Introduction
hello all,
today we wil take down the canon pixma ip4850.
This printer has the wel know problem : B200.
Most of the time this is a printhead problem.
you will see how you can replace the printhead and other parts. enjoy !
be carefull : its not an easy guide!
Tools
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this printer has the well known B200 error.
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we will take the printer apart.
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first step : remove all the loose parts.
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remove the panel at the back.
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no we will remove the printhead and the cardridges.
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To remove the printhead you have to plug in the printer again and open up te front panel (like you have to remove the cardridges).
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to remove the printhead you have to pull the levar up (grey) , be carefull its very rough to pull it up.
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remove the printhead, if you only replace the printhead the guide stops here. be carefull for the pcb board, if you only clean the printhead do it carefully. clean it with destilled water, but do not touch the PCB.
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now we will remove the power supply.
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you'll find clips to loose the power suply . On the picture (number 1) you see how you do it. you'll here the clicks.
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pull the power supply out of the printer, and you will see the white and blue wires. you will see this wires later in the printer again.
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remove the side panels
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you can remove this by clicking the panel of.
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search for the arrows on the upper deck of the printer. see picture 1
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than click the panel losse at the bottom of the printer.
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remove the upper panel by clicking two clips. at the backside.
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normaly , if my guide is good enough, the printer looks like picture 3 now.
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remove the printer paper roll
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remove the red circled screws.
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this step and the next is actualy 1 big step.
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remove the 2 screws. one on a PCB board and the other in the white plastic.
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remove the long PCB , remove the three thick screws
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the pictures here are to remove the other metal plate, you'll see the colored wires running trough. remove the plastic and metal frame
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in this step we will remove the panel and PCB of the power button.
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remove the visible screws and pull the plastic frame off.
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remove the metal plate and screw behind the PCB board
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remove the plate and remove the hidden screws
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gently remove the ink tubes.
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there is still inkt left in the tubes so use cotton towels or tissues.
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in the last pictures you will see all the parts like the motor PCB boards, power button print head holder ...
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hope this guide helped you out.
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3 comments
Fixing back the printer but the connector wires are damaged in the ends any better way to get the connectors working again?
which connectors do you mean? soldering?
Kevin D -
unfortunately the Pixma MP printers and AIO are one of the most complicated to repair and undocumented in service guides printers in the world :(