I-4 Service Manual
4023-001
N
network interface card (NIC) 5–11
new imaging cartridge detection 1–39
no power service check (923) 2–34
O
operator menu disabled 3–1
options 1–6
output bin feed test 3–13
ozone fan motor (M8) and ozone filter
removal 4–47
P
paper cassettes 5–12
cross-sectional view 5–13
drive system 5–14
electrical components 5–14
fixed paper size cassettes (tray 1
only) 5–12
universal cassette (tray 2,3 and 500-
sheet option) 5–12
paper deck 1–45
cross-sectional view 1–45
, 5–19
drive system 5–20
edge guides and trailing edge
stop 1–54
electrical components 5–21
LCC-in-position detection 1–56
lifting operations 1–57
paper dehumidifying heaters 1–60
paper empty detection 1–59
paper near empty detection 1–59
paper releasing mechanism 1–53
paper separating mechanism 1–53
paper size setting 1–55
paper take-up mechanism 1–47
paper take-up retry control 1–52
paper take-up roll retracting
mechanism 1–54
parts identification 5–18
vertical transport drive
mechanism 1–45
paper deck 2500-sheet tray 4 (LCC)
removal procedures 4–70
exterior parts 4–70
feed roll and separator roll 4–80
feed roll, separator roll and torque
limiter assembly 4–79
paper take-up roll cleaning 4–80
paper take-up rolls 4–73
paper take-up unit 4–71
roll with a torque limiter
cleaning 4–81
vertical transport roller/rolls 4–81
paper exit full sensor (PC12)
removal 4–31
paper exit section 1–38
paper exit sensor (PC3) and actuator
removal 4–27
paper feed section 1–11
paper feed service checks 2–44
duplex unit option 2–46
finisher 2–50
fuser/exit 2–46
hole punch 2–52
horizontal transport 2–48
LCC (2500-sheet tray 4) 2–51
mailbox 2–48
pickup tray 1 (250-sheet) 2–44
pickup tray 2&3 (500-sheet) 2–44
synchronizing roll/registration 2–45
parallel wrap test 3–7
power supply unit (PU1) removal 4–44
power unit (PU1) 5–10
power unit cooling fan motor (M4)
removal 4–46
pre-transfer guide plate register plate
(PWB-R2) removal 4–24
print quality service checks 2–36
black page 2–36
blank print 2–42
foggy background 2–39
low image density 2–38
offset image 2–41
toner smudges on backside 2–37
white spots 2–37
white/black lines 2–40
printer configuration 1–8
printer electrical components 5–4
printer main engine board (PWB-A)
removal 4–38
printer main engine board PWB-A 5–8
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