IBM VERSION 5 SY44-5902-05 - Manual (Page 24)

v The F3 function key returns you to the primary menu of the service tool you are
using.
v The F12 function key returns you to the previous DST display.
v The F16 function key returns you to the Use Dedicated Service Tools (DST)
display from the service function you are in. The active service function is not
canceled. To display the service function again, select the Work with DST
environment option.
v The System Request function key returns you to the Use Dedicated Service Tools
(DST) display (on the console). You must type the following on the system
request line:
DST
The active user job is not canceled.
Exiting Dedicated Service Tools
You can exit dedicated service tools (DST) by performing one of the following:
v To exit DST and end all DST functions:
Press F3 (Exit) on the Use Dedicated Service Tools (DST) display. The Exit
Dedicated Service Tools display appears with the following options:
– Exit dedicated service tools (DST)
– Resume dedicated service tools
To exit and end all DST functions, select the Exit dedicated service tools (DST)
option.
v To exit DST and allow the DST functions to remain active, ensure that the
system is operating in debug mode. Select the Select DST console mode option on
the Use Dedicated Service Tools (DST) display. For more information on the DST
console mode, see “Select DST console mode” on page 27
DST options
DST options vary depending on the paging environment and how you access DST.
This section provides information on all DST functions in all paging environments.
For a list of specific options available in each paging environment, see Table 1 or
“System paging environments” on page 2.
For more information on how to access DST, see “Accessing Dedicated Service
Tools” on page 4.
Table 1. DST options
DST options
Paging environment
D-IPL (non-paging) Limited Full
Install Licensed Internal Code Yes No No
Install the operating system No Yes Yes
Perform an IPL No Yes Yes
Perform automatic installation of the operating system No Yes ¹ Yes
Save Licensed Internal Code No Yes ¹ Yes ¹
Select DST console mode No Yes ¹ Yes ¹
Start a service tool Yes Yes Yes
10 Service Functions V5R2