Oki ML490 Maintenance Manual - Page 112
Replace Control Board
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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 Control Board 42114101 Rev.1 112 /
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42114101
Rev.1
112 /
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 Control Board