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scanner does not respond 292
vertical dark streaks on output
when scanning from the
ADF 289
two‑sided copying 53
U
unable to read flash drive
troubleshooting, print 270
Unformatted
flash
detected 274
Universal paper size
setting 29
unlinking trays 38
updating
firmware
318
USB cable 16
USB port 16
enabling 270
using Customer Support 23
using Display Customization 21
using genuine Lexmark parts and
supplies 186
using QR Code Generator 23
using the ADF
copying 52
using the automatic document
feeder (ADF) 52, 55, 64, 76
using the control panel 17
using the home screen 19
using the scanner
glass 52, 55, 64, 76
copying 52
V
verify print jobs 49
vertical dark lines 260
vertical dark lines on prints 261
vertical dark streaks on output
when scanning from the
ADF 289
vertical streaks on prints 261
viewing a fax log 74
viewing reports 166
virtual keyboard
using 28
Voice Guidance
activating 27
speech rate 27
Voice Guidance speech rate
adjusting 27
volatile memory 164
erasing 163
W
white lines 257
white pages 239
wireless network
connecting the printer to 167
Wi‑Fi Protected Setup 168
wireless networking 167
Wi‑Fi Direct
configuring 169
enabling 169
printing from a mobile
device 47
Wi‑Fi network
deactivating 170
Wi‑Fi Protected Setup
wireless network 168
wrinkled paper 243
Index 342