IBM SY44-5902-05 manual Ways to access the control panel Models 270, 8xx, SB2, SB3

Table 26. Control panel (32-character) function codes (continued)
Function code	Function selected
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	Activates, deactivates, and queries the Repeat GARD function.
54	Reserved.
55	Main store dump override processing
56	Reserved.
57	Display service processor diagnostic data area addresses.
58	Set the first character of the base address for the function 62 display.
59	Set the second character 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 service processor storage.
63	System status SRC trace.
64	Service processor diagnostic status SRC trace.
65	Deactivate remote service.
66	Activate remote service.
67	Disk unit IOP reset/reload; enabled only by specific disk unit SRCs.
68	Concurrent Maintenance power domain Power Off.
69	Concurrent Maintenance power domain Power On.
70	Dump service processor control storage.
71–99	Reserved.
If you cannot find the function code in this chart, the customer support for added features or devices might not
have been available when this information was produced. Look for any supplemental unit function code
information for the function code you displayed on the control panel. If you do not find any additional function
code information, go to “Function 04–Lamp Test” on page 181 and verify that the lamps are working correctly.

Ways to access the control panel (Models 270, 8xx, SB2, SB3, and 890)

A keystick gives the operator security control over the control panel functions and control over data that is accessible from the control panel. The keystick for the electronic keylock activates the Mode-selection button.

Figure 76 on page 176 and Figure 77 on page 176 show the types of iSeries control panels:

Chapter 5. Control Panel Functions 175