preventive maintenance kits 355
print quality
cleaning the scanner glass 357
initial check 38
Print Quality Pages 218
print quality test pages 198
print quality troubleshooting
adf cover open service check 74
adf duplex service check 150
adf feed errors service check 148
adf streak service check 148
black or blank page copy service check 145
blank pages 41
blurred or fuzzy print 42
ccd service check 144
fax reception service check 152
fax transmission service check 154
flatbed home position service check 146
flatbed motor service check 146
gray background on prints 39
half‑color page 42
horizontal banding 43
horizontal line 43
light print on solids 46
missing image at edge 43
modem/fax card service check 151
narrow vertical line 44
problems 46
random marks 44
residual image 45
solid color pages 45
toner rubs off 38
toner specks appear on prints 44
vertical banding 46
print tests 198
printer default values 205
printer message
[x]‑page jam, open front door to clear duplex
[23y.xx] 63
printer messages
[x]‑page jam, clear manual feeder [251.xx] 70
[x]‑page jam, clear multipurpose feeder [250.xx] 68
[x]‑page jam, clear standard bin [203.xx] 60
[x]‑page jam, open automatic feeder top cover
[28y.xx] 71
[x]‑page jam, open front door [20y.xx] 49
[x]‑page jam, open front door to clear fuser
[20y.xx] 53
[x]‑page jam, open tray [x] [24y.xx] 67
printer setup
configuration id 206
engine setting 1 through 4 206
model name 206
page count, total 206
reset fuser count 207
serial number 206
transfer module barcode 207
printhead lenses
cleaning 358
printhead removal 324
processor specifications 386
Q
quick test 195
R
rear cover removal 307
rear scanner cover removal 333
recovery mode
accessing 224
recycled paper
using 26
redrive unit removal 324
registration 193
removal procedures
tips 246
removals
650‑sheet duo drawer assembly 341
650‑sheet duo drawer tray assembly 340
adf assembly 326
adf input tray 328
adf separator pad 329
adf separator roll 329
aio link 319
aio release lever 320
aio toner cover 318
bin‑full flag 321
controller board 309
developer unit 262
duplex reference edge 285
duplex sensor 302
dust cover 342
EP drive assembly 247
flatbed pivot link 338
flatbed scanner assembly 333
front cover assembly 273
front middle cover 275
fuser assembly 287
fuser drive motor assembly 257
fuser exit sensor 254
high‑voltage power supply (HVPS) 263
imaging unit (IU) 267
left cover assembly 246
7527
Index
413
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