Service manual

DOUBLE-DENSITY DISK CONTROLLER 1
4
--7
o 4. 'Type the letter B and press the RETURN key. The terminal will display:
H: Boot
You will hear some clicking noises from the disk drive. This is normal. You will
hear such noises whenever the Computer is reading from or writing to the
diskette. The clicks will continue for about 15 seconds. Then the terminal will
display the diagnostic program's main menu, as follows:
Zenith Data Systems Z-37 Support System
Enter the number corresponding to the type of program
you wish to run.
1. Disk Controller Checkout
2. General Drive/Controller Diagnostic
3. Detailed Drive Diagnostic
Your Choice ->
From this main menu, you can select any diagnostic or conversion utility. To select an
option, simply type the number which corresponds to the option. When you are finished
running any of these options, the system will return you to this diagnostic program's
main menu.
Whenever
the main menu is displayed, you can safely remove all diskettes and turn off
the power.