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Panasonic KX-MB283BR, Service Manual

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189

KX-MB283BR

14.3.7.

FIXING

On the process of the transfer, the transferred toner is weakly attached on the paper. Fixing means the process to fix the toner on
the paper permanently. The fixing part melts the toner at the high temperature using the halogen heater. The toner is fixed on the
paper by the heat and pressure through the fixing part with the image. The surface of the heat roller is rosined by Teflon and lubri-
cated to prevent from attaching the toners. The press roller is made of silicon, and its spring compresses the melted toner.

Fixing Part

The fixing part becomes high temperature, so the thermistor and the two thermostats are provided.

1. Thermistor

The thermistor touches the heat roller and check the temperature to feed back to the control circuit. The surface temperature
should be kept 195

°

C while printing.

2. Thermostat

The thermostat is located near the heat roller, and it turns OFF the power when the temperature around the thermostat
becomes over 160

°

C.

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Summary of Contents for KX-MB283BR

Page 1: ...2007 Panasonic Communications Co Ltd All rights reserved Unauthorized copying and distribu tion is a violation of law ORDER NO KMF0711134CE Multi Function printer KX MB283BR for Brazil...

Page 2: ...prints out 80 10 3 HISTORY Example of a printed out list 81 11 Troubleshooting Guide 83 11 1 USER RECOVERABLE ERRORS 83 11 2 TROUBLESHOOTING DETAILS 85 11 3 DOCUMENT JAMS AUTO DOCUMENT FEEDER 144 11...

Page 3: ...service manual so as to pre vent fires injury or electric shock which can be caused by improper repair work 6 When repair services are provided neither the products nor their parts or members shall be...

Page 4: ...ections of the unit supplied with AC power by the AC power cord are live Never disassemble the unit for service with the AC power supply plugged in CAUTION AC voltage is supplied to the primary side o...

Page 5: ...lash if it is heated much higher than its melting point approximately 1100 F 600 C If you must use Pb solder on a PCB manufactured using PbF solder remove as much of the original PbF solder as possibl...

Page 6: ...of explosion if the battery is replaced incorrectly Replace only with the same or equivalent type recommended by the manufacturer Dispose used batteries according to the manufacturer s instructions T...

Page 7: ...r Legal 208 mm A4 202 mm Transmission Time Approx 4 s page ECM MMR Memory transmission Scanning Density Scanning resolution Up to 600 1 200 dpi Optical Up to 9 600 9 600 dpi Interpolated Copy resoluti...

Page 8: ...8 KX MB283BR 4 General Introduction 4 1 OPTIONAL ACCESSORIES Model No Description Specifications KX FAT92A Replacement toner cartridge 1 toner cartridge KX FAD93A Replacement drum unit 1 drum unit...

Page 9: ...9 KX MB283BR 4 2 Translation Lists 4 2 1 Error Message Display...

Page 10: ...function up to 99 copies Enlargement and reduction Collate 64 Level halftone 5 2 HARDWARE REQUIREMENTS FOR MULTI FUNCTION SOFTWARE To use Multi Function Station on your computer the following are req...

Page 11: ...11 KX MB283BR 6 Technical Descriptions 6 1 CONNECTION DIAGRAM...

Page 12: ...d reflecting the laser beam against polygon SENSORS Composed of 2 switches and 5 sensors POWER SUPPLY BOARD Supplies 24V and 7V to the Main unit and controls the Heat Lamp HIGH VOLTAGE POWER SUPPLY BO...

Page 13: ...500 CN501 CN502 CN504 CN505 CN511 CN508 CN507 CN514 CN506 CN56 CN61 CN62 CN60 CN59 CN2 CN1 DC motor Resist Solenoid Pick up Solenoid HVU FAN motor left Hole IC Pick Up Sensor Toner Sensor CN64 CN67 CN...

Page 14: ...er I F Print I F AFE IC503 IC400 IC300 Main Board FB transit Board CISunit LSU CN300 SDRAM I F CN750 LAN USB USB I F CPU DAA IC100 IC101 PHY LAN I F DSP JBIG CN100 IC750 TEL LINE PC PC print CN59 CN51...

Page 15: ...00 IC101 PHY LAN I F DSP JBIG CN100 IC750 1 An analog image data is output from CISunit to IC503 IC503 decode the analog data to digital data and output to IC300 Scanner I F in IC300 process image dat...

Page 16: ...DRAM DATA BUS 8 AA02 SDMD9 I O 3 3V SDRAM DATA BUS 9 AA03 SDMA7 O 3 3V SDRAM ADDRESS BUS 7 AA04 SDMA6 O 3 3V SDRAM ADDRESS BUS 6 AA23 VDD1 2 1 2V POWER SUPPLY AA24 AFERST O 3 3V NCU INTERFACE AA25 RIN...

Page 17: ...X_CLKI I 3 3V ETHERNET INTERFACE AE07 TXD2 O 3 3V ETHERNET INTERFACE AE08 RX_CLKI I 3 3V ETHERNET INTERFACE AE09 RXD3 I 3 3V ETHERNET INTERFACE AE10 MDC O 3 3V ETHERNET INTERFACE AE11 NC NOT USED AE12...

Page 18: ...FRMA16 O 3 3V FLASH MEMORY ADDRESS BUS 16 B23 FRMA19 O 3 3V FLASH MEMORY ADDRESS BUS 19 B24 FRMA21 O 3 3V FLASH MEMORY ADDRESS BUS 21 B25 VSS GND GND B26 DOTPLLVSS GND GND C01 AFEADC3 I 3 3V NOT USED...

Page 19: ...LK O 3 3V SCANNER INTERFACE F04 VDD1 2 1 2V POWER SUPPLY F23 PIO24 I 3 3V LSU INTERFACE F24 PIO61 O 3 3V OUTPUT PORT SPMUTE F25 PIO60 O 3 3V NOT USED F26 PIO3 O 3 3V LSU INTERFACE G01 SDMD18 I O 3 3V...

Page 20: ...PORT CNGMUTE N01 SDMD28 I O 3 3V SDRAM DATA BUS 28 N02 SDMD29 I O 3 3V SDRAM DATA BUS 29 N03 SDBA0 O 3 3V SDRAM BANK ADDRESS 0 N04 VDD1 2 1 2V POWER SUPPLY N11 VSS GND GND N12 VSS GND GND N13 VSS GND...

Page 21: ...5 PIO1 O 3 3V OUTPUT PORT EXTRLY U26 PIO7 O 3 3V NOT USED V01 SDMD4 I O 3 3V SDRAM DATA BUS 4 V02 SDMD5 I O 3 3V SDRAM DATA BUS 5 V03 SDCKE O 3 3V SDRAM CLOCK ENABLE V04 SDMA12 O 3 3V SDRAM ADDRESS BU...

Page 22: ...Backup Circuit Operation When the power switch is turned ON power is supplied to the RTC inside IC300 At this time the voltage at pin AD4 of the IC300 is 3 3V When the power switch is turned OFF the...

Page 23: ...C300 goes to a low level and the transistor Q518 turns on This applies voltage to the CIS The CIS is driven by each of the CCDSH CCDCLK signals output from IC300 and the original image illuminated by...

Page 24: ...l 2 Clock signal Output pin Pin A12 Output Signal Pulse Pulse frequency approx 1 9KHz at normal printing speed Pulse frequency approx 0 5KHz at half printing speed This signal is also inverted by tran...

Page 25: ...put Signal L When this signal is inverted by transistor Q502 and becomes H motor recognize this signal as stop signal 2 Brake signal Output pin Pin C12 Output Signal L When this signal is inverted by...

Page 26: ...otor current Vref voltage of each motor driver is controlled When Vref voltage is high motor current is increased and the voltage is low motor current is reduced In order to control Vref voltage PWM p...

Page 27: ...he motor coil A 1 step rotation of this motor feeds 0 021mm of CIS unit 3 Circuit Diagram 6 5 2 3 ADF AUTO DOCUMENT FEEDER MOTOR DRIVE CIRCUIT 1 Functions This motor functions for main operations incl...

Page 28: ...KX MB283BR 6 6 TIMING CHART AND WAVE FORM OF SCANNER MOTORS Control sequence and waveform of both FB and ADF motor are almost same 6 6 1 NORMAL 1 2 PHASE EXCITATION HALF STEP 1 Timing chart 2 Wave fo...

Page 29: ...29 KX MB283BR 6 6 2 FLAT TORQUE 1 2 PHASE EXCITATION HALF STEP 1 Timing chart 2 Wave form...

Page 30: ...30 KX MB283BR 6 6 3 W 1 2 PHASE EXCITATION QUARTER STEP 1 Timing chart 2 Wave form...

Page 31: ...to radiate the heat inside of the unit 6 7 1 LEFT SIDE FAN FAN1 When the output of pin A11 of IC300 becomes high level or pulse Left side FAN FAN1 is activated During the FAN rotation the pulse signal...

Page 32: ...e FANs with full speed constant high level are output from A11 and D11 of IC300 Then Q512 Q510 and Q519 Q520 are all turned on So 24V are output from collectors of Q510 and Q520 Since each FAN consume...

Page 33: ...and Pick up Solenoid These solenoids are designed to be driven 24V The diodes protect transistors from reverse generated voltage when solenoids are turned off RESISTANCE MODE IC300_T26 Solenoid ON Hig...

Page 34: ...34 KX MB283BR 6 9 LSU Laser Scanning Unit SECTION...

Page 35: ...35 KX MB283BR...

Page 36: ...p sensor Pickup Fan2 PCB SW50 PAPER JAMMED CHECK REAR CVR WRONG PAPER PRESS START Exit sensor Fuser PCB PS50 PAPER JAMMED Read position sensor Sensor PCB PS53 CHECK DOCUMENT Resistance Manual paper se...

Page 37: ...whether Rear Cover is opened or closed When there is a recording paper at the position of the switch the input signal of IC300 AE20pin becomes low level When there is no recording paper at the positio...

Page 38: ...e of the FB cabinet 6 10 4 READ POSITION SENSOR This sensor detects the front edge of the document When the front edge of the document is detected the shelter plate closes the sensor light So the phot...

Page 39: ...F20pin becomes high level 6 10 6 PRINT TIMING SENSOR This sensor detects whether the recording paper is at the printing position When the recording paper is detected the shelter plate lets the sensor...

Page 40: ...the photo transistor turns on and input signal of IC300 AF23pin becomes low level 6 10 8 TOP COVER SENSOR The Switches detect whether the top cover is open or closed When the top cover is closed the s...

Page 41: ...gnet put on the pendulum of Mixing Paddle The pendulum is pushed up by the Mixing Paddle then it falls down by its own weight The rotation speed of paddle is set slower than the one of pendu lum which...

Page 42: ...imes TONER LOW signal at only printing It is not executed at 2 Toner full can be judged by continuous 3 times TONER FULL signal at initialization It is not executed at printing 3 In the ordinal operat...

Page 43: ...43 KX MB283BR 6 10 9 2 Drum Detection...

Page 44: ...x 5 key matrix is executed by hardware scanning 2 LED AUTO ANSWER LED ON OFF port LED6 IC1 2pin COPY MODE LED ON OFF port LED5 IC1 41pin SCAN MODE LED ON OFF port LED2 IC1 36pin KIN0 KIN1 KIN2 KIN3 K...

Page 45: ...ks only for writing the ASCII code from the data bus D4 D7 V0 is supplied for the LCD drive R118 and R117 are density control resistors Consequently in this unit the timing positive clock is generated...

Page 46: ...CHG OUTPUT GRID BIAS is generated by the current flowing in the GRID circuit via charge wire and GRID Charge CHG Grid Developing DC Developing AC Transfer TRA Transfer TRA Output Characteristics Const...

Page 47: ...Hz wave of developing AC voltage is output from DEV OUTPUT This voltage is overlapped with developing DC voltage and output as AC voltage that includes the development DC voltage 6 13 5 TRA BIAS Trans...

Page 48: ...off by the HTRCTL signal IC300 AD19pin through the photo triac PC2 and the triac SCR51 And two thermostats are set on the AC line as the safety devices 1 Control at Printing a After the printing sign...

Page 49: ...49 KX MB283BR...

Page 50: ...FB 85 200 C8 169 92 5C 2 251 FB 86 199 C7 170 91 5B 3 251 FB 87 198 C6 171 90 5A 4 251 FB 88 197 C5 172 89 59 5 251 FB 89 196 C4 173 88 58 6 251 FB 90 195 C3 174 87 57 7 250 FA 91 193 C1 175 86 56 8 2...

Page 51: ...55 229 E5 139 129 81 223 48 30 56 228 E4 140 127 7F 224 48 30 57 228 E4 141 126 7E 225 47 2F 58 227 E3 142 125 7D 226 46 2E 59 226 E2 143 123 7B 227 46 2E 60 225 E1 144 122 7A 228 45 2D 61 224 E0 145...

Page 52: ...3F 86 18 12 7 174 AE 40 61 3D 87 18 12 6 171 AB 41 60 3C 88 17 11 5 168 A8 42 58 3A 89 17 11 4 166 A6 43 57 39 90 16 10 3 163 A3 44 55 37 91 16 10 2 160 A0 45 54 36 92 16 10 1 158 9E 46 52 34 93 15 0F...

Page 53: ...pped D303 controls no to be a over voltage at 3 3V output when ICs including IC302 break down 1 2V Power Supply descriptions IC305 is Nch FET used Switching Regulator with synchronous rectification sy...

Page 54: ...54 KX MB283BR DC DC Main Board Supply...

Page 55: ...55 KX MB283BR wave form...

Page 56: ...n the AC power is turned on and Q1 begins operating Over Current Limiter O C L The highest drain current of Q1 is limited by a limit current circuit The 24V output is limited by this circuit Over Volt...

Page 57: ...loping When paper is fed from the standard cassette the plunger of solenoid is pulled to drive PICK UP ROLLER STANDARD then the roller starts feeding paper When paper is fed manually first the plunger...

Page 58: ...ck up paper Pick upped paper is separated by SEPARATION ROLLER DOC and SEPARATION RUBBER DOC and then fed by FEED ROLLER DOC After being read by CIS the paper is ejected by ROLLER DOC EJECT DOCUMENT T...

Page 59: ...t Feeder cover 3 Document guides 4 Document cover 5 Output tray 6 Top cover release lever 7 Document entrance 8 Paper input tray 9 Recording paper exit 10 Document exit 7 1 2 Rear view 1 Recording pap...

Page 60: ...60 KX MB283BR 7 2 CONTROL PANEL 1 COPY 2 SCAN 3 COLLATE 4 CONTRAST 5 RESOLUTION 6 ZOOM 7 PAGE LAYOUT 8 SET 9 MENU 10 STOP 11 POWER SAVE 12 Navigator key 13 START...

Page 61: ...ea where the output tray may be easily bumped into The output tray can hold up to approximately 150 sheets of printed paper Remove the printed paper before the output tray becomes full Pull the output...

Page 62: ...t for printing A4 size paper by default If you want to use letter or legal size paper change the setting Refer to USER FUNCTION P 78 1 Pull the paper input tray 1 until it clicks into place then pull...

Page 63: ...loaded over the snubbers 7 5 Insert the paper input tray to the unit lifting the front part of the tray Then push it completely into the unit Note If the paper is not loaded correctly re adjust the pa...

Page 64: ...ter you have started printing with the computer 1 Adjust the width of the guides 1 to the size of the recording paper 2 Insert the paper print side down 2 until the unit grasps the paper and a single...

Page 65: ...der Make a copy of the document using the scanner glass and set the copy Remove clips staples or other fasteners when using the auto document feeder When using the auto document feeder the total heigh...

Page 66: ...quality which may occur from the use of a non Panasonic toner cartridge and drum unit The drum unit contains a photosensitive drum Exposing it to light may damage the drum Once you have opened the pr...

Page 67: ...le pressing down firmly 5 Make sure that the triangles 6 match to install the toner cartridge cor rectly 6 Lift the top cover release lever 7 and open the top cover 8 Note Do not touch the transfer ro...

Page 68: ...68 KX MB283BR 7 Install the drum and toner unit 11 by holding the tabs Make sure that the triangles 12 match to install the drum and toner unit correctly 8 Close the top cover until locked...

Page 69: ...pen the top cover or disconnect the power cord Waste disposal method Waste material should be disposed of under conditions which meet all national and local environmental regulations Caution To preven...

Page 70: ...ULTI FUNCTION STATION Install Multi Function Station CD ROM before connecting the unit to a computer with USB cable If the unit is con nected to a computer with USB cable before installing Multi Funct...

Page 71: ...ddress 3 Next You can change the name of the unit if necessary 4 Click Install then follow the on screen instructions The files will be copied to your computer Important notice If you use Windows XP o...

Page 72: ...d the telephone line cord 1 Power cord Connect to a power outlet 127 V 60 Hz 2 Network Router Network Hub not included 1 Also connect networked computers 3 To the internet 4 LAN cable not included To...

Page 73: ...dots to check if they are normal SET LED TEST Service Mode 5 5 7 All LEDs above the operation panel board flash on and off or are illuminated KEY TEST Service Mode 5 6 1 Checks the button operation I...

Page 74: ...mistor DF 00 high temp FF low temp None None U Pickup Rear Cover U Paper detect No paper T Print timing T Paper detect No paper None None None None None None None None None None PRINT TEST PAT TERN Se...

Page 75: ...75 KX MB283BR 9 1 1 DTMF SINGLE TONE TRANSMIT SELECTION Note After performing this check do not forget to turn the setting off otherwise dialing in DTMF signal will not work 9 1 2 BUTTON CODE TABLE...

Page 76: ...INT TEST PATTERN 1 NO 01 2 NO 06 3 NO 03 These print test patterns are just image printing and differ ent from actual ones When it is required to judge the print quality compare with the printing of a...

Page 77: ...mal programs are those listed in the Operating Instructions and are available to the user The special programs are only those listed here and not displayed to the user In both the User and Service Mod...

Page 78: ...TEXT OK 467 PAGE LAYOUT HOLD 1 DISABLED 2 ENABLED DISABLED OK 468 ZOOM HOLD 1 DISABLED 2 ENABLED DISABLED OK 469 COLLATE HPLD 1 DISABLED 2 ENABLED DISABLED OK Code Function Set Value Default Remote Se...

Page 79: ...Default Remarks 529 Call Service Clear 550 Memory clear Refer to Memory Clear Specification P 79 551 ROM check See P 73 555 Scanner test See P 73 556 Motor test 0 See P 73 557 LED test See P 73 558 L...

Page 80: ...80 KX MB283BR 10 2 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out SAMPLE Note The above values are the default values...

Page 81: ...1 KX MB283BR 10 3 HISTORY Example of a printed out list Note See the following descriptions of this report Item No 1 49 are corresponding to the listed items in DESCRIPTIONS OF THE HISTORY REPORT P 82...

Page 82: ...es multifunction was used for the Printer The number of pages printed If the unit does not have a PC interface NONE will be printed 28 49 Not used 50 Printing number of the drum unit 51 Paddle rotatio...

Page 83: ...paper was not fed into the unit properly Re insert the recording paper The paper input tray is not installed or is not inserted completely Insert the paper input tray into the unit Recording paper wa...

Page 84: ...talled in the manual input tray when trying to copy receive faxes or print reports Remove the recording paper from manual input tray The drum unit s service life is finished Replace the drum unit imme...

Page 85: ...se different expressions for the same problem as they are not a technician or engineer Using your experience test the problem area corresponding to the claim Also returns from a customer or dealer oft...

Page 86: ...ne is the short initialization about 3 seconds and the other is the long initialization about 10 seconds The short initialization makes the unit enter the standby mode The long initialization makes th...

Page 87: ...87 KX MB283BR 11 2 4 SIMPLE CHECK LIST Note Check according to the service code referring to TEST FUNCTIONS P 73...

Page 88: ...rum unit Dirty the pickup roller and the regist roller and the feed roller and the eject roller and the heat roller and the pressure roller Clean the pickup roller and the regist roller and the feed r...

Page 89: ...er Clean or replace the separation rubber Failed the gear Check the gear Failed the solenoid Check the solenoid Failed the engine motor Go to FB Flatbed MOTOR P 121 Failed the pickup sensor lever Chec...

Page 90: ...ent paper path Clean the document paper path Failed the document feed roller Replace the document feed roller Failed the document guide Replace the document guide 3 THE COPIED DATA IS EXPANDED P 113 D...

Page 91: ...ture control after reaching the second sta bilizing temperature 195 C 44h 200 C 40h 05 means that it did not reach the first stabilizing temperature 170 C 5Bh within 30 seconds from detection temperat...

Page 92: ...92 KX MB283BR 11 2 6 1 CALL SERVICE 1 CALL SERVICE 1 means that the polygon motor inside the LSU does not rotate The rotation of the polygon motor is detected by IC300 F23pin NREADY...

Page 93: ...2 CALL SERVICE 2 means that the synchronous signal out of the LSU cannot be detected The synchronous signal out of the LSU is detected by IC 300 G23pin NHSYNC Note As for the Pulse waveform of the ab...

Page 94: ...fuser does not rise up to or exceed a constant temperature The temperature is monitored with the thermistor inside the fuser and detected with the voltage input into IC 300 D19 When Call Service 3 is...

Page 95: ...oes not run or the running of the FAN cannot be detected normally The running of the FAN is detected by IC300 AC20 and W24pin CALL SERVICE 4 is displayed when it detects NG three times continuously Af...

Page 96: ...96 KX MB283BR 11 2 6 5 CALL SERVICE 5 CALL SERVICE 5 means that Engine DC motor s rotation detection signal LD does not become Low...

Page 97: ...97 KX MB283BR 11 2 6 6 CALL SERVICE 6 CALL SERVICE 6 indicates that abnormal charge voltage is output from the high voltage unit...

Page 98: ...98 KX MB283BR 11 2 7 PRINT 11 2 7 1 GHOST IMAGE CROSS REFERENCE HIGH VOLTAGE SECTION P 128 POWER SUPPLY BOARD SECTION P 56...

Page 99: ...99 KX MB283BR 11 2 7 2 DARK OR WHITE VERTICAL LINE Note When wiping the cover glass reflecting mirror use a dry and soft cloth...

Page 100: ...100 KX MB283BR 11 2 7 3 DARK OR WHITE HORIZONTAL LINE CROSS REFERENCE HIGH VOLTAGE SECTION P 128...

Page 101: ...101 KX MB283BR 11 2 7 4 DIRTY OR HALF DARKNESS BACKGROUND CROSS REFERENCE HIGH VOLTAGE SECTION P 128...

Page 102: ...102 KX MB283BR 11 2 7 5 BLACK PRINT CROSS REFERENCE HIGH VOLTAGE SECTION P 128 LSU Laser Scanning Unit SECTION P 34...

Page 103: ...103 KX MB283BR 11 2 7 6 LIGHT PRINT CROSS REFERENCE HIGH VOLTAGE SECTION P 128...

Page 104: ...104 KX MB283BR 11 2 7 7 BLACK OR WHITE POINT 11 2 8 RECORDING PAPER FEED 11 2 8 1 MULTIPLE FEED...

Page 105: ...105 KX MB283BR 11 2 8 2 THE RECORDING PAPER IS WAVED OR WRINKLED...

Page 106: ...106 KX MB283BR 11 2 8 3 SKEW...

Page 107: ...107 KX MB283BR 11 2 8 4 THE RECORDING PAPER DOES NOT FEED CROSS REFERENCE SENSOR SECTION P 117 MOTOR SECTION P 120...

Page 108: ...108 KX MB283BR 11 2 8 5 THE RECORDING PAPER JAM...

Page 109: ...of the Resistance sensor 3 The paper exit was not detected after the registration 4 The paper was longer than the maximum length of the paper exit sensor 5 The Resistance Manual paper sensor or paper...

Page 110: ...110 KX MB283BR 11 2 9 ADF Auto Document Feeder SECTION 11 2 9 1 NO DOCUMENT FEED DOCUMENT JAM and MULTIPLE DOCUMENT FEED CROSS REFERENCE SENSOR SECTION P 117...

Page 111: ...111 KX MB283BR CROSS REFERENCE MOTOR SECTION P 120...

Page 112: ...112 KX MB283BR 11 2 9 2 SKEW ADF...

Page 113: ...113 KX MB283BR 11 2 9 3 THE SENT FAX DATA IS SKEWED CROSS REFERENCE SKEW ADF P 112 11 2 9 4 THE RECEIVED FAX DATA IS SKEWED CROSS REFERENCE SKEW P 106 11 2 9 5 THE COPIED DATA IS EXPANDED...

Page 114: ...114 KX MB283BR 11 2 9 6 BLACK OR WHITE VERTICAL LINE IS COPIED...

Page 115: ...115 KX MB283BR 11 2 10 AN ABNORMAL IMAGE IS COPIED CROSS REFERENCE CIS CONTROL SECTION P 124...

Page 116: ...d on the SOC IC300 initializes and checks each IC The ROM IC402 and SDRAM IC400 are checked If initialization fails for the ICs the system will not boot up In this case please find the cause as follow...

Page 117: ...73 1 NO KEY OPERATION 2 NO LCD INDICATION CROSS REFERENCE TEST FUNCTIONS P 73 11 2 13 SENSOR SECTION Refer to SENSORS AND SWITCHES for the circuit description Perform an SENSOR CHECK to determine if t...

Page 118: ...heck the paper exit sensor PAPER JAMMED 3 Check the read position sensor CHECK DOCUMENT 4 Check the registration manual paper sensor PAPER JAMMED 5 Check the print timing sensor PAPER JAMMED 6 Check t...

Page 119: ...119 KX MB283BR 7 Check the top cover sensor TOP COVER OPEN 8 Check the toner sensor TONER LOW CHANGE DRUM 9 Check the option handset hook switch CROSS REFERENCE SENSORS AND SWITCHES SECTION P 36...

Page 120: ...120 KX MB283BR 11 2 14 MOTOR SECTION 11 2 14 1 ENGINE MOTOR...

Page 121: ...121 KX MB283BR 11 2 14 2 FB Flatbed MOTOR...

Page 122: ...122 KX MB283BR 11 2 14 3 ADF MOTOR...

Page 123: ...123 KX MB283BR 11 2 15 LSU SECTION CROSS REFERENCE LSU Laser Scanning Unit SECTION P 34...

Page 124: ...124 KX MB283BR 11 2 16 CIS CONTROL SECTION...

Page 125: ...125 KX MB283BR CROSS REFERENCE TEST FUNCTIONS P 73...

Page 126: ...output at that moment Avoid mea suring then 7 The unit enters the service mode Then push 628_0 Do not push the SET button 8 Push the SET button High voltage will be added to the unit in the hereafter...

Page 127: ...127 KX MB283BR...

Page 128: ...128 KX MB283BR 11 2 18 HIGH VOLTAGE SECTION 1 Main...

Page 129: ...129 KX MB283BR 2 CHG GRID 3 TRA...

Page 130: ...130 KX MB283BR 3 DEV DC TRA...

Page 131: ...131 KX MB283BR 11 2 19 USB SECTION Troubleshooting 1 Confirmation of the PC settings...

Page 132: ...132 KX MB283BR 2 Confirmation of the main unit...

Page 133: ...am Sequence of normal operation When USB cable from PC is connected to CN300 VBUS voltage goes up to 5V and IC300 recognize the connection with PC Then D becomes about 3V waveform 1 1 The D becomes 0V...

Page 134: ...134 KX MB283BR Waveform of normal operation...

Page 135: ...SECTION LAN Block Diagram LAN Circuit signal waveform Normal Transmitter waveform TD CN750 pin1 TD CN750 pin2 differential voltage Differential probe is used 1 When network equipment is not connected...

Page 136: ...136 KX MB283BR 2 When 100Base TX enabled deviced is connected...

Page 137: ...137 KX MB283BR 3 When 10Base T enabled device is connected...

Page 138: ...t 17 TXD0 Ipd MII Transmit Data Input 18 TXD1 Ipd MII Transmit Data Input 19 TXD2 Ipd MII Transmit Data Input 20 TXD3 Ipd MII Transmit Data Input 21 COL RMII Ipd O MII Collision Detect Output 22 CRS R...

Page 139: ...Ipd O input w internal pull down during reset output pin otherwise Ipu O input w internal pull up during reset output pin otherwise 44 GND Ground 45 XO O XTAL feedback 46 XI I Crystal Oscillator Input...

Page 140: ...140 KX MB283BR 11 2 21 MAIN BOARD SECTION 3 3V TROUBLESHOOTING GUIDE...

Page 141: ...141 KX MB283BR 1 2V TROUBLESHOOTING GUIDE...

Page 142: ...oltage test with standing voltage test intentional short circuit test etc Caution If you find a melted fuse in the unit do not turn on the power until you located and repair the faulty parts except fo...

Page 143: ...REPAIR DETAILS D10 D13 Check for a short circuit in terminal 4 If D10 D13 is short circuit F2 will melt open In this case replace all of the parts D10 D13 F2 D101 If D101 is broken the oscillation ci...

Page 144: ...T FEEDER Caution Do not pull out the jammed document forcibly before lifting the ADF cover 1 Open the ADF cover 1 while holding the document cover 2 2 Remove the jammed document 3 carefully When the d...

Page 145: ...145 KX MB283BR When the document has jammed near the document exit 3 Close the ADF cover...

Page 146: ...1 When the recording paper has jammed inside of the unit The display will show the following Caution Do not pull out the jammed paper forcibly before opening the top cover To prevent injuries be caref...

Page 147: ...manual input tray 1 Pull open the paper input tray 1 2 Open the manual input tray 2 and remove the jammed paper 3 carefully by pulling it upwards Then close the manual input tray 3 Close the paper in...

Page 148: ...BR Case 2 When the recording paper has jammed near the drum and toner unit 1 Pull open the paper input tray 1 2 Lift the top cover release lever 2 and open the top cover 3 Note Do not touch the transf...

Page 149: ...149 KX MB283BR 3 Remove the jammed paper 6 carefully by pulling it upwards Remove the jammed paper 7 carefully by pulling it toward you 4 Close the paper input tray...

Page 150: ...p cover until locked Case 3 When the recording paper has jammed near the fuser unit 1 Lift the top cover release lever 1 and open the top cover 2 Note Do not touch the transfer roller 4 2 Lift both gr...

Page 151: ...151 KX MB283BR 3 Remove the jammed paper 6 carefully by pulling it upwards 4 Push back the green levers 7 to the original position 5 Close the top cover until locked...

Page 152: ...he recording paper specifications and re install recording paper 1 Pull the paper input tray until it clicks into place then put it com pletely out lifting the front part of the tray Remove the record...

Page 153: ...input tray is not fed into the unit properly The display will show the following Note If the error message is still displayed check the recording paper specifications and re install recording paper 1...

Page 154: ...154 KX MB283BR 12 Service Fixture Tools...

Page 155: ...155 KX MB283BR 13 Disassembly and Assembly Instructions Note Remove the Document Cover the Paper Input tray and the drum and toner cartridge before reassembling...

Page 156: ...156 KX MB283BR 13 1 ADF SECTION...

Page 157: ...157 KX MB283BR 13 2 REMOVE ADF SECTION 1...

Page 158: ...158 KX MB283BR 13 3 REMOVE ADF SECTION...

Page 159: ...159 KX MB283BR 13 4 REMOVE TOP COVER SECTION...

Page 160: ...160 KX MB283BR 13 5 REMOVE SCANNER GLASS SECTION...

Page 161: ...161 KX MB283BR 13 6 REMOVE OPERATION PANEL SECTION...

Page 162: ...162 KX MB283BR 13 7 LEFT SIDE SECTION 13 8 REMOVE MAIN BOARD...

Page 163: ...163 KX MB283BR 13 9 REMOVE GEAR CHASSIS SECTION...

Page 164: ...164 KX MB283BR 13 10 REMOVE PAPER FEED ROLLER 13 11 RIGHT SIDE SECTION...

Page 165: ...165 KX MB283BR 13 12 REMOVE RIGHT SIDE COVER SECTION...

Page 166: ...166 KX MB283BR 13 13 LOWER SIDE CABINET SECTION...

Page 167: ...167 KX MB283BR 13 14 REMOVE RIGHT CASSETTE GUIDE 13 15 REMOVE PICK UP BOARD...

Page 168: ...168 KX MB283BR 13 16 REMOVE HIGH VOLTAGE POWER BOARD...

Page 169: ...169 KX MB283BR 13 17 REMOVE PICK UP ROLLER UNIT...

Page 170: ...170 KX MB283BR 13 18 REMOVE LOW VOLTAGE POWER BOARD...

Page 171: ...171 KX MB283BR 13 19 REMOVE FUSER UNIT...

Page 172: ...172 KX MB283BR 13 20 Installation Position of The Lead 13 20 1 MAIN BAORD SECTION...

Page 173: ...173 KX MB283BR 13 20 2 BOTTOM PART SECTION...

Page 174: ...174 KX MB283BR 13 20 3 SIDE CABINET SECTION...

Page 175: ...175 KX MB283BR 13 20 4 HIGH VOLTAGE POWER SUPPLY BOARD SECTION...

Page 176: ...176 KX MB283BR 13 20 5 LOW VOLTAGE POWER SUPPLY BOARD SECTION...

Page 177: ...177 KX MB283BR 13 20 6 AC INLET SECTION 13 20 7 SOLENOID LEAD SECTION...

Page 178: ...d communication testing to determine if the problem originates from the transmitter receiver or the telephone line 4 Determine causes Determine the causes of the equipment problem by troubleshooting 5...

Page 179: ...dure 1 ADF Document Feed Roller Ref No 116 3 months 5 years 65 000 documents Refer to REMOVE ADF SECTION P 158 ADF SECTION P 221 2 ADF Separation Rubber Ref No 103 3 months 5 years 65 000 documents Re...

Page 180: ...ocument the scanned data or the fax document received by the other party Caution Be careful when handling the drum and toner unit Do not use paper products such as paper towels or tissues to clean the...

Page 181: ...83BR 14 2 1 2 Lower glass 1 Disconnect the power cord 2 Lift the top cover release lever 1 and open the top cover 2 Note Do not touch the transfer roller 4 3 Remove the drum and toner unit 5 by holdin...

Page 182: ...KX MB283BR 4 Clean the lower glass 6 with a soft and dry cloth 5 Reinstall the drum and toner unit 7 by holding the tabs Make sure that the triangles 8 match to install the drum and toner unit correc...

Page 183: ...183 KX MB283BR 6 Close the top cover until locked Caution To prevent injuries be careful not to put your hands under the top cover 7 Re connect the power cord...

Page 184: ...cument frequently misfeeds 1 Disconnect the power cord 2 Open the ADF cover 1 while holding the document cover 2 3 Clean the document feeder rollers 3 with a cloth moistened with iso propyl rubbing al...

Page 185: ...um a fixed electric potential The sensitive drum is the Organic Photo Conductor OPC which is a electric conductive cylinder whose surface is covered with the Charge Generation Transfer Layer CGTL When...

Page 186: ...rge Generation Transfer Layer which conducts the minus charge the plus charged drum s surface is neutralized to be skipped Then the plus charge goes to the ground from the electric conductive cylinder...

Page 187: ...the potential difference causes to send the toner to the developing roller from the toner supply roller The supplied toner to the developing roller is kept to a certain layer thickness by the developi...

Page 188: ...s The cleaning is the stage that cleans the remain toner after the transcription stage The remain toner on the drum and the toner which was attached to the place where the laser beam didn t scan are g...

Page 189: ...er is rosined by Teflon and lubri cated to prevent from attaching the toners The press roller is made of silicon and its spring compresses the melted toner Fixing Part The fixing part becomes high tem...

Page 190: ...190 KX MB283BR 14 4 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 14 4 1 MAIN BOARD 1...

Page 191: ...191 KX MB283BR 14 4 2 MAIN BOARD 2 14 4 3 OPERATION BOARD...

Page 192: ...lux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See ABOUT LEAD FREE SOLDER PbF Pb free P 5 14 5 2 FLAT PACKAGE IC REMOVAL PROCEDURE 1 Put plenty of solder on t...

Page 193: ...the IC setting with the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 Solder the pins sliding the soldering iron in the direction of the arrow 14 5 4 BRIDGE MODIFICAT...

Page 194: ...tests are applied and any mal functions are analyzed In past experiences digital IC especially DRAM and ROM malfunctions are extremely rare after installation in the product This may be repaired by r...

Page 195: ...195 KX MB283BR 14 6 1 NG EXAMPLE...

Page 196: ...196 KX MB283BR 14 7 TEST CHART 14 7 1 ITU T No 1 TEST CHART...

Page 197: ...197 KX MB283BR 14 7 2 ITU T No 2 TEST CHART...

Page 198: ...gram 15 1 For Schematic Diagram Note 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the...

Page 199: ...C18 FRMA9 A19 FRMA10 A21 FRMA11 B21 FRMA12 D21 FRMA13 C21 FRMA14 A22 FRMA15 B22 FRMA16 A23 FRMA17 C22 FRMA18 B23 FRMA19 A24 FRMA20 B24 FRMA21 A25 FRMA22 C23 FRMA23 E24 FRMA24 A13 NFRCE B13 NFROE C13...

Page 200: ...1 AE7 TXD2 AF7 TXD3 AC8 TX_ER AE8 RX_CLKI AD8 RX_DV AF8 RXD0 AC9 RXD1 AD9 RXD2 AE9 RXD3 AD10 RX_ER AF9 MDIO AE10 MDC AF10 MGTINT AF18 LSI_TCK AD16 LSI_TRSTN AF17 LSI_TMS AE17 LSI_TDI AC16 LSI_SCAN_ENA...

Page 201: ...GND 5 SS EN 6 COMP 7 FB 8 BST 9 PAD Z0 1u C660 5VD Z0 1u C655 Z0 1u C689 Z0 1u C668 Z0 1u C662 Z0 1u C674 Z0 1u C675 Z0 1u C656 Z0 1u C670 Z0 1u C666 Z0 1u C690 Z0 1u C667 Z0 1u C676 Z0 1u C677 24V Z...

Page 202: ...202 KX MB283BR MEMO...

Page 203: ...100p C428 J100p C426 J100p C422 J100p C423 J100p C420 3 3V J100p C427 J100p C424 J100p C419 J100p C421 J100p C425 IC400 1 VDD1 2 DQ0 3 VDDQ1 4 DQ1 5 DQ2 6 VssQ1 7 DQ3 8 DQ4 9 VDDQ2 10 DQ5 11 DQ6 12 Vs...

Page 204: ...C K1000p C710 CRM5 1 2H 3 6D CRM2 1 2H 3 6D K1000p C712 CRM4 1 2H 3 6D K0 01u 50V C705 CRM1 1 2H 3 6D Z0 1u C702 Z0 1u C703 K1000p C709 R707 F0 82 3216 AP1 CN701 1 A 2 B 3 XA 4 XB IC700 1 VM1 2 NC1 3...

Page 205: ...AP1 1 CVR 2 HVERR 3 TRS 4 DEV 5 CHG 6 GND 7 24V CN508 1 POUT 2 5V 3 THRM1 4 GND 5 FANON 6 FANDET 7 PICK 8 TNR 9 PTOP 10 REG Z0 1u C555 THRMSTR0 1 2J K1000p C548 OPERST 1 5I 100 R559 KSCLK 1 5I KSTART...

Page 206: ...5 NC R535 AP1 CN509 1 CR_A 2 CR_B 3 CR_XA 4 CR_XB CRM3 1 2H 2 12C CRM0 1 2H 2 12C Z0 1u C567 K1u C509 CRM1 1 2H 2 12C K0 01u 50V C522 CRMEN 1 2I K1000p C527 Z0 1u C566 1k R533 K1000p C528 24V K0 01u 5...

Page 207: ...3 11B 3 3VA2 R115 NC L210 NC L203 NC C211 NC R111 NC R106 NC DG C205 NC L215 NC C202 NC AFECLK 1 7C 2J DG DG2 R211 NC BBITCLK 1 7B R222 NC IC203 NC 1 CD 2 FC2 3 FC1 4 VIN 5 VO1 6 VCC 7 GND 8 VO2 3 3V...

Page 208: ...L105 NC D200 NC 1 2 3 DG L232 NC L233 NC C126 NC C125 NC L234 NC L235 NC L111 NC L110 NC DG2 D102 NC C113 NC L F L238 NC 1 4 3 2 C246 NC L107 NC 2 3 1 4 L237 NC R125 NC R122 NC R131 NC R133 NC L223 N...

Page 209: ...DG2 DG2 DG2 DG1 5VD DG1 DG1 DG3 5VD DG3 5VD DG1 DG2 K390p C6 K390p C7 K0 01u C8 K1500p C21 K1500p C22 K2700p C20 D10p C16 SW54 R SW4 SW23 S3 SW3 SW52 D SW10 ZOOM SW43 S3 R SW53 R SW48 SW21 SW51 D SW1...

Page 210: ...I CN61 7 DG CN61 8 CLK CN61 9 VLED CN61 10 G CN61 11 R CN61 12 B J51 J57 J56 J55 NC C50 NC C51 J52 FG_DEV FG_EARTH J53 J50 SW50 PB1 NC 4 3 1 2 PS50 2 1 4 3 PS52 2 1 4 3 PS51 2 1 4 3 IC50 3 OUTPUT 2 GN...

Page 211: ...211 KX MB283BR MEMO...

Page 212: ...18 RA320 C544 C545 C536 C542 C540 C543 C537 L365 L366 L368 L371 B1 A2 AE1 AF2 A25 C411 C400 C401 R401 IC300 R409 X303 32 768 R346 C310 R384 C311 AF25 C313 1 2V C384 1 4 5 8 Q303 C386 C414 C402 C403 C4...

Page 213: ...C304 L346 L344 R306 L369 L370 C328 L504 C551 C553 C531 C530 C554 DA500 3 3V BATT C323C322 C319 R388 R389 DA300 IC303 C766 C765 C764 C763 C759 C760 R756 C751 C752 C758 2 1 10 9 7 8 R344 1 2V BATT C327...

Page 214: ...SOLUTION CONTRAST ZOOM N in 1 LOWER SET MONITOR FLASH REDIAL 1 2 5 6 3 STOP START 8 9 0 4 7 CALLER ID MENU PbF PFUP1658Z A S1 S2 S3 FAX SW26 SW41 SW22 SW40 SW18 SW45 SW19 SW44 SW23 SW43 SW39 SW20 SW46...

Page 215: ...215 KX MB283BR 16 2 2 OPERAION BOARD BOTTOM VIEW PbF PFUP1658Z 1 10 CN1 1 8 CN2 KX MB283BR OPERATION BOARD BOTTOM VIEW...

Page 216: ...4 A PFUP1659Z A PbF IC50 C52 1 1 CN67 CN65 4 1 1 10 CN64 5 4 CN66 AUTO CH A PFUP1659Z A PbF J58 J59 KX MB283BR TONER SENSOR BOARD PFUP1659Z B A PbF 1 3 1 4 C61 R54 AUTO CH PS50 CN53 PFUP1659Z B A PbF...

Page 217: ...N BOARD 16 3 5 VARISTOR SENSOR BOARD 1 4 PFUP1659Z D A PbF R50 R51 C50 C51 1 4 CN50 AUTO CH PS51 PS52 PFUP1659Z D A PbF KX MB283BR REGISTRATION BOARD A PFUP1659Z E PbF J51 J52 A PFUP1659Z E PbF ZNR50...

Page 218: ...12 2 1 11 PFUP1659Z F A PbF 4 1 C63 C65 C64 L54 R55 C62 4 1 12 1 CN60 CN59 CN61 J53 12 2 1 11 PFUP1659Z F A PbF CN62 4 1 KX MB283BR FLATBED RELAY BOARD A PFUP1659Z G PbF 1 4 C56 R53 R52 C55 AUTO CH A...

Page 219: ...219 KX MB283BR 17 Exploded View and Replacement Parts List 17 1 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 17 1 1 OPERATION PANEL SECTION...

Page 220: ...220 KX MB283BR 17 1 2 TOP COVER SECTION...

Page 221: ...221 KX MB283BR 17 1 3 ADF SECTION...

Page 222: ...222 KX MB283BR 17 1 4 MOTOR SECTION...

Page 223: ...223 KX MB283BR 17 1 5 LOWER CABINET SECTION...

Page 224: ...224 KX MB283BR 17 1 6 UPPER CABINET SECTION...

Page 225: ...225 KX MB283BR 17 1 7 FUSER SECTION...

Page 226: ...226 KX MB283BR 17 1 8 LOWERSIDE CABINET...

Page 227: ...227 KX MB283BR 17 1 9 GEAR SECTION 1...

Page 228: ...228 KX MB283BR 17 1 10 GEAR SECTION 2...

Page 229: ...229 KX MB283BR 17 1 11 CASSETTE OUTPUT TRAY...

Page 230: ...230 KX MB283BR 17 1 12 ACTUAL SIZE OF SCREWS AND WASHERS...

Page 231: ...231 KX MB283BR 17 1 13 ACCESSORIES AND PACKING MATERIALS...

Page 232: ...FUS1642Y COIL SPRING 23 PFUS1344Z COIL SPRING 24 PFDC1005Y GUIDE POM 25 PFJS12M80Y LEAD WIRE 26 PQLB1E1 INSULATOR 27 PFJS04M74Z LEAD WIRE 28 PFJE1068Z LEAD WIRE 29 PFDF1188Z SHAFT 30 PFDV1005Z ANGULAR...

Page 233: ...G 188 PFJS05M75Z LEAD WIRE 189 PFQT2643Z INDICATION PLATE LABEL 190 PFJS02M95Z LEAD WIRE Ref No Part No Part Name Description Remarks 191 PFJS07M82Z LEAD WIRE 192 PFJS05M76Z LEAD WIRE 193 PFUV1111Z CO...

Page 234: ...2AH3G000011 JACK 340 PQMX10010Z COVER 341 PQHR945Z BAND 342 PQLB1E1 INSULATOR 343 WLR18YK39CM4 LEAD WIRE 344 PFJS02M86Z CORD 345 PFHX1937Z COVER 346 XWC4BFJ WASHER Ref No Part No Part Name Description...

Page 235: ...19 UNR92ANJ0L TRANSISTOR SI Q520 2SB1197KQ TRANSISTOR SI S Q521 2SK3018 TRANSISTOR SI S Q522 2SC4081R TRANSISTOR SI S Q523 2SB1197KQ TRANSISTOR SI S Q524 UNR92ANJ0L TRANSISTOR SI Q525 UNR92ANJ0L TRANS...

Page 236: ...C650 ECJ0EF1C104Z 0 1 C651 ECJ0EF1C104Z 0 1 C652 ECJ0EF1C104Z 0 1 Ref No Part No Part Name Description C653 ECJ0EF1C104Z 0 1 C654 ECJ0EF1C104Z 0 1 C655 ECJ0EF1C104Z 0 1 C656 ECJ0EF1C104Z 0 1 C657 ECJ...

Page 237: ...311 ERJ2GEJ152 1 5k R312 ERJ2GEJ223 22k R313 ERJ2GEJ152 1 5k R315 ERJ2GEJ103 10k R316 ERJ2GEJ103 10k R318 ERJ2GEJ104 100k R319 ERJ2RKF2002 R320 ERJ2RHD9531 R321 ERJ2RHD2212 Ref No Part No Part Name De...

Page 238: ...33 Ref No Part No Part Name Description COMPONENTS PARTS RA314 EXB28V470JX RESISTOR ARRAY RA315 EXB28V470JX RESISTOR ARRAY RA316 EXB28V470JX RESISTOR ARRAY RA317 EXB28V470JX RESISTOR ARRAY RA318 EXB2...

Page 239: ...5 PFWP2MB781M PICK UP BOARD ASS Y RTL SW50 PFSH1A003Z PUSH SWITCH CONNECTORS CN51 K1KA05B00189 CONNECTOR 5 PIN CN63 K1KA03BA0061 CONNECTOR 3 PIN Ref No Part No Part Name Description Remarks PCB6 PFLP1...

Page 240: ...240 KX MB283BR H I KXMB283BR...

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