Service Modes; Sensor Test Mode - GRAPHTEC CE5000 Series Service Manual

8 SERVICE MODES

8.1

Sensor Test Mode

This mode checks the sensor status. If there is a bad sensor you will observe one of the symptoms in the
table below.
Please check the relevant sensor(s).
Sensor
Y home sensor The pen block hits the right side plate.
Cam sensor The plotter displays "LOAD MEDIA!" when media is already loaded.
Push roller sensor The pen block hits the left side plate.
+X, -X media sensor Media drops out of the plotter.
How to test the sensors
(1) Load an A4 (Letter) or larger size sheet of paper in the plotter.
(2) Turn on the power while pressing the TEST and ENTER keys.
(3) Select the media mode.
(4) Press the PAUSE key to display the menu shown below.
(This menu is not displayed when the main board is new type.)
MODEL SELECT
(5) Press the NEXT key until the following menu is displayed.
SENSOR TEST
(6) Press the ENTER key to display the status shown below.
YL CH PL +XH -XH
Y: Y home sensor, C: Cam sensor, P: Push roller sensor, +X: +X media sensor, -X: -X media sensor
(7) Cover the front media sensor with a piece of paper.
The status of +X changes from "H" to "L".
(8) Cover the rear media sensor with a piece of paper.
The status of -X changes from "H" to "L".
(9) Move the pen block to the far right. When the pen block reaches the home position flag, the status of Y
changes from "L" to "H".
(10) Lower the media set lever to raise the push rollers. The status of C changes from "L" to "H".
(11) Move the pen block to the left and right. When the pen block crosses the push roller, the status of P
changes from "L" to "H".
(12) When testing is complete, turn off the power to the plotter.
CE5000-UM-251-9370
Symptom
8-1
8 SERVICE MODES