DUPLO SEIKO CORPORATION Duprinter DP-330, Service Manual

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76
c
Paper Feed Section
chap.2
(4) Elevator lower limit SWitch
Description
Circuits
Operation
This is a micro switch that senses the lower limit position of the feed tray.
When the feed tray rises, the bracket disengages from the switch and the switch closes. When the feed tray
descends to its lower limit position, the bracket engages the switch’s actuator, opening the switch.
If the elevator encoder sensor does not detect
"photopassing \ photointerrupting"
or
"photointerrupting
\
photopassing " within 2 seconds of sending of the LOWER FEED TRAY
command, the error "
E002
" (elevator lock) is displayed.
LOWER FEED TRAY
command, error
E002
(elevator
lock) is displayed.
Elevator lower limit switch
descent(push):OPEN
Light blue
Light blue
CN4-20
-21
5V
5V
0
1
2
M a i n P C B u n i t
440W17e
Elevator motor
Actuator
440312
Elevator lower
limit SWitch
2
Lower limit position
Gear
Gear
Elevator encoder sensor