User Guide

TIP: If the heartbeat LED is illuminated—by an error condition or normal operation—the formatter is
fully seated and the power is on. The pins for the LED circuit in the formatter connector are recessed so
that this LED will not illuminate unless the formatter is fully seated.
The heartbeat LED operates according to the product state. When the product is initializing, see
Heartbeat LED, product initialization on page 81.
Heartbeat LED, product initialization
The following table describes the heartbeat LED operation while the product is executing the firmware
boot process.
NOTE: When the initialization process completes the heartbeat LED should be illuminated solid green
—the LED is off if the product is in Sleep Mode.
Table 2-8 Heartbeat LED, product initialization
Product initializing
state
Heartbeat LED, normal state Heartbeat LED, error state
No power (power cable
disconnected or power
switch off)
Off Not applicable
Power on (immediately
after the power switch
pressed)
Red, solid
●
Duration should be 1 second or less
Red, solid
●
Firmware error; problem finding hardware
and booting the serial peripheral interface
flash memory
◦
Boot process halted
Replace the formatter.
Serial peripheral
interface (SPI) flash
memory boot
Green, solid Red, solid
●
Firmware error; problem corrupt or missing
SPI flash memory
◦
Boot process halted
Replace the formatter.
HW checks on board
DRAM
Green, solid Red, solid
●
Power on self check failure
◦
Boot process halted
Replace the formatter.
Control panel
connection initializes
Green, solid
NOTE: Control panel communication
successful. If an error occurs, a message should
appear on the control-panel display.
Yellow, fast flash
●
Formatter to control panel connection failed
◦
Boot process continues
Check the cables between the formatter and
control panel for damage. Make sure that the
cables are fully seated.
ENWW
Tools for troubleshooting
81