Davin Toscana-C1b, Service Manual

Page: 292 / 365

No. Component Function
MT
Vertical Motor
(DCM2)
Mounted behind the vertical encoder wheel and to the left of the
PSU. This motor, controlled by the rotation fo the vertical encoder
wheel and SENC board, drives the paper rollers that drive the
transport belt.
PCBs
PCB
CCB (Cartridge
Control Board)
Mounted in the cartridge holder behind the right front door of the
printer. This PCB relays signals between the control board on top
of the printer and the ink pump motors that supply ink to the ink
tanks. It also relays the ID chip signals that detect whether the ink
cartridges are installed properly in the correct slots of the
cartridge holder.
PCB CTL (Control Board)
Mounted on top of the printer and below the top cover (protected
by a metal plate). Controls overall operation of the printer,
mainly: 1) image data processing, 2) interface management
(USB, duplexer, bypass tray, PFU, etc.) 3) all sensors, motors,
other devices.
PCB
DIB (Duplex Interface
Board)
Mounted in the duplex unit. This PCB controls the operation of
the duplexer. This PCB also contains the duplexer cover switch
that detects when the duplexer cover is open and closed. The
printer will not operate if the duplexer is not installed properly,
or if the duplexer cover is open.
PCB
Duplexer Detection
Board
Mounted behind the printer. The metal prongs of the DIB contact
this board make the connection between the DIB and the
duplexer cover switch mounted on the DIB. This contact must be
closed for the printer to operate. The duplexer is not an option.
It must be installed at all times, even when printing on only one
side.
PCB
HRB (Head Relay
Board)
Mounted behind the print heads on the carriage. This board
performs many important functions: 1) contains the horizontal
encoder sensor that reads the horizontal encoder (the film strip)
that controls the reverse/forward timing of the horizontal motor
that moves the carriage during printing, 2) relays the readings of
the 1st registration sensor mounted on the left edge of the
carriage, 3) contains a small thermistor that detects the
temperature around the print heads, 4) receives and relays
signals from the ink collection tank to the control board.
Electrical Components
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