IBM eServer 130 xSeries, User Reference Manual

Page: 67 / 156

Chapter 6. Installing options
53
System board switch block
The switch block contains microswitches 1 through 4. Switch 1 is at the top of the
switch block and switch 4 is at the bottom. For more information about this switch
block see “Power-on password” on page 26.
The following table describes the function for each switch.
System board LEDs
The following illustration identifies the LEDs on the system board.
Figure 11. Viewing the system board connectors
Table 5. Switches 1 through 4.
Switch
number Switch
description
1 Reserved. The default setting is Off (disabled).
2 Reserved. The default setting is Off.
3 Reserved. The default setting is Off.
4 Bypass power-on password.
When this switch is toggled to the opposite position, the system bypasses
the power on password, if one is set. See “Power-on password” on page
26.
Light Path
Diagnostic circuit
verification LED
Light Path
Diagnostics
button
Light Path
Diagnostics
panel
Fan 1
failure
(CR15)
Fan 3
failure (CR31) Fan 5
failure (CR40)
Fan 4
failure (CR33) Fan 6
failure (CR48)
Fan 2
failure
(CR17)
Microprocessor 1
failure (CR26)
Microprocessor 2
failure (CR53)
DIMM 4
failure
(CR 54)
DIMM 3
failure
(CR 46)
DIMM 2
failure
(CR 39)
DIMM 1
failure
(CR 38)
Power-on
indicator
(CR47)
PS
TEMP
FA
N
SP
MEM
CPU
VRM
PCI
Light P
ath
Remote supervisor
adapter connector