Oki C5100 Maintenance Manual page 85

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Blank page (Fig 5-2 C )
• Are the LED head assys connected to the CU board (ARC PWB / OWL PWB) properly?
NO
• YES
YES Replace the LED head assys after checking cable connection.
• NO
NO
• YES
NO
• YES
YES End.
• NO
NO
• YES
Note: When replacing the engine board (RSN PWB), extract EEPROM data from it and copy the
42049001TH Rev.1
Check the cable connection between not properly connected LED assy(s) and CU board
(ARC PWB / OWL PWB), and connect them correctly.
Are +5V and +3.3V being output to the CU board (ARC PWB / OWL PWB) K, Y, M and C
HEAD connector pins?
+5V: Pins 16, 18, 20, 22 and 24
+3.3V: Pin 14
Are +5V and +3.3V being output to the engine board (RSN PWB) CUIF connector?
+5V: Pins 7, 8 and 9
+3.3V: Pins 10, 11 and 12
Replace the low voltage power unit after checking cable connection.
Is 24V being output to the engine (RSN PWB) HVOLT connector pin 15?
Replace the engine board.
Replace the high voltage power unit or the belt unit after checking cable connection.
Has the problem been corrected?
Are the image drum pins connected to the contact assy properly (see figure 5-2)?
Connect not properly connected image drum pin(s) to the contact assy correctly.
Replace the image drum units.
data onto a new engine board.
Oki Data CONFIDENTIAL
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