Brother HL-3450CN Service Manual page 327

CHAPTER 8 TROUBLESHOOTING
I-27
Phenomenon
Color is missing in the printed image as shown in
Main Causes
Fusing failure due to using damp paper or using the printer under high humidity conditions.
Countermeasures
(1) Use the paper immediately after open the paper bag.
(2) Change the NVRAM setting. (Refer to
I-28
Phenomenon
A horizontal line appears 244mm from the edge of the printed paper as shown in
sample (28) of Page
Main Causes
Vibration is caused when an OPC belt and the transfer drum contact.
Countermeasures
Change the resolution to 600 dpi.
I-29
Phenomenon
Vertical lines appear when printing the OHP sheet as shown in
46.
Main Causes
Paper dust around the paper exit roller adhering to the OHP sheet.
Countermeasures
(1) Use the recommended OHP sheet.
(2) Clean the paper exit roller.
Color Missing
Horizontal Line 244mm from the Edge of Paper
8-46.
Vertical Lines on OHP
print sample (27) of Page
'45-2 THV TUNE UP' in Section 3.3 of Chapter
print sample (29) of Page 8-
8-64
8-46.
5.)
print