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TROUBLESHOOTING & REPAIR
SENSOR CALIBRATION TEST (FOR DISPLAY BOARD) (continued)
FIGURE F.53 - SENSOR LOCATION BEHIND OVERLAY
1. LEADS 300, 301 TO PLUG J15 ON DISPLAY BOARD
2.
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PROCEDURE
1.Turn the machine ON with no overlay in place. The overlay ID number displayed should be 255.
2.When the display reads SELECT A FUNC- TION, place the TEST overlay on the machine.
3.Press key #34 - OVERLAY CALIBRATE. The OVERLAY CALIBRATE light turns on and for a few seconds the display reads:
OVERLAY SENSOR
CALIBRATION
Then the display changes to read:
INSERT REF OVRLY
PRESS ENTER . . .
Insert
4.Press key #133 - ENTER. The machine will begin to calibrate the eight overlay sensors.
5.If one of the sensors could not be calibrat- ed, the display reads:
SENSOR X FAILED
ENTER TO RETRY
Make sure the overlay is lined up properly and press key #133 - ENTER. This will cause the machine to try to calibrate the sensor again. If a particular sensor continues to fail. Clean sensor or replace display board.
6.If the calibration procedure is successful, the display reads:
CALIBRATION
SUCCESSFUL
After a few seconds the display changes to read:
INSERT CAL OVRLY
PRESS ENTER . . .
7.Press key #133 - ENTER. the OVERLAY CALIBRATE LED turns off, the machine exits the OVERLAY CALIBRATE function and the display reads:
SELECT A FUNCTION
8.Turn the power switch SW1 to the OFF position. To use the machine, place the appropriate overlay in position and turn power switch SW1 to the ON position.
NOTE: Turn power switch SW1 to the OFF position and get the overlay that was not recognized by the power wave. Replace the TEST overlay with this overlay and turn the machine ON. The machine should recognize the overlay now. If it does not, the overlay is faulty.
