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The CPU card LEDs indicate Bootloader status as shown in the table below.
Table 2-1. CPU Card LEDs 1 through 4
Status
Condition
LED4 LED3 LED2 LED1
Bootloader
Initialization
On (0.25s),
Off (0.25s)
On (0.25s),
Off (0.25s)
On (0.25s),
Off (0.25s)
On (0.25s),
Off (0.25s)
Bad Master
CRC or No
Master Present
On Off Off Off
Diagnostic Fail –
RAM
On Off Off On
Diagnostic Fail –
Bootloader CRC
On Off On Off
Downloading
Master
On Off On On
Downloading
CFIG
On On Off Off
Downloading
MsgLib
On On Off On
Downloading
BootLoader
On On On Off
Download
Successful
On On On On
Continued on next page
Introduction to 4100U-S1 Cabinet, Continued
CPU Card LEDs