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Personal Laserwriter 320 - excess toner on test page?

TimHD

Well-known member
Hi

I recently acquired a Personal Laserwriter 320 and have done a basic (not complete) pull apart and clean up of the printer (as it was printing test pages with excess toner). My first test (before disassembling) got jammed and looking inside, the old toner cartridge was leaking toner everywhere which likely contributed to the test page jamming in the fuser assembly.

After re-assembling (with new toner cartridge) and printing the first Test Page, it was still largely just a lot of black toner (normal for first use of a new cartridge?), though within a few prints things calmed down and the text and images became visible (nb: earlier prints saw some images repeating along the page??). Nevertheless, even after things settled down, the test page still had excess toner - mostly at the start/top of the page, getting lighter as it progresses, but the next page once more starts quite dark, so I don't think its a case of printing more pages to get it clean. (see image below).

If I recall correctly how Laserprinters worked, it seems that the black toner is getting to the page but the process which forces the toner to bond with the page where it needs to, seems to be broken with all that toner sticking to everything rather than exiting the fuser area!

What's next - replacing the fuser assembly (922-0026) or possibly the fuser's fixing film assembly (922-0451) or is the toner not escaping as it should, so possibly, it's the Laser/ScannerAssembly (661-0027) at fault? (See last page of the manual for the part nos - http://tim.id.au/laptops/apple/misc/plw_300.320_lw_4.600_ps.pdf)

Some of these parts can be sourced, but prefer I went after the most logical one first, given I want to limit the cost of this refurb. Any suggestions welcome.


 

Elfen

Well-known member
Somewhere when you open the case to insert the cartridge, there is a dial you can get the toner concentration to a lower setting. It might be a green or black knob. When you find it, twist it end to end and then somewhere in the middle.

 

aplmak

Well-known member
It's the cartridge... swap out the cartridge.. the wiper blade in it has probably gone bad..

 

TimHD

Well-known member
Thanks, seems we're getting warm.

'

It's the cartridge... swap out the cartridge.. the wiper blade in it has probably gone bad..
By 'cartridge' - do you mean the toner cartridge? It's new and fine, and the previous toner cartridge did similar, so not sure it's that...

bad image roller.
By image roller, do you mean 076-0168 Transfer Roller Assembly?

 

trag

Well-known member
I would search around on fixyourownprinter.com a bit.

Also, was the print engine in the 320 used in any other more common printers? Especially, an equivalent HP printer. HP's service manuals have fairly comprehensive troubleshooting sections.

 
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