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Disassembly and Reassembly
5
5. Disassembly and Reassembly
5.1 General Precautions on Disassembly
Releasing Plastic Latches
Many of the parts are held in place with plastic latches. The latches break easily; release them carefully. To remove such parts, press the hook end of the latch away from the part to which it is latched.
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, 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 documents are not stored in memory. 2. Be sure to remove the toner cartridge before you disassemble parts. 3. Unplug the power cord. 4. Use a flat and clean surface. 5. Replace only with authorized components. 6. Do not force plastic-material components. 7. Make sure all components are in their proper position.
Service Manual Samsung Electronics
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Disassembly and Reassembly
5.2 Top Cover
1. Pull the Cassette out of the printer. 4. Unlatch the front ends of the Top Cover.
Cassette
2. Remove the Front Cover in the direction of arrow.
5. Remove the Top Cover in the direction of arrow.
Top Cover
Front Cover
3. Remove four screws.
6. Remove the Rear Cover from the Top Cover.
Rear Cover
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Disassembly and Reassembly
5.3 Fuser
5.3.1 Fuser(Heat Lamp Type)
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2. Unplug two connectors(Block) from the boards, then remove four screws. 5. Remove one screw and take the Idle Gear out.
Idle Gear
Fuser Ass'y
6. Remove four screws and divide the Fuser into two parts
Fuser Cover
3. Remove two screws and take the Thermostat out of the Fuser.
Thermostat
4. Remove two screws and take the Halogen Lamp out of the Heat Roller.
Heat Roller
7. Remove the Thermister from the Fuser Cover.
Thermister
Halogen Lamp
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Disassembly and Reassembly
5.3.2 Fuser(Q-PID Type)
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2. Unplug two connectors(Block) from the boards, then remove four screws. 4. Remove two screws.
Fuser Ass'y
5. Remove one screw and take the Idle Gear out.
Idle Gear
3. Remove two screws and take the Thermostat out of the Fuser.
Thermostat
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Disassembly and Reassembly
6. Separate Heat Roller Ass'y after remove six screws and after removing 6 screws as shown in below, take out the heat roller assembly in direction of the arrow while pulling the both side of the unit-brush
7. Unplug Thermister Harness from the Fuser cover.
Thermister Harness
Fuser Cover
Unit-Brush
Heat Roller
8. Remove one screw and separate Thermister from the inter connector Fuser Cover.
Caution : · Be careful not to damage or contaminate the surface of the roller when assembling/disassembling the heat roller. · Additional state: Be careful especially not to damage the covering of the fusing assembly. (If the cover is damaged, it could cause an electric leakage.)
Thermister
Service Manual Samsung Electronics
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Disassembly and Reassembly
5.4 Exit Roller
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2.Remove the Exit Gear, Bearing and Exit Roller as shown below
1 2 Exit Gear Bearing Exit Roller
5.5 LSU
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2. Remove two screws and unplug one connector from the Frame. 4. Unplug two connector from the LSU
5. Unplug four screws and take the LSU out.
LSU
3. Remove the LED PBA Ass'y as shown below.
LED PBA Cover
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Service Manual Samsung Electronics
Disassembly and Reassembly
5.6 Fan
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2. Unplug the connector from the SMPS and remove the one screw. Then take out the Fan.
DC Fan
5.7 Driver Ass'y
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) 2. Remove the six screws from the Drive Ass'y. 3. Unplug one connector from the Driver Ass'y
Drive Ass'y
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Disassembly and Reassembly
5.8 Engine Shield Ass'y
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Fuser Connector(see page 5-3) 2. Remove the fourteen screws securing from the Engine Shield Ass'y and unplug the all connectors. Then take the Engine Shield Ass'y.
Engine Shield Ass'y
5.9 Main PBA
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Engine Shield Ass'y(see page 5-8) 2. Unplug one connector and remove five screws from the Main PBA. Then lift the Main PBA out, as shown below.
Main PBA
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Service Manual Samsung Electronics
Disassembly and Reassembly
5.10 SMPS
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Engine Shield Ass'y(see page 5-8) 2. Unplug one connector and remove three screws then take the Inlet Ass'y out.
Inlet Bracket
3. Remove one screw and unplug one connector from the Main PBA.
4. Remove three screws and take The SMPS out.
SMPS
Service Manual Samsung Electronics
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Disassembly and Reassembly
5.11 Transfer Roller
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - LSU(see page 5-6) 2. Remove three screws and take the Transfer Earth out. 3. Unplug the PTL Holder Connector, then remove the PTL Holder and PTL Lens, as shown below.
PTL Holder PTL Lens
Transfer Earth
4. Unlatch the Bush and remove it. Then lift the Transfer Roller out, as shown below.
Transfer Roller Bush
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Disassembly and Reassembly
5.12 Feed Roller
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Drive Ass'y(see page 5-7) 2. Remove two screws from the Guide Paper and take it out.
Guide paper
5. Remove the Idle Gear and Feed Gear2.
Feed Gear2
Idle Gear
6. Remove the Feed Gear 1 Ass'y, as shown below.
3. Pull up the Feed Idle Bush and Feed Idle Shaft, as shown below.
Feed Idle Shaft Bush
Feed Gear1 Ass'y
7. Remove the Feed Roller and Feed Roller 1, as shown below. 4. Remove three screws from the Feed Bracket and take it out.
Feed Bracket Feed Roller
Feed Roller1
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Disassembly and Reassembly
5.13 Pick Up Roller & Solenoid
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Drive Ass'y(see page 5-7) - Engine Shield Ass'y(see page 5-8) 2. Remove three screws from the Feed Bracket and take it out.
Feed Bracket Bush
4. Remove the Pick up Ass'y, as shown below.
1 2
Pick up Ass'y
5. Remove two screw then remove The Manual Solenoid and Pick Up Solenoid. 3. Remove the Pick up Gear Ass'y, as shown below.
Pick up Gear Ass'y (Pick up) Solenoid (Manual) Solenoid
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Service Manual Samsung Electronics