Table 2-8
Heartbeat LED, status
LED color
Description
Green
●
Solid—During part of boot up initialization and Pre-boot menu
●
Slow blinking—During normal operation/sleep mode
◦
Formatter is operating normally
◦
Firmware is operating normally
◦
Control panel is connected
Yellow
●
Fast blinking—Formatter cannot connect to the control panel
◦
Check control panel connections
◦
Verify control panel functionality
Red
●
Solid—Formatter error or failure (initially red for one second during power on)
◦
Serial peripheral interface (SPI) flash memory boot error
◦
Power on self test (formatter) failed
◦
Diagnostic (formatter) failed
Off
The power cable is disconnected, or the product power switch is in the off position.
●
Firmware or system freeze, re-boot the product, reload or upgrade the firmware
◦
Check control panel for an error message
◦
Control panel failure or the product power switch is in the off position
NOTE:
This condition is not usually caused by a formatter failure. Turn the power off, and then
on again. If the error persists, perform a firmware upgrade.
Connectivity LED
If the connectivity LED is solid green, it indicates that the formatter assembly is correctly plugged in and
powered up.
TIP:
If the connectivity LED is illuminated, 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.
HP Jetdirect LEDs
The embedded HP Jetdirect print server has two LEDs. The yellow LED indicates network activity, and
the green LED indicates the link status. A blinking yellow LED indicates network traffic. If the green LED
is off, a link has failed.
134
Chapter 2 Solve problems
ENWW
Summary of Contents for LASERJET ENTERPRISE MFP M725dn
Page 1: ...LASERJET ENTERPRISE MFP M725 Troubleshooting Manual M725z M725dn M725f M725z ...
Page 2: ......
Page 3: ...HP LaserJet Enterprise MFP M725 Troubleshooting Manual ...
Page 6: ...iv Conventions used in this guide ENWW ...
Page 32: ...xxx ENWW ...
Page 142: ...110 Chapter 1 Theory of operation ENWW ...
Page 457: ...4 Close the fuser jam access cover 5 Close the fuser door ENWW Clear jams 425 ...
Page 475: ...1 Lift the document feeder latch 2 Open the document feeder cover ENWW Clean the product 443 ...
Page 516: ...484 Appendix A Service and support ENWW ...
Page 545: ......
Page 546: ... 2013 Hewlett Packard Development Company L P www hp com CF066 91023 CF066 91023 CF066 91023 ...