Question about Lexmark T640 Laser Printer
Printer is displaying error 933
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Posted on Jan 02, 2017
SOURCE: optra t610 error 935/933/934
replace printhead - scanner assembly. The scanner motor is not working correctly. Need to remove side covers, back of printer assembly, the top cover. Printhead is below the top cover
Posted on Mar 13, 2009
933 - Mirror Motor - Locks/Lost Hsync* (*Horizontal Sync) Have you gone through this exercise yet: These errors usually indicate a failure in the HYSNC signal to the printhead. Check the continuity of the cables connected to J5 and J4 on the system board. If incorrect, replace the defective cable. The voltage at J4-1 measures approximately +5 V dc. If incorrect, replace the system board. The voltage at J5-7 measures approximately +24 V dc. If incorrect, replace the system board. If correct, replace the printhead assembly. Don
Posted on Jun 07, 2009
f the printer continues to post a 930 Printhead Error,
it thinks the wrong printhead unit is installed.
Posted on Mar 03, 2010
SOURCE: 935 service printhead error
Hello. Unfortunately, if that's the case, there's not much you can do about it but have it serviced. Hope I can assist you more with it.
Posted on Apr 06, 2010
Tips for a great answer:
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A Printhead Error message indicates that the printhead (laser scanner) unit inside the printer is not working correctly.
NOTE: On the E250d(n) models, all service errors are signified by the flashing of all of the lights. To determine if this is a printhead error, quickly double-press the button to see the secondary code. If the !, , and lights are the only ones blinking, a printhead or a motor failure is indicated. For more information on deciphering the error lights, click here (PDF file, 255KB).
Step Action 1 If this is the first time you have seen the error, turn the printer off. 2 Leave the printer powered off for 10 seconds or more before turning it back on. This gives the printer a chance to reset. 3
Power the printer back on. If it goes to the Ready state, try printing again. If the error does not return, continue using the printer. 4
If the printhead error returns when the printer is powered on or when you try to print again, follow the suggestions below.
If this is an intermittent error, you may want to check how the printer is plugged into the wall.
Make sure the printer is plugged straight into the wall and not through a surge device or power strip. Please try this even if the printer previously worked correctly with this surge device. Power strips and uninterrupted power supplies can cause a low amperage problem, which can trigger a false printhead error.
You may also want to try plugging the printer into a different wall outlet to see if the printhead error continues. This will eliminate the power source as a possible cause of the issue.
If the error does not clear, the printer will probably require service to correct the issue. Please contact Lexmark Technical Support or a local authorized servicer for assistance.
When calling Lexmark Technical Support for service, please be prepared to describe the problem you are experiencing or the error message on the display. You will also need to provide your printer's model type and serial number. This information can be found on a label on the inside of the front cover of the printer.
Please call from near the printer in case the technician asks you to perform a task involving the printer.
Have a nice day and do not forget to rate please...!
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