HP Color LaserJet 2550L User Manual

Resolving the control panel messages
Printer status is indicated by light patterns on the control panel. Two sets of lights are on the
control panel: Supplies Status lights and Printer Status lights:
8
1
10
11
12
9
3
4
5
2
6
7
1Supplies status lights and buttons
2 Black print-cartridge light
3 Cyan print-cartridge light
4 Magenta print-cartridge light
5 Yellow print-cartridge light
6R
OTATE CAROUSEL button
7 Imaging drum light
8Printer status lights and buttons
9C
ANCEL JOB button
10 Attention light...

Supplies Status lights
This section describes the meaning of the patterns for the lights in the Supplies Status area.
Information about supplies also appears in the HP Toolbox. (For more information, see
Maintenance.) To order new supplies, see Accessories and ordering information.
Light patternRecommended action
Black print cartridge is low
The black print-cartridge light is on. The printer continues to print without any
action required until the print cartridge is empty. Order a new print cartridge....

Light patternRecommended action
Black print cartridge is empty or missing
The black print-cartridge light is blinking. The printer stops printing.
The print cartridge is empty or missing, or the printer cannot detect the print
cartridge correctly. You must replace the print cartridge before the printer can
continue printing.
Reinsert or replace the print cartridge. If the print-cartridge light is still blinking but
the Attention light is not on, turn the printer off and then on. If the problem
persists,...

Light patternRecommended action
Black print cartridge is a non-HP print cartridge
The black print-cartridge light is blinking and the Attention light is on. The printer
stops printing.
A non-Hewlett-Packard supply has been detected. Although HP supports
customer choice, HP cannot guarantee the quality or reliability of non-HP
supplies. Service or repairs required as a result of using a non-Hewlett-Packard
supply are not covered under the printer warranty.
If you want to use this non-HP print cartridge,...

Light patternRecommended action
Yellow print cartridge is a non-HP print cartridge
The yellow print-cartridge light is blinking and the Attention light is on. The printer
stops printing.
A non-Hewlett-Packard supply has been detected. Although HP supports
customer choice, HP cannot guarantee the quality or reliability of non-HP
supplies. Service or repairs required as a result of using a non-Hewlett-Packard
supply are not covered under the printer warranty.
If you want to use this non-HP print cartridge,...

Light patternError and recommended action
Ready
The Ready (green) light is on and the printer is ready to print. No action is
needed. Pressing 
 (GO) prints a Demo page.
Pressing 
 (GO) and  (CANCEL JOB) simultaneously prints a Configuration
page and a Supplies Status page, and also an HP Jetdirect page if an HP
Jetdirect print server is installed.
Processing
The Ready light is blinking. The printer is receiving or processing data.
Pressing 
 (CANCEL JOB) cancels the current job. One or two pages might...

Light patternError and recommended action
Attention with Ability to Continue
The Attention light is blinking and the Go light is on. The printer stops printing.
The message appears in these situations:
●Manual feed with pause. Someone sent a manual feed job and the printer
is waiting for the special print media. Load print media into tray 1, and if the
printer does not begin printing after the pages are reloaded, press 
 (GO).
Or, just press 
 (GO) to try to print from another tray.
●Manual two-sided...

Secondary light patterns for Printer Status lights
This section describes the secondary light patterns that you can display when you
experience an Accessory error. Secondary light patterns provide more information about the
specific type of error that occurred. To understand the secondary light pattern, perform one
of these steps:
●
Press and hold 
 (GO) . When the secondary light pattern appears, use this section to
identify the associated error. When you release the buttons, the light pattern for the...

Clearing jams
Occasionally, paper or other print media can become jammed during a print job. Some
causes include the following events:
●The input trays are loaded improperly or overfilled.
●Tray 2 or optional tray 3 is removed during a print job.
●The top cover is opened during a print job.
●Too many sheets accumulated in an output area or sheets blocked an output area.
●The print media that is being used does not meet HP specifications. See 
Print-media
specifications.
●The environment in which the...

2. Remove the imaging drum by pushing it away from you and lifting it out of the printer.
You cannot reach jams by removing the print cartridges.
3. Complete one of these steps:
●If the leading edge of the print media is visible, carefully and slowly pull the print
media out of the printer.
●If the print media is too difficult to remove, remove the jam as described in 
To clear
jams from output areas.
4. After the jam has been removed, replace the imaging drum and close the top cover.
5.
Press  (GO) if...