Determining Dc-To-Dc Status - IBM xSeries 380 Hardware Maintenance Manual

Determining DC-to-DC status

Table 25. 2D modes for 64-bit SDR SD/SGRAM (100 MHz).
Refresh
Display rate
mode MHz 8
60
70
74
75
85
90
100
Each DC-to-DC has an LED that indicates whether power is supplied to the DC-to-DC
and the health of the DC-to-DC. The following table provides more detail on the
LEDs. The LEDs are located on the Sideplane board above the 5-Volt DC-to-DC
connector (J6B1).
Table 26. DC-to-DC LED.
AC power
AC power not
present system
present (amber
powered off
LED)
(amber LED)
Off
Buffer Memory (MB)
4 8
Color Depth (bpp)
16 24 32 8 16 24
—
—
—
—
—
—
—
AC power
present system
powered on
(amber LED)
On
Off
On
16
32 8 16 24 32 8
— —
Description
No AC power to any power supply
or DC-to-DC
AC present/ standby output on
AC present / standby output on;
DC-to-DC outputs on and okay
AC present / standby output on;
DC-to-DC failure; DC-to-DC not
installed
FRU information (service only)
32
16 24 32
—
225