Read Sharp MX-LCX3N (serv.man8) Service Manual online
MX-LCX3N EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 – 2
2. PWB, sensor, switch, heater
No.
Parts
Code
Signal name
Name
Type
Function/Operation
Active condition
1
LPUD
LPUD
LCC paper front surface
sensor
sensor
Detects paper front surface position
CN-C 8pin
Paper detected: "L"
Paper not detected: "H"
Paper detected: "L"
Paper not detected: "H"
2
LUD
LUD
Upper limit sensor
Detects the paper upper limit position.
CN-E 5pin
Upper limit: "H"
Other than Upper limit: "L"
Upper limit: "H"
Other than Upper limit: "L"
3
LPFD
LPFD
Transport sensor
Detects paper transport.
CN-E 11pin
Paper detected: "L"
Paper not detected: "H"
Paper detected: "L"
Paper not detected: "H"
4
LTOD
LTOD
The main unit connection
sensor
sensor
Detects connection to the main unit.
CN-F 19pin
Connected: "L"
Not connected: "H"
Connected: "L"
Not connected: "H"
5
LDSW
LDSW
Upper open/close switch
Detects open/close of the upper door.
CN-F 4pin 6pin
Open: "L"
Close: "24V"
Open: "L"
Close: "24V"
6
LLSW
LLSW
Upper limit switch
Protects the paper feed unit from breakage
due to lifting the tray too much.
due to lifting the tray too much.
CN-F 7pin
Normal: "24V"
Detection: "L"
Normal: "24V"
Detection: "L"
7
LPED
LPED
Paper presence/empty
sensor
sensor
Detects paper presence/empty on the paper
tray.
tray.
CN-E 2pin
Paper present: "L"
Paper empty: "H"
Paper present: "L"
Paper empty: "H"
8
A3-LCC PWB
—
A3-LCC PWB unit
Controls and drives the LCC.
9
LCSW
LCSW
Cassette detection switch
The tray insertion is detected.
CN-B 7pin
Cassette insertion: "24V"
Cassette puling out: "L"
Cassette insertion: "24V"
Cassette puling out: "L"
10
LRE
LRE
Lift motor encoder
The lift motor rotation is detected.
CN-C 4pin
Pulse
Pulse
11
LWRSW
LWRSW
LCC reverse-winding
detection switch
detection switch
Detects lift motor reverse-winding
CN-B 14pin
Normal: "24V"
Detection: "L"
Normal: "24V"
Detection: "L"
12
LTLD
LTLD
Tray lock sensor
Detects the tray lock
CN-C 7pin
Lock: "H"
Release: "L"
Lock: "H"
Release: "L"
13
LDD
LDD
Lower limit sensor
The lower limit of the tray is detected.
CN-C 3pin
Lower limit: "H"
Other than Lower limit: "L"
Lower limit: "H"
Other than Lower limit: "L"
14
DOWN SW PWB
—
Lowering SW PWB unit
Shifts the tray to the paper supply position.
15
LTLLED
LTLLED
Tray LED
The tray state is displayed with LED.
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
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