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1. Power on the system.
2. Press the Increment (↑) or Decrement (↓) button on the control panel to display
Function 04.
Press Enter on the control panel.
3. Do all of the following lights on the system control panel go on?
v The Processor Active/Activity light
v The Processor Activity Select lights
v System Attention light
v Power On light
v A 5 x 7 dot pattern for each character in the Function/Data display
v Mode lights (if available)
Yes No
↓ Exchange the control panel or the replaceable unit that contains the
SPCN function (SPNLCRD or ac module). (See “Removal and
Installation Procedures” in the Problem Analysis information for your
system.)
4. The lights on the system control panel are working correctly.
This ends the procedure.
Function 05–SPCN SRC: Function 05 is available only on systems with SPCN.
Function 05 displays information about power faults and provides informational
reference codes during disk unit concurrent maintenance procedures. The format
for this function is as follows:
Function 06–Disable Continuous Power Main Storage (CPM): Function 06 is
available only on systems with SPCN. It is enabled only when you select Manual
mode and the system has enabled CPM.
When you power off the system, use this function to disable the continuous
powered main storage (CPM) operation.
Table 23. Function 06 Disable CPM
Function / value Action or description
06______ Use the Increment or Decrement buttons to scroll to function 06. If
you cannot scroll to function 06, CPM is not active.
06___E__ Press Enter to enter Disable CPM operation. E (Enable) indicates
that the CPM function is active.
Figure 75. SPCN SRC Formats
166 Service Functions V5R2