41956001TH Rev.1
148 /
Oki Data CONFIDENTIAL
1
An image is generally faint or the color is irregular. (Fig 6-2 A )
•
Is the amount of toner low? (Is [Toner Low] indicated?)
Yes
Refill toner.
▼
•
No
Is regulated paper used?
No
Use regulated paper.
▼
•
Yes
Is the LED head lens dirty?
Yes Clean the LED head lens.
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•
No
Are all items of the LED head assembly connected properly to the connection board (Y73
PWB) and engine board (K7N PWB)?
No
Check the cable connection (between each LED head and engine board), then connect the
cables between the LED head and engine board properly.
▼
•
Yes
Is +5V output to the following power connector pins on the connection board (Y73 PWB)?
+5V: Pin 1, 2, 3, 4, 5, 6
•
Yes Is +5V output to the each LED head assemblies on the connection board (Y73 PWB)?
3 pin for YPOW connector : LED head assembly - yellow
3 pin for MPOW connector : LED head assembly - magenta
3 pin for CPOW connector : LED head assembly - cyan
3 pin for KPOW connector : LED head assembly - black
No
Replace the connection board (Y73 PWB).
▼
•
Yes Check the cable connections, then replace the LED head assembly.
▼
•
No
Check the cable connections, then replace the low-voltage power unit. Did the printer
recover?
Yes End.
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•
No
Is 34V output to the power connector on the engine board (K7N PWB)?
+34V: Pin 12, 13, 14
No
Check the cable connections, then replace the low-voltage power unit.
▼
•
Yes
Is 34V output to the HVOLT connector pin 2 on the engine board (K7N PWB)?
No
Replace the engine board.
▼
•
Yes
Check the cable connections, then replace the high-voltage power unit or belt cassette
assembly.
Yes End.
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•
No
Is the I/D unit terminal connected properly to the contact assembly. (See Fig. 6-2)
No
Connect the I/D unit terminal properly to the contact assembly.
▼
•
Yes
Replace the image drum.
Note: 1. Remove EEPROM from the old board and set it on the new board upon replacing the
engine board (K7N PWB).
2. If EEPROM is not replaced, refer to section 4.2.2.
Summary of Contents for C9500dxn
Page 48: ...41956001TH Rev 1 48 Oki Data CONFIDENTIAL 3 2 Parts Layout Figure 3 1...
Page 49: ...41956001TH Rev 1 49 Oki Data CONFIDENTIAL Figure 3 2 Top Cover Assy...
Page 50: ...41956001TH Rev 1 50 Oki Data CONFIDENTIAL Figure 3 3 Printer Unit 1 2...
Page 51: ...41956001TH Rev 1 51 Oki Data CONFIDENTIAL Figure 3 4 Printer Unit 2 2...
Page 52: ...41956001TH Rev 1 52 Oki Data CONFIDENTIAL Figure 3 5 Cassette Guide Assy L R...
Page 53: ...41956001TH Rev 1 53 Oki Data CONFIDENTIAL...
Page 54: ...41956001TH Rev 1 54 Oki Data CONFIDENTIAL A B C D E A B C D E Figure 3 6 Duplex Unit...
Page 112: ...41956001TH Rev 1 112 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7...
Page 178: ...41956001TH Rev 1 178 Oki Data CONFIDENTIAL 37 26 33 38 32 39 38 31 34 35 36 27 Figure 8 1 3 3...