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4-5. SW-1703 Board
The SW-1703 board mounts the ON/STANDBY switches. It also performs the relays between MA-201
board and SE-1142/1143 boards and between MA-201 board and stepping motor/DC motor.
4-6. SE-1142 Board
The SE-1142 board mounts the sensor circuits below. It also performs the relay between SW-1703 and
SE-1143 boards.
. Door sensor
. Head position sensor 0
. Head position sensor 1
. Light-emitting block of paper tray sensor
4-7. SE-1143 Board
The SE-1143 board mounts the sensor circuits below.
. Light-emitting block of paper front sensor
. Photosensing block of paper tray sensor
4-8. SU-167 Board
The SU-167 board is used to fix the DC motor.
4-2 (E)
UP-D898DC
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