Power Supply Connector 5
Power Supply Connector 6
Pin Signal V dc
Min.
V dc
Max.
1 VCC-off +2.0 V +4.5 V
2, 3 GND — —
4 SUB 12
V
+11.4 V +12.6 V
5 GND — —
6, 7 +12 V +11.4 V +12.6 V
8 GND — —
9—11 +3.3 V +3.0 V +3.6 V
12—14 GND — —
15—17 +5 V +4.75 V +5.25 V
18—20 GND — —
Pin Signal V dc Min. V dc Max.
1 (red) Fan off 0 V +0.5 V
2 (black) GND — —
Checking the Installed Devices List
If a device is installed but the icon appears in a gray shade
rather than a dark shade on the basic diagnostics screen,
the device is defective. Reseat the device connectors. If
the symptom remains, replace the device or the system
board of the computer. If needed, adjust the contrast
control to clearly distinguish the shades of the icon.
If a device that is not installed appears in a dark shade (for
example, FDD-2 appears in a dark shade when
no
second
FDD is installed), do the following:
1. Replace the first device in the configuration, such as
an FDD-1 and an HDD-1.
2. If the problem remains, replace the system board of
the computer.
628 IBM Mobile Systems HMM
