Sharp AR-LC1 User manual

SERVICE MANUAL
CODE: 00ZARLC1//A1E
DIGITAL COPIER OPTION
LARGE-CAPACITY
PAPER FEED TRAY
MODEL AR-LC1
SHARP CORPORATION This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
[ 1 ] OUTLINE OF THE PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 2 ] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 3 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . 3-1
[ 4 ] EXTERNAL VIEW AND INTERNAL CONSTRUCTION . . . . . . 4-1
[ 5 ] OPERATING PRINCIPLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[ 6 ] DISASSEMBLY AND REINSTALLATION . . . . . . . . . . . . . . . . . 6-1
[ 7 ] ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[ 8 ] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[ 9 ] TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
[10] WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
[11] EXPLANATION OF THE CIRCUITS . . . . . . . . . . . . . . . . . . . . 11-1
PARTS GUIDE
CONTENTS

[1] OUTLINE OF THE PRODUCT
This paper feed unit stores about 3300 sheets of A4- or B5-size
paper to save the trouble of adding paper when a large amount of
copies is to be taken.
Note: If this large-capacity paper feed unit is to be installed, it is
required to install an optional single-stage paper feed desk
(AR-DE1) or special desk (AR-DD1).
AR-DE2 AR-LC1
[2] SPECIFICATIONS
(1) Paper feed capacity
Paper feed capacity 3300 sheets (64 g/m2or equivalent)
(2) Amount detection
Paper amount detection Provided (5-stage sensors including
empty detection)
Detector 0% (empty), ∼25%, ∼50%, ∼75%,
∼100%
Paper size detection None
(3) Paper size
Paper size A4/B5
Paper weight 56 ∼105 g/m2(14 ∼28 lbs) (Same as
the copier’s paper feed section)
(4) Size switching
Switching to be performed by service personnel
(5) Size detection
Size detection Setting by simulation
(6) Dehumidifying heater
Yes/No Yes
ON/OFF switch ON/OFF by dehumidification heater
switch on the copier
(7) Factory setting
Factory setting paper
size A4
Plate display A4
(8) Power supply
Power supply supplied by the copier
(DC 5 V, DC 24 V)
(9) Power consumption
Max. power consumption about 17.6 W
At stand-by about 1.2 W
(10) External view
External dimensions 325 (wide) ×536 (deep) ×572 (high)
mm
Weight about 32 kg
Case color Frosty gray
1 – 1

[3] UPACKING AND INSTALLATION
1. Unpacking
1 Upper cushion 2 Installation manual
3 LCC 4 Lower cushion
5 Packing case
2
1
1
3
5
4
4
2. Installation procedure
Parts included
Remove the power cord from the copier and then
perform the following procedure.
1. Mount the upper mounting plates and the mounting
plate.
Make 6 holes for mounting (indicated with ) on the copier and
lower part of the stand using a Phillips screwdriver, etc. and remove
burs using a flat-blade screwdriver, etc.Mount the upper mounting
plates using screws A (two for each plate).
Then remove 2 screws from the LCC cover on the copier and remove
the LCC cover.
Securing plate
(1 pc.)
Upper mounting plates
(2 pcs.)
Mounting plate
(1 pc.)
Connecting plate
(1 pc.)
Screws A (6 pcs.) Screw B (1 pc.) Screws C (2 pcs.)
Hole for mounting
Hole for mounting
Screws A
Screws A
Screws A
Screw
Screw
Upper
mounting plate
Upper
mounting plate
LCC cover
Mounting plate
3 – 1

2. Mount the connecting plate to the large capacity tray.
Note: Before mounting the connecting plate to the large capacity
tray, be sure to remove the 2 step screws for securing the
bottom plate.
Fit the connecting plate to the lower part of the large capacity tray
and mount the plate to the position indicated with A using screw B.
3. Fit the connecting plate of the large capacity tray to
the mounting plate of the stand.
Insert the connecting plate into the mounting plate of the stand while
lifting the large capacity tray a little.
After insertion, move the large capacity tray away from the copier to
check that the tray is locked.While the tray is locked, mount the
securing plate using 2 screws C.
4. Check and adjust the height of the large capacity tray.
Move the large capacity tray toward the copier and adjust the tray
and check it so that the rib of the large capacity tray is flush with the
axis of the mounting plate which has been mounted to the copier as
shown in the figure.
•If the axis is flush with the rib:
Push the large capacity tray toward the copier.
•If the axis is not flush with the rib:
Loosen the 2 screws of the installation adjuster mounting plate lo-
cated at the lower part of the large capacity tray and adjust as fol-
lows:
★If the rib is to the right of the axis
Turn the knob clockwise to adjust.
After adjustment, tighten the 2 screws of the installation adjuster
mounting plate.
★If the rib is to the left of the axis
Turn the knob counterclockwise to adjust.
After adjustment, tighten the 2 screws of the installation adjuster
mounting plate.
‚`
‚a
‚`
‚a
Screw B
Step screws
Connecting plate
1 2
Mounting plate
Connecting plate
Securing plate
Screws C
Top view
Axis Rib
Top view
Axis Rib
Knob
Screw
Top view
Axis Rib
Knob
Screw
3 – 2

5. Connect the connector of the large capacity tray.
Remove the connector cover securing screw for connection of the
large capacity tray relay harness connector and remove the connec-
tor cover.Then connect the large capacity tray relay harness connec-
tor to the connector of the copier and tighten the screw on the con-
nector to secure the connector.
6. Remove the feed table securing screw and securing
materials.
Pull out gently the paper tray of the large capacity tray until it
stops.Remove the feed table securing screw and 5 securing materials
which secure the feed table of the large capacity tray.
Push back gently the paper tray to its original position.
To use the large capacity tray without changing the paper size from
the factory default setting:
★Proceed to step 12 of this installation manual.
At this time, insert the power plug of the copier to an outlet and turn
the power switch to the "ON" position.
★Factory default setting: A4 size
The paper size can be switched only to the B5 size.
To use the large capacity tray after changing the paper size from the
factory default setting:
7. Remove the stopper from the paper tray.
Pull out gently the paper tray until it stops and remove the stopper
securing screw located on the lower part of the right side to remove
the stopper.
Then pull out again the paper tray until it stops.
8. Switch the rear end shaft.
Remove each rear end shaft securing screw (blue) which secures the
rear end shaft to the right side in the paper tray and remove the 2
rear end shafts.
Then fit the lower part of each removed rear end shaft to the mount-
ing hole of the feed table of the paper tray and secure the upper part
to the position with B5 indication using a securing screw (blue).
Securing screw
Connector cover
Screw
Connector
Securing materials
Securing materials
Feed table securing screw
Feed table
Stopper
Securing screw
Rear end shafts
Securing screw (blue)
Securing screw (blue)
Securing screw (blue)
Rear end shafts
Feed table Mounting holes
3 – 3

9. Switch the size of side plates F and R
Remove the screws which secure the upper and lower parts of side
plates F and R and remove side plates F and R.
Then fit the lower parts of side plates F and R to the position with B5
indication, position also the upper parts to the B5 size position, and
secure the plates using two screws (blue) for each plate.
10. Mount the stopper of the paper tray.
Push in the paper tray a little, mount the stopper which has been
removed in step 9, and secure it using the screw. At this time, check
that the pawl of the stopper is caught by the stopper block of the large
capacity tray.
Then push back gently the paper tray to its original position.
Paper size switching is complete here.
Insert the power plug of the copier to an outlet,
turn the power switch to the "ON" position and
then perform the following procedure.
11. Register the paper size.
•Register the paper size with the key operation of the copier.
The LCC size selection window will be displayed in the message
display with the operation above.
Select the number of the size to be registered in the message dis-
play, enter the number using the keys on the operation panel and
press the OK key to register it.
Then turn the power switch to the "OFF" position and then to the
"ON" position again.
12. Adjust the center position.
Since adjustment has been made at shipment, adjustment is basically
not needed. However, if the center should be displaced, adjust it
using the procedure below.
Make a copy. If the center is displaced as shown in Fig. 1 or Fig. 2,
pull out gently the paper tray until it stops.
Then, loosen the 2 screws at portion a which secure the tray lock
plate and the 8 screws at portion b (right and left sides) which secure
the tray cover unit to the frame and adjust the center position using
the procedure below.
Side plate R
Screws (blue)
Screws (blue)
Side plate F
Stopper block
Pawl
Stopper
Screw
2 6 2C
P
Left side Right side
Portion b
Portion a
Tray cover unit
Portion a
Direction A
Direction B
Scale (pitch in mm)
Tray lock plate
Portion b
3 – 4

•In case of Fig. 1:
Move the tray lock plate in direction A by the length of displacement,
tighten the 2 screws at portion a and then the 8 screws at portion b,
and make a copy again to check that the center is not displaced.
•In case of Fig. 2:
Move the tray lock plate in direction B by the length of displacement,
tighten the 2 screws at portion a and then the 8 screws at portion b,
and make a copy again to check that the center is not displaced.
Fig. 1
Center line of paper
Center of image (first image)
Center line of paper
Center of image (first image)
Fig. 2
3 – 5

[4] EXTERNAL VIEW AND INTERNAL CONSTRUCTION
1. External view
1. Tray down button/lamp
The tray can be opened by pressing the button. Use this button when adding paper or paper jam occurs.
2. Main parts
No. Name No. Name
1 Transport roller 2 Paper feed roller
3 Hitching roller 4 Reversion roller
5 Tray 6 Lift-up unit
7 Encoder 8 Height adjustment unit
9 Caster
1
123
4
5
6
7
8
9
4 – 1

PWB location
No Name Function and operation
1 Control PWB Controlling LCC
2 Tray switch PWB Tray lifting switch
Motor, clutch, solenoid, motor
Motor
No. Symbol Name Function and operation
1 LPFM Paper feed and transport motor Driving paper feed and transport systems
2 LLM Lift-up motor Driving tray lifting up
Clutch and solenoid
No. Symbol Name Function and operation
3 LPFC Paper clutch Driving paper clutch
4 LPFS Pick-up solenoid Operating pick-up roller
Motor
No. Symbol Name Function and operation
5 HT Dehumidifying motor Dehumidifying paper and preventing condensation of dew.
12
4 LPFS
3 LPFC
1 LPFM
2 LLM
5 HT
4 – 2

Sensor, detector location
No. Symbol Name Function and operation
1 LPFD Transport detector Detecting paper discharge
2 LLSW Upper limit lock switch Detecting tray upper limit lock (Shutting off motor as a safety device.)
3 LPED Paper detector Detecting the presence of paper
4 LUD Upper limit detector Detecting tray upper limit position
5 LRES Encoder sensor Controlling lifting up
6 LDD Lower limit detector Detecting tray lower limit position
7 LTOD Copier connection detector Detecting connection to copier
1 LPFD
7 LTOD
5 LRES
6 LDD
2 LLSW 4 LUD
3 LPED
4 – 3