Question about Canon MultiPASS MP390 All-In-One InkJet Printer
Error ##334 suddenly came up on display! tell me what should i do
1. Press the "menu": Key
2. Press "Copy" Key
3. Press "#" Key
4. Scroll thru the menu headings until you come to "Test Mode" - 12th heading or select (-) as a short-
cut to the last setting.
4a. Press “Set” and the display shows:
Test Mode  – 
4b. Press “8” and the display changes to:
Test Mode  – 
***note*** you have to wait until the display changes
Then the display changes to:
8: PRINTER TEST
5. Then Press the "3" button and the display shows:
8 – 3 : EEPROM Clear
*** the display scrolls to  : INK COUNT
 : 2PURGE FLAG
6. Press "0" button – for INK COUNT
7. Press the "Stop" button
8. Press Off then On to set new changes.
9. Printer feeds a blank page after it is turned on again.
This should Reset the printer and remove the WRONG CARTRIDGE error and save you a few dollars.
Replace all the Ink Absorbers.
Reset the counter to zero.
Replace the printhead. QY6-0042-000 (now QY6-0064-000)
Should cost you about $54 if in the US.
This will only work a few times. Eventually, it will fail to reset
and you will have to replace the Printhead. I hope this helps.
Posted on Nov 18, 2008
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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