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3. Disassembly and Reassembly
3-1. General Precautions on Disassembly
When disassemble and reassembling components, 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 replaced 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 the following: 1. Check that documents are not stored in memory. 2. Remove the print cartridge. 3. Unplug the power cord. 4. Work on a flat and clean surface. 5. Replace only with authorized components. 6. Do not force plastic components. 7. Make sure all components are in their proper position.
3-2. White Roller
1. Lift the control panel. 2. Push the white clip on each end of the roller slightly inward, then rotate it until it reaches the slot, as shown below. Then lift the roller out. Note : Check the roller for dirt. If dirty, wipe it off with soft cloth dampened with water. If the roller is heavily worn, replace it with a new one.
B
White roller Control panel
A
White clip
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Disassembly
3-3. Rear Cover
1. Holding the paper guide, move it in the direction of arrow. 3. Holding the rear cover ass'y, take it out by rotating it to release properly.
Paper guide
4. Remove the Rom cover.
2. Remove the five screws, as shown below.
ROM Cover
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3-4. Top Cover and Speaker
1. Before you disassemble the top cover, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) 2. Release the tie stopper supporting the control panel. 4. If you want to remove the speaker, turn the top cover over, and remove the two screws securing it.
Tie stopper
3. Remove the two screws and hit part"a","b" with hand slightly for opening the cover.
b
a
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Disassembly
3-5. Scan Motor
1. Before disassembling the scan motor, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3)
2. Remove the ground screw securing the motor to the motor bracket.
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Disassembly
3-6. ADF Roller and Contact Image Sensor (CIS)
1. Before disassembling the roller and CIS, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) 4. Unplug the CIS harness, then remove the CIS ass'y. To remove the CIS ass'y, turn it up and slide the two legs far left, and pull it up.
2. Remove the Scan motor bracket.
3. Remove the ADF roller. When you assemble the roller, make sure it is properly hooked.
5. Remove the CIS from the bracket.
CIS
Note : Clean the surface of the roller with ethyl alcohol. After wiping it, you must dry it completely.
Note: Check the glassy surface of the CIS for stains or scratches. If stained, wipe off with ethyl alcohol. If it is heavily scratched, replace it with a new one.
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Disassembly
3-7. SMPS
1. Before disassembling the SMPS, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) 3. Pulling the snaps locking the board outward, remove the SMPS.
2. Remove the two ground screws from the bracket, as shown.
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Disassembly
3-8. LIU Board
1. Before disassembling the board, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) 4. Remove the LIU Insulatio.
2. Unplug all the connectors from the board.
LIU Insulation
3. Remove the screw and unplug the spacer -support from the LIU board.
Spacer support
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Disassembly
3-9. OPE Unit
3-9-1. ADF Rubber Pad
1. Open the control panel,and release the tie stopper supporting the control panel. Notes: · When reassembling the rubber pad, be sure that it and the holder fit into the guide boss and the holder latches fit into the corresponding hole. Then push firmly until it clicks.
Tie stopper
2. Insert a flat blade screw driver into the slot as shown below, and remove the rubber holder and the rubber pad.
· Clean the surface of the rubber pad with ethyl alcohol. After wiping, be sure to dry it. Check for rubber wear. If the wear reaches 1/2 its original thickness, replace it with a new one.
Rubber holder
Rubber pad
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Disassembly
3-9-2. OPE Unit
1. Before disassembling the OPE unit, you should remove: Rear Cover (see page 3-2) Top Cover (see page 3-3) LIU Board (see page 3-7) 4. Remove the microphone and the two screws.
2. Unplug the connector from the LIU board, and pull up the OPE unit.
Microphone
5. Remove the OPE board,and remove the LCD.
LCD
3. Remove the two screws and remove the cover.
Notes: · Do not turn the OPE unit upside down after you remove the screws securing the board. Keys and rubber contacts may be separated and easily lost. · When reassembling the OPE unit, make sure the keys are in correct position. · When reassembling the board, secure the screws according to the order printed on the PBA. · After reassembling, operate the machine to make sure it works properly. · After reassembling, make sure the LCD is not blocked.
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Disassembly
3-10. Printer Unit
1. Before disassembling the printer unit, you should remove: Rom Cover Rear Cover Top Cover LIU PBA (see page 3-2) (see page 3-2) (see page 3-3) (see page 3-7) 3. Remove the four screws securing the printer unit, and unplug the three connectors from the main board.
2. Slide the cartridge carrier, as shown below.
The connectors are located as shown below. It is not necessary to unplug the LF motor , LIU , CR motor , Carridge connector to remove the printer unit.
TX Motor CR motor
LIU
LF motor
Carriage Carridge
TAD LIU
4. Remove the printer unit. When you pull up printer unit, be careful to properly release the harnesses.
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3-11. ASF Feeder
1. Before disassembling the ASF feeder ass'y, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) 4. Remove the screw securing the pickup shaft. To remove the pickup shaft, pull it to the far right and take it out.
2. Remove the two screws securing the ASF feeder.
Pickup shaft
3. Unlock the ASF feeder assembly, and remove it.
Note : When reassembling the ASF feeder ass'y, insure the harness for the line feed motor is not pinched or shorted.
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Disassembly
3-12. Printer Unit Miscellaneous
3-12-1. Cartridge Carrier Home Assembly
1. Before disassembling the cartridge carrier home, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) Printer Unit (see page 3-10)
3-12-2. Cartridge Carrier Assembly
1. Before disassembling the cartridge carrier assembly, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) Printer Unit (see page 3-10) Cartridge Carrier Home Assembly (see page left) ASF Feeder (see page 3-11) Main Board (see page 3-15)
2. Remove the screw securing the cartridge carrier home, and take it out.
2. Remove the springs on the both side of the frame. Release the timingbelt and lift up the catridge carrier.
Carrier shaft
Holder
Carrier
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Disassembly
3-12-3. Base Frame Assembly
1. Before disassembling the base frame assembly, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) Printer Unit (see page 3-10) Cartridge Carrier Home Assembly (see page 3-12) Cartridge Carrier Assembly (see page 3-12) ASF Feeder (see page 3-11) Main Board (see page 3-15)
4. Remove the base frame assembly.
Holder roller
2. Remove the roller friction assemblies, then the actuator feed holder.
Roller friction Ass'y
3. Remove the holder roller.
Base frame Ass'y
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Disassembly
3-12-4. Feed Roller Assembly and Line Feeder Bracket Assembly
1. Before disassembling the feeder roller ass'y, and/or the line feed bracket ass'y, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) Printer Unit (see page 3-10) Cartridge Carrier Home Assembly (see page 3-12) Cartridge Carrier Assembly (see page 3-12) Base Frame Assembly (see page 3-13)
3. Remove the two screws, then remove the feeder bracket assembly.
2. Remove the feed bearing from the main frame. Pull the feeder roller in the direction of arrow, and take it out.
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Disassembly
3-13. Main Board
1. Before disassembling the main board, you should remove: Rom Cover (see page 3-2) Rear Cover (see page 3-2) Top Cover (see page 3-3) ASF Feeder (see page 3-11) 3. Unplug all connectors from the main board. Then, pull the sensor lever towards you and remove the main board.
2. Remove the three screws securing the main board.
Sensor lever
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