Sharp MX-LCX3N, Service Manual

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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 Detects paper front surface position CN-C 8pin
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"
3 LPFD LPFD Transport sensor Detects paper transport. CN-E 11pin
Paper detected: "L"
Paper not detected: "H"
4 LTOD LTOD The main unit connection
sensor Detects connection to the main unit. CN-F 19pin
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"
6 LLSW LLSW Upper limit switch Protects the paper feed unit from breakage
due to lifting the tray too much. CN-F 7pin
Normal: "24V"
Detection: "L"
7 LPED LPED Paper presence/empty
sensor Detects paper presence/empty on the paper
tray. CN-E 2pin
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"
10 LRE LRE Lift motor encoder The lift motor rotation is detected. CN-C 4pin
Pulse
11 LWRSW LWRSW LCC reverse-winding
detection switch Detects lift motor reverse-winding CN-B 14pin
Normal: "24V"
Detection: "L"
12 LTLD LTLD Tray lock sensor Detects the tray lock CN-C 7pin
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"
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.
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