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Troubleshooting
7
7. Troubleshooting
7.1 Bad image
7.1.1 Vertical Black Line and Band
· Description 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. Check and Cause 1. Damaged developer roller, deformed Doctor-blade or cleaning-blade in the Toner cartridge. 2. Scratched surface of the charge roller in the toner cartridge. 3. 3. Depression or deformation of the surface of the transfer roller. Solution 1. Replace the toner cartridge and test again.
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2. Replace the toner cartridge and test again. 3. Replace the transfer roller and test again.
7.1.2 Vertical White Line
· Description White vertical voids in the image.
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Check and Cause 1. 1. Contamination of the window or internal lenses of LSU mirror.
Solution 1. Clean the LSU window with recommended cleaner (IPA) Clean the window with a clean cotton swab. If dirt is inside the LSU replace LSU. 2. Replace the toner cartridge.
2. Foreign object inside the toner cartridge or low toner. 3. Foreign object, contamination or burr on the edge of the toner cartridge window. 4. If the fuser is defective, voids occur periodically at the top of a black image.
3. Clean the exposure window.
4. Open the front cover and check the ribs that correspond to the position of the voids. Remove if found. 5. If the problems are not solved, replace the toner cartridge. 6. Replace the transfer roller.
5. Contamination of the OPC drum.
6. Depression or deformation of the surface of the transfer roller
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Troubleshooting
7.1.3 Horizontal Black Band
· Description 1. Dark or blurry horizontal stripes occur in the printing periodically. (They may not occur periodically.) Check and Cause 1. Bad contacts on the toner cartridge high voltage terminals. Solution 1. Clean all HV terminals on the cartridge and on the set frame. Ensure all toner or paper dust particles are removed. 2. Clean the right Gear that has relatively small tooth gap on the OPC.
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2. The rollers in the toner cartridge may be contaminated. Charge roller = 37.7mm Supply roller = 47.8mm Develop roller = 35.2mm Transfer roller = 45.3mm
3. If the problem persists replace the toner cartridge.
7.1.4 Black/White Spot
· Description 1. Dark or blurry black spots occur periodically in the printing. 2. White spots occur periodically in the printing. Check and Cause 1. If dark or blurry black spots occur periodically, the rollers in the Developer may be contaminated with foreign matter or paper particles. ( Charge roller : 37.7 mm interval OPC drum : 75.5 mm interval) 2. If faded areas or voids occur in a black image at intervals of 75.5 mm, or black spots occur elsewhere, the OPC drum surface is damaged. Solution 1. Print several OPC cleaning Mode Prints and then run the Self-test 2 or 3 times.
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2. 75.5 mm repetition: Examine the surface of the OPC drum and carefully clean with a soft, lint free cloth. If unsuccessful replace the cartridge. 37.7mm repetition: Replace the toner cartridge
3. If a black image is partially broken, the transfer voltage is abnormal or the transfer roller's life has expired.
3. The transfer roller guarantees 60,000 sheets printing. If the roller's life is expired, replace it. Note. Cleaning the inside of the set to remove excess toner particles or paper dust will reduce the occurrence of this problem..
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Troubleshooting
7.1.5 Light Image
· Description The printed image is light, with no ghost.
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Check and Cause 1. Toner Save mode enabled
Solution 1. Ensure the Toner Save mode is off. Check set and driver settings. 2. Replace the toner cartridge and try to print out again. 3. Wait 30 minutes after printer is powered on before you start printing. 4. Clean the cartridge and set contacts. Generally clean dirt from inside the set. 5. Replace the HVPS if the problems are not solved by the above four instructions.
2. Develop roller is contaminated or the toner cartridge is almost empty. 3. Ambient temperature is below than 10°C.
4. Bad contact caused by dirty terminals on the toner cartridge or set. 5. Abnormal output from the HVPS.
7.1.6 Dark Image or a Black
· Description The printed image is dark.
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Check and Cause 1. No charge voltage in the engine board.
Solution 1. Check the state of the connector which connects the engine board and HVPS. 2. Clean the high voltage charge terminals. Note if 1 and 2 do not resolve the problem and the problem persists replace the HVPS.
2. Charge voltage fault due to bad contact between toner cartridge and set contacts.
3. VD0 signal of the Main PBA is Low state.
3. Replace the LSU Unit or Main PBA.
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Troubleshooting
7.1.7 Uneven Density
· Description Print density is uneven between left and right.
Check and Cause 1. The pressure force on the left and right springs of the transfer roller is not even, the springs are damaged, the transfer roller is improperly installed, or the transfer roller bushing or holders are damaged. 2. The life of the Toner cartridge has expired. 3. The toner level is not even on the toner cartridge roller due to the damaged blade or low toner.
Solution 1. Replace both the left and right bush and spring assemblies.
2. Replace the toner cartridge and try to print out
3. Gently shake the toner cartridge and try printing again. If the problem persists replace the toner cartridge.
7.1.8 Background
· Description Light dark background appears in whole area of the printing.
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Check and Cause 1. Printing large quantities of low coverage (2%) pages or the printer has not been used for a long time.
Solution 1. The toner cartridge is basically designed to print 3,000 sheets with 5% image. If it prints more than 3,000 sheets with 2% coverage, a background can occur. 2. The B/S is not guaranteed if using recycled paper. Note try shaking the toner cartridge gently from side to side. If the problem persists replace the toner cartridge.
2. Is recycled paper being used?
3. Has the life span of the toner cartridge ended? 4. Is the movement(Up and Down) of the transfer roller smooth? 5. Is the HVPS normal?
3. Replace the toner cartridge when its life is expired. 4. Clean the transfer roller bushes.
5. Clean the high voltage charge terminals. If this does not resolve the problem replace the HVPS.
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Troubleshooting
7.1.9 Ghost (1)
· Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing.
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Check and Cause 1. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the electrode of the Toner cartridge. 2. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the one in the HVPS board. 3. The life of toner cartridge is expired.
Solution 1 and 2. Clean all HV contacts, If problem persists replace the HVPS. If problem still persists replace the Main PBA
7.1.10 Ghost (2)
· Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing. (When printing on card stock or transparencies using manual feeder) Check and Cause When printing on card stock, thicker than normal paper or transparencies, such as OHP, a higher transfer voltage is required. Solution Ensure that the correct paper type is selected in the printer driver or application software. Remember to set back to normal paper after use.
75.5mm 75.5mm
3. Replace the toner cartridge and try to print out. 4. Check the transfer roller lifetime and replace it. 5. Wait about 30 minutes after power on before using printer. 6. Replace the toner cartridge and try to print out again
4. Transfer roller life (60,000 sheets) has expired. 5. Low ambient temperature (below 10°C).
6. Damaged cleaning blade in the toner cartridge.
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Service Manual
7-5
Troubleshooting
7.1.11 Ghost (3)
· Description Ghost occurs at 75.5mm intervals.
Check and Cause
Solution 1. Disassemble the fuser and remove any contamination on the rollers. Clean any contamination from between the Thermistor and the Heat roller. (Caution: Take care not to deform the rollers.)
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Fuser contamination or temperature control problem.
7.1.12 Ghost (4)
· Description A White ghost occurs in a black image printing at 35.2 mm intervals.
75.5mm 35.2mm
Check and Cause
Solution 1. Problem in the toner cartridge, replace the toner cartridge and try to print out again. 2. Check the HVPS supply voltage. Clean all HV terminals on the cartridge and on the set. Replace the HVPS if the problem persists.
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1. The life of the developer may be expired.
2. Abnormal output from the HVPS.
7.1.13 Stains on the Face of Page
· Description The background on the face of the printed page is stained.
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Check and Cause 1. Toner leakage due to improperly sealed developer. 2. If the charge roller is contaminated, stains on the face of page will occur.
Solution 1. Replace the developer cartridge.
2. If the charge roller is contaminated, run PC Cleaning Mode Print 2 or 3 times. And perform Self-Test 2 or 3 times to remove contamination.
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Troubleshooting
7.1.14 Stains on Back of Page
· Description The back of the page is stained at 45.3 mm intervals.
Check and Cause
Solution 1. Perform the OPC Cleaning Mode Print 2 or 3 times. Run Self-Test to remove the contamination from the transfer roller. Note. Replace the transfer roller if contaminated severely. 2. Disassemble the fuser and clean the H/R(Heat Roller) and P/R(Pressure roller). Check and clean the area between the H/R and the Thermistor. (Caution: Take care not to deform the rollers.)
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1. Transfer roller is contaminated.
2. Pressure roller is contaminated.
7.1.15 Blank Page Print out (1)
· Description Blank page is printed.
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Check and Cause Bad ground contacts in OPC and/or toner cartridge.
Solution 1. Check if the Ground-OPC or the OPC Ground Zener diode are defective or open circuit. (set inside left side). 2. Remove contamination of the terminals on the toner cartridge and the unit.
7.1.16 Blank Page Print out (2)
· Description 1. Blank page is printed. 2. One or several blank pages are printed. 3. When the printer turns on, several blank pages print. Check and Cause 1. Bad ground contacts in OPC and/or toner cartridge. 2. Abnormal solenoid. 1. See 7.1.15 above 2. Perform the engine self test using DCU (refer to code 6) to check if the Solenoid is normal. If the problem persists replace the engine PBA Solution Try turning the power off, deleting any print jobs in the PC print queue and then try printing again.
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Troubleshooting
7.2 Paper Feed problems - Causes and Solutions
7.2.1 Wrong Print Position
· Description Printing begins at wrong position on the paper.
Check and Cause Wrong sense time caused by defective feed sensor actuator.
Solution Replace the defective actuator
7.2.2 JAM 0
L S U
Fuser
EXIT Sensor
CR DR PR OPC SR
Toner Cartridge
· Description 1. Paper is not exited from the cassette. 2. Jam-0 occurs if the paper is not ted into the printer.
PTL
TR
Feed Sensor
MP Sensor
FR
P IC
Empty Sensor
Check and Cause 1. Check the Solenoid by using DCU Diagnostic Mode 06. 2. Check cassette/MP knock-up plate and springs. 3. Check paper separator pad
K /R
Solution 1. Replace the solenoid. 2. Repair / replace as required 3 Clean with soft cloth dampened with IPA (Isopropyl Alcohol) or water. Replace if required. 4. Clean with soft cloth dampened with IPA (Isopropyl Alcohol) or water. Replace if required 5. Ensure all rollers are clean and free to operate correctly. 6. Check the SMPS PBA, Main PBA and all connections. Replace any faulty parts or the
4. Check the pick up roller for contamination and correct assembly.
5. If continuous clusters occur, check all rollers between pickup and registration sensor. 6. If the paper feeds into the printer and Jam 0 occurs, use DCU to check feed sensor.
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Troubleshooting
7.2.3 JAM 1
L S U
Fuser
EXIT Sensor
CR DR PR OPC SR
Toner Cartridge
· Description 1. Recording paper is jammed in front of or inside the fuser. 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator-Feed.
PTL
TR
Feed Sensor
MP Sensor
FR
P IC
Empty Sensor
Check and Cause 1. If the recording paper is jammed in front of or inside the fuser. 2. If the recording paper is stuck in the discharge roller and the fuser just after passing through the ActuatorFeed, Feed Actuator may be defective.
K /R
Solution 1. Replace the Exit-Sensor, SMPS or main PBA.
2. Reassemble the Actuator-Feed and Spring-Actuator if the movement is bad. Replace if necessary.
7.2.4 JAM 2
L S U
· Description
Fuser
EXIT Sensor
CR DR PR OPC SR
Toner Cartridge
PTL
TR
Feed Sensor
MP Sensor
FR
P IC
Empty Sensor
1. Recording paper is jammed in front of or inside the fuser. 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator-Feed.
Check and Cause 1. If the paper is completely fed out of the printer, but Jam 2 occurs : Exit sensor is defective. · After the paper is completely discharged the Exit sensor actuator should return to its original position to shut the photo-sensor. It may stick open or return only slowly due to contamination be paper debris or foreign objects.
K /R
Solution 1. Check if the exit sensor actuator is defective. · Check if the actuator exit is deformed (Check if the lever part is deformed). · Check whether burrs occur in the assembly part of the exit actuator and if the actuator operates smoothly. · Check if foreign objects or paper debris are preventing the correct operation of the actuator. 2. If the paper is stuck in the fuser : disassemble the fuser and remove the jammed paper, and clean the surface of the pressure roller with dry gauze. Check all ribs, claws and springs.
2. If the paper is rolled in the Fuser Roller(accordion Jam): · This occurs when a Guide claw is broken away, damaged or deformed. · It occurs when the Spring of a Guide claw is broken or damaged. · It occurs when the Heat-Roller or Pressure-Roller is seriously contaminated with toner.
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Troubleshooting
7.2.5 Multi-Feeding
· Description Multiple sheets of paper are fed at once.
Check and Cause 1. Check that the paper size guides are set correctly (cassette and MPF tray). 2. Solenoid malfunction (the solenoid does not work properly). Perform DCU diagnostic Code 06 3. Friction Pad is contaminated.
Solution 1. Adjust paper guides.
2. Replace the solenoids or PBA as appropriate.
3. Clean the friction pad rubber with a soft cloth dampened with IPA (Isopropyl Alcohol) or water. 4. Use paper with a smother surface finish.
4. Paper has a rough surface texture.
7.2.6 Paper rolled in the Fuser
· Description Paper rolled around fuser rollers or 'Accordion' jam
Check and Cause 1. Contamination of the pressure roller or heat roller.
Solution 1. After disassembling the fuser, clean contamination from between the heat roller and the thermistor and also clean contamination from the pressure roller. Clean the surface of the rollers with IPA or water 2. Check for damage or deformation of the print claws and the holder plate claws, and repair or replace as appropriate.
2. Damaged or deformed ribs, claws or springs.
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Troubleshooting
7.2.7 Paper rolled on the OPC Drum
· Description Paper is rolled up in the OPC.
Check and Cause 1. Paper is too thin. 2. The face of paper is curled.
Solution 1. Use paper that conforms to the printer specification. 2. Ensure paper is stored properly to prevent curl. Note. To remove paper rolled in the OPC. · Remove the toner cartridge from the set, taking care not to touch the green surface. Use the gearwheel at the side to rotate the OPC drum and pull the paper from the cassette. · Clean fingerprints on the OPC gently with soft tissue, taking care not to scratch the surface.
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Troubleshooting
7.3 Printer Faults Causes and Solutions
7.3.1 All LEDs blinking (Fuser Error)
· Description 1. All the lamps on the operator panel blink. 2. The fuser drive gear breaks or melts. 3. When printing the motor skips or makes a noise due to a defective fuser drive gear Check and Cause Use DCU CODE 10 to test the fuser. 1. Thermostat, fuser power cable or heat lamp is open circuit. 2. Thermistor is faulty. 3. Drive gear melted. Solution 1. Replace heat lamp or cable harness if necessary. Replace the whole fuser assembly if the thermostat is open circuit. 2. Carefully inspect the thermistor mounting. If the mounting or the roller in this area is melted replace the whole fuser assembly. If the thermistor is faulty but there is no sign of heat damage replace the thermistor sensor. 3. Replace the fuser.
7.3.2 All LEDs blinking (Scan Error)
· Description All lamps on the OPE panel blink.
Check and Cause Use DCU CODE 05 to test the LSU. 1. LSU cable or connector faulty. 2. LSU motor is faulty. 3. Check the HSYNC signal.
Solution Replace the LSU or cable harness as required. Replace a main board if the same error persists after replacing the LSU.
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Troubleshooting
7.3.3 Fuser gear melts due to overheating causing Paper Jam.
· Description Constant Jam where paper is entering Fuser unit. Fuser rollers do not turn Check and Cause 1. Check the Heat Lamp, thermostat and thermistor. Use the DCU Diagnostic Test 10 Error codes: `60', '62', `68'. 1. Replace Fuser unit Solution
2. Replace the Main PBA as appropriate.
7.3.4 Paper Empty
· Description The Paper Empty lamp is lit even when paper is loaded in the cassette.
Check and Cause 1. Deformed paper sensor actuator or faulty sensor. 2. Main PBA is defective. Use DCU Diagnostic Test 08. 3. Faulty cables or connectors.
Solution 1. Replace the defective actuator or sensor. 2. Replace the MAIN PBA as appropriate.
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Troubleshooting
7.3.5 Paper Empty without indication
· Description The paper empty lamp does not light when the paper cassette is empty.
Check and Cause 1. Deformed paper sensor actuator or faulty sensor. 2. Main PBA is defective. Use EDC diagnostic test 08. 3. Faulty cables, connector or faulty Lamp
Solution 1. Replace the defective actuator. 2. Replace the MAIN PBA as appropriate 3. Check and replace cable harness or OPC as appropriate.
7.3.6 Cover Open
· Description The ERROR lamp is lit even when the print cover is closed.
Check and Cause 1. The 'Hook Lever' actuator may be stuck or faulty
Solution 1. Use EDC mode to check cover switch operation. Check and replace the actuator if necessary. 2. Replace the front cover. 3. Replace the Main PBA as necessary.
2. The `hook Lever' tab on the front cover may be damaged or broken 3. The sensor Switch on the main PBA may be defective.
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Troubleshooting
7.3.7 No ERROR lamp when the cover is open
· Description The ERROR lamp does not light even when the print cover is open.
Check and Cause Use EDC diagnostic code 09, Check for error code `64'. 1. The 'Hook Lever' actuator may be stuck or faulty 2. The OPE LED may be faulty. Check the connector and cables between the main PBA and the OPE panel 3. The sensor switch on the main PBA may be faulty
Solution 1. Use EDC mode to check cover switch operation. Check and replace the actuator if necessary. 2. Replace the cable or OPE Panel as necessary.
3. Replace the main PBA if necessary.
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Troubleshooting
7.3.8 Defective motor operation
· Description Main motor is faulty and paper does not feed into the printer, resulting in Jam 0'
Check and Cause Perform EDC diagnostic code 00 to test the main motor. 1. The main motor harness or Motor PCB may be faulty. 2. The main PBA may be faulty 3. SMPS may be faulty
Solution 1. Check the motor harnesses and connectors, replace if defective.. 2. If the problem persists check and replace the main PBA or SMPS as appropriate. .
7.3.9 No Power
· Description When system power is turned the lamps on the OPE panel do not come on.
Check and Cause 1. Check if the power input and SMPS output are normal.
Solution 1. Replace the power supply cord or SMPS. Check power fuse and SMPS fuses replace if necessary. 2. Check OPE connector and harness. Replace the OPE panel or cable. 3. Replace the main PBA panel.
2. Lamps do not come on but normal start up sounds are heard. 3. After replacing SMPS lamps do not come on and no start up sounds are heard.
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Troubleshooting
7.3.10 Printed Vertical Lines become curved
· Description When printing, vertical lines are not straight.
Check and Cause Use EDC diagnostic code 05 to test the LSU motor. 1. Check stability of 24V supply to LSU.
Solution 1. 24V stable - Replace LSU. 24V unstable replace SMPS, if the problem persists replace the main PBA.
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Troubleshooting
7.4 Toner Cartridge Service
Defects caused by using non Samsung Toner cartridges or unauthorized toner refills are not covered by the guarantee.
7.4.1 Precautions on Safe-keeping of Toner Cartridge
Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.
7.4.2 Service for the Life of Toner Cartridge
As the toner cartridge becomes almost empty the image may become faded or light.This can be improved by redistributing the toner (see below),to permanently resolve this problem replace the toner cartridge.
7.4.3 Redistributing Toner
When toner is low,faded or light areas may appear on a printed page.You may be able to temporarily improve the print quality by redistributing the toner.The following procedures may allow you to finish the current print job before replacing the toner cartridge.
1) Grasp the front cover and pull it toward you to open. 2) Remove the toner cartridge from the printer
3) Gently shake the toner cartridge from side to side five or six times to redistribute the toner.
Note :
If the toner gets on your clothing, wipe it off with a dry cloth and wash clothing in cold water. Hot water sets toner into fabric.
Note :
Avoid reaching too far into the printer. The fusing area may be hot. To prevent damage to the toner cartridge, do not expose it to light for more than a few minutes.
4) Reinsert the toner cartridge into the printer. Ensure that the toner cartridge snaps into place. 5) Close the front cover. Make sure that the cover is securely closed.
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Troubleshooting
7.4.4 Signs and Measures at Poor toner cartridge
Fault Light image and partially blank image (Cartridge life is ended.) Signs · The printed image is light or dirty and untidy. · Parts of the image are not printed. · Periodically a "tick tick" noise occurs. Cause & Check 1. If the image is light or dirty and untidy - Shake the toner cartridge and then recheck. OK: Lack of toner, so the life is nearly expired. 2. Some part of image is not printed - Shake the toner cartridge and then recheck. (1)NG: clean the LSU window with a cotton swab, then recheck. (2)OK: Lack of toner, so the life is nearly closed. 3. Periodically a noise like "tick tick" occurs - Measure the time between ticks. 4. White vertical stripes on the whole or part of the page : Shake the toner cartridge and then recheck. OK: Lack of toner, so the life is nearly expired Solution 1. All of 1, 2, 3 If image quality improves by shaking, replace with a new toner cartridge. Perhaps up to 100 pages left before out of toner. 2. For item 2If image quality improves after cleaning the LSU window then the toner cartridge is normal. (Contamination on the LSU window has caused image quality problems.) 3. For item 3If the time between ticks is about 2 seconds, the toner inside the toner cartridge is almost exhausted. ( Purchase and replace with a new toner cartridge. Perhaps up to 200 pages left before out of toner) 4. For item 3This is a phenomenon caused by lack of toner, so replace the toner cartridge.
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Toner Contamination
· Toner contamination of the printed page at regular intervals down the page. · Random Toner contamination over the whole or large parts of the paper surface.
1. Contamination at regular intervals. (a)Check the distance between contamination marks. (b)Check the appearance of both ends of the toner cartridge OPC drum. 2. Random page contamination. (a) Check that the terminals (contact points) of the toner cartridge and the set are clean. (b) Check that the terminals (contact points) of the toner cartridge and the set are not damaged.
1.(a) Refer to section 6.5 1.(b) If both ends of the OPC drum are contaminated with toner: Check no. of pages printed using this cartridge perhaps waste toner collector is full.
2. Clean all HV contacts. If the problem persists replace the cartridge.
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Troubleshooting
Fault White Black spot
Signs · Light or dark black dots on the image occur periodically. · White spots occur in the image periodically.
Cause & Check 1. If light or dark black dots occur at regular intervals this is because the toner cartridge rollers are contaminated with foreign substance or paper particles. (1)38mm interval : Charge roller (2)95mm interval : OPC cycle 2. If white spots occur in a black image at intervals of 95mm, or black spots occur elsewhere, the OPC drum is damaged or foreign substance is stuck to the surface. 3. If a black and white or graphic image is partially broken at irregular intervals, the transfer roller's life has been expired or the transfer voltage is abnormal.
Solution 1. For item 1 Run OPC Cleaning Mode Print 4-5 times repeatedly to remove excess toner. Especially check for foreign substances on the OPC surface Clean with a clean gauze moistened with IPA Isopropyl Alcohol) take care not to damage the OPC surface. Never use other forms of alcohol. 2. For Item 2 If running OPC Cleaning Mode Print 4-5 times does not resolve the problem : at intervals of 35.2mm - place the toner cartridge. : at intervals of 75.5mm clean OPC drum. 3. For item 3 - Change the transfer roller because the life of the transfer roller has expired. (Check the transfer voltage and readjust if necessary.)
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Recycled product
· Poor appearance of 1. Poor appearance of the toner the toner cartridge. cartridge. (a)Check for damage to label · Dirty or rough and if different materials are printouts. used. (b)Check the appearance of · Bad background in parts of the toner cartridge, the image. such as frame, hopper, screws
1. For Item 1 the cartridge is judged to be a recycled product (a) If there is any evidence of disassembling the toner cartridge. (b) If materials other than normal parts of the toner cartridge are added or substituted. 2. Clean all HV contacts. If the problem persists replace the cartridge. Note If the cartridge is judged to be recycled then these types of problems can occur when the toner cartridge is recycled over 2 times. If `nearly empty' cartridges are collected for re-use this is judged as recycling the toner cartridge.
2. Unclean and rough printouts. (a)Check that the terminals (contact point) of the toner cartridge and the set are clean. (b)Check that the terminals (contact point) of the toner cartridge and the set are not damaged.
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Troubleshooting
Fault Ghost & Image Contamination
Signs
Cause & Check
Solution 1. All of Items 1, 2, 3 (a) Clean the contacts on the toner cartridge. (b) Clean the contact points on the set. (c) If the terminal assembly is damaged repair or replace the terminals in the set or replace the cartridge 2. In Item 2 This is particularly related to problems with the charge roller contact. Pay close attention to the charge roller contacts. 3. In Item 3 This is particularly related to problems with the developer bias voltage contact. Pay close attention to the charge roller contacts.
· The printed image 1. The printed image is too light is too light or dark, or dark, or partially or partially contaminated black. contaminated black. (a) Check if foreign substance or toner are stuck to the · Totally terminals (point of contact) contaminated black. of the toner cartridge or set. (Black image (b) Check if the terminal printed out) assembly is normal. · The density of printouts is too dark and ghost occurs. 2. Totally contaminated black. (Black image printed out) (a) Check if foreign substances are stuck to the terminal (point of contact) of the toner cartridge or set. (b) Check if the terminal assembly is normal. (Especially check the charge roller terminal.) 3. The printed image is dark and ghost occurs. (a) Check if foreign substances are stuck to the terminal (point of contact) of the toner cartridge or set. (b) Check if the terminal assembly is normal. (Especially check the developer roller terminal.)
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Troubleshooting
7.5 Software Problems Causes and Solutions
7.5.1 The printer is not working (1)
· Description While Power turned on, the printer is not working in the printing mode.
Check and Cause 1. Print a Demo Page: When the Ready lamp is lit press and hold the Cancel button until the lamps flash. Release the button.
Solution 1. If the test print works that means there are no problems in the printer itself. If the test printing does not work that means the printer is faulty and the problem is not due to computer software or driver settings. 2. Replace the printer cable. If the problem is not solved even after the cable is replaced, check the amount of the remaining toner. 3. Check that the connection between PC and printer port are correcct. If you use windows, check that the printer driver in the controller is set up correctly set up, the correct port is selected and `Use On-line' is selected in the driver. If the printer driver is properly set up try printing a test page from the driver properties. Check in which program printing is not working. Try opening `Memo Pad' and printing. If the printer is not working in a certain program, adjust the setup within that program. Sometimes, the printout is normal within the Windows basic programs, but it's not working in a particular program. In this case, uninstall and reinstall the new driver. If the printer is not working in the Windows basic programs and you are printing using the parallel port check the port setting in CMOS is on ECP and that the address is IRQ 7 and 378 (for parallel port 1). Try using USB instead of parallel or vice versa. 4. If you have other devices that need to share the printer port try temporarily disconnecting these devices 9and perhaps even uninstalling their drivers) to ensure the printer works by itself. If you are using a USB hub try connecting directly to the back of the PC instead.
2. Check that the PC and the printer are properly connected and that the toner cartridge installed correctly. 3. Printing is not working in the Windows.
4. Check that the printer cable is directly connected to the printer.
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Troubleshooting
7.5.2 The printer is not working (2)
· Description After receiving the print command there is no response at all or print speed is low due to wrong setup of the environment rather than malfunction of the printer itself. Check and Cause 1. Ensure you have sufficient free hard disk space for the temporary work files created during printing. Solution 1. Not working with the message 'insufficient printer memory' means there is a hard disk space problem rather than a printer RAM problem. In this case provide more space on the hard disk. Secure more space using the disk utilities program. 2. The connection of the cable and printer port is not correct. Check that the cable is properly connected and if you are using the parallel port check that the port settings in CMOS is correct. 3. For the printer port, Select ECP. SPP and normal normal modes support 8-bit data transfer, while ECP Mode supports 12-bit data transfer. 4. If the regular font is not printing, the cable or the printer driver may be defective. Turn the PC and printer off, and reboot the system to print again. If not solved, double-click the printer in my computer If the regular fonts are not printed this time again. the cable must be defective so replace the cable with new one.
2. Printing error occurs even if there is enough space in the hard disk.
3. Check the parallel-port-related items in the CMOS Setup.
4. Reboot the system to print.
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Troubleshooting
7.5.3 Abnormal Printing
Printing does not work even after replacing the cable Printer does not work at all or strange fonts are printed,
· Description
Check and Cause 1. Set up the parallel port using CMOS SETUP.
Solution 1. Ensure that ECP (best) or SPP is selected in the CMOS (BIOS) setup. 2. Ensure that the correct driver is loaded. Use the driver supplied on the CD or downloaded from the Samsung web site. DO NOT use the Microsoft driver supplied with the Windows operating system. If the printer is a GDI or SPL type printer ensure that ALL OTHER GDI or SPL drivers are uninstalled as Windows allows only 1 of this type of driver to be loaded. 3. Delete any unnecessary files to secure enough space on the hard disk and start the print job again.
2. Printer Driver Error.
3. Error message "insufficient memory". (The printing job sometimes stops due to insufficient virtual memory, this is caused by insufficient space on the hard disk.)
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Service Manual
Troubleshooting
7.5.4 SPOOL Error
SPOOL (simultaneous peripheral operations online) is the process Windows uses to manage print jobs. Jobs are processed and then stored on the hard disk until the printer is ready to accept them
· Description
Check and Cause 1. Insufficient space on the hard disk in the directory assigned for the basic spool. 2. If previous printing errors were not solved.
Solution 1. Delete any unnecessary files to provide more space for spool storage. 2. There may be files from previous failed print jobs on the hard disk with the name in the form `*.jnl'. Delete these files and Reboot Windows to restart the printer. 3. Shut down all other programs except the current one, if possible. 4. Delete the printer driver completely and reinstall it.
3. There may be conflict with other drivers or programs.
4. When an application program or the printer driver is damaged. 5. When some files related to the OS are damaged or virus infected.
5 After rebooting the computer, check for viruses, restore the damaged files and reinstall the application program which is not working properly. 6. Add up more memory to the PC.
6. Memory is less than suggested.
How to delete the data in the spool manager. In the spool manager, the installed drivers and the list of the documents waiting to be printed are shown. Select the document to be deleted and check delete in the menu. If the job you are deleting is the current job when you delete the job data that has already been transferred to the printer's memory will still be printed. If there is a problem with the printer (out of toner, offline, out of paper etc.) the job may take a long time to delete as it must wait for a time out.
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