Sun Microsystems Solaris 7 11/99, Руководство по аппаратной платформе

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Chapter 4 Updating the Flash PROM on the Ultra 1, Ultra 2, Ultra 450, and Sun Enterprise 450 Systems 73
2. If output cannot be found on any of the installed frame buffers or serial port A,
set the boot control jumper to boot from the half of the PROM that is not
currently selected. See
FIGURE 4-1
,
FIGURE 4-2
,
FIGURE 4-6
, and
FIGURE 4-7
. An asterisk
(*) on the main logic board notes the location of pin 1.
■
If the jumper is set for high-half booting, move it to low-half booting (pins 2 and
3 jumpered). See
FIGURE 4-6
.
■
If the jumper is set for low-half booting, move it to high-half booting (pins 1 and
2 jumpered). See
FIGURE 4-6
.
FIGURE 4-6
Setting the Boot Control Jumper to Low-Half Booting or High-Half Booting
3. Power on the system unit.
■
If the system recovers, complete the programming process by rebooting.
■
If the system does not recover, repeat Step 1 and Step 2 a second time.
4. If the system still does not recover, contact your Sun service provider or local Sun
service Authorized Service Provider.
TABLE 4-5
Boot Control Jumper
System Jumper Pins 1 + 2 Jumpered Pins 2 + 3 Jumpered
Default Jumper on
Pins
Name
Ultra 1, 2 J2204 High-half booting Low-half booting 2 + 3 Boot control
Sun Enterprise
450 or Sun Ultra
450 workstation J5501 High-half booting Low-half booting 2 + 3 Boot control
1 2 3
*
1 2 3
*
High-half
booting Low-half
booting