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DIAGRAMS
Power not supplied
Warm-up not completed
Exposure lamp does not light.
Upper/lower fixing lamp does not
light.
Upper/lower stage tray continues
to rise.
LCT-1000 or CLT-1500 tray
continues to rise.
Finisher is not recognized.
ADF is not recognized.
Upper/lower paper feed tray is not
recognized.
LCT-1000 or LCT-1500 tray is not
recognized.
Large capacity tray is not recog-
nized.
Image is faint.
Blank paper
Slightly soiled blank paper
Very faint image
Entirely black
LED does not light.
LCD backlight does not light.
Close top of right side panel.
Close bottom of right side panel.
Close left side panel.
Set ADU.
Insert developing unit connectors.
Insert key counter.
Close front door.
Supply toner (despite the fact that
there is sufficient toner).
[3] Others
Classification Phenomenon
CN4 (control board), CN8 (DC power supply at paper exit face), CN60
(control board), CN390 (bottom right of rear face), CN397 (DC power
supply at bottom of rear face), CN398 (DC power supply at bottom of
paper exit side)
CN223, CN224, CN226 (optics drive board), CN400 (DC power supply at
bottom of paper exit face), CN6 (control board), CN82 (center of front
external)
CN81 (bottom right of rear face), Main relay faston CN380 (CVR at
bottom right of rear face), CN385 (CVR at bottom right of rear face),
CN384 (center of front external, Temperature fuse blown (optics unit)
CN81 (bottom right of rear face), Main relay faston CN380 (CVR at
bottom right of rear face), Fixing interlock faston (center of front external),
CN382 (DC power supply at bottom of paper exit face)
CN25 (paper feed unit), CN79 (paper feed unit), CN58 (paper feed unit),
CN59 (paper feed unit)
CN709 (bottom right drawer at rear face), CN711 (horizontal conveyance
section), CN724 (vertical conveyance section)
CN114 (control board), CN28 (DC power supply at bottom of paper exit
side), CN101 (external at rear face)
CN106 (control board), CN28 (DC power supply at bottom of paper exit side)
CN56 (center of rear face), CN60 (control board)
CN120 (control board), CN733 (bottom left of rear face), CN734 (bottom
right of rear face)
CN140 (control board), CN127 (bottom left of rear face)
CN217 (top left of rear face)
CN62 (control board)
CN84 (high voltage power supply on rear face/1)
CN85 (Rear face of main body)
CN380 (CVR at rear face), CN385 (CVR at rear face), CN400 (DC power
supply on paper exit side),
CN410/411 (A/D board), CN420 (IP Board)
CN223 (top of paper feed side), CN215, CN214, CN210, CN217, CN220
(in operation panel)
CN77 (operation panel), CN71 (operation panel), CN215 (operation
panel), CN223 (top of paper feed side)
CN7 (control board), CN52 (paper feed unit)
CN83 (control panel), CN722 (at bottom of paper feed side)
CN57 (control board), CN530 (top right of rear face), CN561 (inside ADU
guide unit)
CN57 (control board)
CN50 (drum unit drawer), CN51 (in drum unit), CN5 (control board),
CN63 (center of rear face)
CN39 (control board)
CN831 (interlock switch at center of front external), CN395 (DC power
supply at bottom of paper exit face), CN396 (DC power supply at bottom
of paper exit face)
CN17 (in toner hopper), CN12 (at side of paper feed unit), CN14 (in toner
hopper)
Number of unplugged connector
Power supply
abnormality
Lamp abnor-
mality
Paper feed tray
abnormality
Recognition
abnormality
Image abnor-
mality
Operation panel
Alarm indicator
DIAGRAMS-1
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