The printer electrical system consists of the main controller PCB and lower roll unit PCB and power supply PCB and hard disk drive which are mounted on the

back side of the printer, the carriage relay PCB, the head relay PCB, and printhead which are mounted in the carriage, the operation panel on the right upper cover

and other electrical components such as sensors, and motors.

The main controller PCB manages the image data processing and the entire electrical system, and controls relay PCBs and driver functions.

Carriage relay PCB

Head relay PCB

Operation panel PCB

Lower roll unit relay PCB

Lower roll unit PCB

Power supply PCB

Main controller PCB

HDD

F-2-25

2-37