Davin J012, Service Manual

Page: 322 / 365

The picture above shows the horizontal driver gear [6] of the horizontal drive motor [7] mounted on the
left rear corner of the printer behind the duplex unit.
Envelope Selector
Move the envelope selector [1] to adjust size of the gap between the print heads and the surface of the
paper.
Pushing the lever to the back moves the print heads slightly away from the surface of thick paper and
envelopes. This prevents chaffing the printed surface and smearing ink.
A cam operates when the envelope selector pushed back for printing on thick paper or envelopes. This
moves a guide rod to create a gap about 0.8 mm wider than the gap for normal printing. Normally, this
lever should be set forward for printing on normal paper.
When the envelope selector is pushed back, this raises a feeler into the gap of the carriage position sensor.
When the envelope selector is pulled forward, the feeler leaves the gap and switches the sensor off. This
mechanism is used to detect the up and down position of the carriage and print heads.
Carriage Drive
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6