AR-LC9. ARLC9-Service Manual — Sharp Copying Equipment Service Manual (repair manual). Page 10

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AR-LC9  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
Controls and drives the 
LCC.
8
LLD
LLD
Lower limit 
sensor
The lower limit of the tray is 
detected.
When lifting up, "L" level.
9
LRE
LRE
Lift motor 
encoder
The lift motor rotation is 
detected.
Pulse signal
10 LCD
LCD
Cassette 
detection
The tray insertion is 
detected.
11 LTOD
LTOD
The main unit 
connection 
sensor
Detects connection to the 
main unit.
12 LTD
LTD
Transport 
sensor
Detects paper transport.
When paper feed is 
performed, when the  paper 
feed solenoid is "L," it is "H" 
level.
13 LUD
LUD
Upper limit 
sensor
Detects the paper upper 
limit position.
When "H" level (ON), the 
lift-up motor stops.
14 LPED
LPED
Paper 
presence/
empty sensor
Detects  paper presence/
empty on the paper tray.
When paper is detected, 
"H."
When lifting up, if "L" with 
LRE 800 pulse, the paper 
feed solenoid is ON.
15 LLSW
LLSW
Upper limit 
switch
Protects the paper feed unit 
from breakage due to lifting 
the tray too much.
16 LOSW
LOSW
Upper open/
close switch
Detects open/close of the 
upper door.
7
8
9
10
11
14
12
13
15
16
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