Bypassing Post; Table 3-2 Keyboard Led Patterns - Sun Microsystems Ultra 60 Service Manual

TABLE 3-2
Caps Lock Compose
On Off
Off On
Off On
On Off
On On
On On
On On
On On
Off Off
3.5

Bypassing POST

POST can be disabled and thereby bypassed. To bypass POST:
1. Prior to powering on the system, press and hold the Stop key on the keyboard
(
FIGURE 3-2
2. With the Stop key pressed, turn on the system by pressing the power-on key.
Keyboard LED Patterns
Scroll Lock Num Lock
Off Off
Off Off
On Off
Off On
Off Off
Off On
On Off
On On
Off On
).
Meaning of Pattern
System motherboard
CPU module 0
CPU module 1
No memory detected
Memory bank 0
Memory bank 1
Memory bank 2
Memory bank 3
NVRAM
Chapter 3 Power-On Self-Test 3-21