HP 220 - Manual (Page 54)

5Ć22 Functional Overview C3187Ć90000
Main PCA
(Part illustration ' page 10Ć9.)
PCA and Sensor Interconnections
Centronics RS–232
Media-axis encoder
Front panel PCA
Bail sensor
Window sensor
Media sensor
Pinch-arm sensor
Media motor
Carriage motor
MAIN PCA
Carriage PCA
Stepper motor
Fan
Power supply
SIMM socket
The main PCA contains most of the plotter electronics, that is:
D Main processor system
D Servo processor subsystem
D Some power components