Ricoh J012 Service Manual page 359

HRB (Head Relay
PCB
Board)
HVPS (High Voltage
PCB
Power Supply)
PCB ID Chip 1
PCB ID Chip 2
PCB ID Chip 3
PCB ID Chip 4
Multi Bypass Tray
PCB
Control Board
OPU (Operation Panel
PCB
Unit
SM
CÓPIA NÃO CONTROLADA
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.
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.
The identification chip of the black (K) ink cartridge.
The identification chip of the cyan (C ink cartridge.
The identification chip of the magenta (M) ink
cartridge.
The identification chip of the yellow (Y) ink cartridge.
Mounted inside the multi bypass tray. This is the main
control board that controls operation of the bypass
tray and interfaces with the printer.
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.
6-21
CÓPIA NÃO CONTROLADA
Electrical Components
J012/J013/J014