Lexmark MX931 - Page 416

troubleshooting, print quality
blank pages 325
crooked print 335
dark print 326
fine lines are not printed
correctly 327
folded or wrinkled paper 328
gray background on prints 329
horizontal light bands 339
light print 331
mottled print and dots 333
paper curl 334
repeating defects 345
skewed print 335
solid black pages 336
text or images cut o 337
toner easily rubs o 338
vertical dark bands 342
vertical dark lines or
streaks 343
vertical dark streaks with print
missing 344
vertical light bands 340
vertical white lines 341
white pages 325
troubleshooting, printer options
cannot detect internal
option 375
troubleshooting, scan
cannot scan to a computer 386
cannot scan to a network
folder 387
jagged image when scanning
from the ADF 390
jagged text when scanning from
the ADF 390
partial copies of documents or
photos 388
poor copy quality 389
scan job was not
successful 390
scanner does not close 391
scanner does not respond 392
vertical dark streaks on output
when scanning from the
ADF 389
troubleshooting, supplies
missing or unresponsive toner
cartridge 376
two‑sided copying 164
U
unable to read flash drive
troubleshooting, print 352
Universal paper size
setting 55
unlinking trays 73
updating firmware 74
USB cable 30
USB port 30
enabling 352
using Customer Support 34
using Display Customization 34
using genuine Lexmark parts and
supplies 263
using the ADF
copying 163
using the control panel 13
using the home screen 31
using the scanner glass
copying 163
V
verify print jobs 159
vertical dark bands 342
vertical dark lines on prints 343
vertical dark streaks 344
vertical dark streaks on output
when scanning from the
ADF 389
vertical light bands 340
vertical streaks on prints 343
vertical white lines 341
viewing reports 263
Voice Guidance
activating 37
deactivating 37
speech rate 39
Voice Guidance speech rate
adjusting 39
volatile memory 154
erasing 153
W
white lines 341
white pages 325
wireless network
connecting the printer to 148
Wi‑Fi Protected Setup 149
wireless networking 148
wireless print server
installing 147
Wi‑Fi Direct
configuring 150
enabling 150
printing from a mobile
device 157
Wi‑Fi network
deactivating 151
Wi‑Fi Protected Setup
wireless network 149
working shelf
installing 125
wrinkled paper 328
Index 416