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Troubleshooting

7
7.1.1
Fuser
EXIT Sensor

7. Troubleshooting
7.1 Paper Feeding Problems
Wrong Print Position
Printing begins when the paper is in the wrong position.

· Description

Check and Cause A defective feed sensor actuator can cause incorrect timing.

Solution Replace the defective actuator

7.1.2 JAM 0
· Description 1. Paper has not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. Check and Cause
LSU Toner Cartridge
DR SR
Feed Sensor

Solution 1. Replace the solenoid.

CR PR OPC TR

PTL

1. Check the Solenoid by using Engine Test Mode : Diagnostic Mode code 0

FR

MP Sensor

PIC
Empty Sensor

K/R

2. Check if the pad is loose due to bad sealing of the side-pad.

2. Replace the side-pad Assembly L or R, if necessary.

3. Check the surface of the roller-pickup for foreign matter.

3. Clean with soft cloth dampened with IPA(Isopropyl Alcohol) or water.

4. If the paper feeds into the printer and Jam 0 occurs, perform DCU to check feed-sensor of the engine board.

4. Replace the Housing-Pickup and/or Shaft-Pickup.

WorkCentre PE16

Service Manual 7-1 June 2003

Troubleshooting

7.1.3

JAM 1
1. Paper is jammed in front of or inside the fuser. 2. Paper is stuck in the discharge roller and in the fuser just after passing through the ActuatorFeed. Check and Cause
LSU

· Description

Solution 1. Replace the SMPS.

Fuser
EXIT Sensor

CR PR OPC TR DR SR

Toner Cartridge

PTL

Feed Sensor

FR

MP Sensor

1. If the paper is jammed in front of or inside the fuser.

Empty Sensor

PIC

K/R

2. If the paper is stuck in the discharge roller and the fuser just after passing through the Actuator-Feed, Feed Actuator may be defective.

2. Reassemble the Actuator-Feed and Spring-Actuator.

7.1.4 JAM 2
· Description 1. Paper is jammed in front of or inside the fuser. 2. Paper is stuck in the discharge roller and in the fuser just after passing through the ActuatorFeed. Check and Cause
LSU Fuser
EXIT Sensor

Solution 1. Check if the exit sensor actuator is defective. · Check if the actuator exit is distorted (Check if the lever part is distorted). Replace Actuator Exit. · Check whether burrs occur on the assembly part of the actuator exit and if the actuator operates smoothly. Replace Actuator Exit. · Check if foreign matters and wire are interfering with the operation of the actuator exit's. 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.

CR PR OPC TR DR SR

Toner Cartridge

PTL

Feed Sensor

FR

MP Sensor

PIC
Empty Sensor

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, actuator Exit should return to the original position to shut off the photo-sensor. Sometimes it takes longer than it should and does not return.

K/R

2. If the paper is rolled in the Fuser Roller: · This occurs when a Guide claw is broken away or distorted. · It occurs when the Heat-Roller or Pressure-Roller is seriously contaminated with the toner. · It occurs when the Heat-Roller or Pressure-Roller is seriously contaminated with toner.

3. Concertina paper jam in the fuser.

3. Remove the jammed paper after disassembling the fuser : Clean the surface of the pressure roller with dry gauze. · Remove the toner particles stained on the rib. · Check the assembly and performance of the exit.

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Troubleshooting

7.1.5 Multi-Feeding
· Description Multiple sheets of paper are fed at once.

Check and Cause 1. Solenoid malfunction(the solenoid does not work properly): Perform Engine Test Mode : Diagnostic Mode code 0. 2. Friction-Pad is contaminated with foreign matter.(oil..)

Solution 1. Replace the solenoid if necessary.

2. Clean the friction-pad with soft cloth dampened with IPA(Isopropyl Alcohol). 3. Remove curled paper.

3. Paper is curled.

7.1.6 Paper rolled in the fuser
· Description If contaminated at intervals of 57mm on the back of a paper.

Check and Cause 1. Contamination of the pressure roller. (Background, Hot off set)

Solution 1. Disassemble the fuser, clean the area between the Heat-roller and Thermistor and remove the foreign matter off of the pressure roller. 2. If background appears badly in the printing, fix it by referring to the solutions for background. (See 7.3.8 Background)

WorkCentre PE16

Service Manual 7-3 June 2003

Troubleshooting

7.1.7 Paper rolled in the OPC
· Description Paper is rolled up in the OPC.

Check and Cause 1. Paper is out of specification. 2. Paper is curled.

Solution 1. Use recommend paper. 2. How to remove the rolled paper in the OPC. · Remove the paper while turning the OPC against the ongoing direction. · Clean fingerprints on the OPC softly with soft cloth dampened with IPA(Isopropyl Alcohol) or tissue.

7.1.8 Defective ADF
· Description ADF (Automatic document Feeder) is not properly operated.

Check and Cause 1. Check if ADF rubber and HOLDER rubber are damaged. 2. Check if the document sensors of ADF Ass'y (3 paper sensors) are normal.

Solution 1. Replace the contaminated or damaged part. 2. Replace the ADF ASS'Y.

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Troubleshooting

7.2. Printing Problems (malfunction)
7.2.1 Defective Operation (LCD WINDOW
· Description

) Display

Strange characters are displayed on the OPE Panel and buttons are not operated.

Check and Cause 1. Clear the memory.(see page 6.5.3) 2. Check if OPE HARNESS is connected to the Connection B'd correctly.

Solution 1. Try again after clearing the memory. 2. After confirming that OPE HARNESS is connected to the Connection B'd correctly, if it is so, then replace the OPE Ass'y and Main Board in sequence.

7.2.2 Defective LCD Operation
· Description

Defective LCD Operation
Check and Cause Solution 1. Disassemble and reassemble the OPE ASS'y. Replace defective part. 2. Replace the OPE ASS'Y and the Main PBA in sequence.

1. Clear the memory. (See page 6.4.3). 2. Confirm you can hear a click sound, while pressing a key on the OPE panel.

WorkCentre PE16

Service Manual 7-5 June 2003

Troubleshooting

7.2.3 Not functioning of the fuser gear due to melting away
· Description The fuser gear melts and breaks.

Check and Cause 1. Check the Heat Lamp. 1. Replace the Fuser.

Solution

2. Replace the Main PBA. 3. Replace the SMPS.

7.2.4 Paper Empty
· Description The paper lamp on the operator panel is on even when paper is loaded in the cassette.

Check and Cause 1. Bending or deformation of the actuator of the paper sensor. 2. The function of the Main PBA is defective Perform Engine Test Mode : Perform Engine Test Mode diagnostic code 2.

Solution 1. Replace the defective actuator.

2. Replace the Main PBA.

7.2.5 Paper Empty without indication
· Description The paper lamp on the operator panel does not come on when the paper cassette is empty.

Check and Cause 1. Bending or deformation of the actuator of the paper sensor. 2. The function of the Main PBA is defective Perform.

Solution 1. Replace the defective actuator.

2. Replace the Main PBA.

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Troubleshooting

7.2.6 Door Open
· Description The ERROR lamp is on even when the print Door is closed.

Check and Cause 1. The hook lever in the Front Cover may be defective.

Solution 1. Replace the hook lever, if defective.

2. Check the Connector(CN1) and Circuit of the Cover Switch department in the Main PBA.

2. Check the insertion of the Door Open S/W Connect.

3. Replace the Main PBA or Door Open S/W.

7.2.7 No lamp on when the Door is open
· Description The ERROR lamp does not come on even when the printer Door is open.

Check and Cause Check the Connector(CN1) and Circuit of the Cover Switch department in the Main PBA.

Solution 1. Check the insertion of the Door S/W Connect.

2. Replace the Main PBA or Door Open S/W.

WorkCentre PE16

Service Manual 7-7 June 2003

Troubleshooting

7.2.8 Defective Motor operation
· Description Main Motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'.

Check and Cause 1. Motor harness or sub PCB may be defective.

Solution 1. Check the Motor harness, replace it, if defective.

2. Perform Engine Test Mode diagnostic code 0 and Check the Motor operation.

2. Replace the SMPS, if necessary.

7.2.9 No Power
· Description When system power is turned on, all lamps on the operator 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.

2. Check inside the LED-Panel on the front-cover, if the LED-Panel does not appear after normal warming-up.

2. Replace the control board.

3. Replace the LED-panel.

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Troubleshooting

7.2.10 Vertical Line Getting Curved
· Description When printing, vertical line gets curved.

Check and Cause 1. If the supply of +24v is unstable in the Main Control board linking with LSU, check drive by Engine Test Mode : Diagnostic Code 1 LSU Motor on. 1. Replace LSU.

Solution

2. Replace the Main Control board.

WorkCentre PE16

Service Manual 7-9 June 2003

Troubleshooting

7.3 Printing Quality Problems
7.3.1 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 Solution 1. If causes 1 and 2 occur in the developer cartridge, replace the developer and try to print out.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Damaged develop roller in the Developer. Deformed Doctor-blade or cleaningblade.

2. Scratched surface of the discharge roller in the developer. 3. Partial depression or deformation on the surface of the transfer roller.

2. Replace the transfer roller if occurred as No. 3.

7.3.2 Vertical White Line
· Description White vertical voids in the image.

Check and Cause

Solution 1. Foreign matter stuck onto the window : Clean the LSU window with recommended cleaner(IPA) Clean the window with a clean cotton swab. 2. Foreign matter in the LSU : Open the cover of LSU and clean with a cotton swab on the surface of the reflex mirror.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Foreign matter stuck onto the window of internal lenses of LSU mirror.

2. Foreign matter or toner particles between the developer roller and blade. (In case the life of the developer has been expired, white lines or light image occur in front of the image.) 3. It may occur when a Burr and foreign substances are on the window of the developer frame. 4. If the fuser is defective, voids occur periodically at the top of a black image.

3. No 3. : Remove the foreign matter and burr of the exposure window. (Developer cartridge) 4. No. 4. : Open the front cover and check that the ribs corresponds to the position of the lines. 5. If the problems are not solved, replace the developer cartridge.

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Troubleshooting

7.3.3 Horizontal Black Band
· Description 1. Dark or blurry horizontal stripes occur in the printing periodically. (They may not occur periodically.) Check and Cause Solution 1. Clean each voltage terminal of the Charge, Supply, Develop and Transfer roller. (remove the toner particles and paper particles) 2. Measure the interval of the black bands, refer to the measurements shown opposite and clean the appropriate gear in the OPC.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Bad contacts of the voltage terminals to developer.

2. The rollers of developer may be stained. Charge roller = 37.7 mm Supply roller = 37 mm Develop roller = 35.3 mm Transfer roller = 45.3 mm

3. If the malfunction persists, replace the developer.

7.3.4 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 matte 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. 3. If a black image is partially broken, the transfer voltage is abnormal or the transfer roller's life has expired. Solution 1. Run OPC cleaning Mode Print and run the Self-test 2 or 3 times.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

2. In case of 75.5 mm interval unremovable in 1, cleanly remove foreign substances stuck on the OPC location equivalent to black spots and white spots with a dry duster. 3. The transfer roller guarantees 60,000 sheets printing. If the roller's life is expired, replace it. 4. In case of 37.7 mm interval unremovable in 1, take measures as to replace the developer cartridge and try to print out. 5. Clean paper particles and foreign matter from the inside of the machine.

WorkCentre PE16

Service Manual 7-11 June 2003

Troubleshooting

7.3.5 Light Image
· Description The printed image is light, with no ghost.

Check and Cause

Solution 1. Check if the Toner Save Mode is off.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Develop roller is stained when the toner of developer cartridge is almost consumed. 2. Ambient temperature is below than 10°C.

2. No 1 : Replace the developer cartridge and try to print out. 3. No 2 : Wait 30 minutes after printer is powered on before you start printing.

3. Bad contact caused by the toner stains between the high voltage terminal in the HVPS and the one in the set. 4. Abnormal output from the HVPS. (Run self-test and check 1~4)

4. No3 : Clean up the contaminated area by the toner.

5. Replace the HVPS if the problems are not solved by the above four directions.

7.3.6 Dark Image or a Black
· Description The printed image is dark.

Check and Cause

Solution 1. Clean the high voltage charge terminal.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. No charge voltage in the Main PBA. ( Perform Engine Test Mode : Diagnostic code 4 HVPS check.) 2. Charge voltage is not turned on due to the bad contacts between power supply in the side of the Developer and charge terminal of HVPS.

2. Check the state of the connector which connects the engine board and HVPS.

3. If steps 1 and 2 above did not correct the problem, replace the HVPS .

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Troubleshooting

7.3.7 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 holder is damaged. 2. The life of the Toner Unit has expired.

Solution 1. Replace both the left and right Spring Holder.

2. Problem with the toner cartridge, replace the toner cartridge and try to print out.

3. The toner level is not even on the developer roller due to the bad blade.

7.3.8 Background
· Description Background appears in whole area of the printing.

Check and Cause

Solution 1. Quality is not guaranteed when using recycled paper. 2. Replace the toner cartridge.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Recycled recording paper has been used. 2. The life of the Developer has expired.

3. The vertical movement of the transfer roller is too great? 4. The HVPS is normal? (Perform Engine Test Mode diagnostic code 4)

3. Clean the bush part of the transfer roller.

4. Replace the HVPS.

WorkCentre PE16

Service Manual 7-13 June 2003

Troubleshooting

7.3.9 Ghost (1)
· Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

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 Unit.. 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 Unit has expired.

Solution 1. Clean the contaminated terminals.

75.5 mm

2. Problem in the toner cartridge, replace the toner cartridge and try to print out.

3. Replace the engine board if not solved by the above directions 1-2.

4. Transfer roller lifetime(60,000 sheets) has expired.

4. If not solved by the direction 3, check the transfer roller lifetime and replace it.

5. Abnormal low temperature(below 10°C).

5. Wait about 30 minutes after power on before using printer. 6. Problem in the toner cartridge, replace the toner cartridge and try to print out.

6. Damaged cleaning blade in the Toner Unit.

7.3.10 Ghost (2)
· Description Ghost occurs at 75 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, higher transfer voltage is required.
75 mm

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

Solution Select 'Thick Mode' on paper type menu from the software application and after use, we recommend returning to the original Mode.

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Troubleshooting

7.3.11 Ghost (3)
· Description White ghost occurs in the black image printing at 32 mm intervals.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

Check and Cause 1. The life of Toner Unit has expired.
32 mm

Solution 1. Problem in the toner cartridge, replace the toner cartridge and try to print out. 2. Replace the SMPS PBA.

2. The abnormal voltage and bad contact of the terminal of the supply roller

7.3.12 Ghost (4)
· Description Ghost occurs at 47 mm intervals.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

Check and Cause The temperature of the fuser is maintained high.
47 mm

Solution 1. Disassemble the fuser and remove the contaminated toner particles on the roller and clean the foreign matter between Thermistor and Heat roller. ( Caution: can be deformed)

7.3.13 Stains on the front of the page
· Description The background on the face of the printed page is stained.

Check and Cause

Solution 1. Replace the toner cartridge.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

1. Toner leakage due to improperly sealed developer. 2. If the transfer roller is contaminated, stains will occur on the front of the page.

2. If the transfer roller is contaminated, run PC Cleaning Mode Print 2 or 3 times. And perform Self-Test 2 or 3 times to remove contamination. Replace the Transfer Roller..

WorkCentre PE16

Service Manual 7-15 June 2003

Troubleshooting

7.3.14 Stains on back of the page
· Description The back of the page is stained at 56.1 mm intervals.

Digital Digital Pri Digital Printer Digital Printer Digital Printer

Check and Cause 1. Transfer roller is contaminated.

Solution 1. Perform the OPC Cleaning Mode Print 2 or 3 times. Run Self-Test to remove the contamination of the transfer roller. 2. Replace the transfer roller if contaminated severely. 3. Disassemble the fuser and clean the H/R(Heat Roller) and P/R(Pressure roller). Check the area between H/R and Thermistor. If contaminated, clean the area. Replace the contaminated part.

2. Pressure roller is contaminated.

7.3.15 Blank Page Print out (1)
· Description Blank page is printed.

Check and Cause

Solution Remove contamination of the terminals of the toner cartridge and the printer.

Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer

Bad ground contacts in OPC and/or developer.

7.3.16 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 developer. 2. Solenoid not working correctly. Solution 1. Remove contamination of the terminals of the toner cartridge. 2. Perform the engine self test using Engine Test Mode diagnostic Mode code 0 if the Solenoid is normal. 3. If not solved by the above directions 1-2, Replace the engine board. 4. Turn the power off, clear the print job on the computer, and try printing again.

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Troubleshooting

7.4 Fax & Phone Problems
7.4.1 No Dial Tone
· Description While on-hook button is pressed, there is no dial tone. Check and Cause 1. Check if the telephone line cord is connected to TEL LINE correctly. 2. Check if it makes CLICK sound while OHD key is pressed. 3. Check the connection of HARNESS between the LIU and the Main PBA. 4. Check if the SPEAKER is connected correctly. Solution 1. If the telephone cord is normal but there is no dial tone, connect a phone to check for a dial tone, if no dial tone, replace the LIU PBA. 2. If you cannot hear the OHD CLICK sound, the OPE ASS'Y may be defective. Replace the OPE ASS'Y. 3. Check the connection of Speaker, and replace it. 4. Lastly, try to replace the Main PBA.

7.4.2 Defective MF DIAL
· Description The MF DIAL is not functioning. Check and Cause 1. Check if the telephone line is connected correctly. 2. While the BUTTON KEY is pressed, check for a CLICK sound. 3. Check the connection of HARNESS between the LIU and the Main PBA. Solution 1. If you cannot hear the OHD CLICK sound, the OPE ASS'Y may be defective. Replace the OPE ASS'Y. 2. If you can hear a CLICK sound, after checking the connection of HARNESS between the LIU and the Main PBA, replace the HARNESS. 3. The problem still persists, then replace the LIU and the main PBA in sequence.

Notes:
Product supports the MF DIAL type only.

WorkCentre PE16

Service Manual 7-17 June 2003

Troubleshooting

7.4.3 Defective FAX SEND/RECEIVE
· Description The FAX SEND/RECEIVE is not functioning. Check and Cause 1. Check if you can catch a dial tone by pressing OHD. 2. Check if you can hear a RECEIVE tone while MODEM testing in the TECH mode. Solution 1. If the MODEM testing is normal and there is no dial tone, replace the LIU PBA. 2. If the MODEM testing is not normal, replace the Main PBA.

7.4.4 Defective FAX SEND
· Description RECEIVE is functioning, but SEND is not functioning or the received data are broken. Check and Cause 1. Check if there is NOISE when pressing on-hook dial. 2. Check the RECEIVE condition by trying to send a FAX to another fax machine from the sending FAX. Solution 1. If NOISE is present while on-hooking, replace the telephone line cord.

3. Check if the telephone line is connected to the product. Check if it has excessive noise.

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Troubleshooting

7.4.5 Defective FAX RECEIVE (1)
· Description SEND is functioning, but RECEIVE is not functioning or the received data are broken. Check and Cause 1. Check if there is NOISE when pressing on-hook dial. 2. Check the RECEIVE condition by receive a FAX at another fax machine. Solution 1. If NOISE is present while on-hooking, replace the telephone line cord.

7.4.6 Defective FAX RECEIVE (2)
· Description The received data are lengthened or cut in the printing. Check and Cause 1. Check if there is NOISE when pressing on-hook dial. 2. Ask to the sending side, to check the image quality of a FAX received from another machine. Solution 1. If NOISE is present, replace the telephone line cord. (Refer to `Defective FAX RECEIVE'.) 2. Check if the FAX status of the sending side is normal.

7.4.7 Defective FAX RECEIVE (3)
· Description The phone is ringing continuously, but it cannot receive.

Check and Cause Check if the RECEIVE Mode is TEL MODE or FAX MODE.

Solution After the RECEIVE mode is changed to FAX MODE, if it cannot receive, replace the LIU PBA and the Main PBA in sequence.

WorkCentre PE16

Service Manual 7-19 June 2003

Troubleshooting

7.4.8 Defective FAX RECEIVE (4)
· Description The received data is reduced by more than 50% in the printing. Check and Cause Check the FAX status of the sending side. Solution After checking the data of the forwarding side, correct the FAX of the forwarding side.

7.4.9 Defective Automatic Receiving
· Description The automatic receiving function is not working.

Check and Cause 1. Check if the RECEIVE Mode is TEL MODE or FAX MODE.

Solution 1. If the RECEIVE Mode is set to the TEL MODE, reset it to the FAX MODE. 2. After the RECEIVE mode is changed to FAX MODE, if it cannot receive, replace the LIU PBA and the Main PBA in sequence.

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Troubleshooting

7.5 Copy Problems
7.5.1 White Copy
· Description Blank page is printed out when copy. Check and Cause 1. Check the Scan-Cover open. 2. Check shading profile. 3. Check white/black reference voltage in the Main PBA. Solution 1. Exposure to direct light for more than a few minutes can cause blank images if it touches the drum. 2. Remake shading profile in the tech mode. 3. Replace U60 in the Main PBA if it is defective. · U60-154 = 0.5V · U60-155 = 3.3V

7.5.2 Black Copy
· Description Black page is printed out when Copy.

Check and Cause 1. Check the CCD problem in Main PBA. 2. Check shading profile.

Solution 1. Check the CCD harness contact. 2. Remake shading profile in the tech mode.

WorkCentre PE16

Service Manual 7-21 June 2003

Troubleshooting

7.5.3 Abnormal noise
· Description There is noise when copy. Check and Cause 1. Check the Scanner Motor and any mechanical disturbance. 2. Check the Motor Driver in Driver PBA. Solution 1.Check the right position of the Scanner Motor, and check any mechanical disturbance in the CCD carriage part. 2. If any driver is defective, replace it. · Connection PBA U4-1, 19 or U5-1, 19=0V to 24V swing signal when operating.

7.5.4 Defective Image Quality
· Description The copied image is light or bad. Check and Cause 1. Check shading profile. 2. Check the gap between original and scanner glass. 3. Check printing quality. Solution 1. Remake shading profile in the tech mode. 2. The gap above 0.5 mm can cause a blurred image.

3. See "Print" troubleshooting.

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Troubleshooting

7.6 Scanning Problems
7.6.1 Defective PC Scan
· Description The PC Scan is not functioning at all. Check and Cause 1. Check the Cable (USB or Parallel) 2. Check if the driver is installed properly. Solution 1. If the PC and the cable are not connected properly, reconnect it. 2. After confirming that it is proper by performing a PC printing test related to driver setup, if it is not so, reinstall it. (Refer to User's Manual.) 3. If copy function works, replace the Main PBA. If copy function doesn't work, replace the CCD Ass'y and try again.

3. Check if copy function operates normally.

7.6.2 Defective Image Quality of PC Scan
· Description The image PC scanned is not clear or bad. Check and Cause 1. Check the waveform form by performing a CCD test in TECH Mode. 2. Check if the resolution is set too low in PC Scan options. (Refer to User's Manual.) Solution 1. If the CCD waveform form is abnormal, try to replace the CCD Ass'y. 2. If the resolution is set to low, refer the user to the User Guide.

WorkCentre PE16

Service Manual 7-23 June 2003

Troubleshooting

7.7 Toner Cartridge Service
This product should only be used with Xerox Toner Cartridge's specified in this document and the User Guide.

7.7.1 Precautions on Safe-keeping of Toner Cartridge
Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.

7.7.2 Service for the Life of Toner Cartridge
If the printed image is light due to the life of the toner, you can temporarily improve the print quality by redistributing the toner(Shake the toner cartridge), however, you should replace the toner cartridge to solve the problem thoroughly.

7.7.2.1 Redistributing Toner
When the toner cartridge is near the end of its life, white streaks or light print occurs. The LCD displays the warning message, "Toner Low." You can temporarily reestablish the print quality by redistributing the remaining toner in the cartridge. 1. Open the Front Cover. 3. Unpack the new toner cartridge and gently shake it horizontally four or five times to distribute the toner evenly inside the cartridge.

2. Lightly pushing the used cartridge down, pull it out.

4. Save the box and the cover for shipping. Slide the new toner cartridge in until it locks into place.

Note : Help the environment by recycling your used toner cartridge. Refer to the recycling brochure packed with the toner cartridge for details.

5. Close the front cover.

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Troubleshooting

7.7.3 Signs and Measures at Poor toner cartridge
Fault Light image and partially blank image (The life is ended.) Signs · The printed image is light or unclean and untidy. · Some part of the image is not printed. Cause & Check 1. If the image is light or unclean and untidy printed image Shake the toner cartridge and then recheck. · Replace the Toner Cartridge Solution 1. All of 1, 2, 3 above(1) If it become better by shaking, replace with a new toner cartridge after 50-100 sheets in the closing state of the life span. 2. In case of 2- If it becomes better after cleaning the LSU window, then the toner cartridge is normal. (Because of foreign substance on the LSU window, the image has not been printed partly.) 3. In case of 3If the cycle of noise is about 2 seconds, the toner inside the toner cartridge has been nearly exhausted.( Purchase and replace with a new toner cartridge after using about 200 sheets at the point of occurrence) 4. In case of 3This is a condition is caused by lack of toner, so replace with a new toner cartridge.

2. Some part of image is not printed - Shake the toner car· Periodically a noise tridge and then recheck. as "tick tick" occurs. · NG : Clean the LSU window with a cotton swab, then recheck. · Replace the Toner Cartridge. 3. Periodically a noise as "tick tick" occurs - Measure the cycle.

4. White vertical stripes on the whole screen or partly.

Toner Contamination

· Toner is fallen on the papers periodically. · Contaminated with toner on prints partly or over the whole surface.

1. Toner is fallen on the paper periodically. (1)Check the cycle of the falling of the toner. (2)Check the appearance of both ends of the toner cartridge. 2.The center of the printed matter is contaminated with toner. (1)Check whether foreign substances or toner are stuck to the terminal (contact point) of the toner cartridge. (2)Check whether the state of the terminal assembly is normal.

1. If both ends of the OPC drum are contaminated with toner: Try to remove the contamination with a soft cloth.

2. Replace the toner cartridge.

WorkCentre PE16

Service Manual 7-25 June 2003

Troubleshooting

Fault White Black spot

Signs · Light or dark black dots on the image occur periodically.

Cause & Check

Solution 1. In case of 1 above Run OPC Cleaning Mode Print 4-5 times repeatedly to remove. Especially check foreign substance on the OPC surface, then remove them with a clean gauze moistened with IPA(Isopropyl Alcohol) not to damage OPC if necessary. 2. In case of 2 If they are not disappeared by running OPC Cleaning Mode Print 4-5 times. : at intervals of 37mm Replace the toner cartridge. : at intervals of 75.5 mm Remove foreign substance. : Broken image Replace the toner cartridge. 3. In case of 3 Exchange the transfer roller because the life of the transfer roller in use has been expired. (Exchange the SMPS PBA)

1. If light or dark periodical black dots occur, this is because the developer rollers are contaminated with foreign substance or paper particles. · White spots occur in the image period- (1) 37.7 mm interval : Charged roller ically. (2) 75.5 mm interval : OPC cycle

2. If white spots occur in a black image at intervals of 75mm, 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.

7-26

Service Manual June 2003

WorkCentre PE16

Troubleshooting

Fault Ghost & Image Contamination

Signs · The printed image is too light or dark, or partially contaminated black. · Totally contaminated black. (Black image printed out)

Cause & Check 1. The printed image is too light or dark, or partially contaminated black. (1) Check whether foreign substance or toner are stuck to the terminal (contact point) of the toner cartridge. (2) Check whether the terminal assembly is normal.

Solution 1. All of 1, 2, 3 above (1) Remove toner and foreign substances adhered to the contact point of the developer. (2) The contact point of the unit facing that of the developer also must be cleaned. (3) If the terminal assembly is unsafe: Replace the broken part.

· The density of printouts is too dark and ghost occurs. 2. Totally contaminated black. (Black image printed out) (1)Check whether foreign substances are stuck to the terminal(point of contact) of the developer and the state of assembly. (Especially check the charged roller terminal.)

2. In case of 2 It is a condition, when the OPC drum of the toner cartridge is not electrically charged.

3. The printed image is dark and ghost occurs. (1)Check foreign substance attached to the terminal (point of contact) of the developer and the state of assembly. (Especially check the developing roller terminal.)

3. In case of 3 It is a phenomenon as the developing bias voltage of the developer. Clean the terminals of the developing roller, then recheck it.

WorkCentre PE16

Service Manual 7-27 June 2003