Electrical Components
SM 6-21 J012/J013/J014
Detailed
Description
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.
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.
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