Service Tests

Which Service Test to Perform

Use the following table as a rough guide:

Assembly/Feature

Tested by ...

Bail system

Bail cycle test, Bench run, Modular Test

Carriage

Carriage test, Electrical test, Modular test

Carriage motor and drive system (including belt,

Carriage-axis test, Bail cycle test, Modular test,

pulley and slider rod)

Bench run

Cartridge identification

Carriage test, Modular test

Cartridge nozzles

Carriage test, Modular test

Communication between computer and Printer

Service monitor

Cover sensor

Sensors test, Modular test

DRAM SIMM

Electrical test, Power-on tests, Bench run

EEROM

Electrical test, Power-on tests, Bench run

Electronics module

Electrical test, Power-on tests, Servo/Encoder test,

 

Sensors test, Bail cycle test, Front-panel test,

 

Media-axis test, Carriage test, Carriage-axis test,

 

Bench run, Modular test

Encoder strip

Front-panel keys and LEDs

Media-axis encoder and cable

Media motor and drive system (including drive roller and overdrive)

Media sensor

Pinch-arm sensor

Optical sensor (on carriage)

ROM

Service station

Trailing cable

Carriage-axis test, Servo/Encoder test, Modular test, Bench run

Front-panel test, Modular test

Servo/Encoder test, Media-axis test, Modular test, Bench run

Media-axis test, Modular test, Bench run

Sensors test, Modular test

Sensors test, Modular test

Carriage test, Modular test

Electrical test, Power-on tests, Bench run

Bail cycle test

Electrical test, Power-on tests, Bench run

Service Tests

HP DesignJet 430, 450C and 455CA Printers

4-3