Electronics module – HP 250C User Manual

Page 55

330

350C

330

350C

5Ć13

Functional Overview

C4699Ć90000

Electronics Module

The electronics module includes the main PCA, power supply and fan. It is one exchangeable

part; you do not need to open it. Ifyou replace the electronics module, remember to swop

any SIMMs from the old module to the new one.

MainĆPCA Connections

J11 Parallel

J12 Serial

U19 Firmware SIMM

U20

RAM SIMM

Electronics

Module

Front Panel

Cover
Sensor

Media
Sensor

Carriage

Media

Encoder

Media
Motor

Carriage

Motor

J13

Pinch-arm
Sensor

Sensors

There is no bail sensor for the DesignJet 230 and 250C and DesignJet 330 and 350C. There is

no pinchĆarm sensor on the DesignJet 230 and 250C but there is one on the DesignJet 330

and 350C. The following sensors connect to the main PCA:

D The

cover sensor

is a mechanical switch that detects ifthe plotter cover has been raised.

Ifyou open the cover while the plotter is plotting, the plot is cancelled!

D The

media sensor

detects the presence ofmedia. It is also used to determine media size.

D The

pinchĆarm sensor

detects whether the pinchĆarms have been raised. The servo

processor uses the sensor to determine the pinchĆarm position during the initialization

sequence.