HP 250C - Manual (Page 169)

330
350C
8Ć35 Troubleshooting C4699Ć90000
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
Carriage Carriage test, Electrical test, Modular test
Carriage motor and drive system (including belt,
pulley and slider rod) Carriage-axis test, Bail cycle test, Modular test,
Bench run
Cartridge identification Carriage test, Modular test
Cartridge nozzles Carriage test, Modular test
Communication between computer and plotter 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, Input/output test,
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 Carriage-axis test, Servo/encoder test, Modular
test, Bench run
Front-panel keys and LEDs Front-panel test, Modular test
Media-axis encoder and cable Servo/encoder test, Media-axis test, Modular test,
Bench run
Media motor and drive system (including drive
roller and overdrive) Media-axis test, Modular test, Bench run
Media sensor Sensors test, Modular test
Pinch-arm sensor Sensors test, Modular test
Optical sensor (on carriage) Carriage test, Modular test
ROM Electrical test, Power-on tests, Bench run
Service station Bail cycle test
Trailing cable Electrical test, Power-on tests, Bench run