Question about HP DesignJet 430 InkJet Printer

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How do I replace the Carriage belt for the DesignJet430?

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  • HP Master
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Hello, here are the instruction straight from the HP support we site.
The belt is not that hard to replace. You have to remove the center cover first. Using a flat blade screwdriver pry the right most clip away from the top and slide the cover to the left and it will come off. If you have a roll feed attached you will have to remove the 2 torx T20 screws one on each side and slide the roll feed about 1 inch away in front. Next remove the blue power button on the right side. It just pulls out. Now for the right cover you just pry the bottom away on the three sides and at the same time lift in an upward motion. If you cannot pry it away use the flat tip screwdriver to pry the little clips away in the center on each side. Carefully lift the cover up and look inside and you will see two latches which hold the control panel in place. Squeeze the latches towards each other and the control panel will separate from the case. Let the control panel hang down by the ribbon cable. Next remove the left cover doing the same as with the right and it will lift straight up. Once you have removed the covers you will have to remove the spittoon on the right side. It is held by one screw (torx 15) towards the front. Just watch as you remove it to see how to put it back. Just be careful of the wire that is usually looped thru it on the left. Next you have to move the trailing cable out of the way from the holding clips by the motor and on top and push towards the rear of the printer. Next you will have to remove the encoder strip. It is held in place by two nuts on the right side. Remove the nuts and push the metal bracket towards the other side of the printer and you should be able to release the cable. Next remove the bracket on the left side that holds the encoder strip. When you remove the bracket, slide the encoder strip away from the carriage assembly and put it someplace safe. It can be easily damaged or bent. Next you have to remove the bracket that held the encoder strip-fastening bracket on the right side. Again it is held by one screw (torx 15). Now you can remove the cutter to the right and off the frame. Make sure the carriage assembly is all the way to the left and remove the ink cartridge(s) from the carriage and flip up the top bracket from both sides that covers the trailing cable. Just look at it and you will see how releasing the ends outward with release it. Just remove the trailing cable connector from the carriage. Next put your hand around the motor on the right and push gently in and to the left to release tension on the belt and remove from the motor shaft. Remove the belt from the left side pulley and slide the carriage off the frame on the right side. Turn the carriage over and you will see how the old belt was held and just remove the old and put on the new. You will want to remove any crud that has accumulated on the pulley and motor shaft. This is very important, as not doing so will result bumping action. I would also put a light coat of oil (Tri-flow or similar) on the rail that the carriage moves. Reassemble in reverse. You will have to attach the belt to the pulley side first and then pull to the motor and slide the other end onto the shaft. The encoder strip will be a little tricky. You will have to flatten the end where the nuts were and slide the strip thru the back of the carriage and out the other side. You will know you have it right if the carriage moves freely. If the carriage does not move freely the encoder strip is in wrong and just try again. It is a lot easier then it looks. You can test your installation before putting on the covers by using the blue power button sliding it on the side of the control panel to defeat the open cover switch. Press the power switch in with a screwdriver and test. You will also want to use plain water on a lint free cloth and clean the encoder strip. You also may want to use the same to clean the bottom of the carriage assembly by the sensor and the contacts of the print cartridges. Also look at the condition of the spittoon on the right. Black ink builds up and if it is very high, get yourself some rubber gloves, disassemble and clean most of the ink out of it. You can also use a cloth dampened in water to clean the service station on the left side. -->

Posted on Nov 12, 2010

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Problem Description: Carriage-Axis shutdown.
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How can I replace the belt for the ink carriage


Here is an HP Support Forum where a user has posted a detailed procedure for the belt replacement.

http://forums11.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=846691

The Service Manual is needed. It's available at:
http://www.hylink.com/PrinterManual.html
Designjet 430, 450, 455C - Service Manual
DesignJet 430, 450C, 455CA - Quick Reference Service Manual

As mentioned, it's a delicate and time consuming operation. I replaced my belt two years ago with little problem. (Be sure to clean the old degraded belt gunk off the drive pully too!)

It's not a job for "Beginners". More like "Intermediate" or "Advanced".

Good Luck!

This is the part I ordered. It was $15
WARNING: THIS IS FOR THE "E-SIZE" MACHINE.
If you have the smaller one, you must research the part number for that.
C4706-60082 icon_greencheck.gif icon_camera.gif
Carriage belt (E-size) - Long/wide belt attached to the carriage 15.00 0.00 15.00 1 15.00
C4706-60082 icon_greencheck.gif
Carriage belt (E-size) - Long/wide belt attached to the carriage

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2. The Carriage is bumping into the Service Station. If the carriage
is stuck at the right hand side of the Printer and cannot be moved
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Station cannot uncap the Printheads. In this case replace the
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http://www.fixyourownprinter.com/forums/inkjet/36780

Fifth post down.

I changed the carriage belt using these instructions.

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CANON IMAGE PRO W6400


This error code is a Carriage motor error. Below is the outline for what to check and what to repair/replace. Good luck.

Cause
This is displayed when a jam or other physical problem puts an excessive load on the carriage motor so that the carriage could not operate.
This is displayed when the carriage motor could not reach the prescribed speed within the prescribed time.

Probable problem locations
Foreign object in carriage movement path, carriage rail, carriage belt, linear scale, linear encoder, carriage motor, engine controller, system controller


Remedy
1. Carriage movement path check
Remove any foreign objects (jammed sheet) in the carriage movement path.
2. Carriage rail
Use rail cleaner to clean the carriage rails if a visual check reveals that they are dirty.
3. Carriage belt
If a visual check reveals slack in the carriage belt, remount the belt.
4. Replace the linear scale.
5. Replace the linear encoder.
6. Replace the carriage motor.
7. Cable connection check
Replace the cable between the carriage motor and engine controller if the connection is not functioning normally.
8. Replace the engine controller.
9. Replace the system controller.

Feb 12, 2008 | Office Equipment & Supplies

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