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HL-1850/1870N SERVICE MANUAL CAUTION INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCK DEFEATED. AVOID DIRECT EXPOSURE TO BEAM. CLASS 3B LASER PRODUCT. ADVARSEL USYNLIG LASER STRÅLING NÅR KABINETLÅGET STÅR ÅBENT. UNGDÅ DIREKTE UDSÆTTELSE FOR STRÅLING. KLASSE 3B LASER. VARNING OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE.
SAFETY INFORMATION DEFINITIONS OF WARNINGS, CAUTIONS AND NOTES The following conventions are used in this service manual: WARNING Indicates warnings that must be observed to prevent possible personal injury. CAUTION: Indicates cautions that must be observed to service the printer properly or prevent damage to the printer.
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READY NO DATA STORED COPIES= 1 COPIES=999...
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COPIES= COPIES= REPRINTING PRESS SET TO PRINT...
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NO DATA STORED LAST JOB SECURE USER XXXXXXX JOB XXXXXXX PASSWORD XXXX COPIES= PRESS SET TO PRINT PRINTING NO DATA STORED DELETE STORAGE...
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READY PROCESSING SLEEP PRINTING SELF TEST PAUSE NOW INITIALIZING WARMING UP MEMORY SIZE=XX MB JOB CANCELING RESOLUTION ADAPT PRESS SET TO PRINT RESET TO FACTORY SETTING...
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READY INFORMATION PAPER SOURCE MP FIRST =OFF ”.
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INFORMATION PAPER QUALITY SETUP PRINT MENU NETWORK INTERFACE RESET MENU...
PRINT SETTINGS PRINT TEST PRINT DEMO PRINT FILE LIST PRINT FONTS VERSION SER.NO=######### ROM VER=#### ROM DATE ##/##/## NET VER=#### NET DATE ##/##/## RAM SIZE=###MB MAINTENANCE PAGE COUNTER =###### REMAIN DRUM =###### REMAIN PF KIT1 =###### REMAIN PF KIT2 =###### REMAIN FUSER =###### REMAIN LASER...
RESOLUTION TONER SAVE DENSITY LANGUAGE LCD DENSITY POWER SAVE TIME AUTO CONTINUE LOCK PANEL REPRINT PAGE PROTECTION EMULATION KEEP PCL RAMDISK SIZE DELETE STORAGE SECURE FILE DATA ID MACRO ID FONT ID FORMAT...
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MEDIA TYPE PAPER COPIES ORIENTATION PRINT POSITION X OFFSET=0 Y OFFSET=0 AUTO FF=OFF FF SURPRESS HP LASERJET FONT NO. FONT PITCH/POINT SYMBOL/ CHARACTER SET TABLE PRINT AUTO LF=OFF AUTO CR=OFF AUTO WRAP=OFF...
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AUTO SKIP=ON HP LASERJET LEFT MARGIN RIGHT MARGIN TOP MARGIN BOTTOM MARGIN LINES EPSON FX-850 FONT NO. FONT PITCH/ POINT SYMBOL/ CHARACTER SET TABLE PRINT AUTO LF=OFF AUTO MASK LEFT MARGIN RIGHT MARAGIN TOP MARGIN...
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IBM PROPRINTER FONT NO. FONT PITCH/ POINT SYMBOL/ CHARACTER SET TABLE PRINT AUTO LF=OFF AUTO CR=OFF LEFT MARGIN RIGHT MARAGIN TOP MARGIN BOTTOM MARGIN LINES BR-SCRIPT ERROR PRINT...
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TCP/IP TCP/IP ENABLE IP ADDRESS= SUBNET MASK= GATEWAY= IP BOOT TRIES IP METHOD NETWARE NETWARE ENABLE NET FRAME APPLETALK NETBEUI DLC/LLC BANYAN NETBIOS/IP ENET AUTO IF TIME INPUT BUFFER PARALLEL HIGH SPEED BI-DIR=ON/OFF...
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RESET PRINTER FACTORY RESET INFORMATION NETWORK TCP/IP TCP/IP ENABLE IP ADDRESS= 192.0.0.192 123.0.0.192 123.45.67.89 123.45.67.89...
PAPER SOURCE TRAY PRIORITY MP FIRST MP SIZE MANUAL FEED TRAY1 SIZE TRAY2 SIZE DUPLEX QUALITY RESOLUTION TONER SAVE DENSITY SETUP LANGUAGE LCD DENSITY POWER SAVE TIME AUTO CONTINUE LOCK PANEL REPRINT EMULATION KEEP PCL PRINT MENU MEDIA TYPE PAPER COPIES ORIENTATION PRINT POSITION...
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HL-1850/1870N SERVICE MANUAL Network board (Standard for HL-1670N Option for HL-1650) Optional RAM (DIMM) Ethernet (max. 128Mbytes) 10/100 Base TX Control system Expansion RAM 8MB PCI bus memory I/O Interface block (Parallel / USB) Video control block Engine control block Operation block (Control panel) Paper tray unit...
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CHAPTER 3 THEORY OF OPERATION A S I C CPU Core (MB86834) Oscillator (48MHz) Reset Circuit Address Decoder DRAM Control Program + Font ROM 10 Mbytes Timer Network Program (2.0 Mbytes) FIFO CDCC Parallel I/O To PC (HL-1650: 8.0 Mbytes) (HL-1670N: 16 Mbytes) To PC USB I/O...
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CHAPTER 3 THEORY OF OPERATION (Heater) Thermal Fuse Fuse Heater Circuit Lamp Fuse Lightning Surge Absorber Feedback Line Oscillator Rectifier Filter (Engin Circuit / Main Circuit) Regulation Circuit 3.3V 3.3V Regulation Circuit...
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HL-1850/1870N SERVICE MANUAL Current 24VI Regulator Transfer Roller Voltage Cleaning Brush Regulator Supply Roller Photosensitive Drum VR21 Development Roller Current Regulator Corona Unit Voltage Regulator VR81 Voltage Regulator VR51 Voltage Regulator VR31...
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HL-1850/1870N SERVICE MANUAL Panel PCB Laser Unit H Network Laser Board (HL-1670N) Polygon Motor Drum Unit Primary Charger (Corona Wire) Primary Charger (Grid) Main PCB Engine PCB High- Development Roller Voltage Front Power Supply Roller Registration Supply Sensor Low-Voltage Transfer Roller Power Supply Rear Paper Dust Cleaner...
CHAPTER 3 THEORY OF OPERATION 2.6.2 Exposure stage Fig. 3-31 1 Cycle of drum Primary charging Laser beam exposure and developing (a) Unexposed area +870 ( Non image area ) (b) Exposed area ( Image area ) Transfer the image to paper +400 +150 Drum...
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY SAFETY PRECAUTIONS WARNING (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Some parts inside the printer are extremely hot immediately after the printer is used.
HL-1850/1870N SERVICE MANUAL DISASSEMBLY FLOW AC CORD BASE PLATE LASER UNIT DRUM UNIT ENGINE PCB ASSY PAPER CASSETTE FIXING UNIT / HIGH-VOLTAGE PS PCB ASSY NETWORK BOARD PAPER PICK-UP ROLLER ASSY TOP COVER EXIT ROLLER UNIT DX SENSOR FEED MP UNIT PCB ASSY DX FEED ASSY PAPER FEED...
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WARNING (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Some parts inside the printer are extremely hot immediately after the printer is used. When opening the front cover or rear cover to access any parts inside the printer, never touch the red colored parts shown in the following figures.
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CAUTION: WARNING There are high voltage electrodes inside the printer. Before cleaning the printer, make sure that the power switch has been turned off and the power cord has been unplugged from the power outlet. CAUTION: CAUTION:...
CHAPTER 6 TROUBLESHOOTING Warnings for Maintenance Work WARNING (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Some parts inside the printer are extremely hot immediately after the printer is used. When opening the front cover or rear cover to access any parts inside the printer, never touch the red colored parts shown in the following figures.
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TONER EMPTY NO PAPER XXXX COVER OPEN FUSER OPEN FACE UP OPEN JAM XXXXXX MANUAL FEED BUFFER ERROR STORAGE FULL DOWNLOAD FULL FONT FULL MEMORY FULL SIZE MISMATCH...
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PRINT OVERRUN IGNORE DATA SIZE ERROR DX SIZE ERROR T1 SIZE ERROR T2 NO DX TRAY DX LEVER ERROR NO TRAY1 CLEAN DRUM UNIT CHANGE DRUM SOON TONER LOW REPLACE PF KIT1 REPLACE PF KIT2 REPLACE FUSER REPLACE LASER...
ERROR ### SERVICE CALL Error occurs. Confirm the LCD indication. Turn OFF/ON the power switch. Error occurs again. Temporary error. See section 5. Use the printer with- 'MALFUNCTIONS'. out corrective action.
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+ lead pin - lead pin Voltage P5-2 P5-3 Approx. 24V Engine Approx. 5V P3-10 P3-9...
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I-5 Dirt on back of paper I-1 Light I-2 Dark I-2 Dark I-3 Completely blank I-4 All black I-6 Black vertical I-6 Black vertical I-7 Black horizontal I-8 Black vertical I-9 White vertical streaks streaks stripes streaks streaks Print out test print out test print out test Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print out test print out test Print out test print o Print out test print o...
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Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o Print out test print out test print out test Print out test print o Print out test print o...
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Entering the Professional Menu Mode Accessing the Required Menu Inputting a Value or Setting for a Professional Menu Mode Exiting the Professional Menu Mode...
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TRAY SETTING PAPER IN=CONT* (MANUAL FEED) PAPER IN=STOP TRAY COMMAND MODE TRAY COM.=NORM* TRAY COM.=SPEC. READOUT SELECT READOUT=OFF* READOUT=ON FONT SELECT SCALABLE FONT FONT=ALL* FONT=LJ4 FONT SELECT PRIMARY FONT SECONDARY FONT IBM CHR SET MODE IBM E1H=Esszet IBM E1H=Beta W BOLD ON/OFF W BOLD=OFF* W BOLD=ON DLFNT Bd/It...
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ISR FONT SELECT ISRFONT=DISABLE* ISRFONT=ENABLE BRO FONT SELECT BROBITM=DISABLE* BROBITM=ENABLE...
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FONT SELECT 300DPI PRIORITY 3B PRIO=LOW* 3B PRIO=HIGH FX/XL SCALE FONT SCAL.F=NORMAL* SCAL.F=ALL SIZE FX/XL SCALE ITA. ITA=OBLIQUE* ITA=ITALIC SEL exit FONT PAPER&TRAY SIZE DEF PAPER=LT* DEF PAPER=A4 PARALLEL MENU PARALLEL TIMING CDCC PSW=H* CDDC PSW=L STB/ACK DELAY CDCC BSSL=L* CDCC BSSL=H exit PARALLEL REPRINT ON/OFF...
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AUTO HRC ON/OFF AUTO HRC=OFF* AUTO HRC=ON DEMO PAGE ON/OFF DEMO PAGE=ON* DEMO PAGE=OFF APPLETALK AT/PS APPLE TALK=PS* APPLE TALK=AUTO PS BINARY SELECT PS BINARY=ASCII* PS BINARY=BIN PS QUOTE BINARY PS QUOTEBIN=OFF* BS QUOTEBIN=ON PS IMAGE MASK PS IMAGEMSK=OFF* BS IMAGEMSK=ON PS CELL MODE PS CEIL=FLOOR* PS CEIL=CEIL...
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PS300RESO PS300RESO=NO* PS300RESO=IF 2M PS300RESO=FORCE COPY PAGES COPY PAGES=ON* COPY PAGES=OFF PANEL RESET MODE RESET=NORMAL* RESET=JOB JOB TIMEOUT SEL TIMEOUT=ON* TIMEOUT=OFF BACKLIGHT TEST BACKLIGHT=OFF BACKLIGHT=GREEN BACKLIGHT=RED BACKLIGHT=ORANGE exit VIEWANGLE TEST VIEWANGLE=0 VIEWANGLE=1 VIEWANGLE=2 exit NV-RAM DEBUG NV-RAM DISPLAY NV-RAM HEX PRINT exit JOB CANCEL TIME TIME OUT=XXsec...
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APPLEUSBPS BINARY=OFF* BINARY=ON DX 1JOB1PAGE SEL 1JOB1PAGE=SX* 1JOB1PAGE=DX PS FONT CACHE CLEAR CACHE=OFF* CLEAR CACHE=ON exit MENU...
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SERVICE INFO PAGE COUNT JAM COUNT TONER CHANGE DRUM CHANGE PF KIT 1 CHANGE PF KIT 2 CHANGE FUSER CHANGE LASER CHANGE COVERAGE A4 PAGE LETTER PAGE LEGAL PAGE EXECUTIVE PAGE B5 PAGE JIS B5 PAGE...
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A5 PAGE A6 PAGE SERVICE INFO B6 PAGE COM10 PAGE C5 PAGE DL PAGE MONARCH PAGE A4LONG PAGE ERROR HISTORY 1:####### 2:####### 3:####### …… 10:####### LIFE PERIOD DRUM LIFE DRUM UNIT PF KIT 1 PF KIT 2 FUSER UNIT LASER UNIT MODIFY COUNT JAM COUNT REPLACE COUNT...
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MODIFY COUNT REMAIN LIFE DRUM UNIT PF KIT 1 PF KIT 2 FUSER UNIT LASER UNIT RESET COUNT CLEAR COVERAGE CLEAR ERROR HIST...
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DEMO MODE=ON* DEMO MODE=OFF LANG.=ENGLISH* …… HEX DUMP MODE DRAM CHECK MODE GO TEST MODE LINE TEST MODE ZLH HV CHECK...
Appendix 1. Connection Diagram, HL-1850/1870N A - 1...
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Appendix 2. Main PCB Circuit Diagram, HL-1850/1870N (1/6) CODE LJ8453001 NAME B512078CIR (1/6) A - 2...
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Appendix 3. Main PCB Circuit Diagram, HL-1850/1870N (2/6) CODE LJ8453001 NAME B512078CIR (2/6) A - 3...
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Appendix 4. Main PCB Circuit Diagram, HL-1850/1870N (3/6) CODE LJ8453001 NAME B512078CIR (3/6) A - 4...
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Appendix 5. Main PCB Circuit Diagram, HL-1850/1870N (4/6) CODE LJ8453001 NAME B512078CIR (4/6) A - 5...
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Appendix 6. Main PCB Circuit Diagram, HL-1850/1870N (5/6) CODE LJ8453001 NAME B512078CIR (5/6) A - 6...
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Appendix 7. Main PCB Circuit Diagram, HL-1850/1870N (6/6) CODE LJ8453001 NAME B512078CIR (6/6) A - 7...
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Appendix 8. Engine PCB Circuit Diagram, HL-1850/1870N (1/2) Red 5 Pin PH Right Angle Black 6 Pin PH Right Angle Straight White 2 Pin PH Right Angle White 3 Pin PH Right Angle White 5 Pin PH Right Angle White 4 Pin PH Right Angle Red 6 Pin PH Right Angle...
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Appendix 9. Engine PCB Circuit Diagram, HL-1850/1870N (2/2) Straight White 9 Pin PH Red 9 Pin PH Right Angle Straight Black 5 Pin PH CODE LJ8439001 NAME B512079CIR (2/2) A - 9...