Circuit Boards And Their Functions; Printer Circuit Boards - Epson AcuLaser CX-11N Repair Manual

Epson AcuLaser CX-11N/AcuLaser CX-11NF Field Repair Guide 9/9/05

CIRCUIT BOARDS AND THEIR FUNCTIONS

Printer Circuit Boards

PWBA MCU (PPL Ref # 12-02-01)
PWBA MCU is the Print Engine Controller. It performs communication with the printer controller (PWBA ESS /Main
Logic Board) and controls the components used to perform printing operations.
LV/HVPS (PPL Ref # 12-02-03)
LV/HVPS generates +24 VDC, + 5VDC and +3.3 VDC throughout the printer and generates the high voltage required
for transferring toner throughout the print process and discharging the OPC Drum.
PWBA HVPS (PPL Ref # 12-01-09)
PWBA HVPS supplies high voltage to the IBT Cleaner, 2nd BTR, and Cleaning Sheet.
PWB ASSY ROT (PPL Ref # 12-01-10)
PWB ASSY ROT creates the drive for the motors based on input signals from the PWBA MCU and supplies the
pulse signal to the motors.
PWBA ESS (PPL Ref # 12-02-07)
PWBA ESS is the Main Logic Board. It converts print data transmitted via an I/O port (network, USB, parallel port,
etc.) and communicates with a host computer. The memory can be expanded up to 512 MB with an optionally avail-
able additional memory.
PWBA Fuser Control (PPL Ref # 12-02-12)
Provides AC Power to the fuser. Also contains the main AC input fuse and AC filter circuits for the power supplies.
OP PANEL (PPL Ref # 01-01-17)
OP PANEL displays the printer status on the LCD or by LEDs. Printer operations are performed by depressing the
buttons on the OP PANEL.
Printer Component, Software Item, LCD Display, Printer Button
Page 27.