Carriage Unit - Ricoh MP CW2201 Field Service Manual

• The horizontal encoder sensor (4) brackets the top edge of the horizontal encoder strip (5), which
stretches behind the drive belt and across the platen. The sensor reads the timing notches from the
strip as the carriage is driven left and right by the horizontal motor. This controls the operation of
the motor and movement of the carriage unit during printing and other operations, such as paper
registration and image registration.
• LED (6) lights during operation to prevent users from opening the front cover by mistake.
• The DRESS sensor (7) performs paper registration and image registration while the carriage unit is
moving during paper feed.

Carriage Unit

No.
1 Horizontal motor
2 Drive belt
3 Head lift sensors
4 COM
5 Print head thermistors
6 HRB (Head Relay Board)
7 Carriage unit
Item No.
15 Print head (Y2M2)
16 HT6 (Head Tank M2)
17 Print head (C)
18 HT5 (Head Tank C)
19 HT4 (Head Tank M1)
20 Print head (Y1M1)
21 HT3 (Head Tank Y1)
Printing
Item
841