HP LaserJet Enterprise Flow MFP M575
Troubleshooting. LED diagnostics. 2 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.
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. |
Preboot menu available (including diagnostics) | Green, solid | Red, solid • Diagnostic failure ◦ Follow diagnostic instructions Turn the power off, and then on again to restart the initialization process. |
Accessing disk for firmware image | Green, solid NOTE: If applicable, disk error messages appear on the control-panel display. |
Yellow, fast flash • Control panel not connected |
Firmware boot | Green, solid NOTE: If applicable, error messages appear on the control-panel display. |
Yellow, fast flash • Control panel not connected |
Product operational | Green, heartbeat blink NOTE: If applicable, error messages appear on the control-panel display. |
Yellow, fast flash • Control panel not connected |
49.XX.YY error or initialization freezes | Not applicable | LED off NOTE: An error message (for example, 49.XX.YY) might appear on the control-panel display. Eventually a formatter connection missing message will appear. Turn the power off, and then on again to restart the initialization process. If the error persists, perform a firmware upgrade. |
Control panel connection interrupted after the product is operational | Not applicable | Yellow, fast flash • Control panel not connected |
Sleep Mode | Green, slow blink | Not applicable |
Approaching Sleep Mode | Green, slow blink | Not applicable |
Wake up from Sleep Mode | Follows initialization progression. | Follows initialization progression. |
Approaching wake up from Sleep Mode | Follows initialization progression. | Follows initialization progression. |