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
J1
J2
J3
J5
J6
J8
J7
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.