HP Designjet T2300 disjointed vertical lines

[theengel]

after the belt holder toward the carriage was broken.

I can't picture what you mean here.

[theengel]

And what does "mend" mean... did you fix the broken parts or replace them?

[D_L_P]

Hellow ,
HP Designjet T2300 disjointed vertical lines.
Тhe belt and encoder strip are changed.
I do not know where the problem is.

Whats the ribbon cable look like? If the mechanical things like BlackCat mentioned have been checked, seems those images could be caused by something digital. Could there be a flaw or crack in the ribbon cable messing with the signal?

Maybe reseat the memory just in case.

[Kiran Otter]

Are you sure you have the belt routed through the carriage correctly? It's easy to get it wrong. Make sure if you hold the belt, that you can't move the carriage independent of the belt.

Are you sure you have the belt installed correctly? Make sure the longitudinal grooves are going around the motor.

Maybe take some pictures so we can see the belt orientation.

FoxitReader_2018-12-05_09-23-56.jpg

Kiran

[Lance15]

I use a dental pick to clean the rubber from that motor gearing.

Sent from my SM-G955U using Tapatalk

[tullamore75]

And what does "mend" mean... did you fix the broken parts or replace them?

CH538-67044-C Designjet T770, T1200, T790, T1300 Carriage Repair Clip

[Kiran Otter]

Ah. I'm taking a guess that the clip is part of the problem. It's a great idea by LPS but.. I don't know how well it works. It's certainly cheaper than a new carriage.

Again, make sure you can't pull the belt independent of the carriage.

Kiran

[tullamore75]

Ah. I'm taking a guess that the clip is part of the problem. It's a great idea by LPS but.. I don't know how well it works. It's certainly cheaper than a new carriage.

Again, make sure you can't pull the belt independent of the carriage.

Kiran

The belt does not move from the carriage. Tomorrow I'll take pictures.

[tullamore75]

I can not pull the belt independent of the carriage , because the conection between is very strong.
I’ m not sure the problem is in the carriage , and also it is not very cheap to test it.

[Kiran Otter]

Yikes.. that looks like some desperation went on. I would replace the carriage if it was me.. it's $210 from LPS, or $267 from HP. And that's for a complete carriage with the PCA and line sensor, cutter, etc.

Is the rear bushing in place? Did you tamper with the carriage bushings at all? How much can you move the carriage around when it's installed? Can you turn it left or right as it faces you?

The printer is laying down ink in both directions of the carriage, but somehow it's not in the same exact spot in both passes, so the lines become disjointed or images become ghosted. So somehow the carriage is either getting turned slightly.. or the registration of its position based on the encoder strip and sensor, is off. I guess make sure the carriage PCA is securely mounted and not moving around either, since the encoder sensor is mounted to it.

The rear bushing looks like this (this is a 500 carriage but it's the same bushing):

Rear carriage bushing.jpg

I don't know what else to suggest.

Kiran