Service manual

3-14 Sun Ultra 2 Series Service Manual • July 1996
3.6 Bypassing POST
POST may be disabled and bypassed. To bypass POST:
1. Prior to powering on the system, press and hold the Stop and D keys on the
keyboard (
FIGURE 3-2).
2. With holding down the keyboard Stop and D keys, press the Power-on to turn on
the system unit.
3.7 Additional Keyboard Control
Commands
■ Stop Key
If the diag-level is set to either max or min and the diag-level switch? variable
is set to true and POST is not to be executed when the system unit is powered on,
press and hold the Stop key and press the Power-on key.
Off On On On 0111
(2)
DSIMM in slot U 0404/0504 failed
On Off Off Off 1000
(2)
DSIMM in slot U 0604/0704 failed
On Off Off On 1001
(2)
System board failed
On Off On Off 1010
(2)
No memory found
On Off On On 1011
(2)
Reserved
On On Off Off 1100
(2)
Reserved
On On Off On 1101
(2)
Reserved
On On On Off 1110
(2)
Bad CPU0
On On On On 1111
(2)
Bad CPU1
TABLE 3-2 Keyboard LED Patterns (Continued)
Caps Lock Compose Scroll Lock Num Lock Bit Value Meaning of Pattern