Quick Reference Service Manual
9
HP DesignJet 430, 450C and 455CA Printers
Electronics Test
Purpose Ć Verify the operation of the FIBIS Column address and the shuffler.
In service mode 1, press Electronics Test (Media Source and Reprint Keys).
If the test passes, the Sheet LED (LED O) will light up.
If the test fails, the Sheet LED (LED O ) will start to flash.
If the test fails, replace the Electronics Module.
Bail Test
Purpose Ć Tests the operation of the bail system, Service Station and the YĆaxis by engaging
and disengaging the bailĆlift mechanism and capping/uncapping the cartridges.
In service mode 2, press Bail Test (Setup Key).
If the Printer does not raise the Bail Assembly then the test has failed.
If the bail fails the test, replace the BailĆlift mechanism.
Electrical Test
This tests the operation of some of the electrical components of the electronics module.
In service mode 2, press Electrical Test (Form Feed Key).
If the test fails, an error code will appear on the frontĆpanel. Refer to System Error Codes
section in order to correctly troubleshoot the failure.
Servo/Encoder Test
The servo/encoder test performs the MediaĆaxis and CarriageĆaxis encoder test and also
records the maximum friction detected in the EEROM, which can viewed on the service
configuration plot.
In service mode 2, press Servo/Encoder Test (Media Type Key).
To view the results of the test, you must print the Service Configuration Plot (Print Quality
and Media Type keys).
If the test fails, an error code will appear on the frontĆpanel. Refer to System Error Codes
section in order to correctly troubleshoot the failure.
Service Monitor (Data Display)
The service monitor is useful to find out why the Printer is not plotting what you expect it to
plot. Instead of plotting the drawing that you send, the Printer prints the beginning and end
of the code that would otherwise have been used to plot the drawing.
In service mode 2, load a sheet of media (A3 size or B size minimum) in portrait orientation
and press Service Monitor (Media Type and Media Source Keys).
Send the file from the computer through the serial or parallel ports (Ready LED flashes).
Wait until the computer has indicated that it has sent the file (Ready LED continues to flash).
While the
Ready LED is flashing, press Service Monitor (Media Type and Media Source
Keys) again.
