Oki Data CONFIDENTIAL
42049001TH Rev.1 87 /
4 Vertical belt or line (black or color) (Fig. 5-2 D )
• Connect not properly connected LED head assy(s) to the CU board correctly.
NO Connect the LED head assembly to the connection board properly.
▼
• YES Is the pin connection of the image drum unit(s) to the contact assy proper (see figure 5-3)?
NO Connect not properly connected pin(s) to the contact assy correctly.
▼
• YES Replace the image drum unit(s).
• Replace the LED head assys after checking cable connection. Has the problem been corrected?
YES End.
▼
• NO Replace the CU board (ARC PWB / OWL PWB) after checking cable connection. Has the
problem been resolved?
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.
▼
• 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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