41955801TH Rev.8
123 /
Oki Data CONFIDENTIAL
4
Up/Down movement error of the image drum unit (ID)
•
Turn the printer OFF, then turn it ON after a few seconds.
•
Are all ID drums rotating properly during print operation?
•
No
Is the ID motor resistance within the regulated value (approx. 8.6
Ω
)?
No
Replace the faulty IDU motor.
▼
•
Yes Is 34V output to F3 and F5 on the engine board?
No
Replace the low-voltage power unit.
▼
•
Yes Check the cable connections, then replace the engine board.
▼
•
Yes
Is the IDU sensor terminal functioning properly?
No
Check the gear mesh status and sensor terminal function, the replace the gear or sensor
terminal.
▼
•
Yes
Is the ID sensor terminal functioning properly?
(Check the JODEN connector pin signal on the driver board (K7N/K7V PXB).)
Pin 12
: IDU sensor - yellow
Pin 2
: IDU sensor - magenta
Pin 4
: IDU sensor - cyan
Pin 14
: IDU sensor - black
Are all at 5V level or 0V level?
No
Replace the connection board (N71 PWB).
▼
•
Yes
Check the cable connection between the connection board (N71 PWB) and engine board
(K7N PWB), then replace the engine board.
Summary of Contents for C7500n
Page 14: ...41955801TH Rev 8 14 Oki Data CONFIDENTIAL 2 2 Parts layout Figure 2 1 A A B B A A B...
Page 15: ...41955801TH Rev 8 15 Oki Data CONFIDENTIAL Top Cover Assy Figure 2 2 For 1200dpi For 600dpi...
Page 16: ...41955801TH Rev 8 16 Oki Data CONFIDENTIAL Printer Unit 1 2 Figure 2 3 A A...
Page 17: ...41955801TH Rev 8 17 Oki Data CONFIDENTIAL Printer Unit 2 2 Figure 2 4...
Page 18: ...41955801TH Rev 8 18 Oki Data CONFIDENTIAL Cassette Guide Assy L R Figure 2 5 A B B A C C C C...
Page 19: ...41955801TH Rev 8 19 Oki Data CONFIDENTIAL Duplex Unit A B D C A B C D E E F G G F Figure 2 6...
Page 84: ...41955801TH Rev 8 84 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7...
Page 177: ...41955801TL Rev 8 4 Oki Data CONFIDENTIAL 49 35 50 44 51 50 43 46 47 48 36 Main Assembly 3 3...
Page 191: ...41955801TL Rev 8 10 10 Oki Data CONFIDENTIAL 2nd 3rd Tray 1 2 3 4 8 5 6 7...