Lres (Carriage Position) Detection - Fujitsu DL7600 Maintenance Manual

5.2.1.3 LRES (Carriage position) detection

The left and right carriage positions are detected using one LRES sensor provided on the back of the carriage and
the left and right shield plates provided on the upper stay. The shield plates are different in length in the
direction in which the carriage moves.
The LRES uses a photo interloper (packaged device include LED and photo transistor) and detects the presence of
the shield plate, i.e., the
Left shield plate
Upper stay
interrupted state and the transparent state.
LRES sensor
(When LES detect)
Shield plate
LRES sensor
Figure 5.4 LRES detection
LRES sensor
(When RES detect)
LRES sensor
Left shield plate
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Right shield plate
Right shield plate