1.2.3 Handling Precautions
The following instructions are for your own personal safety, to avoid injury and so as not to damage the printer (1) Ensure the printer is installed on a level surface, capable of supporting its weight. Failure to do so could cause the printer to tip or fall. (2) The printer contains many rollers, gears and fans. Take great care to ensure that you do not catch your fingers, hair or clothing in any of these rotating devices. (3) Do not place any small metal objects, containers of water, chemicals or other liquids close to the printer which if spilled could get into the machine and cause damage or a shock or fire hazard. (4) Do not install the machine in areas with high dust or moisture levels, beside on open window or close to a humidifier or heater. Damage could be caused to the printer in such areas. (5) Do not place candles, burning cigarettes, etc on the printer, These could cause a fire.
1.2.4 Assembly / Disassembly Precautions
Replace parts carefully, always use Samsung parts. Take care to note the exact location of parts and also cable routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly. Please carry out the following procedures before dismantling the printer or replacing any parts. (1) Check the contents of the machine memory and make a note of any user settings. These will be erased if the mainboard or network card is replaced. (2) Ensure that power is disconnected before servicing or replacing any electrical parts. (3) Disconnect printer interface cables and power cables. (4) Only use approved spare parts. Ensure that part number, product name, any voltage, current or temperature rating are correct. (5) When removing or re-fitting any parts do not use excessive force, especially when fitting screws into plastic. (6) Take care not to drop any small parts into the machine.
1.2.5 Disregarding this warning may cause bodily injury
(1) Be careful with the high temperature part. The fuser unit works at a high temperature. Use caution when working on the printer. Wait for the fuser to cool down before disassembly. (2) Do not put finger or hair into the rotating parts. When operating a printer, do not put hand or hair into the rotating parts (Paper feeding entrance, motor, fan, etc.). If do, you can get harm. (3) When you move the printer. This printer weighs 7.87kg. Use safe lifting and handling techniques. Use the lifting handles located on each side of the machine. Back injury could be caused if you do not lift carefully.

Error: Indicates the status of your printer. Online: Indicates the status of your printer. Cancel: Prints a demo page or configuration page. Cancels the print job. Makes the printer pick up the print media.

2.2.2 System Layout

FUSER DUPLEX

CASSETTE

2.2.2.1 Feeding
It is consists of a basic cassette, an MP tray for supplying different types of media (envelope, label, special paper) duplex unit, and parts related to paper transferring.

1) Separation method

Separate it from the friction pad mounted to the center of the cassette.

2) Basic cassette

It takes a center loading method and applies 'friction pad separating method.' Both the side guide and the rear guide can be adjusted for for various types of papers from A5 to legal size paper. It has a paper existence sensing function (Capacity: 250 sheets of general paper), paper arranging function, various size papers accepting function, SCF paper path function, and displaying function of paper remaining amount. In the front side, there is a paper level indicator.

3) Pick-up roller

It has functions such as a paper pickup function, driving control function, paper feeding function, and removing electronic static function.

4) Registration roller

It has a paper arranging function, paper transferring function, paper detecting function, jam removing function, and so on.

5) MP tray

It has a paper arranging function, paper transferring function, jam removing function, and so on. It uses rubbing pad method to feed 1 sheets of general papers and 1 envelops.

6) Duplex unit

It has paper transferring function, paper guide function, jam removing function, paper sensing function, and main board supporting function. It is designed for basic attachment, and the duplex feeding takes a side feeding method. Usable papers are A4, letter, and legal size paper. For removing a jam occurred in a front part, it is designed to open a cassette and a guide. It is designed to open a rear cover to remove a jam in a rear part.
7) SCF (Second Cassette Feeder)
It is the same method with the main cassette, and the capacity is 250 sheets. It has a separate driving mechanism. It is designed for a common use with a main cassette.

2.2.2.2 Transfer

A transfer roller transfers toner on an OPC drum to the paper. Life span: Print over 50,000 sheets (In 16~27 )

2.2.2.3 Driver Ass'y

By driving the motor, the system takes power. It consists of a main motor for feeding fuser and duplex reverse turn. - Main Motor : DC 24V, Rated RPM : 2170rpm

2.2.2.4 Fuser

It is consisted of a heat lamp, heat roller, pressure roller, thermistor and thermostat. It sticks the toner on a paper by heat and pressure to complete the printing job. - Halogen lamp : 750 Watt 5%

1) Thermostat

When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over-heating. - Non-Cotact type Thermostat

2) Heat roller

The heat roller transfers the heat from the lamp to apply a heat on the paper. The surface of a heat roller is coated with Teflon, so toner does not stick to the surface.

3) Pressure roller

A pressure roller mounted under a heat roller is made of a silicon resin, and the surface also is coated with Teflon. When a paper passes between a heat roller and a pressure roller, toner adheres to the surface of a paper permanently.

4) Items for safety

Protecting device for overheating - 1st protection device: Hardware cuts off when overheated - 2nd protection device: Software cuts off when overheated - 3rd protection device: Thermostat cuts off main power. Safety device - A fuser power is cut off when a front cover is opened - Maintain a temperature of fuser cover's surface under 80(C for user, and attach a caution label at where customer can see easily when customer open a rear cover.
2.2.2.5 LSU (Laser Scanner Unit)
It is the core part of the LBP which switches from the video data received to the controller to the electrostatic latent image on the OPC drum by controlling laser beam, exposing OPC drum, and turning principle of polygon mirror. The OPC drum is turned with the paper feeding speed. The /HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror, and the signal is sent to the controller. The controller detects the /HSYNC signal to adjust the vertical line of the image on paper. In other words, after the /HSYNC signal is detected, the image data is sent to the LSU to adjust the left margin on paper. The one side of the polygon mirror is one line for scanning.

2.2.2.6 Print Cartridge

By using the electronic photo process, it creates a visual image. In the print cartridge, the OPC unit and the toner cartridge unit are in a body. The OPC unit has OPC drum and charging roller, and the toner cartridge unit has toner, supply roller, developing roller, and blade (Doctor blade) - Developing Method: Non-contacting method - Toner : Non magnetic 1 component pulverized type toner - The life span of toner : 2,000 or 5,000 pages (LSA Pattern/A4 standard) - Toner remaining amount detecting sensor : Yes - OPC Cleaning : Cleaning blade type - Management of disusable toner : Collect the toner by using Cleaning Blade - OPC Drum protecting Shutter : No - Classifying device for toner cartridge : ID is classified by CRUM. except for initial cartridge.

Length of Power Cord : 1830 50mm Power Switch : Use Feature - Insulating Resistance : 100 or more (at DC 500V) - Withstanding Voltage : Must be no problem within 1 min. (at 1000V-LV model / 1500Vac-HV model,10mA) - Leaking Current : under 3.5mA - Running Current : under 40A PEAK (AT 25 , COLD START) under 60A PEAK (In other conditions) - Rising Time : within 2Sec - Falling Time : over 20ms - Surge : Bi-Wave 3kV - Normal, 6KV - Common Environment Condition 40 - Operating temperature range : 0 - Maintaining temperature range : -- Preserving Humidity Condition : 30% 90% RH - Operating atmospheric pressure range : 1atm EMI Requirement : CISPR ,FCC, CE, MIC, C-Tick, Safty Requrement :IEC950 UL1950, CSA950, C-UL,NOM, TUV, Semko, Nemko, iK, CB, CCC(CCIB), GOST, EPA, Power Save
2.2.3.2(c) FUSER AC POWER CONTROL
Fuser(e-coil) gets heat from AC power. The AV power controls the switch with the Triac, a semiconductor switch. The ON/OFF control is operated when the gate of the Triac is turned on/off by Phototriac (insulting part). In other words, the AC control part is passive circuit, so it turns the heater on/off with taking signal from engine control part. When the HEATER ON signal is turned on at engine, the LED of PC501 (Photo Triac) takes the voltage and flashes. From the flashing light, the Triac part (light receiving part) takes the voltage, and the voltage is supplied to the gate of Triac and flows into the Triac. As a result, the AC current flows in the e-coil, and heat is occurred. On the other hand, when the signal is off, the PC501 is off, the voltage is cut off at the gate of Triac, the Triac becomes off, and then the e-coil is turned off. Triac (Q501) feature : 24A-LV model / 16A-HV model, 600V SWITCHING Phototriac Coupler (PC501) - Turn On If Current : 15mA 50mA(Design: 16mA) - High Repetive Peak Off State Voltage : Min 600V

2.2.3.3 Engine F/W

2.2.3.3(a) Control Algorithm
Feeding If feeding from a cassette, the drive of the pickup roller is controlled by controlling the solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from a manual feeder, decide to insert the paper according to the operation of the Regi sensor, and by driving the main motor, insert the paper in front of the feed sensor. While paper moves, occurrence of Jam is judged as below. ITEM Description - After picking up, paper cannot be entered due to paper is not fed. - After picking up, paper entered but it cannot reach to the feed sensor in certain time due to slip, etc. - After picking up, if the feed sensor is not on, re-pick up. After re-picking up, if the feed sensor is not on after certain time, it is JAM 0.

* It is a status that the leading edge of the paper doesnt pass the feed sensor.
- Even though the paper reaches to the feed sensor, the feed sensor doesnt be ON.
* It is a status that the leading edge of the paper already passes the feed sensor.
- After the leading edge of the paper passes the feed sensor, the trailing edge of the paper cannot pass the feed sensor after a certain time. (The feed sensor cannot be OFF) - After the leading edge of the paper passes the feed sensor, the paper cannot reach the exit sensor after certain time. (The exit sensor cannot be ON)
* The paper exists between the feed sensor and the exit sensor.
JAM 2 DUPLEX JAM 1 DUPLEX JAM 0
- After the trailing edge of the paper passes the feed sensor, the paper cannot pass the exit sensor after certain time. - After the trailing edge of the paper passes the exit sensor, the leading edge of the paper cannot reach the Regi sensor after certain time. - After the leading edge of the paper passes the Regi sensor, the leading edge of the paper cannot reach the feed sensor after certain time.

2.2.3.3(b) Driver

By gearing, the main motor drives the rollers such as feeding roller, developing roller, fuser roller, and exiting roller. The BLDC motor is controlled for the such acceleration section and steady section. The BLDC main motor is operated by the BLDC clock and the enable signal.

2.2.3.3(c) Transfer

The charging voltage, developing voltage and the transfer voltage are controlled by PWM (Pulse Width Modulation). The each output voltage is changeable due to the PWM duty. The transfer voltage admitted when the paper passes the transfer roller is decided by environment recognition. The resistance value of the transfer roller is changed due to the surrounding environment or the environment of the set, and the voltage value, which changes due to the environments, is changed through AD converter. The voltage value for impressing to the transfer roller is decided by the changed value. Each voltage value is controlled according to 3.3.4.2 Timing Chart.

2.2.3.3(d) Fusing

The temperature change of the heat rollers surface is changed to the resistance value through the thermistor. By converting the voltage value, which impressed to the resistance, to the digital value through the AD converter, the temperature is decided. The AC power is controller by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of controlling range while controlling the fusing, the error stated in the below table occurs. Lamp Method

2) Error Code

When detecting the malfunction, the printing is stopped to indicate error code. Code 60, 62, 68 State Fuser Error Description The error in the fuser occurred. There is a short circuit in the thermistor and the thermostat while printing, Low Temperature Error occurs. 60: Open Fuser Error 62: Low Heat Error 68: Over Heat Error The Printer Cover is open. The Toner Cartridge not installed, No paper in the paper cassette. The front part of paper is jammed between pickup unit and Feed sensor. The front part of paper is jammed between the Discharge sensor and Feed sensor. The front part of paper is jammed just after passing through the discharge sensor. LSU Scanner Motor not ready. Hsync signal not output.
Cover Open CRU Error No Paper Paper Jam 0 Paper Jam 1 Paper Jam 2 LSU Not Ready LSU Not Ready
4.1.6.3 Self Diagnostic Mode
If Error code occurs due to malfunction of the printer, perform Self Diagnostic Mode to solve the problem. The printer works only in the self-test mode to solve the malfunction problem. To enter the self-test mode, turn the power on pressing the buttons of [Down], [Shift] and [Stop] at the same time. Release the button within 2 or 3 seconds if 78 shows in the DCU. If 00 shows in the DCU, press the button [Up] or [Shift] to select the self+test , and press the button of [Enter] to operate. To stop, press the button of [shift] and [Enter] together. Code 00 Main Motor Operating System Only the main motor is in operation. Main High Voltage On(THV-) -1400 voltage output by MHV terminal.
Caution : High voltage probe should be used.

Description

Transfer High Voltage(-)On(THV-) -1000 voltage output by MHV terminal. Caution : High voltage probe should be used.
Transfer High Voltage (+)Reference on (THV +) +1300 voltage output by MHV terminal.
DEV/supply High Voltage : DEV/Supply High Voltage Test. The left one of the three LEDs in the self-test panel is on when DEV high voltage Supply high voltage output by each HV terminal. Press the [Up] button to switch the voltage. The middle and right one of the three LEDs are on and -350 voltage output by DEV HV terminal.
LSU Operating System The scanning motor of LSU is in operation, the right LED of the three buttons on. Press the [Up] button to Check LD. LD is functioning and the middle button is on. If the LD is normal, all LEDs are on. Pickup clutch on The Solenoid in the printer is in operation. To stop the operation, Press the button [shift] and [Enter] together.

Code 07

Description Paper Empty Sensor Test : If activate the Actuator of the PEMPTY Sensor, the left and right of the three LEDs are on. Paper Empty Sensor ON/OFF 1st LED ON/OFF Feed & Exit Sensor Test Test the Feed sensor and Discharge sensor in the same way as '07'. Feed Sensor ON/OFF 2nd LED ON/OFF Exit Sensor ON/OFF 3rd LED ON/OFF Cover Open Sensor Test Test the Cover Open Sensor in th same way as code '07 Cover Open Sensor ON/OFF1st LED ON/OFF Fuser Test If the [Enter] button pressed, the right LED is on and temperature of the fuser is up to READY Mode. If the [Up] button pressed, the middle LED is on and temperature of the fuser is up to Printing Mode. If you press the button once more, the left LED is on and temperature of the fuser is up to overheat Mode. Hot Burn Test If the [enter] button pressed, the printer is continuously printing without detection. Turn the power off to stop operation. Cleaning Mode Print Mode Print the paper to clean the OPC Drum in the Cartridge. THV(+) TRIGGER. ALL HV : All high voltage output by each HV terminal and LSU and the fan is in operation. In this mode, electronic resistance of transfer roller and high voltage is detected. Fan Test : Indicates the function of the Fan, same method of the code 07. Manual Pickup Test : Indicates the function of th Manual Pickup, same method of the code 07. Manual Sensor Test : Indicates the function of the Manual Sensor, same method of the code 07.

No. 04

Function Motor MHV THV(-) THV(+) DEV
Enter Motor Run Mhv On Thv Negative On Thv On Supply Dev On

Up/Down

Stop Motor Stop Mhv Off Thv Negative Off Thv Off DEV Dev Off
- 1300V -1000V +1300V -350V

0 : -550V

0 : -350V

LSU PickUp PEmpty

LSU Run Pickup On

LSU Stop Pickup Off

Paper Empty

Sensor

Cover Fuser Hot Burn Clean Print Thv Reference PTL FAN Manual Pic kUp Manual PTL On Fan On Manual Pickup On Fuser On Hot Burn On Clean Printing

Cover Open Fuser Off

adequate
high PTL Off Fan Off Manual Pickup Off PTL No

Manual Sensor

4.1.6.4 Self Test Button
If the Self-Test button pressed, vertical lines are printed. Turn the power on while pressing this button, '89' shows in the DCU and the printer is warming up. After warmingup the printer is in READY Mode, and '88' shows in the DCU. In this mode, without any detection, the printer begins printing(trial printing and data from the PC). It is convenient to use this mode when the engine malfunction is detected in the control board.

Replace the engine board.

6) Cover Open

Description: The ERROR lamp is on even when the print cover is closed.
1. The hook lever in the front cover or Guide rear may be defective.
Replace the hook lever, if defective.
2. Check the connector and circuit of the cover switch department in the Main Control board.
1. Check the insertion of the Cover Open S/W Connect. 2. Replace the Main Control board or Cover Open S/W.
7) No error LED when the cover is open
Description: The Error LED does not come on even when the printer cover is open
1. Check the connector and circuit of the cover switch department in the Main Control board. Perform DCU test
8) Defective motor operation
Description: Main motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'.

9) No Power

Description: When system power is turned on, all lamps on the operator panel do not come on.
1. Check if the power input and SMPS output are normal.
Replace the power supply cord or SMPS.
2. Check the inferiority of LED-Panel or LCD window on the front-cover if the OP panel does not appear after normal warming-up.
1. Replace the control board. 2. Replace the OP panel.
10) Vertical Line Getting Curved
Description: When printing, vertical line gets curved.
1. If the supply of +24v is unstable in the Main Control board linking with LSU, check drive by DCU test: LSU Check.

Replace LSU.

2. Chect the Deve PBA in the Toner Cartridge.
1. Replace theToner Joint PBA. 2. Replace the MainPBA.
4.2.5 Toner Cartridge Service
It is not guaranteed for the default caused by using other toner cartridge other than the cartridge supplied by the Samsung Electronic or caused by non-licensed refill production.
4.2.5.1 Precautions on Safe-keeping of Toner Cartridge
Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.
4.2.5.2 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.
4.2.5.3 Distinguish function for choice cartridge
Distinguish function for choice cartridge
An EEP ROM is mounted to a cartridge for distinguishing a choice toner cartridge. Items written in below are detected by checking up memory information. If the data of the EEP ROM is broken, it cannot be detected. 1) Detecting existence of a toner cartridge: It detects whether a toner cartridge is mounted or not. 2) Detecting a serial number of a toner cartridge. 3) Detecting a toner cartridge supplying company: If it is not Samsungs, it is not operated. 4) Detecting an OPC rotating counter: It detects the life span of an OPC drum.

4. Check if the printer cable is directly connected to peripheral devices
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) 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.
1. Secure more space of the hard disk.
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. Printing error occurs even if there is enough space in the hard disk.
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. Check the parallel-port-related items in the CMOS Setup.
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. Reboot the system to print.
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.

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.
1. Set up the parallel port in the CMOS SETUP.
Select SPP(Normal) or ECP LPT Port the among ECP, EPP or SPP in the CMOS Setup.

2. Printer Driver Error.

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. 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.)
Delete the unnecessary files to secure enough space of the hard disk and start printing job again.

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).
1. Insufficient space of the hard disk in the directory assigned for the basic spool.
Delete the unnecessary files to provide more space to start printing job.
2. If the previous printing error not solved.
If there are some files with the extension name of ****.jnl, Delete them and Reboot the Windows to restart printing job.
3. When expected to collide with other program.
Shut down all other programs except the current one, if possible.
4. When an application program or the printer driver is damaged.
Delete the printer driver completely and reinstall it.
5. When some files related to OS are damaged or virus infected.
After rebooting the computer, check for viruses, restore the damaged files and reinstall the program to do the printing job.
6. Memory is less than suggested one.
Add up enough memory to the PC.
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.
ExplodedView and Parts list
5. Exploded Views and Parts List
5.1 Main 5.2 Top Cover 5.3 Cover Ass'y 5.4 Front Cover 5.5 Rear Cover 5.6 Frame 5-2 5-4 5-6 5-8 5-10 5-12 5.7 Main Drive 5.8 Rear Guide 5.9 Fuser 5.10 Duplex Unit 5.11 Cassette 5.12 SCF 5-17 5-19 5-21 5-23 5-25 5-27

JC61-02226A JC33-00026A 6003-000301 JC31-00085A JC61-02232A JC63-01571A JC61-02238A JC63-01615A JC92-01439A JC61-02312A JC61-02311A JC61-02310A JC66-00875A 6044-001005 JC39-00826A JC65-00019A JC92-01829A JC61-01172A JC66-00824A JC66-00830A 6107-001163 JC66-40209A JC72-41191B JC61-02308A JC66-01662A JC63-01572A JC63-01573A JC62-00461A JC61-40001A JC70-00546A JC70-00547A JC70-00304A JC66-00387A JC66-01647A JC66-01646A 6107-001164 0604-001095 JC39-00824A JC61-02309A JC66-01022A JC66-01846A JC61-02303A JC63-01743A BRACKET-FEED SOLENOID PCIKUP SCREW-TAPTITE FAN-DC HOLDER-POWER SHIELD-POWER_SWITCH PLATE-POWER CAP GROUND-SCF PBA LED-PANEL FRAME-LSU-HOLDER-R FRAME-LSU-HOLDER_L FRAME-EXIT_HIGH GEAR-M-FUSER IDLE 1 RING-CS CBF HARNESS-LSU SW&FAN TERMINAL-CRUM PBA SUB-TERMINAL HOLDER-M-EXIT F/DOWN ROLLER-EXIT MAIN ROLLER-EXIT FR SPRING CS GEAR-M-EXIT PMO-BEARING SHAFT SUPPORT-ROLLER ROLLER-EXIT F/DOWN SHIELD-CONTROLLER SHIELD-SMPS INSULATION-SMPS FOOT-ML80 ADJUST-MANUAL L ADJUST-MANUAL R ADJUST RACK-M-MANUAL GEAR-RACK_PINION ACTUATOR-FEED ACTUATOR-DUPLEX SPRING-TS PHOTO INTERRRUPTER CBF HARNESS-HVPS FRAME-DUPLEX_PATH ROLLER-M-IDLE SCF SHAFT-DUP_ROLLER GUIDE-FRAME_DUPLEX SHEET-GUIDE_DUP_PATH
SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SNA SNA SNA SNA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA
5.6-82 5.6-83 5.6-84 5.6-85 5.6-86 5.6-87 5.6-88 5.6-89 5.6-90 5.6-91 5.6-92 5.6-93 5.6-94 5.6-95 5.6-96 5.6-97 5.6-98 5.6-99 5.6-100 5.6-101 5.6-102 5.6-103 5.6-104 5.6-105 5.6-106 5.6-107 5.6-108 5.6-109 5.6-110 5.6-111 5.6-112 5.6-114 5.6-115
JC72-00382B JC66-00598A JC66-01648A JC63-01617A JC63-00527A JC75-00095A JC61-02268A JC63-01676A JC61-02306A JC61-02400A JC61-02305A JC61-00604B JC61-02307A JC61-02196A JC61-02236A JC66-01654A JC61-00585A JC61-70958A JC61-00914A JC72-00984A JC61-70932A JC72-00985A 6107-001370 JC61-02468A JC65-00033A JC61-00588A JC61-02304A JC61-00553A JC61-02231A JC66-01649A 6107-001172 JC97-03067A JC61-00424A PMO-BUSHING FEED ROLLER-FEED ACTUATOR-EMPTY GROUND-PICK_UP SHEET-BRUSH MEC-BRUSH PICK UP BRACKET-COVER FRONT GROUND-BRUSH PICK UP GUIDE-PAPER GUIDE FRONT PAPER GUIDE-TR_RIB PLATE-E_SAW GUIDE-TR GUIDE-INPUT PLATE EARTH TRANSFER SHAFT-FEED IDLE BUSH-M-FEED IDLE SPRING ETC-TR PLATE-P-PUSH BUSHING PMO-PLATE GUIDE DEVE_L SPRING ETC-GUIDE DEVE PMO-PLATE GUIDE DEVE_R SPRING TR BUSH-TR_L TERMINAL SPRING TR PMO-BUSHING_TR(L) GUIDE-HOLDER_TR

Varistor

FAN LSU

FUSER ON

Thermistor

Regist Clutch

PickUp Clutch

PaperExit Sensor

MT BLDC

ThermoStat

FUSER Unit

Main Motor

Main S/W

24V S G ND P_M OT_EN LSU_RDY P_M OT_CLK
LD_EN LD_P OWER1 G ND HSY NC1 LSU_SH1 G ND VDO1_m inus V DO 1_pl us G ND LS U_5V
24V S F US E R_ON G ND 24V G ND 24V G ND 24V G ND 24V G ND 5V G ND 5V G ND 5V
G ND G ND PWM _DEV _DC P WM _M HV THV _RE AD P WM _M HV nT HV _EN PWM _THV 5V 24V S 24V S G ND G ND 24V 24V

HVPS MAIN

24VS CN1 CN10 CN4

HVPS _IF SMPS _IF LSU_IF

Front Cover Micro Switch DEV MHV VCLK 12MHz

LSU S/ W & FA N

6.2 Connection Diagram
Rear Cover Micro Switch MCLK 12MHz

FAN_MAIN

FAN_MAIN NC 24VS
CN6 THER & P_EXIT SENSOR CN2 MAIN MOTOR & PICKUP, REGI CLUTCH CN13 SENSOR

USB 2.0 Isp1582

USB_IF

FAN MAIN

CN9 NETWORK_IF

C R U M

CN14 SCF_IF

P ICK UP _CLT

RE GI_CLT
M OT_DIR P WM_M OT M OT_REA DY M OT_EN NC M OT_BRE AK GND GND 24V S 24V S

3. 3V GND DUX_S ENS

3. 3V GND RE GI_S ENS

THE R1 THE R2

3. 3V GND P AP ER_E XI T

SOL Thermistor

EXIT Sensor
EMPTY REGI_DUP FEED Sensor Sensor Sensor

3. 3V GND FE ED_S ENS

KEYCLIK LED_T LED_E LED_R GND

LSU_5V 5V

LSU INTERLOCK S/W

FAN_LSU 24VSN

NOR Flash S29GL320M (4MB X 2EA)
3. 3V DCU _DATA DCU _CLK GND

SPGPv3

EEPROM M24C32W X 2EA

S D DRUM

3.3V DEV _DIO DEV _CLK GND

Network BCM5241

GND NC RD 3.3V RD + TD3.3V TD+ 3.3V P /U LED2 3.3V P /U LED1

VBUS DM DP GND

SCF (Option)
24VS 3.3V 3.3V SCF _RXD nSCF _DET SCF _TXD GND GND GND

Reference information

This chapter contains the tools list, list of abbreviations used in this manual, and a guide to the location space required when installing the printer. A definition of tests pages and Wireless Network information definition is also included.
7.1 Tool for Troubleshooting
The following tools are recommended safe and easy troubleshooting as described in this service manual.
DCU (Diagnostic Control Unit)