Toshiba TECRA A9 Series - Problems when you turn on the computer

3 Tests and Diagnostics 3.21 Head Cleaning
3-50 [CONFIDENTIAL] TECRA A9(S5/P5/S200) Maintenance Manual (960-633)
3.21 Head Cleaning
3.21.1 Function Description
This function cleans the heads in the FDD by executing a series of head load/seek and read
operations. A cleaning kit is necessary to perform this program.
3.21.2 Operations
1. Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the
following messages:
DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX
Mount cleaning disk(s) on drive(s).
Press any key when ready.
2. Remove the Diagnostics Disk from the FDD, then insert the cleaning disk and press
Enter.
3. When the “cleaning start” message appears, the FDD head cleaning has begun.
4. The display automatically returns to the DIAGNOSTIC MENU when the program is
completed.