Index I-3
4023-001
500-sheet cassette (tray 2 and 3)
vertical transport roller/rolls
cleaning 4–18
fuser (abnormal temperature) service
check (923) 2–34
fuser (temperature low) service check
(920/922) 2–35
fuser frame resistor board (PWB-R1)
removal 4–34
fusing roller thermistor (TH1)
removal 4–29
fusing roller thermostat (TS1)
removal 4–30
fusing section 1–36
fusing unit removal 4–27
G
gear/roller assignment motors 5–3
general description of each
section 1–9
H
handling the printed circuit boards with
MOS ICs 4–1
heater lamp (H1) removal 4–29
heater lamp removal 4–28
high voltage board (HV1) 5–10
high voltage unit (HV1) removal 4–37
horizontal transport unit
cross-sectional view 5–30
electrical components 5–31
mechnical components 5–31
I
image cartridge/PC (I/C) cooling fan
motor (M9) removal 4–36
image cartridge/PC (I/C) drive motor
(M1) removal 4–53
image cartridge/PC (I/C) handling
precautions 4–2
image cartridge/PC (I/C) thermistor
(TH2) removal 4–22
image space table 2–43
image transfer roller removal 4–21
image transfer section 1–34
image transfer unit removal 4–22
imaging cartridge 1–28
input source print tests 3–4
input tray feed test 3–12
L
LCC sensor tests 3–16
LCD hardware test 3–5
M
mailbox
cross-sectional view 5–32
electrical components 5–33
external view (each section) 5–30
external view (front) 5–29
external view (rear) 5–29
main board PWB-A 5–34
mechanical components 5–34
mailbox removal procedures 4–91
horizontal transport unit cover 4–92
storage unit covers 4–91
mailbox sensor tests 3–18
mailbox service checks 2–58
bin 1-10 2–59
power 2–58
transport drive 2–59
mailbox/transport option 1–61
horizontal transport unit cross-
sectional view 1–61
horizontal transport unit paper
transport mechanism 1–64
paper empty detection 1–66
paper entrance switching
mechanism 1–64
paper full detection 1–66
paper output modes 1–67
paper path 1–62
paper transport mechanism 1–63
parts identification 1–61
main hopper motor (M6) and sub
hopper motor (M7) removal 4–51
maintenance approach 1–1
maintenance schedule 6–1
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