IBM VERSION 5 SY44-5902-05 - Manual (Page 229)

D6xx 0298
System shutdown started
D6xx 0299
System shutdown status
D6xx 0483
Power failed; delay timer is running
D6xx 0484
MI run in progress
D6xx 5500
System shutdown status; attempting to delete information from the disk
subsystem cache
D6xx 5501
System shutdown status; indicates that the information from the disk
subsystem cache was deleted successfully
D6xx 5502
System shutdown status; indicates that the system failed to delete
information from the disk subsystem cache
D6xx 5503
System shutdown status, which indicates the information from the disk
subsystem cache was deleted with qualified success
D900 2740
Power down immediate
D900 2750
All subsystems ended
D900 2760
Device configuration shutdown
D900 2770
QLUS job ending
D900 2780
Close database cross-reference files
D900 2790
QSYSARB job ending
D900 27C0
System jobs are ending
Chapter 6. System Reference Code (SRC) Information 215