supply reset 
fuser reset 282
 
ITM reset  282 
supply usage counters 
resetting  164
 
supported paper sizes 33 
supported paper types 34
 
network service check 258 
usb service check 262
 
U
 
understanding the status of the power button and 
indicator light 274
 
updating the printer firmware 
using a flash drive 295
 
using a network computer 295 
user attendance messages
 
31
 
user attendance error messages  164
 
32
 
user attendance error messages 165
 
33
 
user attendance error messages 166
 
42
 
user attendance error messages 168
 
43
 
user attendance error messages 169
 
80 user attendance error messages 169
 
supported paper weights 
symptoms
 
printer 252
 
T
 
tips
 
card stock 32
 
labels, paper  32 
on using envelopes
 
tips on using envelopes 31 
tools, required 35
 
trays
 
installing  495 
troubleshooting 
initial check 37
 
troubleshooting, print quality 
background or gray background 
blank or white pages 41
 
blurred print 44
 
dark print 56
 
gapping or half color page 43 
ghost images 49
 
82 user attendance error messages 
83 user attendance error messages 
84 user attendance error messages 
85 user attendance error messages
 
88 user attendance error messages
 
non
‑
supply user attendance error messages
 
using the control panel 273
 
horizontal colored lines or banding 45 
image void process direction 55 
image void scan direction 54
 
light print 65
 
misaligned color 44 
mottled print and dots 47 
random marks  64
 
solid color or black image 51 
text or images cut off 46 
toner easily rubs off 38 
uneven print density 61
 
vertical colored lines or banding 53 
vertical white lines 48
 
troubleshooting, service checks
 
900 service error messages 235
 
913.xx error code check 241
91y  service  error  messages  240
938 service  error messages  242
95y  service  error  messages  242
96y  service  error  messages  246
97y service error messages 247
980–984 service error messages 249 
99y service error messages 251