Printer circuit board locations – Lexmark 5021-0XX User Manual
Page 310

5-6
Service Manual
5021-0XX
Printer circuit board locations
Name
Function
Engine controller
board
Controls the following printer processes
Fuser temperature control
Laser output control
Operator panel indication
Toner empty sensing control
Error processing control
Interface control
Operator panel
Displays the printer operation status and supports the
manual input switch.
Erase lamp
Discharges OPC belt located in the photodeveloper
cartridge.
I/O board
Relays signals between the controlled parts and
engine controller board and drives the controlled
parts.
Low voltage power
supply (LVPS)
Provides power to control the printer.
High voltage power
supply (HVPS)
Provides power necessary for the printing
process.
Operator panel
Erase lamp
I/O board
Engine controller board
LVPS
HVPS
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