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8 Line feed trouble
Turn the power off, and rotate the platen manually.
Does the platen rotate smoothly?
Yes No
Is the platen gear (L) broken?
No Yes
Replace Platen assembly.
Is the LF motor idle gear broken?
No Yes
Replace the LF motor assembly or LF idle gear.
Is the platen gear (R), idle gear or change gear broken?
No Yes
Replace the gear.
Set change lever to the rear position.
Does the platen rotate smoothly?
No Yes
Replace Tractor feed assembly.
Replace LF motor assembly.
Replace LF motor assembly.
Remedied?
No Yes
End
Replace Driver board.