IBM 8681 Hardware Maintenance Manual - Page 129

I/O function card jumpers

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I/O function card jumpers: Table 13 describes the jumpers on the I/O function card. The highlighted numbers in the table correspond to the highlighted numbers on the illustration in "I/O function card component locations" on page 120. See "Three-Pin jumper blocks" on page 126 for instructions and an illustration on changing the I/O function card jumper settings. Note Turn off the server, and disconnect the power cord before moving any jumpers. Table 13. I/O function card jumpers Jumper name 3 J19 SCSI B detect jumper 9 J13 Flash page swap 1 J14 Power-on password override 11 J15 Clear CMOS register contents jumper Description The default position is a jumper installed on pins 1 and 2. Change the position of this jumper after you disconnect the SCSI cable from the internal SCSI port B and connect the cable to a ServeRAID adapter. See "Cabling internal hard disk drives to a ServeRAID adapter (optional)" on page 90 for additional information. The default position is a jumper installed on pins 2 and 3. Changing the position of this jumper will change which of the two pages of flash ROM is used when the system starts. Changing the position of this jumper bypasses the power-on password check. You do not need to move the jumper back to the default position after the password is overridden. Changing the position of this jumper does not affect the administrator password check if an administrator password is set. If you need to erase configuration information, you must move this jumper. The default position is a jumper installed on pins 1 and 2. When you change the position of this jumper, you must remove the battery on the I/O function card, and then move the jumper to pins 2 and 3. See "Battery replacement" on page 49. After removing the battery and moving the jumper, wait at least 5 minutes. Changing the position of this jumper erases all configuration and setup information, including the power-on and administrator passwords. Therefore, you must reconfigure the server after clearing CMOS memory (see "Reconfiguring the server and updating server records" on page 59). If possible, record the server configuration information before moving the Clear CMOS register contents jumper. After you clear the CMOS register contents, move the jumper back to its normal position (pins 1 and 2); then, reinstall the battery on the I/O function card. Netfinity 8500R - Type 8681 121

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I/O function card jumpers:
Table 13 describes
the jumpers on the I/O function card.
The highlighted
numbers in the table correspond to the highlighted
numbers on the illustration in “I/O function card component
locations” on page
120.
See “Three-Pin jumper blocks” on
page
126 for instructions and an illustration on changing
the I/O function card jumper settings.
Note
Turn off the server, and disconnect the power cord
before moving any jumpers.
Table 13. I/O function card jumpers
Jumper name
Description
±3²
J19 SCSI B
detect jumper
The default position is a jumper installed on
pins 1 and 2.
Change the position of this
jumper after you disconnect the SCSI cable
from the internal SCSI port B and connect the
cable to a ServeRAID adapter.
See “Cabling
internal hard disk drives to a ServeRAID
adapter (optional)” on page
90 for additional
information.
±9²
J13 Flash page
swap
The default position is a jumper installed on
pins 2 and 3.
Changing the position of this
jumper will change which of the two pages of
flash ROM is used when the system starts.
±1³²
J14 Power-on
password override
Changing the position of this jumper bypasses
the power-on password check.
You do not
need to move the jumper back to the default
position after the password is overridden.
Changing the position of this jumper does not
affect the administrator password check if an
administrator password is set.
±11²
J15 Clear
CMOS register
contents jumper
If you need to
erase
configuration information,
you must move this jumper.
The default
position is a jumper installed on pins 1 and 2.
When you change the position of this jumper,
you must remove the battery on the I/O
function card, and then move the jumper to
pins 2 and 3.
See “Battery replacement” on
page
49.
After removing the battery and
moving the jumper, wait at least 5 minutes.
Changing the position of this jumper erases
all configuration and setup information,
including the power-on and administrator
passwords.
Therefore, you must reconfigure
the server after clearing CMOS memory (see
“Reconfiguring the server and updating server
records” on page
59).
If possible, record the
server configuration information
before
moving the Clear CMOS register contents
jumper.
After you clear the CMOS register contents,
move the jumper back to its normal position
(pins 1 and 2); then, reinstall the battery on
the I/O function card.
Netfinity 8500R - Type 8681
121