HP LaserJet Enterprise 600 Service Manual - Page 225

Connectivity LED, product initialization, green-the LED is off if the product is

Page 225 highlights

The connectivity LED operates according to the product state. When the product is initializing, see Connectivity LED, product initialization on page 201. When the product is in Ready mode, see Connectivity LED, product operating on page 203. Connectivity LED, product initialization The following table describes the connectivity operation while the product is executing the firmware boot process. NOTE: When the initialization process completes the connectivity LED should be illuminated solid green-the LED is off if the product is in Sleep Mode If after initialization the connectivity LED is not solid green, see Connectivity LED, product operating on page 203. Table 3-9 Connectivity LED, product initialization Product initializing state Connectivity LED, normal state Connectivity LED, error state No power (power cord Off unplugged or power button off) Power on (immediately after the power button pressed) Red, solid ● Duration should be 1 second or less Not applicable Red, solid ● Firmware error; problem finding hardware and booting the serial peripheral interface flash memory ◦ Boot process halted Serial peripheral interface (SPI) flash memory boot HW checks on board DRAM Control panel connection initializes Replace the formatter. Green, solid Red, solid ● Firmware error; problem corrupt or missing SPI flash memory ◦ Boot process halted Replace the formatter. Green, solid Red, solid ● Power on self check failure ◦ Boot process halted Replace the formatter. 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 201

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The connectivity LED operates according to the product state. When the product is initializing, see
Connectivity LED, product initialization
on page
201
. When the product is in
Ready
mode, see
Connectivity LED, product operating
on page
203
.
Connectivity LED, product initialization
The following table describes the connectivity operation while the product is executing the firmware
boot process.
NOTE:
When the initialization process completes the connectivity LED should be illuminated solid
green—the LED is off if the product is in
Sleep Mode
If after initialization the connectivity LED is not solid green, see
Connectivity LED, product operating
on page
203
.
Table 3-9
Connectivity LED, product initialization
Product initializing
state
Connectivity LED, normal state
Connectivity LED, error state
No power (power cord
unplugged or power
button off)
Off
Not applicable
Power on (immediately
after the power button
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
201