IBM System x3620 M3 7376 Installation And User Manual page 42

Table 4. System pulse LEDs (continued)
LED
IMM heartbeat
26
System x3620 M3 Type 7376: Installation and User's Guide
Description
IMM heartbeat boot process.
Action
The following steps describe the
different stages of the IMM heartbeat
sequencing process.
1. When this LED is blinking fast
(approximately 4Hz), this
indicates, that the IMM code is in
the loading process.
2. When this LED goes off
momentarily, this indicates that
the IMM code has loaded
completely.
3. When this LED goes off
momentarily and then starts
blinking slowing (approximately
1Hz), this indicates that IMM is
fully operational. You can now
press the power-control button to
power-on the server.
4. If this LED does not blink within
30 seconds of connecting a power
source to the server, complete the
following steps:
a. (Trained service technician
only) use the IMM recovery
jumper to recover the firmware
(see "System-board jumpers"
on page 23).
b. (Trained service technician
only) replace the system
board.