Oki OKIPAGE 8c Plus Maintenance Manual page 140

8
Missing characters or synthesization colors
• Is each LED head lens contaminated?
Yes Clean the lens of LED head.
• No Is each LED head assembly connected to the junction board (PD6 PCB) correctly?
No Check the connection of the cables (between each LED head and the junction board) or
connect the LED head cables to the junction board correctly.
• Yes Is +3.3V on the following pins of the HEADPOW connector of the junction board (PD6 PCB)
being supplied?
+3.3V: Pin 1, 2, 3, 4, 5, 6
• Yes Is +3.3V being supplied to each LED head assembly from the junction board (PD6 PCB)?
Pins 1, 2, 3, 4, 5 and 6 of the YPOW connector for the yellow LED head assembly
Pins 1, 2, 3, 4, 5 and 6 of the MPOW connector for the magenta LED head assembly
Pins 1, 2, 3, 4, 5 and 6 of the CPOW connector for the cyan LED head assembly
Pins 1, 2, 3, 4, 5 and 6 of the BPOW connector for the black LED head assembly
No Replace the junction board (PD6 PCB).
• Yes Check the connection of the cables or replace the LED head assembly.
• No Is +3.3V on the following pins of the HEADPOW connector of the engine board (PX4 PCB)
being supplied?
+3.3V: Pin 1, 2, 3, 4, 5, 6
Yes Replace the HEADPOW cable.
• No Is +3.3V being supplied on the following pins of the POWER connector of the engine board
(PX4 PCB)?
+3.3V: Pin 15, 16, 17, 18
Yes Replace the engine board.
• No Check the connection of the cables or replace the low-voltage power supply. Is the problem
recovered?
Yes End
• No Is +32V on the power connector of the engine board (PX4 PCB) being supplied?
+32V: Pin 7, 8, 9, 10
No Check the connection of the cables or replace the low-voltage power supply.
• Yes Is +32V on pin 2 of the HVOLT connector of the engine board (PX4 PCB) being supplied?
No Replace the engine board.
• Yes Check the connection of the cables, replace the high-voltage power supply or belt cassette
assembly. Is the problem recovered?
Yes End
• No Is each terminal of each image drum unit connected to the contact assembly correctly? (See
Figure 6.3.)
A
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