CLJ 2500 - Caurosel not aligning for dev unit install

[scoobysteve]

Hi All,

I'm working on a CLJ 2500 that has an alignment issue with the caurosel not aligning the groves with the top cover, thus not allowing me to input the toner cartridges.

I seems to align fine for the yellow and black cartridges however it just doesnt do it for the magenta and cyan.

I've had the machine apart and have watched the caurosel turn and i've noticed that the solenoid does kick in at the right time, with the arm of the solenoid hitting the notch in what i would call a cam or gear? however it tends to slip as oppose to release and allow that one extra turn before the arm on the solenoid is able to hook into the 2nd notch (which is located immediately after the first). Because of this extra turn, the groves do not line up.

I have manually released the solenoid so i can put in the developer units however because the magenta and yellow units do not line up, the machine is failing to print the two colours (must have something to do with the e-label) - althought i does detect all four units in the machine.

I'm thinking of replacing the solenoid first (as it will probably be the cheapest and easiest to replace) however if you have any other thoughts or experience with the problem, then please let me know. thanks in advance.

[prntrfxr]

The following is my service note on this problem. Hope it helps you.

Symptom:
Fading on one side
Blank pages

Problem:
One cause is defective toner cartridges, but more it is more frequently caused by misalignment of the cartridge carousel assembly. If a cartridge is installed incorrectly a misalignment can occur.

Resolution:
On every cartridge there should be arrows on the right and left sides and they should line up with the arrows on the print cover. If they don’t line up, the carousel is misaligned.

I. DIRTY SCANNER LENS – Blow out toner/dust from scanner mirrors. It may be necessary to remove the scanner to clean with air. Do not touch mirror or lenses.
II. TONER CARTRIDGE NOT INSTALLED CORRECTLY - Remove the toner cartridge and reinstall correctly. Inspect cartridge for damage and replace if necessary. If the problem is not corrected, perform the carousel realignment procedure below.
III. CAROUSEL OUT OF ALIGNMENT – Perform realignment procedure.
1.) Remove all covers
2.) Release carousel brake (use small screwdriver)
3.) Line up yellow carousel slot (Y on cartridge and Y on carousel)
4.) Identify the 2 black gears on the main drive shaft and 2 white gears that interlock with the carousel gears.
5.) Rotate the carousel and line up the 2 pins on the white gears with the marks on each of the black gears. The mark should be in the middle of the 2 pins on each of the gears.
IV. BLACK PLASTIC BUSHING DEFECTIVE – RB2-9808 (1500 & 2500 ONLY) or RB9-0879 (2550, 2820, 2830, & 2840)
V. CAROUSEL ASSEMBLY DEFECTIVE – RG5-6910 (1500 & 2500 ONLY) or RG5-7587 (2550, 2820, 2830, & 2840)
VI. CAROUSEL DRIVE ASSEMBLY DEFECTIVE - RG5-6911 (1500 & 2500 ONLY) or RG5-7842 (2550, 2820, 2830, & 2840)

[blackcat4866]

I've align these carousels before, but I don't have a nice technical description of the operation.

It may not be necessary to do it this way, but I removed the laser/top frame to get full view of the carousel. It's relatively easy to jump the gears along the right side of the carousel to get the slots to line up.

If there's an easier way to do this I'd like to hear about it. =^..^=

[Rob Sandberg]

As a printer tech my basic anwser to a CLJ 2500 repair is.....



Replace the printer!
These were junk to start with.

Just a thought.

Rob S

[leroyal]

	Quote:			Originally Posted by Rob Sandberg
	As a printer tech my basic anwser to a CLJ 2500 repair is..... Replace the printer! These were junk to start with. Just a thought. Rob S

Add the 3600-3800 to the pile.

[scoobysteve]

thanks for the 3 sets of advice.... I would much like to get rid of the printer but sometimes the clients just dont want to part with it.

Just a question in regards to the markers on the gears. Is there only one initial mark/pins for alignment as opposed to one for each colour?

If there is only one sets of pins/markers, i would find it strange that the machine is able to line up for two of the cartridges then fail to do so on the remaining two.

anyhow thanks so so much for your advice.. i will try it out.

[blackcat4866]

Just a question in regards to the markers on the gears. Is there only one initial mark/pins for alignment as opposed to one for each colour?

If there is only one sets of pins/markers, i would find it strange that the machine is able to line up for two of the cartridges then fail to do so on the remaining two.

I don't know about these pins/markers. I just lined it up visually, jumping one tooth at a time. Your description doesn't entirely fit with the symptoms I saw. On the ones I saw all the cartridges were equally misaligned, in equal amounts.

I suspect that the worn carousel bushings could account for your situation. Worn bushings might account for a certain amount of wobbling. Don't forget to allocate 2-3 hours of screwing around to get those bushings installed, especially if you've never done it before.

The labor cost alone might make the repair too expensive. I'd turn it over to sales & give them a chance at it.

[scoobysteve]

thanks again for the help.. i've already spent an hour there trying to identify the problem and if it is going to get more complex, then you are right.. it will be better of getting sales involved. no one wants to pay for the labour costs.

[scoobysteve]

update... i decided to go back and give it another shot... i disassembled the machine re-aligned the pins - it was out about two teeths...

I put it back together ensuring the pins were still aligned and turned it on... without any toner cartridges installed, it rotates and aligns perfectly for all 4 cartridge slots. the minute i put a cartridge in, it does the whole slippage again...

i'm out of ideas on what is causing it but i will try a solenoid and then if that doesnt fix it, i'll get sales involved.... by the time you start quoting assy and labour together it does generally get closer to being uneconomical to repair.

[prntrfxr]

	Quote:
	i'm out of ideas on what is causing it but i will try a solenoid and then if that doesnt fix it, i'll get sales involved.... by the time you start quoting assy and labour together it does generally get closer to being uneconomical to repair.

see IV, V, & VI above