All not 3800 or 3900 printers

Table 1 shows the reason code in addition to completion code 0C00.

Table 1. Reason Codes for Not 3800 or 3900 Printers (for Completion Code 0C00)
Reason Code (Byte 3)	Meaning
X'00'	The I/O error was not caused by a load check.
X'04'	FCB load failed because of a load check. Probably caused by invalid FCB contents.