theory, mailbox paper path sensors 897
theory, output expander paper path 891
theory, SHPF paper path 901
theory, SHPF paper path sensors 902
theory, Staple finisher paper path 914
theory, Staple finisher paper path sensors 915
toner rubs o 75
toner specks appear on prints 76
tools, required 39
transfer 861
troubleshooting
initial check 43
troubleshooting, print quality
clipped pages or images 72
compressed images appear on prints 73
fine lines are not printed correctly 71
folded or wrinkled paper 56
gray background on prints 45
horizontal light bands 64
incorrect margins on prints 74
paper curl 54
print is too dark 50
print is too light 52
printer is printing blank pages 47
printer is printing solid black pages 57
repeating defects appear on prints 59
skewed print 60
streaked vertical lines appear on prints 62
toner rubs o 75
toner specks appear on prints 76
vertical dark bands 66
vertical dark streaks with print missing 67
vertical light bands 65
white streaks and voided areas 68
troubleshooting, service checks
9yy service error messages 354
U
updating the printer firmware
using a
flash
drive 398
using a network computer 398
using a USB cable connection 398
using the control panel
Lexmark M5255 378
Lexmark M5265 378
Lexmark M5270 378
Lexmark MS725 377
Lexmark MS821 377
Lexmark MS822 378
Lexmark MS823 377
Lexmark MS824 378
Lexmark MS825 377
Lexmark MS826 378
V
vertical dark bands 66
vertical dark streaks with print missing 67
W
white streaks and voided areas 68
4064
Index
934
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