Oki C9850

Oki Data CONFIDENTIAL
43627911TH Rev. 3
215 /
(B)
• [Yellow, Magenta, Cyan Left/Right/Horizontal] display
• YES Replace the belt unit. Has operation been restored?
YES END
• NO Replace the ID unit. Has operation been restored?
YES END
• NO Is the gear abnormal? (I/D, Multipurpose Tray, Belt Unit, Belt Motor, etc.
gear Assy)
YES Replace the damaged gear Assy.
• NO LED head Unit PCB (S2H PWB) connection properly connected?
NO LED head Unit PCB connection Connect properly.
• YES Check the cable connection, then replace the LED head Assy. Has op-
eration been restored?
YES END
• NO Check the cable connection, Replace the PCB (S2H PWB) connection.
Has operation been restored?
YES END
• NO Is the Engine PCB (S2V PWB) properly connected to the PCB (S2H PWB)?
NO Properly connect the engine PCB to the PCB connection.
• NO Replace the engine PCB. Has operation been restored?
YES END
• NO Is the I/D unit terminal properly connected to the contact Assy?
(Refer to Figure 7-3)
NO Properly connect the I/D unit terminal to the contact Assy.
• YES Replace Image Drum Unit.
Note! 1. When replacing the Engine PCB (S2V PWB), remove the EEPROM from the old
PCB, then mount that EEPROM on the new PCB.
2. If the EEPROM is not going to be replaced, refer to Section 5.2.2.