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CHAPTER 4: Operation
Table 4-1. LED Codes.
••-•—••-•—
Computer is sending data
•—•—•—
Serial device is connected;
computer is not sending data
••—••—
Both serial and parallel devices are
connected; computer is not sending data
•-•—•-•—
Printer not ready, data held in buffer
••••—••••
Computer ignoring flow control, data lost
Key:
•
Blink
-
Short pause
—
Long pause