Compuprint MDP40B Programmer Manual - Manual (Page 192)

C-50
ERROR DURING MAGNETIC/OPTICAL OPERATION
Byte x:
bit 8: = 0 fixed
bit 7: = 1 fixed
bit 6: = 1 fixed
bit 5: = 1 fixed
bit 4: = 0 fixed
bit 3: = 0 fixed
bit 2: = 1 Virgin stripe (1)
bit 1: = 1 Read or check error (2)
(1) Generated when no character is read during a read operation.
(2) Generated when read errors are detected.
When the machine enters error status, it stays there until the reset error command (ESC
l) is received.
While in the error status, the machine discards all the data and/or commands sent to
it except for status or ID requests (ESC j, ESC i, ESC Z).
In the event of a jam, the reset error command must be followed by an eject document
command (ESC l, ESC O).
The general reset command resets all kinds of errors.
MECHANICAL FAULT
Byte x: "o" (6F)
When a mechanical movement is not performed, a mechanical fault is signaled.
The printer stays in this condition until a general reset command (ESC 0) is received,