Download C5300/C5100 Color LED Page Printer

Oki Data CONFIDENTIAL
8
Missing image
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Are the LED heads dirty?
YES Clean dirty LED head(s).
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•
NO
NO
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•
YES
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Are the LED head assys connected to the CU board (ARC PWB / OWL PWB / SPA PWB)
properly?
Check the connection cables between not properly connected LED head(s) and the CU
board, and connect them correctly.
Are +5V and +3.3V being output to the following HEADPOW connector pins of the CU board
(ARC PWB)?
+5V: Pins 16, 18, 20, 22 and 24
+3.3V: Pin 14
YES Is +5V being output from the CU board (ARC PWB / OWL PWB / SPA PWB) to the LED
heads?
NO
Replace the CU board (ARC PWB / OWL PWB / SPA PWB).
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• YES Replace the LED head assys after checking cable connection. Has the problem been
resolved?
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•
NO
Replace the driver board (RSM PWB) after checking cable connection. Has the problem
been corrected?
YES End.
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•
NO
NO
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•
YES
NO
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•
YES
Is 24V being output to the POWER connector on the engine board (RSN PWB)?
+24V: Pins 2, 4, and 6
Replace the low voltage power unit after checking cable connection.
Is 24V being output to the HVOLT connector pin 15 of the engine board (RSN PWB)?
Replace the engine board.
Replace the high voltage power unit or the belt unit after checking cable connection.
YES End.
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•
NO
NO
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•
YES
Are the pins of the image drum units are connected to the contact assy properly (see figure
5-3)?
Connect not properly connected pins to the contact assy correctly.
Replace the image drum units.
Note: When replacing the engine board (RSN PWB), extract EEPROM data from it and copy the
data onto a new engine board.
42049001TH Rev.3
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