Sun Microsystems 60 service manual Bypassing Post, 2Keyboard LED Patterns

TABLE 3-2Keyboard LED Patterns

Caps Lock	Compose	Scroll Lock	Num Lock	Meaning of Pattern
On	Off	Off	Off	System motherboard
Off	On	Off	Off	CPU module 0
Off	On	On	Off	CPU module 1
On	Off	Off	On	No memory detected
On	On	Off	Off	Memory bank 0
On	On	Off	On	Memory bank 1
On	On	On	Off	Memory bank 2
On	On	On	On	Memory bank 3
Off	Off	Off	On	NVRAM

3.5Bypassing 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.

Chapter 3 Power-On Self-Test 3-21