GeoffB17
Veteran Member
Still sounds like the cable (incl the connectors) or the circuits inside the printer closest to the connector. Most other things would mess with the self test.
Note, if there is something up with the cable, touching it/moving it at any time while printing will change things, esp if there are any sort of funny connections inside. If other cables are similar, then extra checks on the connectors, or inside printer.
Check the board inside the printer next to port/socket. Any capacitors, esp electrolytic. Any sign of leaks, or a component looking odd. Funny capacitors of any sort will make a circuit do wierd things, while 'seeming' to still work.
Can you print a small doc, and touch nothing. Then print again, while moving the cable about. Any difference?
Geoff
Note, if there is something up with the cable, touching it/moving it at any time while printing will change things, esp if there are any sort of funny connections inside. If other cables are similar, then extra checks on the connectors, or inside printer.
Check the board inside the printer next to port/socket. Any capacitors, esp electrolytic. Any sign of leaks, or a component looking odd. Funny capacitors of any sort will make a circuit do wierd things, while 'seeming' to still work.
Can you print a small doc, and touch nothing. Then print again, while moving the cable about. Any difference?
Geoff