Oki C5100 - Image Drum Replacement Procedure; Image Drum Replacement Messages; Image Drum Order Numbers

Oki Data CONFIDENTIAL
42049001TH Rev.1 95 /
0 Color different from original one
• Are the LED head lenses dirty?
YES Clean dirty LED head lens(es).
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• NO Are the LED head assys connected to the connection board (ARC PWB / OWL PWB)
properly?
NO Check the cable connection between not properly connected LED assy(s) and the
connection board, and connect them correctly.
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• YES Are +5V and +3.3V being output to the CU board (ARC PWB / OWL PWB) HEAD connector
pins?
+5V: Pins 16, 18, 20, 22 and 24
+33.V: Pin 14
• YES Is +5V being output to the CU board (ARC PWB / OWL PWB)?
NO Replace the CU board (ARC PWB / OWL PWB).
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• YES Replace the LED head assys after checking cable connection. Has the problem been
corrected?
YES End.
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• NO Replace the driver board (RSM PWB) after checking cable connection. Has the problem
been resolved?
YES End.
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• NO Is 5V being output to the engine board (RSN PWB) POWER connector?
+5V: Pins 7, 8 and 9
NO Replace the low voltage power unit after checking cable connection.
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• YES Is 24V being output to the engine board (RSN PWB) HVOLT connector pin 15?
NO Replace the engine board.
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• YES Replace the high voltage power unit or the belt cassette assy after checking cable
connection. Has the problem been corrected?
YES End.
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• NO Are the pins of the image drum units connected to the contact assy properly (see figure 5-3)?
NO Connect not properly connected pin(s) to the contact assy correctly.
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• YES Replace the imaged drum units.
Note: When replacing the engine board (RSN PWB), extract EEPROM data from it and copy the
data onto a new engine board.
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