IBM SY44-5902-05 manual Control panel functions Models 270, 8xx, SB2, SB3

Control panel functions (Models 270, 8xx, SB2, SB3, and 890)

The control panel functions and descriptions are listed in Table 16 on page 160. For more details about the functions, begin at “Control panel function descriptions (Models 270, 8xx, SB2, SB3, and 890)” on page 177.

Notes:

1. Some control panel functions might not be available on all system types.

2. The x can be any number 0 through 9, any letter A through F, or a blank.

3. If the customer was performing the function, find out why the customer

		selected the function and verify whether it is complete.
		4. If you cannot change the Function/Data display or complete the selected
		function, go to “Starting Point for All Problems” in the Problem Analysis
		information for your system.
Table 26. Control panel (32-character) function codes
Function code	Function selected
01	1. Display the currently selected IPL type (and logical key mode on some system
		types).
		2. Display the currently selected IPL speed override for the next IPL.
02	Used to select the IPL type, logical key mode, and IPL speed.
03	Start an IPL to load the system. The IPL uses the selected IPL options.
04	Lamp test; all displays and indicators will be switched on.
05	System Power Control Network (SPCN) system reference code (SRC); displays an
		SRC on the control panel.
07	Allows you to perform SPCN service functions.
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, processor feature code, processor class indicator,
		and IPL path description.
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 IPL” on
		page 186. 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 IPL.
35 through 49	Reserved.
50	System processing unit stop.

174Service Functions V5R2