Service Mode; Sensor Test Mode & Panel Switch Test Mode - GRAPHTEC FC8000-60 Service Manual

8.5 Service mode

8.5.1 Sensor Test Mode & Panel Switch Test Mode
This mode checks the sensor status and the control panel switch 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.
Pinch 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 A2 or larger size sheet of paper in the plotter.
(2) Enter the adjustment menu (see Section 7.3.4).
(3) Press the MENU key to display the menu shown below.
(5) Press the F1 key to display the menu shown below.
Each short forms are corresponding to the sensors and the control panel switches as shown below.
Short form Sensor or key
UP Up arrow key
YHME Y home sensor
XFRONT Front media sensor XREAR
STOP STOP key
CCUT Cross Cut key FAST
COND Condition key ENTR
F4 4 key
(6) Cover the front media sensor with a piece of paper.
The status of XFRONT changes from "L" to "H".
(7) Cover the rear media sensor with a piece of paper.
The status of XREAR changes from "L" to "H".
(8) Move the pen block to the far right. When the pen block reaches the home position flag, the status of
YHME changes from "L" to "H".
(9) Lower the media set lever to raise the pinch rollers. The status of CAM changes from "L" to "H".
(10) Move the pen block to the left and right. When the pen block crosses the pinch roller, the status of PROL
changes from "L" to "H".
FC8000-UM-251-9370
Short form Sensor or key
DN Down arrow key
PROL Pinch roller sensor CAM
Rear media sensor
MENU Menu key
Fast key
Enter key
F3 3 key
Symptom
Short form Sensor or key
LT Left arrow key
Cam sensor
COPY Copy key
ORIG Origin key
F2 2 key
8-16
8. TROUBLESHOOTING
Short form Sensor or key
RT Right arrow key
F1 1 key