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Service Guide DOC-IT3000/4000
Chapter 4 Failure & Repair Analysis
RAP#16 - Print Missing from Output
START.
Set the darkness level in administration menu. Refer to Section 3.3 of this Service Handbook.
Is there sufficient toner in the unit?
NO Add toner.
YES Is the paper of the specified grade?
NO Use paper of the specified grade. Then, go to A.
YES Verify that the LED head is connected properly. Then, go to A.
A
Is the paper folded, bent, or scratched?
YES Replace the paper.
Has the problem been resolved?
YES End of procedure.
NO Go to the next step listed below.
NO Clean the corona wire in the transfer charger.
Has the problem been resolved?
YES End of procedure.
NO Perform the printer unit test. Refer to Section 4.8 of this Service Handbook.
Raise the stacker cover to stop the print cycle just as the bottom of the paper
goes under the hopping roller.
Lift the upper unit, remove the paper and look at the image drum.
Is there a complete toner image on the drum?
Continued on the next page.
YES Listed below are the possible defective assemblies.
Replace in the order listed, checking the operation of the unit between each assembly. 1. High voltage
power supply
2. Engine control board
3. Uneven temperature on the fuser roller can be caused by a dirty roller.
4. Fuser cleaner pad
5. Transfer charger assembly
6. Fuser assembly Has the problem been resolved? YES End of procedure.
NO Contact Technical Support.
NO Clean the LED head.
Has the problem been resolved? YES End of procedure.
NO Contact Technical Support.
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Summary of Contents for DOC-IT3000
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