Oki OKIPAGE 8c Plus Maintenance Manual page 136

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Black stripe or lines in the vertical direction
• Is each LED head assembly connected to the junction board (PD6 PCB) correctly?
No Connect the LED head assembly to the junction board correctly.
• Yes Check the connection of the cables or replace the LED head assembly. Is the problem
recovered?
Yes End
• No Check the connection of the cables or replace the junction board (PD6 PCB). Recovered?
Yes End
• No Is engine board (PX4 PCB) connected to the junction board (PD6 PCB) correctly?
No Connect the engine board to the junction board correctly.
• Yes Check the connection of the cables or replace the engine board (PX4 PCB). Is the problem
recovered?
Yes End
• No Is Each terminal of each image drum unit connected to the contact assembly correctly? (See
Figure 6.2.)
No Make the terminals be in contact with the contact assembly correctly.
• Yes Replace the the image drum unit.
Notes: 1. When replacing the engine board (PX4 PCB), demount the EEPROM chip from the old
engine board and remount it on the new one.
2. After replacing the image drum unit, be sure to reset its counter in the User Maintenance
mode.
3. After replacing the LED head assembly, be sure to adjust its drive time and correct its color
deviation.
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