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Service Guide ML395/395C
Chapter 4 Failure & Repair Analysis
RAP 10D: Data Receive Failure (Alarm Light Lit)
START
Remove the upper cover.
Press and hold the cover open microswitch while powering ON the printer.
Does the alarm lamp come on?
NO Perform the operations listed below.
1. Correctly connect cable CN13 on the control board.
2. Check the alignment between the front access cover and the COVER OPEN switch.
3. Replace the COVER OPEN microswitch/cable assembly.
YES Is the paper properly installed?
NO Install the paper properly.
YES Does the continuous form end microswitch function correctly?
NO Perform the operations listed below.
1. Correctly connect CN103 on the interface connector board.
2. Replace the sheet feeder assembly L.
YES Does the single sheet end sensor function correctly?
NO Perform the operations listed below.
1. Check that there is no dirt or dust on the sensor surface.
2. Correctly connect CN1 on the sensor board.
3. Replace the sensor cable assembly.
YES Does the bottom feed paper end sensor function correctly?
NO Perform the operations listed below.
1. Check that there is no dirt or dust on the sensor on the sensor board.
2. Correctly connect cable CN4 on the control board.
3. Replace the sensor board.
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