Description
Efi Raster H652 Repair
Our customer bought used EFI Raster H652 printer and never run it until we go to repair.
The first issue for Raster H652 Repair is printhead issue. When installed all head cables for Toshiba ce4 printhead and print nothing. If remove magenta head cable and then can print cyan and black. Yellow nothing to be print out because no yellow ink in sub tank at all. So we think is magenta printhead was damaged to cause the head board not work. We remove old magenta printhead and put white head in magenta. After replaced Toshiba ce4 magenta printhead, printer can print cyan, black again. Now we can make sure electric parts is OK and then we continue to figure out what’s wrong with ink line at Raster H652 Repair.
Ink line issue is the big challenge for Raster H652 Repair. When we purged ink and a little ink come out, it just had a little old ink in the sub tank and new ink never goes to sub tank. Because I opened yellow sub tank and nothing inside yellow sub ink tank. When opened Raster H652 Repair printer and yellow ink pump should pump ink to yellow sub ink tank but yellow ink pump never start to pump. And then we check yellow ink pump and it’s good to work. I used external power supply 24DC to test all ink pumps and they are good to work. So we think the issue is at sub ink tank. We replaced all 4 color sub ink tank for Raster H652 Repair printer. Just make sure sub ink tank ink level sensor wire must be connected correctly otherwise ink will go to negative tubing to cause big issue.
After we replaced all EFI Raster H652 Repair sub ink tank, we started machine and all ink pumps start to pump ink to sub ink tank but still there is no ink to printhead for all color. We checked all sub ink tank and all new ink were in new sub ink tank. But why no ink from sub ink tank to printhead? Becasue Raster H652 Repair printer sub ink tank level is too low to printhead, and there is too much air in the tubing from sub ink tank to printhead. automatically pump ink is not enough strong power to push ink from low ink level to high level ink tubing. So we opened ink tubing after ink damper, pull ink out manually from sub ink tank and then push ink to the tubing to printhead after ink damper. This manually solution let ink fill ink full ink from sub ink tank to printhead. And then open Raster H652 Repair printer, all ink line issues were fixed. And nozzle fire normally.
Ink line stable is the key to print perfect. Raster H652 Repair printer negative pressure value is -2.4 due to ink level in sub ink tank to printhead level is about one foot. Agfa printher negative pressure value is -3.8 because Agfa ink level in sub ink tank to printhead level is about 2 feet. Next we will focus on negative system. If negative value is very stable at -2.4, and that proves ink line is sealed perfect and no issue otherwise check ink line and negative system.
Lavaink provides technique support and Raster H652 Repair in Great Toronto Area. Toronto, Brampton, Markham, Oshawa, Mississauga, Hamilton, Guelph, Kitchener, London, Niagara Falls, Georgina, Barrie.
Lavaink provides Raster H652 Repair mainboard and EFI Raster H652 head board repair services at the affordable price. We have some parts for Raster H652 Repair old model uv printers such as GS/QS etc.
UV Printer consists three fields for UV Printer Repair
- Ink Line Repair. The most of issues were ink line loose or leaking or Ink Damper, Ink Filter clogged. Agfa ink Line
- Electric Parts Repair. The most of issues were poor connector.
- Negative Pressure System. The most of issues were ink line loose or leaking.
We have over ten years experience in uv printer repair and so we can find out the issues quickly and fix them. We have all uv printer parts in stock to ensure your printer can been fixed within 24 hours.
