Read Sharp AR-LC8 Service Manual online
AR-LC8 INTERNAL CONSTRUCTION 4 - 2
2. PWB, sensor
No.
Parts
MODEL
NOTE
Code
Signal name
Name
Type
Function/Operation
Active condition
7
MAIN PWB
—
LCC main
PWB
PWB
Controls and drives the
LCC.
LCC.
8
LLD
LLD
Lower limit
sensor
sensor
The lower limit of the tray is
detected.
detected.
When lifting up, "L" level.
9
LRE
LRE
Lift motor
encoder
encoder
The lift motor rotation is
detected.
detected.
Pulse signal
10 LCD
LCD
Cassette
detection
detection
The tray insertion is
detected.
detected.
11 LTOD
LTOD
The main unit
connection
sensor
connection
sensor
Detects connection to the
main unit.
main unit.
12 LTD
LTD
Transport
sensor
sensor
Detects paper transport.
When paper feed is
performed, when the paper
feed solenoid is "L," it is "H"
level.
performed, when the paper
feed solenoid is "L," it is "H"
level.
13 LUD
LUD
Upper limit
sensor
sensor
Detects the paper upper
limit position.
limit position.
When "H" level (ON), the
lift-up motor stops.
lift-up motor stops.
14 LPED
LPED
Paper
presence/
empty sensor
presence/
empty sensor
Detects paper presence/
empty on the paper tray.
empty on the paper tray.
When paper is detected,
"H."
"H."
∗
When lifting up, if "L" with
LRE 800 pulse, the paper
feed solenoid is ON.
LRE 800 pulse, the paper
feed solenoid is ON.
15 LLSW
LLSW
Upper limit
switch
switch
Protects the paper feed unit
from breakage due to lifting
the tray too much.
from breakage due to lifting
the tray too much.
16 LOSW
LOSW
Upper open/
close switch
close switch
Detects open/close of the
upper door.
upper door.
7
8
9
10
11
14
12
13
15
16
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