4-3
Diagnostic Tests and Utilities
HP Designjet 4000/4020 Printer Series Service Manual
Diagnostics Tests
The following is a list of all internal Diagnostics Tests available in the Printer.
Instructions for entering the Diagnostics Tests menu are given on Page 4-5.
1 Scan Axis Test ⇒ Page 4-7
The purpose of this test is to verify the operation of components related to the
Scan Axis.
2 Media Drive Test ⇒ Page 4-12
The purpose of this test is to verify the operation of components related to the
Media Axis.
3 Electronics System ⇒ Page 4-17
The purpose of this test is to verify the operation of the:
îš„ Main PCA (Formatter).
îš„ Printer Configuration.
îš„ Gamut PCI PCA.
îš„ Power Supply Unit.
îš„ PrintMech.
îš„ Interconnect PCA.
îš„ Carriage Communication.
îš„ ISS Communication.
4 Carriage Assembly Test ⇒ Page 4-27
The purpose of this test is to verify the operation of the Carriage Assembly.
5 Sensors Test ⇒ Page 4-28
The purpose of this test is to verify the operation of the following Sensors:
îš„ Window Sensor.
îš„ Printhead Cleaner (PHC) Access Door Sensor.
îš„ Media Lever Sensor.
îš„ Media Sensor.
6 Ink Delivery System Test ⇒ Page 4-32
The purpose of this test is to verify the operation of the Ink Supply Tubes.
7 SVS/Aerosol Fan Test ⇒ Page 4-33
The purpose of this test is to verify the operation of the Service Station and
the Aerosol Fan.
8 Air Pump System Test ⇒ Page 4-34
The purpose of this test is to verify the operation of the Air Pressurization
System (APS).
9 Vacuum Fan Test ⇒ Page 4-36
The purpose of this test is to verify the operation of the Vacuum Fans.
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