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Troubleshooting
4. Maintenance & Troubleshooting
This chapter covers product maintenance, problem diagnosis and troubleshooting. It includes instructions for diagnosing and resolving print quality problems. This service manual covers both the SCX5315F and SCX5115 models. SCX5115 has printer, copier and scanner functions. The SCX5315F has all of the features of the SCX5115 and in addition has Fax capabilities. The manual contents are primarily written for the SCX5315F, where there are differences between the two models this is highlighted.
4-1 Preventative Maintenance
The cycle period outlined below is a general guideline for maintenance. The example list is for an average usage of 50 transmitted and received documents per day. Environmental conditions and actual use will vary these factors. The cycle period given below is for reference only.
COMPONENT ADF Rubber ADF Roller Pick-up Roller Transfer Roller Fuser Toner Cartridge Drum Cartridge
REPLACEMENT CYCLE 20,000 Pages 50,000 Pages 75,000 Pages 75,000 Pages 75,000 Pages 6,000 Pages 15,000 Pages
Samsung Electronics
4-1
Troubleshooting
4-2 Error Messages
Error Message RETRY REDIAL? Description The machine is waiting for the programmed interval to automatically redial. A problem with FAX communications has occurred. Loaded document has Jammed in the scanner document feeder The side cover is not securely latched Solution You can press START to immediately redial, or STOP to cancel the redial operation. Try again. Clear the document Jam.
COMM. ERROR DOCUMENT JAM
DOOR OPEN
The side door and front door must be closed in the correct order. Open both doors. Close the front door first then close the side door. Try again, check location for group.
GROUP NOT AVAILABLE
You have tried to select a group location where only a single location number can be used, such as when adding locations for a multi-dial operation. Your unit cannot connect with the remote machine, or has lost contact because of a problem on the phone line. You have attempted to set up a sending operation with no document loaded. The memory has become full.
LINE ERROR
Usually caused by a telephone line problem. Try again. If failure persists, wait an hour or so for the line to clear then try again Load a document and try again. Either delete unnecessary documents, or retransmit after more memory becomes available, or split the transmission into more than one operation. Try again. Make sure the remote machine is OK. Dial the number manually with the keypad, or assign the number. Re-load the paper cassette. Your unit will automatically return to the standby mode when it cools down to normal operating temperature. If failure persists, call service. Press STOP and clear the jam.
LOAD DOCUMENT MEMORY FULL
NO ANSWER NO. NOT ASSIGNED NO PAPER [ADD PAPER] OVERHEAT
The remote machine was not answered after all the redial attempts. The speed dial location you tried to use has no number assigned to it. There is no paper in the paper cassette. Printing stops until paper is loaded. The printer part has overheated.
PAPER JAM 0 OPEN/CLOSE DOOR PAPER JAM 1/2 OPEN/CLOSE DOOR TONER LOW
Recording paper has jammed in paper feeding area. Recording paper is jammed in pick-up unit Recording paper has jammed inside the unit. Recording paper has jammed in paper exit unit. Toner cartridge is almost empty, or toner particles in the cartridge are unevenly distributed in the cartridge Toner cartridge is now empty
Clear the jam. Remove the toner cartridge and gently rock it from side to side. Try again. If problem persists replace the cartridge. Replace the Toner Cartridge.
TONER EMPTY
4-2
Samsung Electronics
Troubleshooting
Error Message DRUM WARNING
Description A warning that the OPC drum has almost reached the end of its life (14,000 Sides) OPC drum is now life-expired (15,000 sides) When the machine detects that the toner cartridge has not been installed. Paper feed problem from the BYPASS (Manual feed) Tray. Paper feed problem in the duplex return path
Solution You have 1000 pages of print life left in the OPC Drum. Continue to use, order a new OPC drum. Replace the OPC Drum Cartridge. Install the Cartridge. Open the side Cover and clear the jam. Release Output Feed lever and check output area clear. Also open side door and check duplex unit is clear. Try again. Check thermostat, thermistor, fuser lamp and fuser connector and associated wiring. Also check the `Fuser On' signal from main PWA to Power Supply. Check cable from Main PWA to Power Supply Check thermister contact point & Heating Lamp. Check transit lock, check scanner cables are connected, check scanner home sensor, scanner motor or drive belt.
REPLACE DRUM NO CARTRIDGE BYPASS JAM DUPLEX JAM
LINE BUSY OPEN HEAT EROR
The remote FAX didn't answer No power to the Fuser lamp
Heating Error Scanner Locked
During operation, Temperature does not go up Scanner head does not move.
Samsung Electronics
4-3
Troubleshooting
4-3 User Mode
The table below shows the settings and functions available in the User Mode. These are described in the user Guide. The table is given here to indicate possible settings that the user may have changed.
4-3-1 SCX-5315F
non SYSTEM DATA m CASSETTE PAPER BYPASS PAPER MESSAGE CONF. AUTO JOURNAL RECEIVE CODE POWER SAVE ECM MODE RX REDUCTION DISCARD SIZE REDIAL INTERVAL REDIALS ANSWER ON RING SEND FROM MEMORY LOCAL ID CLOCK MODE SYSTEM ID DATE & TIME SYSTEM SETUP PREFIX DIAL NO. SECURE RECEIVE RINGER VOLUME ALARM SOUND KEY SOUND SPEAKER CONTROL SELECT LANGUAGE USB MODE FAX DUPLEX IMAGE QUALITY SCAN SLEEP MODE HOME SET MEMORY CLEAR SYSTEM ID SYSTEM DATA PHONE BOOK / MEMORY TX-RX JOURNAL DELAY TX MEMORY TX PRIORITY TX POLLING ADD/CANCEL GROUP DIAL ADD / CANCEL LOW / HIGH (10 STEPS) ON / OFF ON / OFF COM / ON /OFF ENG/GER/FRE/ITA/SPA/POR/DUT FAST / SLOW OFF / LONG EDGE / SHORT EDGE NORMAL / TEXT / IMAGE FAX / ID onn LETTER / A4 / LEGAL LETTER / A4 / LEGAL ON / OFF / ERROR ON / OFF 0-9 ON / OFF ON / OFF ON / OFF 0-30mm 1-15 1-13 1-7 ON / OFF ON / OFF 12 / 24 HOUR
4-4
Samsung Electronics
Troubleshooting
non MAINTENANCE
m CLEAN DRUM NEW DRUM NOTIFY TONER LOW ON / OFF
onn
TX CONFIRM SCHEDULE JOB PHONE BOOK SYSTEM LIST TX JOURNAL RX JOURNAL HELP LIST HELP LIST
4-3-2 SCX-5115
non SYSTEM DATA m CASSETTE PAPER BYPASS PAPER POWER SAVE SELECT LANGUAGE USB MODE HELP LIST MAINTENANCE REPORTS HELP LIST CLEAN DRUM NEW DRUM SYSTEM DATA HELP LIST HELP LIST onn LETTER / A4 / LEGAL LETTER / A4 / LEGAL ON / OFF ENG/GER/FRE/ITA/SPA/POR/DUT FAST / SLOW PRINTOUT
4-4 Tech Mode
4-4-1 How to Enter Service Mode
In service mode (tech) mode, the technician can check the machine and perform various tests to isolate the cause of a malfunction. To enter the Tech mode, press MENU, #, 1, 9, 3, 4 in sequence, and the LCD briefly displays `T' or `TECH', the machine has entered service (tech) mode. While in Tech mode, the machine still performs all normal operations. To return to normal user mode, press MENU, #, 1, 9, 3, 4 in sequence again, or turn the power off, then on by unplugging and plugging the power cord. Options changed while in service mode remain in effect until they are changed again or until you clear the machine's memory.
Samsung Electronics
4-5
Troubleshooting
4-4-2 Setting-up System in Tech Mode
4-4-2-1 SCX-5315F(SETUP : #, 1, 9, 3, 4)
non SYSTEM DATA m DIAL MODE MODEM SPEED ERROR RATE SET TX LEVEL SILENCE TIME SYSTEM ID DATE & TIME SYSTEM SETUP MEMORY CLEAR DELAY TX MEMORY TX PRIORITY TX POLLING ADD/CANCEL GROUP DIAL MAINTENANCE The same as User Mode The same as User Mode The same as User Mode CLEAR ALL MEMORY The same as User Mode The same as User Mode The same as User Mode The same as User Mode The same as User Mode The same as User Mode CLEAN DRUM NEW DRUM NOTIFY TONER LOW SWITCH TEST MODEM TEST SRAM TEST DRAM TEST ROM TEST PATTERN TEST CLEAR COUNT FLASH / ENGINE PATTERN1-7, QAPATTERN1-4, ALL"1-7 , ALL" PASSWORD (1934) CRU PRINTS COUNT FLT SCAN COUNT ADF SCAN COUNT USED DRUM COUNT USED TONER COUNT TOTAL PAGE COUNT ANSWER ON CNG ADJUST SHADING FLASH UPGRADE LOCAL REMOTE : USER PROGRAM , EMULATION ,BOOT PROGRAM PROGRAM DIAL TX CONFIRM SCHEDULE JOB PHONE BOOK SYSTEM LIST TX JOURNAL RX JOURNAL The same as User Mode The same as User Mode The same as User Mode USER MODE The same as User Mode The same as User Mode 1-4 ON / OFF 5% /10% 09-15 12 / NU / OFF TONE / PULSE onn
4-6
Samsung Electronics
Troubleshooting
non REPORTS
m MSG. CONFIRM SCHEDULE JOB PHONE BOOK SYSTEM DATA TRANSMISSION RECEPTION HELP LIST PROTOCOL ERROR CODE
onn
4-4-2-2 SCX-5115(SETUP : #, 1, 9, 3, 4)
non SYSTEM DATA m CASSETTE PAPER BYPASS PAPER POWER SAVE SELECT LANGUAGE USB MODE MAINTENANCE CLEAN DRUM MODEM TEST NEW DRUM SWITCH TEST SRAM TEST DRAM TEST ROM TEST PATTERN TEST CLEAR COUNT FLASH / ENGINE PATTERN1-7, QAPATTERN1-4 , ALL PASSWORD CRU PRINTS COUNT FLT SCAN COUNT ADF SCAN COUNT USED DRUM COUNT USED TONER COUNT TOTAL PAGE COUNT ADJUST SHADING FLASH UPGRADE REPORTS SYSTEM DATA HELP LIST ERROR CODE HELP LIST onn LETTER / A4 / LEGAL LETTER / A4 / LEGAL ON / OFF ENG/GER/FRE/ITA/SPA/POR/DUT FAST / SLOW
Samsung Electronics
4-7
Troubleshooting
4-4-3 SYSTEM DATA
DIALING MODE
Select the dialing mode according to the user's line status. TONE: Electrical type of dial PULSE: Mechanical type of dial
SILENCE TIME
In ANS/FAX mode, after a call is picked up by the answering machine, the machine monitors the line. If a period of silence is detected on the line at any time, the call will be treated as a fax message and the machine begins receiving. Silence detection time is selectable between limited (about 12 seconds) and unlimited time. When '12 sec' is selected, the machine switches to receiving mode as soon as it detects a period of silence. When 'unlimited'is selected, the machine waits until the answering operation is concluded even though a period of silence is detected. After the answering operation is concluded, the machine switches to receiving mode.
SEND FAX LEVEL
You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm. Caution: The Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily.
ERROR RATE
Tou can set the Error Rate between 5% and 10%. During operation the set monitors the rror rate. When the rror rate approaches the preset value the machine automatically steps down the baude to 2400bps to ensure that the selected error rate is not exceeded.
MODEM SPEED
You can set the maximum modem speed. It is better left set 33.6Kbps (the default setting ). During call setup the baud rate is automatically adjusted to suite the slowest device. Only adjust this where the local line conditions are extremely poor.
4-4-4 MEMORY CLEAR
CLEAR ALL MEMORY
This function resets the system to its original factory settings. All settings entered in User Mode and Tech Mode are reset. This includes any User Phone Book entries, jobs stored in memory or received documents that have not been printed. If possible use the Control Panel software to download customer settings and phone book settings before carrying out a full reset. When diagnosing or testing a faulty unit this function is often useful. Be aware that all error reports are also cleared. < Method >
1. Select the [MEMORY CLEAR] in TECH MODE. 2. Push the ENTER button. 3. Select your country. 4. Push the ENTER button and all memory will be cleared.
NOTICE : Always perform a memory clear after replacing the main board or updating the firmware. Otherwise, the system may not operate properly.
4-8
Samsung Electronics
Troubleshooting
4-4-5 MAINTENANCE
CLEAN DRUM
Use this feature to remove toner particles remaining in the OPC drum unit. Use this feature when print quality falls or when marks or specks appear on the printout. You should perform this feature several times until a clean printout appears. The machine automatically pulls in a sheet of paper and prints out. Excess toner particles on the OPC drum surface are fixed to the paper.
FLASH UPGRADE
This function is used to update the system Firmware. There are 2 methods Local and Remote. More information can be found in the firmware upgrade section.
ADJUST SHADING
This option is used to test and check the functionality of the CCD (Charge Coupled Device). Use this when poor quality scanning or copying is reported.
< Method >
1. Select the [ADJUST SHADING] in TECH MODE. 2. Push the SET UP button. The unit scans a "white image" using the `white bar' 3. After the scan, CCD SHADING PROFILE similar to that shown will be printed out. 4. If the printed image is different to the image, if the lines are significantly lower or higher, or if there are high or low spots in the chart then the CCD is defective.
NOTICE : When you test the CCD, make sure that the cover is closed."
ANSWER ON CNG
The function is to control the CNG TONE recognition times for entering receiving mode from the AUTO MODE or ANS/FAX MODE.
Samsung Electronics
4-9
Troubleshooting
CLEAR COUNT
This function erases the counters stored in system memory. These are shown in the highlighted area in the Sytem data List shown below (printed in TECH MODE) Note the Current Drum Page Count cannot be erased. This is cleared using the NEW DRUM function (USER MODE MAINTENANCE NEW DRUM)"
FIRMWARE VERSION ENGINE VERSION EMULATION VERSION TOTAL PAGE COUNTS CRU PRINTS REPLACED TONER COUNTS REPLACED DRUM COUNTS CURRENT DRUM COUNTS PLATEN SCAN PAGE COUNTS ADF SCAN PAGE COUNTS
: : : : : : : : : :
1.00 1.00 PCL6 2.32 07-11-2001 PCL5e 1.48 07-19-2001 123 123 1 1 112 23 10
< SYSTEM DATA LIST >
PATTERN TEST
Using this pattern printout, you can check if the printer mechanism is functioning properly. It is used in the production process and is not intended for Service use."
ROM TEST
Use this feature to test the machine'S ROM. The result and the software version appear in the LCD display. · FLASH VER : 1.00 V · ENGINE VER :1.00V
DRAM TEST
Use this feature to test the machine's DRAM. The result appears in the LCD display. If all memory is working normally, the LCD shows << O K >>
SRAM TEST
Use this feature to test the machine's SRAM. The result appears in the LCD display. If all memory is working normally, the LCD shows << O K >>
MODEM TEST
Use this feature to hear various transmission signals to the telephone line from the modem and to check the modem. If no transmission signal sound is heard the modem may be faulty."
SWITCH TEST
Use this feature to test all keys on the operation control panel. The result is displayed on the LCD window each time you press a key. 4-10 Samsung Electronics
Troubleshooting
NOTIFY TONER LOW
With this feature enabled, when the toner becomes low, the toner low information will be sent to a specified contact point, for example, the service company. After you access this menu, select ON, and when the LCDprompts, enter the name and the number of the contact point, the customer's fax number, the model name, and the serial number."
PROGRAM DIAL
This is a special feature which allows the TECH USER to set parameters for a specific dialed location (which must be in the one touch or speed dial phone books). Parameters can be set to override the normal; default settings to enable the machine to cope with calls to destinations with known line problems"
4-4-6 REPORT/HELP
MSG. CONFIRM
It shows the result of the last send operation.
PROTOCOL LIST
This list shows the sequence of the CCITT group 3 T.30 protocol during the most recent sending or receiving operation. Use this list to check for send and receive errors. If a communication error occurs while the machine is in TECH mode, the protocol list will print automatically.
Facsimile Information Field data described in hexdecmal code Sending/Receiving Name of signal (Facsimile Control Field) FIF data described in ASCII code
PROTOCOL DUMP LIST
NOV-20-2001
S/R FCF S S S S S S R R S R R S R S S
FIF DATA!
ASCII
NSF 61005820003380140200001302090018010000 CSI 2020202020202020202020202O20202020202020 DIS 00000000 01110111 00010111 00100010 NSF 61005020003380140200001302090018010000 CSI 202020202020202020202022O202020220202020 DIS 00000000 01110111 00010111 00100010 TSI 2020202020202020202020202O20202020202020 DCS 00000000 01100001 00010101 00000000 FTT TSI 2020202020202020202020202O20202020202020 DCS 00000000 01100001 00010101 00000000 CFR MPS MCF DCN
HELP
It shows a brief description on the machine's basic functions and commands. Use it as a quick reference guide
Samsung Electronics
4-11
Troubleshooting
RECEPTION
This journal shows information relating to document reception, the time and dates of up to 40 of the most recent documents received are stored.
TRANSMISSION
This journal shows information relating to document transmission, the time and dates of up to 40 of the most recent documents transmitted are stored.
SYSTEM DATA
This list provides a list of the user system data settings and tech mode settings.
PHONEBOOK
It lists all telephone numbers that have been stored in the machine.
SCHEDULE JOB
This list shows information relating to the documents currently stored for delayed transmission. It provides the operation number, starting time, type of operation, etc.
ERROR CODE
This list shows a list of errors that have occurred since the last memory clear.
4-4-7 Firmware Upgrade
This function is used to update the machines Firmwar, there are two Upgrade methods - local and remote.
4-4-7-1 Local Machine
RCP(Remote Control Panel) mode
This method is used with the machine connected using either a Parallel Port or USB Port to a PC and uses the RCP (Remote Control Panel) software to upgrade the Firmware. < Method > How to Update Firmware using RCP 1. Connect PC and Printer with Parallel Cable or USB Cable. 2. Execute RCP and select Firmware Update. Current Firmware version and Emulation Version are displayed on Current version window. 3. The Firmware file must be stored on the PC, in a path close to the root of C:, ie C:\TEMP. Search for the firmware file to use to update the machine by using the Browse Icon. 4. Click the Update icon, the firmware file is transmitted to the Printer automatically and the printer is initialized when the update is finished. 5. Click the Refresh icon and check that the version number displayed matches the new firmware just loaded."
4-12
Samsung Electronics
Troubleshooting
DOS Command mode
This method is just for Parallel Port. Connect to PC with Parallel cable and enter DOS Command to upgrade the Firmware.
< Method >
a). You will need the following files:- down.bat, down_com.bin, fprt.exe, and "Rom File": this is the firmware file to be loaded into the printer. Save the files in the same folder, close to the root of C;, e.g. C\TEMP b). At a DOS prompt, input one of the commands shown below and press the enter key. The file will then be sent automatically to the printer. c) There are two commands use the correct one depending on the printer status. * when the printer is in the user mode and is in the normal ready condition: down "rom file" * When the product is been placed in the upgrade mode (TECH MODE MAINTENANCE FLASH UPGRADE LOCAL) fprt "rom file" d) Do not turn off the power while the upgrade is in process."
4-4-7-2 Remote FAX
This function uses one fax machine already loaded with the latest firmware to upgrade one or more other remote machines of the same type using the telephone network. < Method > 1. Operate a fax with the latest firmware to prepare it to send the upgrade. (TECH MODE MAINTENANCE FLASH UPGRADE REMOTE) 2. Input the telephone number of the fax machine to be upgraded. (Several faxes can be upgrade at the same time. In this case, enter the telephone number for each machine.) 3. Then press the enter button, this will send the firmware file by calling to the each of the selected fax machines in turn. (Around 10~15 minutes is needed to send the file to each machine.) < Caution > 1. The sending and receiving fax machines must be the same model. 2. A sending fax must be set up as ECM mode, and the receiving machine memory must be set up as 100%. If not the upgrade will fail."
4-4-8 Identify Sale Date(Only SCX-5315F)
This function confirms the date that the consumer first uses the product. The date stored is the date of the first scan or first print whichever operation the user carries out first. This information is retained even after a memory delete (Clear All Memory).
< Method > Press MENU, #, 1, 9, 3, # in sequence. The Firmware version is displayed on the LCD. Press 1( in the number keypad) : The LCD display shows "Updated date" Press 2( in the number keypad) : The LCD display shows "Product first use date"
Samsung Electronics
4-13
Troubleshooting
4-5 ENGINE TEST MODE
The Engine Tests Mode provides useful test functions for checking the status of the print engine. It can test many of the separate sections of the print engine and displays the result of the test on the LCD. These tests are classified in 6 groups (0~5), and the functions of these tests are shown below.
4-5-1 To enter the Engine Test Mode
Press MENU, #, 1, 9, 3, 1 in sequence, and the LCD briefly displays `Engine Test Mode', the machine has entered service (tech) mode.
4-5-2 Diagnostic
No. 0 Sub No. 1 2 3 4 Engine test Motor Test PTL T est Fan T es t Fus er Test 1: On, 1: On, 1: On, 2: Off 2: Off 2: Off Remark
1 : On, 2: Off If its temperature is lower than the Standby (160 C), the fuser is on, but if it is higher than the Standby, the fuser is off. 1: On, 1: On, 1: On, 1: On, 2: Off 2: Off 2: Off 2: Off
1
1 2 3 4
LSU Motor Test LSU Hsy nc Test LD On Test LSU Operation Feed Sensor T es t Exit Sensor Test Cov er Sensor Tes t
2
1 2 3
Sensor O n : FEED SENSOR ON Display Sensor O ff : FEED SENSOR OFF Display Sensor O n : EXIT SENSOR ON Display Sensor O ff : EXIT SENSOR OF F Display Sensor O n : COVER SENSOR ON Display Sensor O ff : COVER SENSOR OFF Display
4 5 6
1'st Empty Test MP Empty Sensor Test BIN FULL Sensor Test 1'st CAST Solenoid Test MP Solenoid Test Duplex Solenoid T es t MHV Test Dev Bias Test THV EN/NEG Tes t THV Tes t THV Trigger Test CRU Error Check New OPC Check All Function Test
Sensor O n : 1's t PAPER Empty Display Sensor O ff : 1's t PAPER No Empty Display Sensor O n : MP PAPER Empty Dis play Sensor O ff : MP PAPER No Empty Display Sensor O n : BIN FULL SEN ON Display Sensor O ff : BIN FULL SEN O FF Display
3
1 2 3
1: On, 1: On, 1: On, 1: On, 1: On, 1: On, 1: On, 1: On,
2: Off 2: Off 2: Off 2: Off (-1450v) 2: Off (-450v) 2: Off 2: Off (1300v) 2: Off
4
1 2 3 4 5
5
1 2
1: Check, 2: Next 1: Check, 2: Next For SMD Test, Pus h up k ey : Next function All Function : No.0~4
6
1
4-5-3 ENGINE PRINT
When the function is enabled a group of parameters are printed at the bottom of each page which define the print engine condition. It is a manufacturing test feature not intended for service use. This setting remains enabled even when you exit from Engine Mode. Remember to turn it off.
4-14
Samsung Electronics
Troubleshooting
4-6 Troubleshooting
4-6-1 Scanner
4-6-1-1 COPY
PROBLEM White copy
ITEMS TO BE CHECKED. · Ensure the Scanner cover is closed. · Check shading profile
HOW TO SOLVE · Room lighting can penetrate thin paper causing quality problems · Carry out the "Adjust Shading" procedure in Tech mode · Check the CCD harness contact. · Remake shading profile in the tech mode. · Carry out the "Adjust Shading" procedure in Tech mode · A gap above 0.5mm can cause a blurred image. · See "Print" troubleshooting. · Check scanner carriage, motor, gearbox, belt and belt tension spring · If any driver is defective, replace it. - U2-4, 11, 18, 25 signals swing between OV and 24V when operating.
Black copy
· Check the CCD problem in Main PBA. · Check shading profile.
Defective image quality
· Check shading profile. · Check the original is laying flat on the scanner glass. · Check printing quality.
Abnormal noise
· Check the Scanner drive mechanism. · Check the Motor Driver chip on the driver PBA.
Samsung Electronics
4-15
Troubleshooting
4-6-1-2 PC-Scan
PROBLEM Scanning Error
ITEMS TO BE CHECKED. · Check the printer cable is correctly installed. · Check that the TWAIN driver is installed.
HOW TO SOLVE · Use standard IEEE1284 cable.
· Remove any other scanner driver. · Reboot after reinstallation of the TWAIN driver. · Check the parallel-port-related items in the CMOS Setup. As a printer port, ensure ECP is selected. · Check CN12 contact in Main PBA · If any signal level is defective, replace driver PBA. - U33-26, 27, 28, 43, 44, 45, 46, 47 on Main PBA are 0.8V to 2.4V TTL signal. · Otherwise, replace Main PBA. · If USB signal level is defective, replace Main PBA. · Remake shading profile in the tech mode.
· Check the printer port (Parallel) BIOS settings.
· Check harness contact. · Check the IEEE1284 signal levels.
· Check the USB signal level.
Defective image Quality
· Check shading profile.
· Check the gap between original and scanner glass. Abnormal noise · Check the Scanner Motor and any mechanical disturbance.
· The gap above 0.5mm can cause a blurred image. · Check the right position of the Scanner Motor, and check the any mechanical disturbance in the CCD carriaging part. · If any driver is defective, replace it. - U2-4, 11, 18, 25 = 0V to 24V swing signal when operating.
· Check the motor driver in Driver PBA.
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Samsung Electronics
Troubleshooting
4-6-2 FAX(only SCX-5315F)
4-6-2-1 FAX/TELEPHONE Precautions
PROBLEM TEL LINE CANNOT BE ENGAGED (NO DIAL TONE) ITEMS TO BE CHECKED. · When you press " OHD" key: a) Check line cord connection. b) Check MAIN LIU harness, and CN1 (LIU PBA). c )Check relay operation of LIU PBA : Is the control signal of CN18(main) low? · Check CN18 (main PBA), MAIN-LIU harness, and CN1 (LIU PBA) · Check DP control signal of CN18-11 of MAIN PBA and the circuit around R15. U6 and Q2 of Liu PBA. · Check CN18 (main PBA), MAIN LIU harness, and CN1(LIU PBA). · Is the external phone hooked off? · Check `hook off' : Refer to `TEL LINE CANNOT BE ENGAGED' above. · Check transmission path : Check output of CN20-3.4 and T2-4(LIU PBA). · Check reception path : Check output CN11 (LIU PBA) and input of CN18-1 (main PBA). · Is the ring checked? Check ring pattern at CN1-9 (LIU PBA). · Refer to `Defective Transmission.' HOW TO SOLVE a) insert it correctly into the connection jack called "line". b) Replace defective parts. c) Replace main PBA IF the control signal of CN18(main) is high. Replace LIU PBA if high but phone line cannot be connected. · Replace defective parts.
Cannot MF dial
MF dial is possible but not DP dial.
· Replace LIU PBA.
Defective fax transmission
· Replace defective parts. · Replace LIU PBA if low. · Refer to `TEL LINE CANNOT BE ENGAGED' above. · Replace main PBA, if abnormal. · Replace LIU PBA if CN1-1(LIU PBA) is not confirmed. Replace main PBA if CN20-1(MAIN PBA) is not confirmed. · Replace LIU PBA if it cannot be checked. · Refer to `Defective Transmission'.
Defective automatic fax reception
Samsung Electronics
4-17
Troubleshooting
4-6-3 Print Quality
Error Status Vertical black line and band Check 1. Faulty Toner cartridge 2. LSU 3. Bad cleaning blade of drum cartridge. Solution 1. Change Toner cartridge 2. Replace LSU 3. Chang Drum cartridge.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Vertical white line
1. LSU window contamination 2. Toner cartridge
1. Clean LSU window 2. If not LSU, change Toner cartridge.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
No image 1. OPC is properly grounded? 2. LSU running well? 3. Bias voltage is correct? 4. Toner low? 5. Is there video data from Main PBA 1. Measure the resistance between frame ground and the OPC ground spring attached to the frame. Confirm good ground. If faulty check ground path through the frame . Also check OPC Ground Screw see page 3-18 2.Adjust LSU or replace it 3. Normal Dev bias = -440V 4. Shake toner cartridge and print. If an image appears toner is empty 5. Print engine test pattern , replace Main PBA 1. Checking LSU light power is difficult. Compare with new one and check. 2. Check toner and developer counter 3~4. Change the HVPS Board. 5. Stray toner can increase contact resistance and cause a bad contact. Clean contaminated area.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Light image
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Dark image
1. LSU light power normal? 2. Enough toner? 3. High charger voltage? 4. Lower bias voltage 5. Contamination of high voltage contact. 6. Transfer voltage and roller.
Digital Printer Digital Printer
1. LSU light power normal? 2. Bias voltage output is high? 3. Video data is always supplied? 4. Bad C/R voltage contact.
1. Checking LSU light power is difficult. Compare with new one and check. 2. Normal Dev bias = -350V 3. Check Video Data signal(CN2). Replace main PBA board. 4. Replace Drum Cartridge or check where is bad point of machine.
4-18
Samsung Electronics
Troubleshooting
Error Status Background
Check 1. High voltage output is normal? 2. C/R of Toner cartridge is contaminated?
Solution 1. Change the HVPS Board. 2. Print a number of "Cleaning" sheets if problem persists change the cartridge..
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Ghost 1. High voltage output. 2. Pre-Transfer Lamp. 3. Bad high voltage contact.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Stains on back of paper
1. Change the HVPS Board. 2. Check PTL lamp comes on replace if necessary 3. Clean the inside machine or replace toner cartridge.
1. Contamination of transfer roller. 2. Toner debris in paper path 3. Pressure roller contamination
1. Clean the transfer roller with vacuum cleaner. 2. Clean the paper path with a cloth or air duster. 3. Remove fuser and replace it.
Poor Fusing
1. Paper quality and finish? 2. Check fusing temperature. 3. The machine was kept at a low temperature for a long time?
1. Should use recommended paper. 2. Check engine controller board. If you do not have a thermometer, measure the thermistor voltage to CPU, If 2.3V±5% when printing is correct therwise disassemble fthe user and check the thermistor contacts and thermistor. 3. Re-check after allowing the machine to come up to room temperature.
Partial blank image (not periodic)
1. Toner is low? 2. The toner cartridge is out of position?
1. Replace Toner cartridge. 2. Checkand adjust.
Partial blank image (periodic)
1. repatative white or black marks at regular intervals.
Measure the spacing of the marks and compare the spacing to those given in the table below. · Spacing 1 and 2 Replace the OPC · Spacing 3 and 4 replace the toner car tridge · Spacing 5 replace the transfer roller · Spacing 6 and 7 replace the Fuser.
Samsung Electronics
4-19
Troubleshooting
Error Status Different image density (left and right)
Check 1. Uneven pressure between Charge roller and OPC Drum 2. Uneven pressure between Dev roller and OPC drum 3. Transfer roller's pressure force uneven at each side
Solution 1. Change OPC cartridge 2. Change toner and / or OPC Drum 3. Check left and right transfer roller springs
Horizontal lines or bands
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
1. Bad contact on high voltage terminal 2. Contamination of charge roller 3. Contamination of heat roller 4. Malfunction of LSU
1. Clean each contact and check continuity 2. Print several "cleaning sheets" replace OPC drum if problem persists. 3. Replace fuser unit 4. Check Main PBA., LSU harness and LSU
Abnormal Image Printing and Defective Roller
If abnormal image prints periodically, check the parts shown below.
NO 1 2 3 4 5 6 7 Roller OPC Drum Charge Roller Supply Roller Develope Roller Transfer Roller Heat Roller Pressure Roller Abnormal image period 94.3 mm 37.7 mm 35.8 mm 44.8 mm 56.6 mm 82.5 mm 78.5 mm Kind of abnormal image White spot. Black spot White spot. Black spot Horizontal dark band Horizontal dark band Contamination on reverse side of paper / transfer fault Black spot, White spot Contamination on reverse side of paper
4-20
Samsung Electronics
Troubleshooting
No Image
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
No image?
NO
A on next page
YES
Self test pattern prints? YES Check connection to computer or replace controller
NO
Self testing is possible ? YES
NO
Retest after replacing the connector or controller board
Take out the cartridge and prepare the tester for electronic connection
Is the OPC terminal of machine is well-connected to Frame? YES
NO
Repair or replace the GND terminal
Does the video data line to LSU transit to High/Low when printing? YES
NO
Check the path between Main board and HVPS. Repair or replace the defective component or board
The mirror in LSU might be misplaced so the light path to the OPC deviates ->Repair or replace LSU or remove any defective matters in the machine
Samsung Electronics
4-21
Troubleshooting
A
Transfer voltage OK? (on the transfer roller shaft) YES
NO
Are the connection terminal and connection correct? YES
NO
Repair or replace terminal
Replace HVPS or repair defective component
Developing (-440V) and supplying (-590V) voltage are OK? YES
NO
Is the connection terminal OK? YES Replace HVPS or repair defective component
NO
Repair or replace terminal
Does the counter indicate over the toner's guaranty life YES
NO
Transfer roller might be out of its location -> Locate the roller into its place This could occurs when he power of LSU is low or the density is low due to the obstacles on the window -> Replace LSU or clean the window
Replace the toner cartridge
4-22
Samsung Electronics
Troubleshooting
All Black
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
All black in printing area? YES
NO
Does the video data line to LSU transit to High/Low when printing? YES
NO
Check the path among video controller, engine board, HVPS, LSU for the shortage or open -> Repair or replace the boards
Replace LSU
Is charge voltage supplied from HVPS? YES
NO
Repair or replace HVPS
Is the Hsync/ signal received in LSU? YES
NO
Replace LSU
Charge part's contact is bad -> Repair or replace Drum cartridge
Samsung Electronics
4-23
Troubleshooting
Vertical White Line (Band)
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
White line missing definitely?
NO
Check if the printout is still has the same problem even right after passed through the transfer roller YES
NO
The ribs in fuser or toner on the roller may invoke the image problem -> Replace the fuser cover or the defective part The image is originally black or the black part is far close to the top -> Use the pattern which has the image below bigger than 10mm from the top
YES
Dirt of dust stuck onto the window of internal lens of LSU -> Clean it or replace LSU Preventive obstacles through the path between OPC of developer and LSU prevent the path -> Remove the obstacles
Toner material might be stuck to blade in the developer inside and it prevents toner supply -> Replace the developer Check both if the toner cartridge's counter is over its guaranty and amount of the toner material -> Replace the toner cartridge
4-24
Samsung Electronics
Troubleshooting
Dark Image
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
NO
Dark selected via RCP? YES
Change to Normal and test
NO Same at Normal? YES
END
Works cor with -300V of Bias voltage? YES
NO
Repair or replace the defective component
Works correctly after replaced LSU? YES
NO
Toner over supply due to the adjustment fault of metering blade in developer -> Replace developer
The power of LSU is set high or internal problem -> Replace LSU or adjust volume
Samsung Electronics
4-25
Troubleshooting
Background
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Recommended paper used? YES
NO
Print 20 to 30 pages using the recommended paper
- Adjust voltage or replace HVPS - Repair or replace after checking the terminals' contacts
NO
Transfer, charge and developing voltage are OK? YES
YES
Same problem occurs?
NO
END
Operating/ storage atmosphere is too high temperature /humidity? YES
NO
Dirt or dust around the charge roller? YES
NO
Replace the toner cartridge
Solve the problem under the recommended condition (10-32 degree Centigrade)
Clean the charge roller or replace step-up device /terminal after check
Check Terminals or contacts and 'Guide-Deve Spring' are misplaced -> Repair or replace transfer roller etc. Check if the LED of PTL in front of the transfer roller is on when it presses the top cover switch on purpose -> If not, replace PTL
NO
Work OK? YES
Internal blade or supplying part of the developer is defective -> Replace the toner cartridge
4-26
Samsung Electronics
Troubleshooting
Ghost
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Is it regular interval of 95mm? YES
NO
Is it regular interval of 45mm? YES
NO
Is it regular interval of 58mm? (as transfer roller interval) YES
Replace PTL assembly
NO
PTL lamp works OK? YES
A specific part of the transfer roller has ruined or its resistance value is changed -> Replace transfer roller Transfer roller cannot force regularly due to the gears eccentricity of transfer roller -> Replace the defective component
Check HVPS contacts and HVPS's selfoutput -> If failed, repair/replace HVPS
NO
Transfer voltage is set to standard? YES
Developing /supplying voltage normal? (-300V/ -500V) YES
NO
Irregularity of NIP between rollers in developer -> Replace developer
- Repair or replace HVPS - Check and Repair or replace the terminal contacts
Bias voltage is OK? (-300V)
NO
Adjust the Bias voltage or replace HVPS
YES
Operating/storage temperature is too low or not recommended paper used? YES Use the machine with recommended paper and at condition
NO
There may be a problem in toner layer control in toner cartridge -> Replace the developer
Samsung Electronics
4-27
Troubleshooting
Black Spot
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Is it regular interval of 38mm? YES
NO
When taking out the cartridge, toner leaks? YES
NO
Bad image removes by scratching? YES
NO
The problem randomly occurred due to the toner fallen -> Clean the machine
The problem occured since the obstacles stuck to charge roller -> Clean the Charge Roller and then reprint.
Toner leaks and much toner material dropped onto the paper -> Replace the developer
Check toner is stuck onto the P/R or H/R in fuser -> Clean it or replace
4-28
Samsung Electronics
Troubleshooting
Horizontal Band
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Black band?
NO
Black band is far about 95mm from white band?
NO
YES Problem of internal contacts in OPC -> Replace developer
The OPC is damaged under the direct sunlight for around 5 minutes -> If the same problem persists in 10 hours, replace the developer
The black band has regular interval? YES
NO
This occurs when no Hsync/ at LSU -> Replace LSU
94mm interval?
NO
Does it appear at every 83mm at specific place? YES
NO
YES
Problems of terminal contact, transfer voltage supplying, and transfer roller's due to the charge roller is ruined (38mm) -> Repair/replace HVPS, developer
The OPC is damaged due to the irregular transfer voltage of HVPS -> Repair/replace HVPS -> If the same problem persists, replace the developer
Heat roller is ruined -> Replace the roller
Samsung Electronics
4-29
Troubleshooting
Irregular Density
OK after taking out and rocking the toner cartridge? YES
NO
When gray pattern printing, irregular density persists? YES
NO
transfer/ charge/developing voltage drops while printing? YES
NO
Defective agitator in the toner supplying part of developer ->Replace the developer Check if the 'guide deve spring' works OK and repair/repalce
Check high voltage output and repair/ replace terminals, HVPS
It is over the guaranty life of toner cartridge (Check the counter and replace it)
PTL lamp works OK? YES
NO
Replace lamp
Any obstacles on the PTL lamp? YES
NO
Bad images NO around the no image area? YES
Irregularity of toner supply from developer -> Replace developer
Clean the window of PTL
Light distortion due to the mirror ruined or LSU's diffused reflection -> Replace LSU
4-30
Samsung Electronics
Troubleshooting
White Spot
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
Is it regular interval of 95mm? YES
NO
Transfer voltage is normal?
NO
Too high voltage supplied due to the setting error of transfer voltage -> Adjust/replace HVPS
YES
Obstacles stuck on OPC's surface -> Clean the OPC and machine or replace developer When putting in/out the developer, scratch is made -> Replace the developer
D/R in developing unit has the defect -> Replace the developer
Samsung Electronics
4-31
Troubleshooting
Trembling at the End When OHP Printing
Recommended OHP film used? YES
NO
Use the recommended film
Inserted over than 10 films into the MPF? YES
NO
When OHP printing, does the fan temporarily stops and revolves? YES
NO
Use the recommended film
When multi-page OHP printng, less than 10 films are guranteed. (Reduce the number of films and re-insert after paper check LED if off)
Other parts are touching the fan and prevents it from revolution -> Check and repair
4-32
Samsung Electronics
Troubleshooting
Poor Fusing Grade
After printing NO completed, any error related fuser?
The machine placed under the severe low tempera ture for a long time?
NO
While printing, the voltage of pin 60 of U36 (CPU) on Main PBA is 2.1V - 2.6V?
NO
Thermistor's contact is OK?
NO
YES
YES
YES
YES
Both ends of thermostat open?
NO
Place the machine at normal temperature and re-test
Re-assemble thermistor
YES
Replace thermostat and re-test
Open the top cover. When black printing, is the fuser NIP width is 3.03.5mm?
NO
Check if the hardness of P/R, and spring force is OK? (hardness: 24 degree, spring's force: 3 Kg)
YES
Replace the control component on Main PBA Check any contact problem in thermistor and repair
The paper used is too thick or contains too much cotton in it -> Re-test with the recommended paper
Samsung Electronics
4-33
Troubleshooting
4-6-4 Malfunction
Error Status No power Check 1. Check power is supplying 2. Check fuse F1 open Fuser Error 1. Thermostat open Solution 1. If supplying power differs from machine's power rating, replace the machine. 2. Replace it. 1. Detach AC connector and measure the resistane between pin 1 and 2. If it is megohm, thermostat is open, Replace it. 2. Check bad connector contact or wire is cut. 3. Check thermistor wire and its connection. 4. Replace Main PBA 1. Open Side cover and press the lever with pen. If Controller detects cover close, there is some mechanical trouble in Side cover and lever's assembly. If not so there is electrical problem.
2. AC wire open 3. Thermistor wire open 4. Main PBA Cover open 1. When close Side cover, check the lever is pressed 2. Micro switch's contact 3. CPU and related circuit Check where Jam 0 happens 1. Paper is not picked up 2. Paper is located in feed sensor 3. Happened when inserting specific papers such as envelope into the MPF (Multipurpose Paper Feeder)? 4. Happened when inserting specific papers such as envelope into the Manual Feeder?
Jam 0
1. Check whether solenoid is working or not by using Engine test mode 2. Check feed sensor malfunction. 3. Re-try inserting a fewer papers.
·fan the papers and align ·take out the loaded papers and insert them reverse direction
4. Take out the loaded papers and insert them reverse direction ·inserted papers as recommended for Manual Feeding? ·When loading, tap the papers until paper detect sensor senses loading 5. When using long papers, use the Stacker Extender 6. Adjust Guide to fit the paper width 1. It is mostly resulted from double feeding. Check paper is well stocked in feeder. 2. Check feed actuator position and actuator's operating. There may be stiff movind or double reflection. If not so, check the operation of feed sensor by Engine test mode. 3. Check exit lever operation. Remore jam and check actuator moving by hand. If actuator is too stiff, paper is wrapped around the heat roller. Remove obstacles or replace. 1. Remove paper using pinset or some tool and watch if separate claws have any troble. Clean around fuser. 2. Check locking works wells. Watch whether the ribs of exit cover hace any burr or resisitive edge. If they do, remove obstacles or replace.
5. Is the Stacker Extender is folded out? 6. Does not the Guide Adjust distort the papers Jam 1 Paper is stopped in just after of fuser unit.
Jam 2
Check where Jam 2 happens 1. Paper is curled and cannot exit. 2. Paper is curled in the exit cover?.
4-34
Samsung Electronics
Troubleshooting
Error Status
Check 1. Then paper is not drawn in because of the stack of papers in the Out tray. 2. Does it curl while coming out?
Solution 1. Load recommended quantity of papers 2. Open the Cover Front and check whether roller or spring, which are related to paper out, is not out of position. If so, re-locate or replace. 1. Check whether the spring is expanded or not. 2. Check armature is well installed. It may be unstable assemble. 3. Remove the Main PBA. 1. Remove the Toner cartridge and open the cover and press cover open switch lever and measure the voltage with high voltage probe and sending printing data. If the voltage is normal, change the toner cartridge. 2. Disassemble the left side cover, and check HV of the solder side of HVPS and change it. MPF : Turn the power off and on. Open and close the Side cover to return to the original state. Cassette : Adjust Guide to fit the paper width.
Jam 2 at face-down tray
Clutch error
1. Check the spring of solenoid 2. Check the armature assembly/cushion 3. Electrical check
High voltage error
1. Check the terminal output voltage
2. Check HVPS
Feeding obstacles
Does the Plate-knockup prevent the paper loading?
Skew
Is the Guide adjust set to the paper width?
1. Took out the Stacker extender to support long papers? 2. Stacked too many papers more than Stacker can hold? Check CBF Harness_CN7. (Main PBA to LSU) Document is not picked up(in ADF).
Fit the paper width using the Guide adjust.
Stacking
1. Use extender as per the paper length. 2. The Face-up stacker normally can hold 100 pages when using 75g/m2, however, stacking capacity can be lowered depending on the type of papers. Refer to troubleshooring "ENGINE ERROR".
Engine Error Document Jam
1. Check document is well stocked in ADF. 2. Check whether document was been fastened together by staple or clip. 3. Load recommended quantity of papers. 1. Check whether the Reg. sensor is working or not. 2. Check whether the Feed Roller is working or not. 1. Check the Open Cover whether there are bosses. 2. Check the ADF ass'y is well assemble.
Document is stopped after it has fed into the ADF. Does it curl while coming out?
Samsung Electronics
4-35
Troubleshooting
No Power (LCD NO display LED Off)
Plug in the power cord? YES
NO
Check the voltage first and plug the power cord
The power NO voltage supplying is the same as rating? YES
Supply the power as the rating
The fan revolves when powered on? YES
NO
Connections NO on board are OK? YES
Re-connect firmly and re-test
LEDs blink once when powered on? YES
NO
Fuse of SMPS if open? YES
NO
Replace the fuse
Shortage on the OPE panel board? YES
NO
The connection error between controller board and panel board or malfunction of boards. -> Replace the boards
Shortage between 5V and GND, or between 24V and GND? YES
NO
Toner cartridge is in the set? YES
NO
Put in the cartridge
Repair/replace the board
Remove the shortage or replace the board
Detect failure due to the board which detects side cover open or switch error -> Replace the board or switch
4-36
Samsung Electronics
Troubleshooting
Fuser Error
Measure the resistance at the both ends of AC Line with covers open
NO Less than 10W?
Thermostat is open due to the heat etc. -> Replace the thermostat
YES
Remove the covers
AC is being supplied?
NO
Re-assemble the top cover and close it
The voltage of pin #6 of U5 on the Main PBA is about 3.2V? If not check the CN4 on the power board.
YES
The voltage of pin #60 of U36 (CPU) on the Main PBA is about 2.65V when printing? YES
NO
Thermistor, connecting point or engine board defect -> Repair/replace the component/board
END
Samsung Electronics
4-37
Troubleshooting
Paper Jam (Mis-Feeding)
The Main PBA board defected -> Replace boards The solenoid defected -> Replace it The pick-up unit is assembled wrong -> Re-assemble or replace the unit
Sounds the solenoid on when starts print? YES
NO
Does the paper move? YES
NO
Does the paper move more than NO 100mm? YES
Too many papers in the feeder? YES
Feeder sensor is assembled reverse? YES
NO
The sensor and Main PBA defected -> Repair/replace
Reduce the amount and re-test
Switch them
Paper guides fit the paper width? YES
NO
Take out the paper and re-insert
Paper end curled?
NO
Does the extender pulled out?
NO
Pull out the extender
YES Use the recommended and quality paper
YES Use the MPF for the thick paper such as envelope and cardstock
4-38
Samsung Electronics
Troubleshooting
Paper Jam(Jam 1)
Paper NO stopped before the OPC? YES
Paper NO stopped before the fuser? YES
The actuator of NO paper exit sensor works OK? YES
Check the actuator exists and its operation and around the Main PBA -> Replace
Check the LSU and if it has the defect replace it
Is the paper rolled around the presseure roller? YES
NO
Feeds NO multiple pages?
YES
Check the roller and ribs of fuser are in place, and remove burrs, if any -> Remove the factors of jam
Remove the fuser, remove the paper and replace the pressure roller, if necessary
Remove any factors
Severe skew when feeding? YES
NO
The paper came out through between fuser and developer? YES
NO
Check the input path to the fuser (such as mis-assembly)
Adjust the paper guides to fit the paper width The force of springs pressing the developer is weak -> Check guide-DEVE
Too thin or sensitive paper to static electricity? YES
NO
Check guide transfer is grounded Check the shutter prevents feeding
Use the recommended paper
Samsung Electronics
4-39
Troubleshooting
Engine Error
Check CBF Harness-CN7 (Main B'D to LSU) YES
NO
Try again to connector or Replace connector
Check Main B'D CN7-9, P_MOTOR Signal ( ) YES
NO
Replace Main PBA
Check Main B'D CN7-8, LREADY Signal ( ) YES
NO
Replace LSU
Check Main B'D CN7-4, LDON Signal ( ) YES
NO
Replace Main PBA
Check Main B'D CN7-1, HSYNC Signal ( ) YES
NO
Replace LSU
END
4-40
Samsung Electronics
Troubleshooting
4-6-5 Toner Cartridge and Drum Cartridge Service
It is not guaranteed for the default caused by using other toner and Drum Cartridge cartridge other than the cartridge supplied by the Samsung Electronic or caused by non-licensed refill production.
Precautions on Safe-keeping of the Drum Cartridge
Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.
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.
Service for Judgement of Inferior Expendables and the Standard of Guarantee
Please refer to User's Manual or Instructions on Fax/Printer Expendables SVC for the judgement of inferior expendables and the standard of guarantee besides this service manual.
Samsung Electronics
4-41
Troubleshooting
4-6-5-1 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. · Periodically a noise as "tick tick" occurs. Cause & Check 1. If the image is light or unclean and untidy printed image - Shake the developer and then recheck. (1)NG: Check the weight of the developer (2)OK: Lack of toner, so the life is nearly closed. 2. Some part of image is not printed - Shake the developer and then recheck. (1)NG: Check the weight of the developer and 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 as "tick tick" occurs - Measure the cycle and the weight of the developer. Solution 1. All of 1, 2, 3 aboveIf it become better by shaking, replace with a new developer after 50-100 sheets in the closing state of the life span.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
2. In case of 2If it becomes better after cleaning the LSU window, then the developer 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 developer has been nearly exhausted.( Purchase and replace with a new developer after using about 200 sheets at the point of occurrence)
4. White vertical stripes on the whole screen or partly : Check the weight of the developer.
4. In case of 3This is a phenomenon caused by lack of toner, so replace with a new developer.
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 developer OPC drum. 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 developer. (2)Check whether the state of the terminal assembly is normal.
1. If both ends of the OPC drum are contaminated with toner: Check the life of the developer.
2. Check whether it could be recycled.
4-42
Samsung Electronics
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 periodical black dots occur, this is because the developer rollers are contaminated with foreign substance or paper particles. (1)37.7mm interval : Charged roller (2)94.3mm interval : OPC cycle
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. Caution : Never use usual alcohol.
Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer
2. If white spots occur in a black image at intervals of 94.3 mm, or black spots occur elsewhere, the OPC drum is damaged or foreign substance is stuck to the surface.
2. In case of 2 If they are not disappeared by running OPC Cleaning Mode Print 4-5 times. : at intervals of 94.3mm Replace the OPC Drum. : at intervals of 37.7mm Remove foreign substance, Clean the Charged Roller : Broken image Replace the developer according to carelessness.
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.
3. In case of 3 - Exchange the transfer roller because the life of the transfer roller in use has been expired. (Check the transfer voltage and readjust if different.)
Recycled product
· Poor appearance of the developer. · Unclean and rough printouts. · Bad background in the image.
1. Poor appearance of the developer. (1)Check the damage to label and whether different materials are used. (2)Check the appearance of parts of the developer, such as frame, hopper.
1. In case of 1 (1)If there is an evidence of disassembling the developer. (2)If materials other than normal parts of the developer are added or substituted.
2. Unclean and rough printouts. (1)Check whether foreign substance or toner are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the terminal assembly is normal.
2. In case of 2 - If there are any abnormals in connection with the situation of 1. (1)It occurs when the developer is recycled over 2 times. (2)If toner nearly being expired are collected to use, it is judged as the recycled developer.
Samsung Electronics
4-43
Troubleshooting
Fault Ghost & Image Contamination
Signs · The printed image is too light or dark, or partially contaminated black. · Totally contaminatedblack. (Black image printed out)
Cause & Check 1. The printed image is too light or dark, or partially contaminated black. (1)Check whether foreign sub stance or toner are stuck to the terminal(point of contact) of the developer. (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: · Fully stick the terminal to or reassemble it after disassembling. · Disassemble the side plate and push the terminal to be stuck, then reassemble it.
2. Totally contaminated black. (Black image printed out) (1)Check whether foreign sub stances 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 phenomenon when the OPC drum of the developer is not electrically charged. Clean the terminals of the charged roller, then recheck it.
4-44
Samsung Electronics
Troubleshooting
4-6-6 The cause and solutions of bad environment of the software 4-6-6-1 The printer is not working (1)
· Description : While Power turned on, the printer is not working in the printing mode.
Check and Cause 1. Check if the PC and the printer is properly connected and the toner cartridge installed.
Solution 1. Replace the printer cable. If the problems not solved even after the cable replaced, check the amount of the remaining tone. 2. Check if the connection between PC and printer port is proper. If you use windows, check if the printer driver in the controller is set up. If the printer driver is properly set up, check in which program the printing is not working. The best way to find out is to open the memo pad to check the function of printing. If it is not working in a certain program, adjust the setup the program requires. Sometimes, the printout is normal within the Windows basic programs, but it's not working in a particular program. In such case, install the new driver again. If not working in the Windows basic program, Check the setup of the port of CMOS is on ECP. And check the address of IRQ 7 and 378 3. If the scanner needs to be connected to the printer, first the remove the scanner from the PC to see if the printer is properly working alone.
2. Printing is nor working in the Windows.
3. Check if the printer cable is directly connected to peripheral devices
4-6-6-2 The printer is not working (2)
· Description : After receiving the printing order, no response at all or the low speed of printing occurs due to wrong setup of the environment rather than malfunction of the printer itself.
Check and Cause 1. Secure more space of the hard disk.
Solution 1. Not working with the message 'insufficient printer memory' means hard disk space problem rather than the RAM problem. In this case, provide more space for the hard disk. Secure more space using the disk utilities program. 2. The connection of the cable and printer port is not proper. Check if the connection is properly done and if the parallel port in CMOS is rightly set up. 3. As a printer port, Select ECP or SPP among SPP(Normal), ECP, and EPP modes(increase printing speed) SPP normal mode support 8-bit data transfer, while ECP Mode transfer the 12-bit data. 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.
Samsung Electronics
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Troubleshooting
4-6-6-3 Abnormal Printing
· Description : The printing is not working properly even when the cable has no problem. (even after the cable is replaced) If the printer won't work at all or the strange fonts are repeated, the printer driver may be defective or wrong setup in the CMOS Setup.
Check and Cause 1. Set up the parallel port in the CMOS SETUP.
Solution 1. Select SPP(Normal) or ECP LPT Port the among ECP, EPP or SPP in the CMOS Setup.
2. Printer Driver Error.
2. Check the printer in My Computer.(to see if the printer driver is compatible to the present driver or delete the old driver, if defective and reinstall the new driver) 3. Delete the unnecessary files to secure enough space of the hard disk and start printing job again.
3. Error message from insufficient memory. (The printing job sometimes stops or due to insufficient virtual memory, but it actually comes from the insufficient space of the hard disk.)
4-6-6-4 SPOOL Error
· Description : To spool which stands for "simultaneous peripheral operations online" a computer document or task list (or "job") is to read it in and store it, usually on a hard disk or larger storage medium so that it can be printed or otherwise processed at a more convenient time (for example, when a printer is finished printing its current document).
Check and Cause 1. Insufficient space of the hard disk in the directory assigned for the basic spool. 2. If the previous printing error not solved.
Solution 1. Delete the unnecessary files to provide more space to start printing job. 2. If there are some files with the extension name of ****.jnl, Delete them and Reboot the Windows to restart printing job. 3. Shut down all other programs except the current one, if possible. 4. Delete the printer driver completely and reinstall it.
3. When expected to collide with other program.
4. When an application program or the printer driver is damaged. 5. When some files related to OS are damaged or virus infected.
5 After rebooting the computer, check for viruses, restore the damaged files and reinstall the program to do the printing job. 6. Add up enough memory to the PC.
6. Memory is less than suggested one.
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 the delete menu. If you intend to delete the current document being printed, the data being transferred to the printer will be put out and then the document is removed. Before choosing the document, the menu is still inactive. Or put the document out of the list and repeat the routine as in the above or finish the spool manager.
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