Lever & Pressure Roller Errors; E079 - Lever Overcurrent; E080 - Lever Sensor Err - MUTOH Rockhopper 3 Troubleshooting Manual

2.5 LEVER & PRESSURE ROLLER ERRORS

2.5.1 E079 - Lever OverCurrent

Step 1 : The lever motor is drawing too much power. Replace the lever motor.
Step 2 : Verify for any short circuits in the motor wiring between the motor and the mainboard.
Step 3 : Check the Y motor driver-IC.
The driver chip is located on the mainboard on Uxx for old board revisions. New board revisions
(RoHS) the driver chip is the Uxxx.
The following pins should be measured:
• Between pin 1 and 10
• Between pin 2 and 11
The measurement value should be approx. 2 to 3 Meg Ohms.
If this is not the case, the driver is broken, replace the mainboard

2.5.2 E080 - Lever Sensor Err

The lever up / down sensor of the lever motor did not respond within a certain time or the Up-Down sensor is
failing.
Step 1 : Verify the Up / Down sensors
Diagnostics
•
Verify if both sensors are clean
•
Verify the cable connections on the sensors and the mainboard
Step 2 : Verify if the gear-wheel / sensor flag of the pinch rollers is properly activating both sensors
Step 3 : Verify if the lever-motor is working and properly geared. Therefore you need to remove the A-
heater platen to be able to verify this.
Step 4 : Check the Y motor driver-IC.
The driver chip is located on the mainboard on U109 for old board revisions. New board revisions
(RoHS) the driver chip is the U123.
The following pins should be measured:
•
Between pin 1 and 10
•
Between pin 2 and 11
The measurement value should be approx. 2 to 3 Meg Ohms.
If this is not the case, the driver is broken, replace the mainboard
Test Sensor Lever Up / Down
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Troubleshooting
AP-74700 – Rev. 1.0 – 10/03/2008