Maintenance and Service Guide |
Monitor Alignment
The Monitor Alignment selection allows you to check the alignment and intensity of the video display unit.
Diskette Drive
The Diskette Drive test verifies that the diskette drive, diskette drive controller, and associated cables are operating properly.
The following selections are available:
□Write/Read/Compare
□Random Seek
□Verify Diskette
□Diskette Speed
□Diskette Change Line
□Format a Diskette (for diagnostic use only)
NOTE: During certain tests, you may be asked to insert a blank diskette that has been formatted for diagnostics. To fully test a diskette drive, use the highest capac- ity media intended for the drive. The diskette must not be write protected.
The following paragraphs describe these selec- tions.
Write/Read/Compare
The Write/Read/Compare selection verifies that the diskette drive subsystem writes, reads, and compares data patterns, that the diskette drive controller properly resets, and that the diskette drive controller buffers are valid.
Random Seek
The Random Seek selection verifies that the diskette drive and the diskette drive controller randomly seek tracks across the diskette.
Verify Diskette
The Verify Diskette selection verifies the dis- kette drive by reading the contents of the entire diskette.
Diskette Speed
The Diskette Speed selection verifies that the dis- kette drive motor is spinning within the proper speed range.
