Service manual

4.2 SWITCHES
Component CN No. Condition Symptom
Upper paper size
(SW1)
(SW2)
(SW3)
(SW4)
104-B1
104-B2
104-B3
104-B4
Open
The CPU cannot detect proper
paper size, and misfeeds may
occur when copies are made.
Shorted
Lower paper size
(SW5)
(SW6)
(SW7)
(SW8)
104-B 9
104-B10
104-B11
104-B12
Open
The CPU cannot detect proper
paper size, and misfeeds may
occur when copies are made.
Shorted
Color detection
(SW9)
111-A6
111-B7
Open
The CPU cannot detect proper
color development unit, and
cannot properly control the copy
process system for the
development unit. This may
cause an abnormal image.
Shorted
Exit cover
(SW10)
111-B10
Open
"C-2" is displayed even if the exit
cover is closed.
Shorted
"C-2" is not displayed even if exit
cover is opened.
Platen cover
(SW11)
111-B12
Open
The CPU cannot detect proper
original size correctly.
Shorted
Front door safety
(SW12)
---- Open
"C-1" is displayed even if the
front door is closed.
---- Shorted
"C-1" is not displayed even if the
front door is opened.
Main SW
(SW13)
---- Open The copier does not turn on.
---- Shorted The copier does not turn off.
LCT cover -1
(SW14)
105-B14
Open
When LCT is selected, "C-4" is
displayed even if LCT cover is
closed.
Shorted
When LCT is selected, "C-4" is
not displayed even if LCT cover
is opened.
FSM 6-41 FT5733/5433