North Star part number 03898
* Signal extension cable; North Star part number 03899
* Control extension cable; North Star part number 03900
A procedure for attaching the extension cables is found in
this chapter.
Service North Star Computers Inc. strongly recommends that service
Precaution technicians always park fixed disk drive heads before
turning off central module power. We also recommend that
technicians pass this precaution along to their customers.
Parking the heads ensures that they will land on a safe,
unwritten section of the disk drive platters, thus protecting
the storage media.
There are three methods for parking the heads.
t`r Using the DISKLOCK utility if the system is running the
DOS operating system
Using the DOWN utility if the system is running the
NetWare operating system
Using the PARK FIXED DISK DRIVE HEADS option on
Service Diskette #2
3-2 DIMENSION Service Manual