Oki Data CONFIDENTIAL
42049001TH Rev.1 88 /
5 Vertical belt or line (white or uneven-color) (Fig. 5-2 F )
• Are the LED heads dirty?
YES Clean dirty LED head(s).
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• NO Are the image drum pins connected to the contact assy properly (see figure 5-3 D)?
NO Connect not properly connected pin(s) to the contact assy correctly.
▼
• YES Replace the image drum units.
• Are the LED head assys connected to the CU board (ARC PWB / OWL PWB) properly?
NO Connect not properly connected LED head assy(s) to the CU board (ARC PWB / OWL PWB)
correctly.
▼
• YES Replace LED head assys after checking cable connection. Has the problem been
corrected?
YES End.
▼
• NO Replace the high voltage belt unit. Has the problem been corrected?
YES End.
▼
• NO Replace the connection board (Y73 PWB) after checking cable connection. Has the
problem been resolved?
YES End.
▼
• NO Is the I/D terminal connected properly to the contact assembly? (See Fig. 5-3)
NO Is the engine board (RSN PWB) connected to the CU board properly?
▼
• YES Replace the engine board (RSN PWB) after checking cable connection. Has the problem
been corrected?
YES End.
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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