Looking for advice to repair a sp-300. Cyan had a manifold crack. replaced manifold, cyan wouldn’t print more than a couple bars in the test print. Replaced head, ribbons, caps , reset head info and head rank. Cyan and black won’t print. found a blown fuse, replaced fuse, black is perfect, no cyan. Swapped ribbons to other head, so magenta.yellow thinks it’s black, cyan. Now cyan, black, magenta works fine, no yellow. Thoughts
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Need Help Sp-300 no cyan
- Thread starter Farren
- Start date
Thanks Terry. Both heads will work if I use the right hand (yellow,magenta) circuits as drivers. If I call the “circuits” 1 (y), 2(m), 3(c), 4(b) then using 1/2 for the y,m head will fire y&m. If I use the 1/2 on the c/b head I get c&b. if I use 3/4 to drive y/m I get m only. If I use 3/4 to drive the c/b I get b only. so there is something wrong with circuit 3 or maybe the firmware for curcuit 3
Hi Terry,
what should I be looking for?
Solventinkjet
DIY Printer Fixing Guide
This indicates more severe damage to the main board unfortunately. Most likely a blown transistor.
That was what I was wondering too. Not opposed to replacing a transistor or 10 but…..where to start and my workbench doesn’t have the room and I don’t have the time right now..
Appreciate the help. Gonna start looking for a board.
To check both long cables, short cables, both channels of the printhead board and both channels of the main board prior to purchasing parts Try to isolate where the problem exists first.