Question about Lexmark T640dtn Printer
You may have a high voltage power supply problem. Here is the info from the service manual about that error.
Check the voltage at J15-3. The voltage changes from +24 V dc with the printer idle to 0 V dc when the printer runs the print test. If the voltage is incorrect, check the continuity of line J15-3 in the front cable harness to the HVPS. If there is no continuity, replace the cable harness. If there is continuity, replace the HVPS. If the problem continues, replace the system board.
Your error message diag/repair is a bit involved. If you need a service manual we have them in available for $6.95 in electronic form. W also have repair parts in stock for this unit, email me if you need parts prices.
I hope this helps you, if so please rate my solution.
Posted on Jul 03, 2009
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Posted on Jan 02, 2017
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