Oki Data CONFIDENTIAL
42049001TH Rev.1 94 /
(B)
• [Is “YELLOW/MAGENTA/CYAN LEFT/RIGHT/HORIZONTAL” displayed?
• YES Replace the belt unit. Has the problem been corrected?
YES End.
▼
• NO Replace the image drum unit. Has the problem been resolved?
YES End.
▼
• NO Are there any problems in the gear assys of the image drums, multipurpose tray, belt unit,
belt motor etc.?
YES Replace damaged gear assy(s).
▼
• NO Replace the driver board. Has the problem been corrected?
YES End.
▼
• NO Are the LED head units connected to the CU board (ARC PWB / OWL PWB) properly?
NO Connect not properly connected LED head unit(s) to the connection board correctly.
▼
• YES Replace the LED head assys after checking cable connection. Has the problem been
resolved?
YES End.
▼
• NO Replace the CU board (ARC PWB / OWL PWB) after checking cable connection. Has the
problem been corrected?
YES End.
▼
• NO Is the engine board (RSN PWB) connected to the CU board (ARC PWB / OWL PWB)
properly?
NO Connect the engine board to the connection board correctly.
▼
• NO Replace the engine board. Has the problem been resolved?
YES End.
▼
• NO Are the pins of the image drum units connected to the contact assy properly (see figure 5-
3)?
NO Connect not properly connected pins to the contact assy correctly.
▼
• YES 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.
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