Pwb, Sensor, Switch, Heater - Sharp MX-LCX3N Service Manual

2. PWB, sensor, switch, heater

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