DOWNLOAD Sharp AR-LC4 (serv.man4) Service Manual ↓ Size: 52.68 KB | Pages: 10 in PDF or view online for FREE

Model
AR-LC4 (serv.man4)
Pages
10
Size
52.68 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / General operation
File
ar-lc4-sm4.pdf
Date

Sharp AR-LC4 (serv.man4) Service Manual ▷ View online

AR-LC4  GENERAL OPERATION 3 - 1
3.  GENERAL OPERATION
3. 1  Description of Operation
[A] From power ON to standby
(1) When the copier is turned ON, power is also supplied to the feed unit to start the initialization sequence.
The initialization sequence starts with tray motor (M2). The tray motor rotates forward to lift the tray.
The tray motor (M2) stops rotating and lifting the tray when the tray has been lifted and the tray-up
sensor (S2) has been turned ON (H: Sensor light path blocked by the actuator sensor). Papers are
assessed to be present when the empty sensor (S1) is turned ON (L:Passing the sensor light path)
while they are assessed to be absent when the empty sensor (S1) is turned OFF (H: Sensor light path
blocked).
(2) When the LCF is not being installed to the copier (LCF set sensor (S7): OFF) or when the drawer is
being pulled out (Tray sensor (S5): OFF), the tray lifting operation is not carried out. In this case, the
tray starts to be lifted and the same operation which is until  the detection of the paper presence or
absense is carried out when it is installed to the copier and the drawer is inserted.
(3) When the feed sensor (S3) is turned ON (L: Passing the sensor light path), that is, when the paper is
remaining at the transport path, the LCF detects it as a paper jam and cannot operate.
[B] Standby state
(1) When a paper is detected to be present by the above-described operation, the LCF gets into a standby
state.
(2) When the tray unit is pulled out, the tray is automatically lowered because of its structure, and when it
is inserted once again, it is lifted.
[C] Feeding/Transporting operation from the start to the finish of the printing
(1) The [START] key is pressed when the copier decides that the feeding from the the LCF. Then, the
transport motor (M1) starts to drive after the feed motor of the copier has been turned ON.
(2) The feed clutch (CL2) is turned ON and pickup and feed rollers start to drive to feed a paper from the
tray.
(3) After the feeding starts, the transport clutch (CL1) is turned ON and the transport roller starts to drive
to transport the paper.
(4) When the leading edge of the paper has turned ON the feed sensor (S3), the feed clutch (CL2) is turned
OFF and stops the feeding operation. The paper transported by the transport roller is sent to the copier
side, where it is transported by the feed unit.
(5) When a specified time has passed after the trailing edge of the paper turned OFF the feed sensor (S3),
next paper can be fed.
(6) When carrying out a continuous printing, the above steps from (2) to (5) are repeated as many papers
as printed.
(7) When the printing has been finished, the feed motor of the copier stops rotating and the transport motor
(M1) is turned OFF to finish the feeding/transporting operation.
AR-LC4  GENERAL OPERATION 3 - 2
3. 2  Error Detection
[A] Jam detection
In the following cases, the feed jam takes place.
(1) When the feed sensor (S3) is not turned ON in a specified time after the feeding has started.
(2) When each transport sensor of the copier does not operate (ON/OFF) in a specified time after the
feeding has started at the copier side.
[B] Call for service
(1) When the tray-up sensor (S2) is not turned ON in a specified time after the tray has started to be lifted.
[D] Tray operation during printing
(1) When 10~20 sheet of paper have been fed from the tray, the pickup roller is lowered down to a specified
height. The tray-up sensor (S2) detects this and the tray motor (M2) rotates forward to lift the tray.
AR-LC4  GENERAL OPERATION 3 - 3
3. 3  Flow Chart
(E19)
(E25)
(E25)
A
YES
NO
YES
NO
YES
NO
B
Copier intermediate transport clutch ON
Is the copier intermediate
 transport sensor ON?
Press the [START] key
Transport system controlling
Copier feed motor ON
LCF transport motor ON
LCF feed clutch ON
LCF transport clutch ON
Is the LCF feed sensor ON?
LCF feed sensor ON
LCF feed sensor OFF
LCF transport clutch OFF
Is the copier registration
         sensor ON?
Paper jam
Paper jam
Paper jam
AR-LC4  GENERAL OPERATION 3 - 4
(E01)
(E02)
A
YES
NO
YES
NO
YES
NO
B
Copier intermediate transport clutch ON
Copier registration motor ON
Copier registration motor OFF
Is there no remaining copy?
Is the copier fuser unit
    exit sensor ON?
LCF transport motor OFF
Copier feed motor OFF
Standby
Paper jam
Paper jam
Is the copier fuser unit
    exit sensor OFF?
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  • DOWNLOAD Sharp AR-LC4 (serv.man4) Service Manual ↓ Size: 52.68 KB | Pages: 10 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp AR-LC4 (serv.man4) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp AR-LC4 (serv.man4) Copying Equipment. Information contained in Sharp AR-LC4 (serv.man4) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.