Genicom atb 1600

The printhead is purportedly in short supply. https://www.sinca.biz/printhead-18w-remanufactured-p-8699.html

https://www.impactcomputers.com/genicom-genicom-3800-printer-parts.html

https://printronix.com/emea/wp-content/uploads/sites/2/2015/01/TB-0004_Genicom-34XX-35XX-39XX-3860-and-3880-Serial-Printer-End-of-Support-EMEA.pdf

Can't find a video on the printhead removal but here is one for an Epson that may be useful. Epson 3880/3800/P600/P800 Damper and Print Head removal - YouTube

https://manualsbrain.com/en/manuals/1194883/

this is a charge issue - a simple fix would be to remove the pcu and clean round its outside and then clean the contacts to it inside the machine - if this doesnt work the pcu needs stripping down

I am afraid the TI 8920 is a rather old model of printer, with the Texas Instruments brand or printer long discontined and with the demise of Genicom there are no Windows 2008 drivers for this printer.
You may wish to use the Generic Text only printer driver inculded within the Windows Add Printers Wizard, I do not belive there is any alternative

one of the switches is getting stuck

The PCU is the image unit, where it is the fotoconductor drum, in the inferior part it has a flange that releases the image unit to remove it. It is possible to be added by the later part has a cover of plastic right transparency to means.

you need to replace the color PCU and black PCU to get rid of the black streak.You can download the manual here:
http://www.ricoh-usa.com/downloads/downloads.asp?tsn=Ricoh-USA&path=http://support.ricoh.com/bb_v1oi/html/oi/rc2/model/cl3500/cl3500en.htm

yes the 1600 and 2000 dont have it the easiest way to check is take pcu unit out if it feels very light theres no dev in it

change your phone software

If its the caps that cover them Nikon in your country can order them. They take about six to eight weeks if they are not in stock. If its the actual eyepiece lens an all you would need to have purposfully removed them and in doing so destroyed the waterproofing. If its the caps contact Nikon. You can also download the instructions from their website.

Dev. Change Process

1. Check that Dev. unit has the lastest seals.
2. replace dev. material.
3. Dump dev.
4. add new dev. material.
5. Hand rotate the dev. unit 10 times.
6. reinstall the dev. unit into machine.
7. cover the toner inlet opening with a piece of paper
8. insert PCU unit.
9. turn the machine on.
10. When machine reaches ready -- enter SP modes and perform SP-2801 (2 times)
11. open the right cover of the machine. Cheat the right cover switch. Examine the drum as it rotates. Afew bands of toner and the ID pattern will be developed on the drum. The drum should be clean -- a slight dusting on the drum is OK.
12. Perform SP-3001 -- ID sensor initial setting.
13. ** Important** remove the PCU unit. Empty the toner from the PCU by sliding the shutter on the bottom of the PCU to the side and tapping the PCU.
14. reinstall the PCU.
15. Run test copies.

Pls rate -- thank you