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

Page 310

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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