Ribbon Fault and Maintenance

Ribbon Fault and Maintenance
1, breaking the ribbon - a printer ribbons tension is too large, pull off the sutures or word hammer smashing ribbon cause ribbon rupture. In the former case can be broken part cut, sewn back good; the latter case, as long as you can change the ribbon.
2. ribbon is jammed - off the wire edge ribbon, easily wrapped ribbon round after fluffing led ribbon round cards, ribbons not properly retract the ribbon cartridge. The solution: First, open the printer cover, turn the ribbon discharge interlock lever arm and hammer open, end ribbon belt ribbon cassette gently back, and then close the arm with the hammer on the ribbon row interlock handle, turn on the power, the machine will be in self-test ribbon Replace the ribbon cartridge.
3, ribbon capstan drive belt worn or broken - this failure is due to drive belt or chain of characters used for too long caused friction drive belt. The solution is to adjust the position of the character chain, it is no longer friction drive belt; already broken, replace it.
4, ribbon motion sensing signal interruption - to check if ribbon motion sensor signal line has been damaged, if broken, replace the signal line; then check the interlock signal conversion board Ribbon motion sensing line at J6 socket whether damaged or not, replace or plugged signal lines