IBM System x3650 M4 Type 7915 Problem Determination And Service Manual page 143

2. To view the light path diagnostics panel, press the blue release latch on the
operator information panel. Pull forward on the panel until the hinge of the
operator information panel is free of the server chassis. Then pull down on the
panel, so that you can view the light path diagnostics panel information.
Operator information
panel
Light path
diagnostics LEDs
Release latch
This reveals the light path diagnostics panel. Lit LEDs on this panel indicate the
type of error that has occurred. The following illustration shows the light path
diagnostics panel:
Light Path Diagnostics
Checkpoint
Code
Remind
Reset
125
Chapter 3. Diagnostics