HP 750 - Manual (Page 165)

Troubleshooting C4705-90000 8-47
26. YĆAxis Encoder
The purpose of this test is to check the YĆaxis encoder and its servo loop.
Perform the YĆaxis encoder test as follows:
Load media before performing this test.
1 In the Service Tests submenu, scroll to 26 YĆaxis Encoder" and press Enter.
SERVICE TESTS
26 Y-axis encoder
2 The Testing Encoder Strip" message is displayed on the frontĆpanel while the plotter
checks the encoderstrip
3 If the test passes, the Encoder Good / Press Enter" message is displayed on the
frontĆpanel.
4 If the test fails, the Encoder Bad / Press Enter" message is displayed on the frontĆpanel.
If the encoder strip fails the test:
1 Perform the YĆaxis friction test ' page 8Ć45.
2 Replace the encoder strip ' page 6Ć27.
3 Replace the carriage ' page 6Ć34.