Hitachi Compute Rack 220H Replacement Manual page 26

MAINTENANCE LEDs
Figure 1-4: MAINTENANCE LEDs
MAINTENANCE LEDs can display the event code, the POST code or the power
consumption, and you can select what to display on it by using the SERVICE
switch.
A combination of ON/OFF selections of Dot LED (left), Dot LED (right), and
SERVICE LED determines what is currently displayed.
A combination of ON/OFF selections of Dot LED (left), Dot LED (right), and the
SERVICE LED determines what the MAINTENANCE LEDs indicate as follows:
Table 1-4: What the MAINTENANCE LEDs indicate
SERVICE LED
Off
On
Off
•
Event code
The operation status of the system unit is displayed. Under normal operation,
"00" is displayed. If an error occurs, the two-digit number corresponding to
the component where the error occurred is indicated at LED.
Table 1-5: Event code indicate
MAINTENANCE
00
01
02
04
08
1-6
Dot LEDs
Dot LED
(left)
Off
On
On
Where the error
LED occurred
Normal operation
Other hardware
Temperature
Fans
Power / Voltage
Introduction
Hitachi Compute Rack 220H CRU Replacement Guide
Dot LED What the MAINTENANCE
(right)
Off Event code
Off
POST code
On
Power consumption
MAINTENANCE
LED
10
20
40
80
(Other codes)
LEDs indicate
Where the error
occurred
PCI
Motherboard
Memory
CPUs
(Multiple locations)