HP 220 - Manual (Page 169)

8Ć21 Removal and Replacement C3187Ć90000
Which Service Test to Perform
The following table indicates the service tests that you can perform on particular assemblies:
Assembly Tested by ...
Bail Bail cycle test
Bail-sensor Bail-sensor test, Bail cycle test
Carriage-axis encoder/motor Servo/encoder test
Carriage-axis encoder cable Servo/encoder test
Cartridge-adjust linkage Stepper-motor test
Cartridge carriage Electrical test
Communication between computer and plotter Service monitor
Double pulley Servo/encoder test
DRAM SIMM Electrical test
Drive belt Servo/encoder test
Drive mechanics Bail cycle test
Drive roller Servo/encoder test
EEROM Electrical test
Main belt Servo/encoder test
Main idler Servo/encoder test
Main PCA Electrical test, Input/output test, Stepper-motor
test, Servo/encoder test, Bail-sensor test,
Media-sensor test, Window-sensor test,
Pinch-arm-sensor test, Bail cycle test
Mechanical interference Bail-sensor test
Media-axis encoder/motor Servo/encoder test
Media-axis encoder cable Servo/encoder test
Media sensor Media-sensor test
Overdrive Servo/encoder test
Pinch-arm sensor Pinch-arm-sensor test
Pinch-arm-sensor cable Pinch-arm-sensor test
ROM Electrical test
Slider rods Servo/encoder test
Stepper motor Stepper-motor test
Trailing cable Electrical test
Window sensor Window-sensor test
Window-sensor cable Window-sensor test
Wiper linkage Stepper-motor test