Davin J012, Service Manual

Page: 293 / 365

No. Component Function
PCB
HVPS (High Voltage
Power Supply)
Mounted under the top cover and above the transport belt.
Generates the voltages applied to the transport belt that hold the
paper on the belt during printing. Two interlock switches, one
connected to the top cover and the other to the duplexer cover,
prevent the HVPS from operating if either or both covers are
open.
PCB ID Chip 1 The identification chip of the black (K) ink cartridge.
PCB ID Chip 2 The identification chip of the cyan (C ink cartridge.
PCB ID Chip 3 The identification chip of the magenta (M) ink cartridge.
PCB ID Chip 4 The identification chip of the yellow (Y) ink cartridge.
PCB
Multi Bypass Tray
Control Board
Mounted inside the multi bypass tray. This is the main control
board that controls operation of the bypass tray and interfaces
with the printer.
PCB
OPU (Operation Panel
Unit
Mounted under the operation panel LCD and keypad. Controls
the operation of the operation panel. The right front door sensor
is also mounted on this PCB.
PCB PFU Main Board
Mounted in the optional paper feed unit. This is the board that
controls operation of the paper feed unit and interfaces with the
printer.
PCB
PSU (Power Supply
Unit) Mounted under the left front cover. Supplies both 37V and 5.1V
power to the HVPS and all motors in the printer.
PCB
SENC (Sub Scan
Encoder)
A small PCB mounted below and slightly to the left of the vertical
encoder wheel. The vertical encoder sensor is mounted and
positioned on this PCB so the rim of the vertical encoder wheel
passes through its gap as the wheel rotates. The sensor reads the
code on the rim of the wheel to control the operation of paper
feed timing and operation of the vertical feed motor.
Print Heads
PH Print Head 1 Contains 2 ink tanks: M, Y
PH Print Head 2 Contains 2 ink tanks: C, K
Sensors
6. Detailed Section Descriptions
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