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Table 16. Control panel (8-character) function codes (continued)
Function code Function selected
06 Disable CPM.
07 Pressing the Enter button allows execution of the following subfunctions to restore
system power and perform concurrent maintenance:
** Cancel Request
01 System Power On
02 Fan Power Off
03 Bulk Power Off
04 Fan Power On
05 Bulk Power On
08 Fast power off; to perform a fast power off, see “Powering Off and Powering On
the System” in the Problem Analysis information for your system.
09 through 10 Reserved.
11 through 19 System reference code (SRC); displays an SRC on the control panel.
20 Display the machine type, model, and processor feature code.
21 Causes the Use Dedicated Service Tool (DST) display to appear on the system
console; to exit DST, select the Resume operating system display option.
22 Force system main storage dump. First see “Function 34–Retry MSD or CPM IPL”
on page 170. To perform a system main storage dump, see “Performing a main
storage dump to disk (manual MSD)” on page 271.
23 Reserved.
24 Reserved.
25 Use Service switches 1 and 2 to enable or disable functions 50 through 99.
26 Use Service switches 1 and 2 to enable or disable functions 50 through 99.
27 through 32 Reserved.
33 Reorder SPCN addressing.
34 Retry MSD or CPM IPL.
35 through 49 Reserved.
50 System processing unit stop.
51 System processing unit status; displays the following values: B0 register contents,
Next Instruction Address (NIA), and current Task Dispatching Element (TDE)
contents.
52 System processing unit start.
53 Resets the control panel interface.
54 Display low-level diagnostic I/O configuration table.
55 Display low-level diagnostic service processor log buffer.
56 Display low-level diagnostic service processor code area.
57 Display low-level diagnostic IPL message save area.
58 Display low-level diagnostic IPL parameters area.
59 Set the first two characters of the base address for the function 62 display.
60 Set third character of base address for function 62 display.
61 Set fourth character of base address for function 62 display.
62 Display multiple function I/O processor storage.
Chapter 5. Control Panel Functions 161