Samsung SF6500 Disassemble

Samsung Electronics 6-1

6. Disassembly and Reassembly

6-1 General Precautions on Disassembly

When you disassemble and reassemble components, you must use extreme caution. The close proximity of cables to moving parts makes proper routing a must. If components are removed or replaced, any cables disturbed by the procedure must be restored as close as possible to their original positions. Before removing any component from the machine, note the cable routing that will be affected.

Whenever servicing the machine, you must perform as follows:

1. Check to verify that no documents are stored in memory. You can check it by printing the Delayed Dial List. Press MENU, one-touch 17 'DELAYED DIAL', ENTER sequentially.

2. Remove the paper cassette, trays, and toner cartridge.

3. Unplug the power cord.

4. Use a flat and clean surface.

5. Replace with only an authorized component.

6. Do not force to open or fasten a plastic-material component.

7. Be careful no obstacles are included when you reassemble components.

8. When you assemble components, be careful small-sized components are located in place.

6-2 Scan Unit

1. Open the control panel by hand, remove the two screws A. Remove the TX piece. Then remove three screws B.

2. Close the Control panel, and take out the Scan unit. Unplug the connector from the Scan PBA.

Figure 6.1 Figure 6.2

TX piece

Scan Unit

Disassembly and Reassembly

6-2

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6-4 ADF Rubber Pad

1. Open the control panel by hand.

2. Insert a flat blade screw driver into the slot and force to remove the rubber as shown in the figure below.

6-3 White Roller Assembly

1. Open the control panel by hand.

2. Push the bushing at both ends of the roller slightly inward, then rotate it in the direction of (A) until it reaches the slot as shown in the figure below. Then take out the roller in the direction of (B).

Notes: When you reassemble the pad, be sure that

the rubber pad and holder fit into the guide boss and the holder tabs fit into the corresponding hole. Then push them firmly until it clicks.

¥ Clean the surface of the rubber pad with ethyl

alcohol. After wiping it, be sure to dry completely with a soft cloth. Check the rubber wear. If the wear reaches 1/2 its original thickness, replace it with a new one.

Bushing

White roller

Figure 6.3

Figure 6.4

Figure 6.5

ADF rubber

Guide boss

Note: Check the roller for any stain. If stained, wipe

it off with soft cloth dampened with alcohol. If the roller is heavily worn, replace it with a new one.

Disassembly and Reassembly

6-3

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OPE unit

Figure 6.7

Figure 6.6

6-5 OPE Unit

1. Before you disassemble the OPE unit, you should remove : ¥ Scan unit (See page 6-1)

2. Turn the scan unit over. Place the unit on soft cloth to avoid the accidental scratch on the surface of the unit.

3. Unplug the OPE connector from the scan PBA and remove the one earth screw.

4. Open the OPE cover. Twist the tie stopper until it is released. The OPE unit has secured by the tabs on the bottom end to the Scan unit as shown. Pull the tabs outwards so that the OPE unit is separated from the Scan unit.

Tab

Tie stopper

Samsung Electronics6-4

Disassembly and Reassembly

Scan paper guide

CIS

Figure 6.8

6-6 CIS

1. Before you disassemble the CIS, you should remove :

♦ Scan unit (See page 6-1) ♦ White roller (See page 6-2) ♦ OPE unit (See page 6-3)

2. Remove the two screws securing the Scan paper guide and take out the paper guide.

3. Remove the one special screw securing the CIS.

Figure 6.9

4. Unplug one connector from the CIS. Pull up the left end of the CIS, then take out the CIS in the direction of B.

Figure 6.10

Notes:

¥ After you replace the CIS, you must perform the

Make shading procedure. For details, see page 7.3.

¥ Check the glass surface of the CIS for any stain or

scratch. If stained, wipe off with ethyl alcohol. If it is heavily stained or scratched, replace it with a new one.

¥ When you assemble the scan paper guide, make

sure the tabs in the guide fit in place.

Figure 6.11

Disassembly and Reassembly

6-5

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Note: Clean the surface of the rollers with ethyl

alcohol. After wiping them, be sure to dry completely with a soft cloth.

6-7 Rollers (ADF, Feed, D.Exit)

1. Before you disassemble the roller, you should remove :

♦ Scan unit (See page 6-1) ♦ White roller (See page 6-2) ♦ OPE unit (See page 6-3)

2. Remove the two screws securing the scan paper guide and take out the Scan paper guide.

Figure 6.8

3. Take out the rollers from the Scan unit.

Figure 6.12

ADF roller

Feed roller

D. Exit roller

Samsung Electronics6-6

Disassembly and Reassembly

3. Turn the Scan unit back. Remove the two screws securing the Scan paper guide, and take out the scan paper guide.

6-8 Scan Motor

1. Before you disassemble the Scan motor, you should remove :

♦ Scan unit (See page 6-1) ♦ White roller (See page 6-2) ♦ OPE unit (See page 6-3)

2. Turn the scan unit over and unplug the motor connector from the Scan PBA.

Figure 6.13

Figure 6.8

Scan Paper Guide

4. Remove the two screws securing motor cover and take out the motor cover.

6. Remove the two screws securing the motor to the motor bracket.

Motor bracket

Figure 6.14

Figure 6.16

5. Remove the two screws securing the motor to the Scan unit, and take out the motor ass'y.

Figure 6.15

Disassembly and Reassembly

6-7

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6-9 Roll Pinch

1. Before you disassemble the Roll pinch, you should remove :

♦ Scan unit (See page 6-1) ♦ OPE unit (See page 6-3)

2. Remove the five screws from the OPE unit.

3. Turn the scan upper frame of the OPE unit over.

4. Remove the three screws and take out the spring pinch. The roll pinch is separated.

Figure 6.17

Figure 6.18

Roll pinch

Spring pinch

6-10 Scan PBA

1. Before you disassemble the Scan PBA, you should remove :

♦ Scan unit (See page 6-1)

2. Turn the Scan unit over and unplug all connectors from the scan PBA.

3. Remove the one screw securing the Scan PBA and take out the PBA.

Figure 6.19

Figure 6.20

6-8 Samsung Electronics

Disassembly and Reassembly

6-11 OPE PBA

1. Before you disassemble the OPE PBA, you should remove :

♦ Scan unit (See page 6-1) ♦ OPE unit (See page 6-3)

2. Remove the five screws from the OPE unit to separate the scan upper frame as shown.

3. Remove the twelve screws as shown and take out the PBA and the LCD.

Figure 6.21

Figure 6.22

Notes:

¥ After you remove the screws securing the PBA,

turn the PBA side up and remove the rubber contact carefully if it is still attached into the PBA. Be careful. Keys and rubber contacts may be separated and you might loss any of them.

¥ When you assemble the OPE unit, make sure the

keys are in correct position so as not to make improper contacts.

¥ When you reassemble the PBA, secure the screws

according in the order of the number printed in the PBA.

¥ After reassembling, operate the machine to make

sure it works properly.

¥ After reassembling, make sure there is no foreign

material in the LCD.

Figure 6.23

4. Move the PBA in the direction of arrow; then remove the one screw.

6-12 Toner Lever

1. Open the Operation unit assembly by pressing the release button on the left side of the machine.

Disassembly and Reassembly

6-9Samsung Electronics

Figure 6.24

Figure 6.25

2. Remove the Toner lever inserted into the main frame by squeezing both sides of the lever and pulling it out.

Toner Lever

Disassembly and Reassembly

6-10 Samsung Electronics

2. Remove the five screws , and take out the TX piece.

6-13 Side Covers (Left/Right)

1. Open the Control panel by hand.

3. Close the Control panel and take out the Scan unit. Then unplug the connector from the Scan board.

4. Remove the two screws from the colored bar. Then remove the four screws from each Side cover.

Figure 6.29

Figure 6.26

Figure 6.27

Figure 6.28

OPE Unit

TX piece

Disassembly and Reassembly

6-11Samsung Electronics

5. Turn the machine 90 degrees backwards to set the back side up and release the L-shaped tab on the bottom of the Side cover latched into the main frame. Then take out each side cover.

6-14 Top Cover

1. Before you disassemble the Top cover, you should remove :

♦ Side covers (See page 6-10)

2. Remove the four screws from the Top cover and take out the cover.

Note: When you reassemble the Side covers, you

should first hook the L-shaped tabs into their places and push the top side of the cover firmly.

Figure 6.30

Figure 6.32

Figure 6.31

6-12 Samsung Electronics

Disassembly and Reassembly

6-15 Rear Cover

1. Before you disassemble the Rear cover, you should remove :

♦ Side covers (See page 6-10) ♦ Top cover (See page 6-11)

2. Remove the two screws from the Rear cover. And release the tabs latched into the main frame and take out the Rear cover.

6-16 Speaker

1. Before you disassemble the Speaker, you should remove :

♦ Left side cover (See page 6-10)

2. Remove the two screws securing the Speaker to the main frame and unplug the speaker connector. Then take out the Speaker.

Note: When you reassemble the Rear cover, hook

the tabs located on the lower end in place, and then push the top side, so that the tabs on the upper end are fitted in place.

Figure 6.33

Figure 6.35

Figure 6.34

Speaker

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