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Printer blues

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by grandhighdruid 1 view

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I am having trouble with a HP IIIsi. I am getting about 2/3 of a page with nothing but black lines, and an error code 51. I have tried replacing the DC controller, DC power supply, laser scanner and the fiber optic cable. The proper voltages are being dropped at the scanner, and I have tried a known good toner cartridge, all to no avail. I have done an engine test, and it does the same thing. I did a half page test, and I noticed a lot of toner where the printing stopped. Could a high voltage power supply fix this, or could the DC controller be defective, or what could it be? I have been fighting this for 3 weeks, and am contemplating using it for a boat anchor, although it's not my decision. Thanks

5 replies

by mslizny

this is from http://www.hp.com/cposupport/printers/support_doc/bpl04079.html

51 Error Indicates a Beam Detect error. If this error occurs, press the Continue key and the printer will repeat the page. If the printer cannot correct the error after two seconds, a Beam Detect '51 Error' will occur. Replace the toner cartridge and retest the printer. If the printer was just moved from a cold to a warm environment condensation may have formed inside the printer. Allow the printer to stand for up to 6 hours, until any condensation has dissipated. If the problem persists repair service is required.

Perhaps this information will be helpful.

by jwilczyn

1.Defective Toner Cartridge.
2.Problem with fiber optic cable. - Defective or improperly seated.
3.Faulty Connectors. - Reseat connectors J002 on DC Controller and J601 on the Laser Drive PCA.
4.Poor DC Voltage/Defective DC Controller. - Verify 12VDC is present on J601-2 of Laser Drive PCA.
5.Defective Laser/Scanner Assembly.
6.Defective Transfer Roller Assembly.
7.Dirty HV Contacts or Defective HV Power Supply. - Clean HV Contacts or replace HV PCA.
I hope these will help.

by grandhighdruid

I had done most of these already, and I appreciate the response, but I found that the DC controller I had was bad.

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