Sun Microsystems Solaris 7 11/99 Hardware Platform Manual page 85

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
(*) 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
If the jumper is set for low-half booting, move it to high-half booting (pins 1 and
2 jumpered). See
TABLE 4-5
System Jumper
Ultra 1, 2 J2204
Sun Enterprise J5501
450 or Sun Ultra
450 workstation
*
1 2 3
High-half
booting
FIGURE 4-6
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.
Chapter 4 Updating the Flash PROM on the Ultra 1, Ultra 2, Ultra 450, and Sun Enterprise 450 Systems
FIGURE 4-1
.
FIGURE 4-6
.
FIGURE 4-6
Boot Control Jumper
Pins 1 + 2 Jumpered Pins 2 + 3 Jumpered
High-half booting Low-half booting
High-half booting Low-half booting
*
1 2 3
Low-half
booting
Setting the Boot Control Jumper to Low-Half Booting or High-Half Booting
, ,
FIGURE 4-2 FIGURE 4-6
Default Jumper on
Pins
2 + 3
2 + 3
, and . An asterisk
FIGURE 4-7
Name
Boot control
Boot control
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