Question about Canon SmartBase MP730 All-In-One InkJet Printer

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Printer My MP730 Canon Imageclass printer/copier/fax/scanner has stopped printing and is showing a ##334 error code. What do I do?

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  • Anonymous May 07, 2008

    I have the same problem, tried that didn't work.

  • Anonymous May 22, 2008

    error ##343

  • Brenness May 28, 2008

    same problem. Have gone through all maintenance procedures to clean heads. Error message #336. Wait cooling and check printer and press resume cycling through on alarm panel. Print quality has slowly been getting worse over the last few uses but now won't print at all. Sigh !

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  • 30 Answers

Hi,
#334 is an eprom error, try turning it on and off to reset it, if it doesn't work there might be a problem with the main logic board.

Posted on Apr 12, 2008

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1 Answer

Error ##334., its my problem


The error code ##334 represents a EEPROM check error. The manual says this means the Printed Circuit Board may need replacing, however, try this procedure.
Insert paper into machine.
1)To enter service mode press Menu, copy, #
2) Select Test Mode with the + or - keys
3) Press OK
4) Press 8, lcd shows 'Please Wait', after wait, press 3, the lcd then alternates between 3-0 (EEPROM clear), and 3-1 (Purge flag)
5) When EEPROM clear (3-0) shows in lcd, press 0, then OK, then Stop then press the OFF button.

Repeat the above from Step1 to step3
in step 4 this time reset the Purge flag by pressing 0 when 3-1 shows in the lcd, OK, Stop, Off.
If the red fault light is still blinking press Resume.

hope this helps

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1 Answer

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#334 is an eprom error and if turning on and off does not reset it, you have something going on with the main logic board.
http://printer1.blogspot.com/2009/01/canon-multipass-mp730-service-manual.html
Above is a service and repair manual this will assist you to troubleshoot and hopefully repair, although I fear with this type of fault, it needs to be returned to the factory.

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Hloo I need hilp


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