SHARP AR-SP4 Service Manual

SERVICE MANUAL

Digital copier option Single Pass Feeder (SPF)

MODEL AR-SP4

CONTENTS

[ 1 ] PRODUCT OUTLINE........... ............................................ ...................... 1

[ 2 ] SPECIFICATIONS ................................................................................. 1

[ 3 ] UNPACKING AND INSTALLATION....................................................... 1

[ 4 ] EXTERNAL VIEW AND INTERNAL STRUCTURE................................ 4

[ 5 ] OPEREATIONAL DESCRIPTIONS ....................................................... 5

[ 6 ] ADJUSTMENTS..................................................................................... 6

[ 7 ] DISASSEMBLY AND ASSEMBLY......................................................... 8

[ 8 ] MAINTENANCE....................................................................................13

[ 9 ] ELECTRICAL SECTION .......................................................................14

Parts marked with " " are 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.

This document has been published to be used

SHARP CORPORATION

for after sales service only. The contents are subject to change without notice.

[1] PRODUCT OUTLINE

This machine is a duplex document auto feeder attached to a digital copier.

It feeds originals automatically to allow continuous copying.

[2] SPECIFICATIONS

[3] UNPACKING AND INSTALLATION

1. Unpacking

Document set direction

Document set position

Document transport system

Document feed sequence

Document size AB series: A3 ~ A5

Document weight 56 ~ 90g/m Document set

quantity Dimensions 583mm (W) x 435mm (D) x 133mm (H) Weight About 5.0 kg Power source Supplied from the copier. (DC 24V) Power consumption 21W Document size

detection Detection size Japan: A3, B4, A4, A4R, B5, B5R,

Document mixture Mixture paper feed:

Random paper feed Unavailable Document reverse None Display section

(LED) Document

replacement speed

Face up

Center reference

Sheet through type

Top take-up feed

Inch series: 11 x 17 ~ 8.5 x 5.5

, 15 ~ 23.9lbs

Max. 30 sheets (30 sheets, 90g/m Max. thickness 4mm

On the document feed tray

A5 (A5R for FAX only)

Inch series: 11 x 17, 8.5 x 14, 8.5 x 11,

8.5 x 11R, 8.5 x 5.5

EX AB series: A3, B4, A4, A4R,

A5 (A5R for FAX only)

Copy mode: Unavailable FAX mode: Allowed (Same width)

None

S ® S: 23 sheets/min S ® S: 27 sheets/min

(Document replacement rate 100%)

)

2. Installation

Parts included

4. Remove the glass holde rs (rig ht an d le ft) and remo ve the document glass.

Remove the right and left glass holders and remove the document glass.

Right glass holder

Document glass

SPF glass cover

Turn off the main switch of the copier and then remove the power plug of the copier from the outlet.

1. Remove the plate n co ve r .

Lift the platen cover and remove it from the copier.

2. Remove the screws of the glass holders.

Remove the two screws (M3 x 8) of the left glass holder and the three screws (M3 x 8) of the right glass holder.

Left glass holder

5. Attach the front cabinet.

Attach the front cabinet of the copier. At this time, ensure that the three pawls on the rear side are securely inserted to the frame of the copier.

Pawls

Screws (M3 x 8)

3. Remove the front cabinet.

While raising the front cabinet toward your side, remove the three pawls from the rear side of the front cabinet.

Pawls

6. Attach the RSPF glass holder.

Insert the SPF glass holder to the document glass. Then, attach the document glass to the copier, fix the left glass holder that has been removed in step 3 using two screws (M3 x 8), and fix the SPF glass using three screws (M3 x 8).

SPF glass holder

Document glass

Screws (M3 x 8)

7. Attach the SPF.

Insert the hinge portion of the SPF to the mounting portion of the copier by holding the SPF at an angle toward the rear side.

Hinge

8. Connect the relay connector.

Connect the Centronics connector of the SPF to the connector of the copier and then tighten the screws of the connector.

If the magnification ratio of the copy from the SPF is different from that of the copy from the document glass, carry out adjustment referring to the service manual.

12. Check the center di splacement.

Set an original on the document glass and copy it. Then, set an original in the document feeder tray and copy it.

If the center of the copy image from the SPF is different from that of the copy image from the document glass, carry out adjustment referring to the service manual.

13. Check the top end position.

Set an original on the document glass and copy it. Then, set an original in the document feeder tray and copy it.

If the top end position of the copy image from the SPF is different from that of the copy image from the document glass, carry out adjustment referring to the service manual.

14. Check the open/close detection position.

If the open/close detection position measured with the open/close detection position adjustment method described in the service manual does not conform to the specifications, carry out adjustment referring to the service manual.

Installation of SPF is now complete.

Screw

9. Remove the filament tape.

Remove the filament tape located in the positions shown in the illustration.

Filament tape

Insert the power plug of the copier to the outlet and turn on the main switch of the copier.

10. Adjust the SPF whit e co mp en sa tio n pixels.

Open the SPF, execute simulation 63-7, and adjust the SPF automatic white compensation pixels.

11. Check the copy magnification ratio.

Set an original on the document glass and copy it. Then, set an original in the document feeder tray and copy it.

[4] EXTERNAL VIEW AND INTERNAL STRUCTURE

1. External view

No. Name No. Name No. Name

1 Document set tray 2 Document guide 3 Document feed section cover 4 Document transport section cover 5 Document exit section

2. Internal structure

Sensors and detectors

No. Code Name Type Function, operation

1 W0 Document set sensor Photo transmission Document presence detection 2 COVER Open/close sensor Photo transmission Paper feed unit open/close detection 3 W1 Document sensor (A4R, LTR, A5) Photo transmission Tray document width detection 4 W2 Document width sensor (B4R, B5) Photo transmission Tray document width detection 5 W3 Document width sensor (WLTR, A5R, A4, LT) Photo transmission Tray document width detection 6 PSOL Pickup solenoid — — 7 PAPER Paper entry sensor Photo transmission Document presence detection

9 CLH Transport clutch — — 10 MOT SPF motor Stepping motor Tray paper feed, transport, paper exit roller drive 12 — Interface PWB — SPF control and communication with the copier body 13 L1 Document length detection SW (Short) Photo transmission Tray document length detection 14 L2 Document length detection SW (Long) Photo transmission Tray document length detection 15 COVER OPEN Book sensor Photo transmission Dete cts SPF floating. 16 PO Paper exit sensor Photo transmission Detects transport of document.

[5] OPEREATIONAL DESCRIPTIONS

3. Document size detection

1. Paper feed section major parts

3,4

1011

No. Part name Operation

1 Document length

sensor (L2)

2 Document length

sensor (L1)

3 Document length

sensor (W0)

4 Document width sensor

(W1, W2, W3) 5 Pickup roller Picks up the document. 6 Paper feed roller Feed and transport the document. 7 Paper entry sensor

(PAPER) 8 PS roller Makes synchronization between

9 PS follower roller Makes synchronization between

10 Transport roller Transports the document. 11 Transport follower roller Transports the document. 12 Paper exit sensor Detects transport of documents. 13 Paper exit follower roller Discharges the document. 14 Paper exit roller Discharges the document.

Detects the document length on the tray.

Detects the presence of document.

Detects the document width.

Detects the document transport.

the document lead edge and the image lead edge.

2. Brief descriptions of operations

1) Document set (Document set sensor ON)

Document size detection (The document width is detected with document width sensors W1, W2, and W3, and the document length is detected with document length sensors L1 and L2.)

3) Copy start (Machine)

4) SPF motor ON

5) Pickup solenoid ON

6) Pickup roller and paper feed roller rotation

7) Paper entry sensor detects paper presence.

8) PS roller rotation

Document size detection by document set tray

When a document is set on the document set tray in the auto mode of paper/copy magnification ratio selection, the document size is detected to perform the auto selection function of paper and the copy magnification ratio according to the detected document size.

When documents of different sizes are mixed and set on the tray, the max. size is detected. The document width is detected by the document width sensors (W1, W2, W3), and the document length is detected by the document length sensors (L1, L2) to determine the document size.

The document size judgment is made after a certain time from when the document set sensor (W0) detects the document.

Document size

and set direction

A5 B5

A5R

series

Inch

series

[Note] Sensor ON: , OFF:

A4 B5R A4R

8.5" x 13" B4 A3

8.5" x 5.5"

8.5" x 5.5"R 11" x 8.5"

11" x 8.5"R

8.5" x 13"

8.5" x 14"

11" x 17"

Document width sensor

W1 W2 W3 L1 L2

Document

length sensor

9) Copy operation ( Machine)

10) Transport roller rotation

11) Paper exit roller rotation

12) Document exit

YES

13) Next document

14) SPF motor OFF

[6] ADJUSTMENTS

(1) SPF auto white correction pixel adjustment

(2) RSPF magnification ratio adjustment

[Function] The SPF white correction start pixel position is automatically adjusted.

This adjustment is performed after the lens unit is replaced.

[Operation] (Initial screen)

Sim63-7 SPF ADJ. WHITE ADJUST

PRESS OK KEY EXEC

Press

the [OK] key.

Press

the [RETURN] key.

(During execution)

Sim63-7 SPF ADJ. WHITE ADJUST

EXEC

During execution, "EXEC" is highlighted.

Normal end Abnormal end

Open the SPF unit and press the [OK] key. [ ] indicates the order number of the pixel of the white sheet for SPF exposure correction in the SPF position.

When the adjustment is completed normally, "COMPLETE" is displayed, and data are written into the EEPROM. When the adjustment is completed abnormally, "ERROR" is displayed and data are not written into the EEPROM.

[CA] key: Cancels the test command. [Interruption] key: Shifts to the sub code entry menu. [OK] key: Shifts to the execution menu.

The SPF white correction start pixel = Displayed pixel position - 34

Interruption is inhibited during execution.

If the simulation is executed with the SPF unit closed, an error is resulted.

1) Place a scale on the document table as shown below, and make a

2) Set the test chart to the SPF and make a normal copy.

3) Compare the copy and the test chart.

4) Execute SIM 8-1. The auto exposure lamp lights up.

5) The current correction value is displayed on the display section in

(Initial screen with the execution result displayed)

Sim63-7 SPF ADJ. WHITE ADJUST CPMPLETE [160] PRESS OK KEY EXEC

Sim63-7 SPF ADJ. WHITE ADJUST ERROR [ 0] PRESS OK KEY EXEC

6) Enter the set value, and press the START key.

7) Change the duplex document mode to the simplex document

8) Enter the set value, and press the SATART key.

Mode Spec SIM Set value Set range

Magnification ratio adjustment Normal: ± 1.0% SIM 48-1

4: SPF surface magnification ratio adjustment 5: SPF back magnification ratio adjustment

Note : When performing this adjustment, check that the CCD unit

is properly installed.

: When perf orming this adjustment, check that the OC mode

adjustment in copying is completed.

normal copy to make a test chart.

Note: Since the printed paper is used as the test chart, place the scale in parallel to both sides.

If an adjustment is needed, perform the following procedures.

two digits.

The entered correction value is stored and a copy is made.

mode. The MANUAL lamp lights up, and the current correction value of the back surface sub scanning direction magnification ratio is displayed on the display section in two digits.

The entered correction value is stored and a copy is made.

Add 1: 0.1% increase

1 ~ 99

Reduce 1: 0.1% decrease

(3) SPF document off center adjustment

Note : When performing this adjustment, check that the paper off-

center is properly adjusted.

1) Set the center position adjustment test chart (m ade by yourself) on the RSPF.

Draw a line in the center of paper. (In the scanning direction)

Mode Specification SIM Set value Set range

Document off-center (SPF mode) Simplex: Center ± 3.0mm

Duplex: Center ± 3.5mm

2) Make a normal copy from the manual feed tray, and compare the copy and the test chart. If an adjustment is required, perform the following procedures.

3) Execute SIM 50-12.

4) The current off-center adjustment value is displayed on the display section in two digits.

5) Enter the set value and press the START key. The entered correction value is started and a copy is made.

SIM 50-12

2: SPF surface

Add 1: 0.1mm shifted to R side. Reduce 1: 0.1mm shifted to L side.

1 ~ 99

3: SPF back

+ 14 hidden pages