Atari PC Owner's Manual page 15

To switch on your PC system, follow these steps:
1. Switch on your monitor and any other peripherals you've con­
nected. Then switch on your computer (always switch on the
computer last). The power indicator light comes on.
2. Make sure the drive latch is flipped up. Hold MS-DOS Disk 1 label
side up with the write-protect notch on the left. Gently slide the
disk into the drive opening until it's completely inside the drive.
Flip the drive latch down, locking the disk in place.
Drive Latch
(Up Position)
3. The computer begins retrieving data from the disk. When the
computer is finished, the operating system MS-DOS prompts you
for the date on the monitor screen:
Current date is Tue 1-01-1980
Enter nEiw date (mm-dd-yy):
Note: If the date prompt doesn't appear, check that your monitor is
switched on with the brightness properly adjusted, and that MS-DOS
Disk 1 is correctly inserted with the drive latch flipped down. If you still
don't see a date prompt, switch off the system and make sure all cable
connections are correct and secure. If the problem continues when
you switch on the system, see Appendix A: System Maintenance.
4. Type the date from the keyboard in the form requested on screen,
using numbers separated by hyphens H or slashes (/). Use the
[Backspace] key ([<-1) to erase mistakes.
9
Power Indicator Light