Service manual

Component CN No. Condition Symptom
LCT cover -2
(SW15)
105-A5
Open
The tray does not go down even
if the tray down switch is
pressed. After 30 seconds,
"SC#46" is displayed.
Shorted The tray goes down continuously.
105-B6
Open
•• During the copier runs, the
"Paper end" indicator lights
and the tray goes down even if
paper there is still.
•• After loading paper, the tray
does not go up and "SC#46" is
displayed.
Shorted The tray goes up continuously.
Tray down
(SW16)
105-A8
Open
The tray does not go down and
LED does not light even if the
tray down switch is pressed.
Shorted
4.3 FUSES
Component Condition Symptom
F1 (125V/10A)
(DC Power Supply
Board)
Open
The copier does not turn on when the main
switch is turned on.
F2 (125V/6.3A)
(DC Power Supply
Board)
Open
"C-5" is displayed first then "SC#2A" or
"SC#23" is displayed depending on the 3rd
scanner position when the main switch is
turned on.
F3 (125V/6.3A)
(DC Power Supply
Board)
Open
"Paper jam A" indicator starts blinking when
copies are made.
"SC#61" is displayed when copier starts idling
or during the copy cycle.
F4 (125V/6.3A)
(DC Power Supply
Board)
Open
"SC#21" or "SC#22" is displayed depending
on the 1st scanner position.
F1 (125V/10A)
(Main Motor Control
Board)
Open
"SC#61" is displayed when copier starts idling
or during the copy cycle. "Paper jam A"
indicator starts blinking when copies are made.
F1 (125V/15A)
(Power Code Terminal)
Open
The copier does not turn on when the main
switch is turned on.
Rev. 1/94
FT5733/5433 6-42 FSM