Rice Lake Okidata 320-390-420 Turbo - Service Guide - Manual (Page 96)

Verify:
There shall be slight backlash between gears to allow smooth rotation of gears. (Backlash 0.05 to 0.11
mm)
4-5-1 Ribbon feed
Verify:
Ribbon shall be fed smoothly when the carriage is moved from side to side.
4-5-2 Running load to spacing mechanism
250g or less without a ribbon cartridge
Verify:
Make sure that the power is turned off at the time of measurement.
4-6 Engagement of the double gear and the LF motor idle gear of the Platen Assy.
Verify:
The idle gear of the LF motor and the platen gear (L) and the bias gear of the platen shall be in mesh in
such way that the platen gear (L) and the bias gear rotate against each other to pinch the teeth of idle
gear.
The idle gear stays in mesh with the platen gear (L) and the bias gear and not locked. The bias gear and
the platen gear shall b staggered by one tooth as shown in the drawing.