Tektronix Phaser 740 Service Manual Download Page 113

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Service Guide

101

Laser scanner

Removing the laser scanner and driver board

740-7-8

Remove three
screws

Laser
scanner

Disconnect
wiring
harnesses

Separate
these two
wiring
harnesses
to minimize
possible
crosstalk

Laser motor
driver board
(Phaser 740
only)

Shield

Summary of Contents for Phaser 740

Page 1: ...lified service personnel only To avoid personal injury do not perform any servicing other than that contained in operating instructions unless you are qualified to do so This printing Febuary 2000 063 3102 01 P H A S E R 7 4 0 a n d 7 5 0 L A S E R P R I N T E R S ...

Page 2: ...ission of Tektronix Inc Tektronix Phaser and Made for Each Other are registered trademarks of Tektronix Inc TekColor PhaserShare PhaserMatch PhaserLink Finepoint and PhaserPrint are trademarks of Tektronix Inc RealSUPPORTSM and TekColor CareSM are service marks of Tektronix Inc Other marks are trademarks or registered trademarks of the companies with which they are associated TE mq mm ...

Page 3: ...witch does not de energize the printer You must remove the power cord to disconnect the printer from the mains Keep the power cord accessible for removal in case of an emergency Safety instructions Read all installation instructions carefully before you plug the product into a power source Terms on CAUTION A personal injury hazard exists that may not be product apparent For example a panel may cov...

Page 4: ...e caution Refer to the manual s for information Laser use caution Refer to the manual s for information WARNING If the product loses the ground connection usage of knobs and controls and other conductive parts can cause an electrical shock Electrical product may be hazardous if misused ...

Page 5: ...ion This product is certified under IEC 825 as a Class 1 Laser Product 9008 78 DANGER Invisible laser radiation when open and interlock defeated AVOID DIRECT EXPOSURE TO BEAM CAUTION Invisible laser radiation when open and interlocks defeated AVOID DIRECT EXPOSURE TO BEAM VORSICHT Unsichtbare Laserstrahlung wenn Abdeckung geöffnet und Sicherheitsverriegelung überbrückt NICH DEM STRAHL AUSSETZEN AT...

Page 6: ......

Page 7: ...ecifications 26 Error Codes and Messages 27 Error messages 27 Print engine error codes 27 Normal power up self tests 35 Troubleshooting 37 System power up sequence 37 Print engine troubleshooting 38 Testing the print engine 38 Verifying printer operation by using its self test print 39 Verifying power supply operation 39 Measuring power supply voltages 39 Inspecting the power supply fuses 41 Safet...

Page 8: ...int 56 All black print 56 Single color mottled or with non uniform density streaks 57 Dark vertical line in print single color 57 Vertical line in print all colors 57 Vertical line or scratch in print single color 58 Vertical line or scratch in print all colors 58 Small repeating light dot in one color in line with each other 59 Single light horizontal line in all the prints 60 Large random light ...

Page 9: ...figuration Page 74 Printing the demonstration pages 74 Printing the print engine s test print 74 Printing test prints on the Phaser 750 printer 75 Printing the Diagnostic Test Pages and Solid Fill Test Page 75 Printing the Configuration Page 75 Printing the demonstration pages 75 Printing the print engine s test print 75 Embedded pages Phaser 750 printer only 76 Printer self diagnostics 77 Phaser ...

Page 10: ...eed motor 103 Toner cartridge drive motor 103 Cleaning board 103 Toner cartridge drive unit 104 Accumulator belt home position sensor 104 Left door open interlock switch 104 Temperature humidity sensor board 105 Pre exposure lamp 105 Pre transfer lamp 105 Paper feed fuser gear train 106 Tray guides 107 Engine control board 108 High voltage board 109 Image processor board 110 Phaser 740 110 Phaser ...

Page 11: ...I shields 95 Removing the cartridge selector eject unit 97 Removing the paper feeder 98 Removing the multi purpose tray pick roller 99 Removing the cork separator pad 100 Removing the laser scanner and driver board 101 Removing the power supply 102 Removing the main motor paper feed motor toner cartridge drive motor and cleaning board 103 Removing the toner cartridge drive unit home position senso...

Page 12: ... Electrical specifications 25 Environmental specifications 25 Print engine service error codes 27 Normal power up error codes 35 Phaser 740 print engine service test descriptions 77 Phaser 750 print engine service test descriptions 80 FRU parts list of the printer cabinet 114 FRU part list of the printer cabinet 115 Motors drive units and fans 116 Sensors switches and flags 118 Circuit board and e...

Page 13: ...rocedures and a field replaceable units FRU list Topics such as printer theory of operation detailed removal replacement procedures configuration page details and verifying printer operation are located on the companion Color Printer Service Support Resources CD ROM To ensure a complete understanding of the product we recommend participation in Phaser 740 and 750 printer service training The Phase...

Page 14: ...of RAM which can be supplemented with one or two additional 16 32 64 and 128 Mbyte RAM DIMMs maximum usable capacity is 80 Mbytes The printer contains 136 standard built in fonts The printer contains 136 standard built in fonts The Phaser 740 Base prints at a resolution of 600 x 600 dots per inch The Phaser 740 Plus includes 32 Mbytes of additional memory 64 Mbytes total and a SCSI interface board...

Page 15: ...l IDE hard drive can be installed in the printer in place of the network card The printers support printing on A A4 and Legal sized paper and transparency film from separate A or A4 or Legal size trays An optional two tray second feeder called the Lower Tray Assembly is available The printer features a built in multi purpose tray from which specialty media cardstock and envelopes can be fed The pr...

Page 16: ...irst Page Preview mode The Phaser 750DP has all the features and capabilities of the Phaser 750P printer but includes 128 Mbytes of RAM and a Lower Tray Assembly and Duplex Unit The Phaser 750DX has all the features RAM and capabilities of the Phaser 750DP printers but includes an internal hard drive which enables Print Collation mode The hard drive also is pre loaded with manuals videos and print...

Page 17: ...chrome printing is at 4 ppm two sided color at 2 ppm After being idle for the selected amount of time the printer switches into its Energy Star mode where it consumes less than 45 watts of power It awakens upon receiving data at any of its ports The printer features Intelligent Ready software which monitors when and how the printer is used Tracking these patterns over a rolling 3 week period the p...

Page 18: ...r gains the capabilities of printing at higher resolutions printing without having to use image compression which trades off less installed RAM for longer image processing time and dual frame buffers for printing one image while processing a second image which gives greater printing throughput With additional RAM memory the printer s capabilities increase as detailed in the following table Install...

Page 19: ... KMM3665403CTL G0 64 Mbyte Samsung KMM366S824AT 64 Mbyte Samsung KMM3665823BTL G0 128 Mbyte Samsung KMM366S1623AT 32 Mbyte Smart Module SM564043574N6AA 64 Mbyte Smart Module SM564088574N6AA 32 Mbyte NEC MC 454AD645F A10B 64 Mbyte NEC MC 454CB645FA A10B 128 Mbyte NEC MC 4516CD645FZ A10B 16 Mbyte Micron Tech MT8LSDT264AG 66CL2 32 Mbyte Micron Tech MT16LSDT264AG 10BC4 32 Mbyte Micron Tech MT16LSDT264...

Page 20: ...inting at higher resolutions printing without having to use image compression which trades off less installed RAM for longer image processing time and dual frame buffers for printing one image while processing a second image which gives greater printing throughput With additional RAM memory the printer s capabilities increase as detailed in the following table Installed RAM and printer capabilitie...

Page 21: ...r example Installed RAM 64 Mbytes Memory Slot 1 SDRAM parity 64 MB 8LSDT864HG 10EB5 Memory Slot 2 empty This is a list of DRAM SIMMs that are branded for use by Tektronix at the time this guide was published Size Maker Part Number 32MB Micron MT4LSDT464HG 10E 64MB Micron MT8LSDT864HG 10E 128MB Micron MT8LSDT1664HG 10E ...

Page 22: ...2 02 Laser scanner Ozone filter Pre exposure lamp Imaging unit Paper feeder Cyan toner cartridge Magenta toner cartridge Yellow toner cartridge Pre transfer lamp Fuser Toner level sensor board Paper tray Toner cartridge selector paper exit unit right door Main charger corona unit Black toner cartridge ...

Page 23: ... High voltage board Image processor board Toner cartridge drive unit Ozone fan Power supply unit Cleaning board Temperature humidity sensor board Paper feed motor Main motor Lower door open sensor Fuser fan Engine control board Toner cartridge motor Laser driver board Phaser 740 ...

Page 24: ...home position sensor Main charge grid Scorotron charger sensor Toner level sensors transmitters Output tray full sensor Paper empty sensor Fuser exit sensor Paper tray type sensors Aligning sensor Power switch Left door opened switch Transfer roller position sensor Front right door opened switch Toner level sensors receivers are mounted inside the toner cartridge driver unit Paper exit sensor ADU ...

Page 25: ...age processor board Phaser 740 Features of the image processor board 3102 41 Real Time clock Boot ROM NV RAM CPU Network Card SCSI riser board Image processor board RAM DIMM 2 RAM DIMM 1 Font ROM DIMM PostScript code ROM DIMM ...

Page 26: ... Printers Phaser 750 Features of the image processor board 3102 43 RAM module 1 RAM module 2 NVRAM Battery not replaceable CPU Network card or hard disk drive PostScript ROM DIMM updates standard PostScript ROM soldered to board ...

Page 27: ...peripheral parameters Buttons Button 1 the left most button labeled the Exit key cancels an operation while in the interactive menu The functions of Buttons 2 3 and 4 are defined by the particular menu or function being displayed on the LCD display The bottom row of the LCD labels the current function of each button In addition pressing the buttons as you turn on the printer enables certain diagno...

Page 28: ...e meanings Off indicates that no errors have been detected On indicates a warning to the user An explanatory message such as Low Toner is displayed on the LCD Blinking indicates an error has been detected An error message such as Paper Jam at Output is displayed on the LCD The front panel 3102 30 Exit Button 1 Button 2 Button 3 Button 4 Power Error ...

Page 29: ...ase2 and Twisted Pair 100baseT Ethernet connectors RX indicator green blinks while the network card is receiving data The LED is off steady while no data is being received If the LED is on steady a problem probably hardware has occurred at the network hub Phaser 740 printer only LocalTalk connector Unshielded Twisted Pair 10baseT and shielded Twisted Pair DB 9 Token Ring connectors The Token Ring ...

Page 30: ...hile no data is being received If the LED is on steady then a problem probably hardware has occurred at the network hub TP Link On steady indicates good circuit to nearest port off indicates no circuit 100 MBS Ethernet speed is 100 MBS when lit Note Do not use both Ethernet connectors at the same time With a Ethernet network card or Token Ring network card installed the built in Ethernet port is d...

Page 31: ...r network card or IDE hard drive IDE Internal Hard Drive Token Ring card Parallel 100 Mbs 10 100Base TX 10Base2 TP LINK TX RX PhaserShare TM Series B Ethernet Card PhaserShare TM Series B Token Ring Card TX RX INS 16 Mbs STP UTP TX RX LocalTalk PhaserShare TM Series B LocalTalk Card 3102 42 IDE Internal Hard Drive Token Ring card PhaserShare TM Series B Token Ring Card TX RX INS 16 Mbs STP UTP 10 ...

Page 32: ...r On or Off A hard error condition has occurred that would keep the image processor board from operating Media tray type sensing The combinations of the three tray sensors tell the print engine what type of tray is installed The tray sensors are located on the left side interior of the paper tray slot Sensor actuators are attached to the bottom end of the tray to close the appropriate sensor There...

Page 33: ...Service Guide 21 Tray switch sensors and actuators 3102 31 Sensor actuators Tray sensors Left Middle Right ...

Page 34: ...de Intelligent Ready mode Built in Intelligent Ready software tracks usage patterns and places the printer in Standby mode during periods of non use and wakes up the printer prior to a use period Euro currency symbol Euro currency symbol added to the internal PostScript fonts Embedded Pages Numerous built in printable Help pages Scanner support Support for approved scanners as a optical copier thr...

Page 35: ...talled Approximately 31 9 kgs 70 2 lbs without Lower Tray Assembly Printer clearances Clearances Specification Top 7 6 cm 3 in Left 7 6 cm 3 in Right 10 2 cm 4 in for handling the paper tray Front Unlimited for removal of consumables Rear 15 3 cm 6 in for connecting computer cable and power cord Bottom No obstruction under printer that could block its cooling vents Mounting surface flatness Within...

Page 36: ... 2 ppm Fast color three color CMY 5 3 ppm at 600 dpi Print times do not include image processing time which can vary depending on image complexity Minimum printing margins A size Left and right 4 mm 0 15 in Top 5 mm 0 2 in Bottom 5 mm 0 2 in A4 size All sides 5 mm 0 2 in Legal size Left and right 4 mm 0 15 in Top 5 mm 0 2 in Bottom 5 mm 0 2 in Usable paper Tray A size letter A4 size Metric letter ...

Page 37: ...est print quality obtained With in 15 5 o to 25 5 o C 60 o to 78 o F and 30 to 65 RH Temperature Operating Non operating Storage 15 5 o to 32 5 o C 60 o to 91 o F 0 o to 40 o C 32 o to 104 o F 0 o to 40 o C 32 to 104 o F Media should be acclimated 24 hours before using in the printer Humidity Operating Non operating 10 to 80 relative humidity non condensing 10 to 90 relative humidity non condensin...

Page 38: ... Standards Listed UL 1950 Information Processing and Business Equipment Certified CSA C22 2 No 950 Safety of Information Technology Equipment Including Electrical Business Equipment GS licensed IEC 950 1991 Second Edition EN60950 Information Processing and Business Equipment EN50022 CISPR 22 Class B EN61000 3 2 EN61000 3 3 VCCI CISPR 22 Class B FCC Class B for 115 VAC equipment pursuant to Sub par...

Page 39: ...oner cartridge movement error 1 Push the indicated toner cartridge toward the imaging unit Does it require more force to push that cartridge than the other toner cartridges 2 Inspect the wiring harness leading from the toner cartridge selector eject unit to CN6 of the engine control board 3 Check the cam motors for proper operation toner cartridge selector eject 4 Inspect the cam motor drive gears...

Page 40: ...rol board 2 Replace the laser motor drive board 3 Replace the laser scanner 4 Replace the engine control board 13 L sync under time 1 Cycle printer power and try printing again 2 Replace the laser motor drive board 3 Replace the laser scanner 4 Replace the engine control board t Print engine service error codes Error code Meaning of error code and what to do about it ...

Page 41: ...per feeder is properly installed and locked in place 2 Ensure the transfer roller is properly installed Ensure the bias roller makes good contact with its electrical contacts 3 Inspect the wiring leading from the paper feeder to CN20 of the engine control board 4 Inspect the wiring leading from the high voltage board to the second bias transfer roller 5 Replace the high voltage board Toner cartrid...

Page 42: ...ing unit at the end of its life 2 Is there toner on the accumulator belt cleaning blade holder The holder is located on the imaging unit along the bottom of the green OPC belt 3 Check to see if any toner cartridges are leaking toner 4 Ensure that the imaging unit is properly installed and locked in place 5 Inspect and clean the transparent plastic cover over the accumulator belt position sensor Th...

Page 43: ... board 3 Replace the engine control board 4 Replace the power supply 42 Fuser thermistor open 1 Ensure the fuser is properly installed and firmly seated in place 2 Replace the fuser 3 Inspect the wiring harness leading from the fuser to CN25 of the engine control board 4 Replace the engine control board 43 Fuser temperature rising too slow error 1 Remove and reinstall the fuser Insert it smoothly ...

Page 44: ...he paper feeder 5 Replace the engine control board 61 Toner cartridge sleeve drive motor lost sync 1 Are the toner cartridges properly installed in position 2 Does each toner cartridges developer roller rotate when driven by the motor If not replace the toner cartridge 3 Does the toner cartridge motor rotate Check the toner cartridge motor s wiring harness to the engine control board at CN26 If th...

Page 45: ... such as the Phaser 560 will not work with the Phaser 740 70 Program ROM Checksum error 1 Replace the engine control board 2 Replace the engine board NVRAM 71 Program SRAM Checksum error 1 Replace the engine control board 2 Replace the engine board NVRAM 72 EEPROM Checksum error ECU 1 Replace the engine control board 2 Replace the engine board NVRAM 73 EEPROM Checksum error imaging Unit 1 Replace ...

Page 46: ...ges are installed then cycle printer power 2 Reset the image processor NVRAM 3 Check the connection between the image processor board and the engine control board 4 Replace the image process board 5 Replace the engine control board 84 Parity error 1 Reset the image processor NVRAM 2 Check the connection between the image processor board and the engine control board 3 Replace the image process boar...

Page 47: ...age Processor CPU Interrupt 1 Ensure that correct RAM DIMMs Code ROM SIMM SCSI card and network card are installed 2 Reset the NVRAM 3 Replace the Code ROM SIMM 4 Replace the RAM DIMMs 5 Replace the image processor board 6 Replace the font SIMM if installed on Phaser 740 7 Replace the image processor to engine board cable 8 Replace the engine control board 11p Instruction ROM Checksum 13p NVRAM Ac...

Page 48: ...36 Phaser 740 and 750 Color Printers ...

Page 49: ...s occur The engine control board checks its RAM All the engine fans are turned on to ensure they work properly The fuser heater a halogen lamp is activated to heat up the heated roller The position of each toner cartridge is checked to ensure they are in their parked positions The print engine checks to see that the imaging unit and the paper feeder are installed The engine motors are rotated to e...

Page 50: ...he later topic Verifying power supply operation on page 39 3 Phaser 740 printer only Verify that the image processor s health LED is flashing The health LED is viewable through the grill behind the manual feed tray when the tray is lowered 4 Press and hold the test button for 4 seconds on the rear of the printer in the center of the rear cabinet panel The print engine responds by making a parallel...

Page 51: ...ork or host interface Verifying power supply operation Verifying the power supply involves four steps Measuring the input and output voltages Checking the power supply fuse s Checking its safety interlocks Testing for a shorted motor which would shut down the power supply or damage the engine control board Measuring power supply voltages 1 Turn off the printer and unplug it from its power outlet 2...

Page 52: ...ts If DC voltages are not being output by the power supply proceed to the next step Inspecting the power supply fuses on page 41 If the 5 and 24 VDC voltages measure correctly but the printer does not operate correctly then proceed to the topic Safety interlocks on page 41 Measuring the DC voltages test points 3102 06 CN 301 Pin 9 24 V Pin 8 GND Pin 7 GND Pin 6 GND Pin 5 24 V Pin 4 24 V Pin 3 GND ...

Page 53: ...interlock switches Front door opened switch Right side door opened switch Left door opened switch Optional Lower Tray Assembly door switch When any of the switches are opened the 24 VDC supply to the motors is shut down as well as the high voltage power supply 1 Test the functionality of the interlock using the service tests described in Phaser 740 service tests on page 77 2 Turn off the printer 3...

Page 54: ...gram that locates each connector 3 Disconnect the motor harnesses 4 Turn on the printer again to see if it overloads now that the motors are disconnected from the engine driver board If the motors and solenoids are functional but the power supply still does not function replace it Door safety interlock switches 3102 07 Left door switch Optional lower tray assembly door switch Front door interlock ...

Page 55: ...ervice tests on page 80 2 Check that the correct type of media is being used The customer should be using a quality laser printer paper The printer may have trouble picking slick finish paper 3 Inspect the paper for bent torn or folded corners 4 Ensure that the correct media is loaded in the paper tray 5 Transparency film should only be used from a transparency tray or multi purpose tray 6 Refer t...

Page 56: ...ia excessively curled 7 Is the customer using an appropriate type of media a type the printer can handle 8 Ensure the corners or the paper are under the tabs in the corners of the tray 9 If the paper only skews when feed from the upper tray replace the left door Paper tray indicates empty when it is not The procedure for troubleshooting this problem applies to the Lower Tray Assembly as well 1 Doe...

Page 57: ...trol board No imaging unit installed 1 Ensure that the imaging unit is properly installed and locked in place 2 Check the main charge grid boss on the rear of the charger to ensure it is not broken When the imaging unit is installed the boss pushes a flag on the charger sensor board Replace the charger or imaging unit if it is broken 3 Test the sensor using the service tests described in Phaser 74...

Page 58: ...d proper installation Replace the paper feed motor Replace the engine driver board If the pick roller rotates out of position with each pick its clutch is worn Replace the paper feeder 5 If the pick roller does rotate is the pick roller correctly installed flat side of the cam shaped pick rollers face down prior to picking a sheet of paper Does the pick solenoid work properly It must energize for ...

Page 59: ...hat could block the movement of a sheet of paper 7 Check the pinch intermediate roller mounted on the inside of the left door for even spring tension at each end of the roller The spring tension should measure about 65 grams when the roller end is in the middle of its travel in its slot 8 Clean the aligning rollers 9 Do the aligning rollers rotate during a paper pick Determine if the aligning roll...

Page 60: ...ear train which also drives the exit roller properly connects to the paper feed motor 10 Replace the fuser 11 Replace the engine control board Eject jams 1 Is the paper in good condition and appropriate for a laser printer Is the paper curling 2 Is the printer printing within its environmental specifications 3 Is the jam caused by a heavy stiff paper being printed in face down mode In such cases f...

Page 61: ...sensor 7 Check the wiring harness between the multi purpose sensor circuit board and the paper feeder board connector CN607 Ensure that the wiring harness is not damaged 8 Check the wiring harness leading from the paper feeder to the engine control board connector CN20 9 Replace the paper feeder circuit board 10 Replace the engine control board Jams in the duplex unit 1 Is the duplex unit correctl...

Page 62: ...ol board b Power up the printer Wait at least 5 minutes while the print engine initializes If there was a problem with the image processor it will now not affect the print engine control board c Check if the print engine is OK by pressing the print engine test print button you should get the parallel line test print If not then your problem is most likely associated with the print engine control b...

Page 63: ...lace the interlock switch 5 Replace the power supply 6 Replace the engine control board Left side door open message when it is not The procedure for troubleshooting this problem applies to the Lower Tray Assembly as well 1 Is the left door open switch located in the lower left back corner of the printer properly in place 2 Does closing the left door actuate the left door open switch 3 Is the left ...

Page 64: ...he power supply unit 6 Replace the engine control board High voltage error 1 Replace the high voltage board 2 Inspect the high voltage wiring 3 Replace the imaging unit and check the printer for proper operation 4 Sequentially replace each toner cartridge and check the printer for proper operation 5 Ensure that excessive conductive grease has not migrated and shorted a high voltage contact to grou...

Page 65: ... boards s in place are tight Erratic printer behavior 1 Phaser 740 only Check the amount of RAM installed in the printer While more than 192 Mbytes of RAM can be physically installed on the image processor board it can electrically support no more than 192 Mbytes Unreliable printer operation can otherwise result 2 Perform an NVRAM reset Installed RAM not recognized 1 Upon power up the image proces...

Page 66: ...ecifications Based on TEKSMART is the print quality problem a documented printer limitation or unsup portable customer expectation Print the Supplies Page Does the imaging unit or the fuser have less than 20 life remaining Print quality is acceptable Stop Replace that color s toner cartridge Try a supported media Run the Clean for Smudges procedure Use the following troubleshooting images to deter...

Page 67: ...eder Being careful not to get toner on yourself carefully slide the paper out of the printer Slide the paper feeder back into the printer and close the door Has the print quality problem disappeared on the unfused print Replace the fuser Clean or replace the main charge grid Reseat the transfer kit and make a normal Diagnostic Test Page print Is the Diagnostic Test Page print quality OK Is the pri...

Page 68: ...y is installed in the top tray slot 2 Replace the laser unit 3 Replace the imaging unit 4 Determine if the cartridge selector is pushing the toner cartridges into contact with the photoconductive drum 5 Replace the toner cartridge drive unit 6 Replace the cartridge sector eject unit 7 Replace the engine driver board All black print 1 Entire print including margins is black Remove and reinstall the...

Page 69: ...oner Replace the cartridge Dark vertical line in print single color If the line is of one primary color then the trouble can usually be traced to a defect in the color s toner cartridge Too much toner is transferred from the developer roller to the photoconductive belt at the defect point Vertical line in print all colors The problem may be caused by a dirty main charger a defect in the fuser or a...

Page 70: ...of the belt Consequently a blank vertical line will appear on the prints in all colors Remove the imaging unit and with a squeeze bulb blow any dust or toner off of the window located in the ceiling of the cavity left in the printer once the imaging unit is removed If it is in all colors then the problem may be in the imaging unit such as a scratched photoconductive belt Replace the imaging unit A...

Page 71: ...m is a defect on the fuser roller Replace the fuser Thin horizontal lines depending on problem the distance between lines may range from 1 5 mm 1 20th inch between each line to 103 mm 4 in between each line The gear are chattering in paper feeder Apply a single drop of molybdenum grease brown grease to each gear and let print action work the grease into the gears Avoid excess grease 26 5 mm 1 in T...

Page 72: ...rge random light smudges Spots such as those illustrated are caused by fingerprints on the photoconductive or accumulator belt Often the smudges will gradually fade with additional printing Alternately the imaging unit will have to be replaced Fingerprints can be removed by applying some toner any color to the fingerprints and rubbing lightly with a cotton tipped swab Don t remove the toner The pr...

Page 73: ...are caused by a dirty wire If contaminated its charge wire will appear fuzzy Replace the scorotron charger if necessary 1 Inspect the photoconductive belt for damage Replace the imaging unit if necessary 2 Inspect the path the laser beam travels for foreign matter that could block the beam from striking the photoconductive belt 3 If the line is colored one toner cartridge may not be outputting ton...

Page 74: ...ace fuser One primary color faded or pale OR a single color has a dark vertical streak This indicates a problem with a single toner cartridge Replacing the toner cartridge should fix the problem If it does not there may be a problem with the toner cartridge selector eject unit It may not be pushing the cartridge quite far enough to make proper contact with the photoconductive belt resulting in poo...

Page 75: ... the Color Calibration menu is set to print lighter 7 The high voltage board is not outputting sufficient voltage to the second bias transfer roller causing poor transfer of toner to paper Likewise low voltage to the toner cartridge will cause insufficient transfer of toner to the photoconductive belt 8 Inspect the high voltage connector for poor contact with the second bias transfer roller 9 The ...

Page 76: ...r belt In either case the imaging unit must be replaced Contamination of one color by another This is most noticeable on solid primary fills This is caused by a defective photoconductive cleaning blade The blade is not scraping off all of the untransferred toner from the previous pass of the photoconductive belt to the accumulator belt prior to the next toner s transfer to the photoconductive belt...

Page 77: ...r eject unit to CN308 of the engine control board 4 Replace the toner cartridge drive unit 5 Replace the engine driver board 6 Phaser 750 printer only Run the printer calibration routine Calibrate for Paper available from the front panel Help Printer Quality menu Mis transfer missing portions of toner 1 Inspect the heat roller top roller of the fuser for scratches or contamination 2 Ensure the med...

Page 78: ... with some images is unavoidable because of the color structure of the images If a color is used at one part of the image area and the same color is used again at a later area it is very possible to get ghosting of the first image into the second image area after one revolution of the toner cartridge developer roller This occurs because the charge that is created from the first use of the color wa...

Page 79: ...he imaging unit Also inspect the two metal pads on the ends of the toner cartridge that the toner cartridge selector cams push against 3 Inspect the cartridge selector eject unit to ensure that the cams are in good condition Replace the cartridge selector eject unit 4 Replace the imaging unit Image is not centered on the print when it should be 1 Is the paper in good condition and appropriate for ...

Page 80: ... printer printing within its environmental specifications 4 If possible you should feed long grain paper into the printer Long grained paper s grain is parallel to the paper path the direction the paper travels while it is fed through the printer 5 If the print is exiting the printer with dog ears the corners folded down check the paper separators metal tabs in the corners of paper tray Bend the t...

Page 81: ...her assistance Please have the error page in hand 6 If available try printing to a black and white PostScript Level 2 printer such as an Apple LaserWriter If the file does not print on the black and white PostScript printer this may mean that the problem is application or network related Image is rotated 90 degrees 1 In the application s Page Setup make sure that the image is selected to print in ...

Page 82: ...ings on the printer s Configuration Page 6 Verify that the printer is correctly cabled to the network and that the Ethernet cable functions properly 7 Locate and remove and Windows NT shared printers that have captured the AppleTalk queue for the printer 8 Verify the driver version for the built in Ethernet port on a Macintosh G3 9 Reset the printer s NVRAM settings 10 Disable QuickDraw GX Windows...

Page 83: ...or the other consumables is maintained by the printer and can be confused if the consumables are replaced when the printer did not indicate that they should be replaced Date installed The date installed is indicated for the imaging unit fuser main charge grid and fuser roll Toner coverage The imaging unit and the fuser also indicate the average toner coverage of the prints that have passed though ...

Page 84: ... 4 5 5 6 6 7 7 8 8 9 9 A 10 B 11 C 12 D 13 E 14 F 15 For example The hexadecimal value 13FA breaks down into 1 3 F A 1 is 1 3 is 3 F is 15 A is 10 For the For the For the For the 4th column 3rd column 3rd column 3rd column multiply multiply multiply multiply 1 x 163 3 by 162 15 by161 10 by 160 1 x 163 3 x 162 15 x 161 10 x 160 1 x 4096 3 x 256 15 x 16 10 x 1 4096 768 240 10 Add the column values t...

Page 85: ...interactive mode to review and change the printer s operation It also contains the procedures to test and calibrate the printer after you replace key Field Replaceable Units and to evaluate the printer s functionality Required tools Magnifying lens preferably illuminating Phillips screwdriver ...

Page 86: ... the data and set up values stored in NVRAM In the same Help pages menu you can also print the startup page 1 Press the Menu button 2 With the Help pages menu displayed scroll to the Configuration Page menu item Press Print Printing the demonstration pages Demo pages demonstrate the capabilities of the printer 1 Press the Menu button 2 With the Help pages menu displayed scroll to the Demonstration...

Page 87: ...f information regarding the data and set up values stored in NVRAM In the same Help pages menu you can also print the startup page 1 Press the Menu button 2 Scroll to the Configuration menu item and press Menu Scroll to the menu item Configuration Page and press Print Printing the demonstration pages Demo pages demonstrate the capabilities of the printer 1 Press the Menu button 2 Scroll to the Pri...

Page 88: ...king the printer supplies and calibrating the printer for paper To access most of the embedded pages 1 Press the Help button 2 Scroll to the menu item Print Quality and press the Menu button 3 Scroll to the sub menu item Help Pages and press Menu Select the page you want and press Print Most of the embedded pages are located in the Help Pages menu item The Network Setup embedded page is located in...

Page 89: ...ervice tests provide the means to test and check the printer s electro mechanical components and sensors test the paper path calibrate the margins test RAM and check for engine errors Start service tests by pressing and holding Button 3 third button from left while turning on the printer When the message Service Diagnostics appears on the front panel release button 3 Using the Prev and Next button...

Page 90: ...om Tray Sw1 Multi purpose Tray Bottom Tray Sw2 Media Multi purpose Tray Pick Bottom Tray Sw3 Position Registration Roller Black Cart Installed Fuser Exit Cyan Cart Installed Paper Exit Magenta Installed Output Tray Yellow Installed Auto duplex Jam Auto duplex Gate Motor Tests Main Motor Paper Feed Motor Cartridge Motor Laser Motor Lower Feeder Motor Filter Fan Power Supply Fan Fuser Fan Auto duple...

Page 91: ...Pick Roller Paper To Exit Transfer Roller Black Cam On Off Cleaning Blade Yellow Cam On Off Face Up Dn Sole Cyan Cam On Off Fuser Roll Advan Sol Magenta Cam On Off Blow New Fuser Roll Black Roller On Off Main Motor On Misc Tests Erase Lamp HHS Laser Scanner Seal Energy Star Maintenance Clean Accumulator Belt Clean Top Pick Rollers Clean Middle Pick Rollers Clean Bottom Pick Rollers Clean Multi pur...

Page 92: ...rinter off and on Phaser 750 print engine service test descriptions Category Test Print menu map Prints a menu map describing the diagnostic menu structure General Status Provides current print engine status information Status Reports engine status Upper Tray Tray size type Middle Tray Tray size type Lower Tray Tray size type Engine Control Board ROM version Version number Fuser Temperature Temper...

Page 93: ...active inactive Paper Exit active inactive Output Tray active inactive Autoduplex jam active inactive Antoduplex Gate active inactive Top Tray paper active inactive Top Tray Switch 1 active inactive Top Tray Switch 2 active inactive Top Tray Switch 3 active inactive Middle Tray Paper active inactive Middle Tray Switch 1 active inactive Middle Tray Switch 2 active inactive Middle Tray Switch 3 acti...

Page 94: ... Motor Sensor Cycle All Cam Motors Clutch Test This menu item lets you test each printer clutch After starting a clutch test always wait for the Stop prompt before ending the test Black Cartridge Clutch Yellow Cartridge Clutch Magenta Cartridge Clutch Cyan Cartridge Clutch Registration Clutch Auto Duplex Unit Clutch Solenoid Tests This menu item lets you test each printer solenoid After starting a...

Page 95: ...ff Registration Clutch Paper to Auto Duplex Top Pick Roller Middle Pick Roller Bottom Pick Roller Transfer Roller Cleaning Blade Face Up Down Solenoid Fuser Roller Advance Solenoid Blow New Fuser Roll Miscellaneous Tests This menu item allows you to test other printer subsystems Erase lamp Energy Star HHS Laser Scanner Seal Maintenance This menu item lets you run several maintenance processes Clea...

Page 96: ...int a reference print showing the printer s current selections for each primary color The currently selected colors are oriented through the midline of the page with the alternate choices extended above and below them Phaser 750 1 Press the Help button on the front panel to scroll the Print Quality menu 2 Scroll to the Calibrate Colors menu item Press Menu and then select either Adjust Light Dark ...

Page 97: ...nel to scroll to the Adjust color 0 menu for the primary color you wish to change 6 Press the arrow keys to increment the displayed value from 10 to 10 to match the alternate color selected from the reference print Then press OK An indicates the selected value 7 Repeat Step 4 through 6 for any other color that needs adjustment 8 Press Exit to leave the Color Calibration menus Manual color correcti...

Page 98: ... for the grade of non Tektronix paper you print on as well as compensate for the current environmental conditions This adjustment applies only to Standard and Enhanced mode printing Premium mode is not affected by this adjustment You may have to readjust the printer if you switch to a different brand or grade of paper or if the temperature or humidity changes significantly Step 1 Review each of th...

Page 99: ...per should have very few problems since this paper is smooth and relatively dust free You should thoroughly inspect and clean these printers Ask each printer customer about the type of paper he or she uses so that you can be sure to clean the parts of the printer that particular paper may affect If a customer is printing on the more unusual or dustier papers then you should pay particular attentio...

Page 100: ... 4 Remove the fuser 5 Remove the paper tray 6 Slide out the paper feeder 7 Clean the accumulator belt home position sensor with a dry cotton swab 8 Clean all printer rollers except the second bias transfer roller with alcohol dampened wipes only Never apply alcohol on the second bias transfer roller 9 Clean the laser window with puffs of air from the suction bulb Alternately you can vacuum the win...

Page 101: ... on the cleaning roll cover to knock the toner loose from that area c Vacuum the toner Lubrication Molybdenum based brown grease part number 006 7436 00 For all metal to metal metal to plastic and plastic to plastic gears High temperature electrically conductive grease part number 006 7056 00 For the plastic gears of the fuser and the end of the transfer roller shaft ...

Page 102: ...90 Phaser 740 and 750 Color Printers ...

Page 103: ...printer Resetting NVRAM returns all the image processor s NVRAM stored parameters except the network parameters to their factory defaults except the print counts and the Adobe firmware serial number To reset the image processor to its factory default values follow this procedure 1 Press the front panel Help button 2 Scroll to the menu item Printer Administration and press Menu 3 Scroll to the menu...

Page 104: ...92 Phaser 740 and 750 Color Printers ...

Page 105: ...ist on page 113 for a list of the printer s FRUs For more detailed removal replacement procedures refer to the latest Color Printer Service Support Resources CD ROM Printer cabinet Removing cabinet covers 740 7 1 Upper rear cover Lower rear cover Top cover Left side cover Retainer hooks Multi purpose tray Door Left door Hinge pin Conical spring Hinge frame ...

Page 106: ...740 and 750 Color Printers Removing cabinet covers 740 7 2 Toner level sensor board Upper front cover Bottom front cover lift printer to remove Front door Right side covers Front Lower lift printer to remove Rear ...

Page 107: ...ervice Guide 95 EMI shields Note Unplug the engine to image processor cable from the engine control board Removing the EMI shields 740 7 3 EMI shield Interconnect wiring shield Fan EMI shield Phaser 750 ...

Page 108: ...unit s shaft Caution In the next step do not bend the frame to give additional clearance as a damaged frame is not replaceable 5 Unlatch the cartridge selector eject unit and lower it half way down to relieve spring pressure to enable moving the cartridge selector eject unit s shaft Slide the shaft forward until it clears the frame If necessary tap the rear end of the shaft with a screwdriver hand...

Page 109: ...t unit 740 7 7 Remove E ring and bushing Remove E ring and bushing Disconnect wiring harness Cartridge selector eject unit right door E ring E ring Remove E ring Keyed bushing Frame Spring Keyed Washer Washer Keyed bushing Frame Spring Keyed Washer Washer ...

Page 110: ... Paper feeder and tray sensor board The Phaser 750 printer uses release tabs instead of stop screws to secure the paper feeder to the guide rails Removing the paper feeder Back out stop screws Paper feeder Paper tray sensor board 740 7 4 ...

Page 111: ... latches 2 Remove the C clip retainer from the pick roller shaft 3 Slide the right end pick roller retainer on its shaft about 75 mm 3 in towards the front of the printer You may need to use a small flat blade screw driver to release the retainers hook from the groove in the shaft it locks into 4 Slide the pick roller 50 mm 2 in on its shaft towards the front of the printer Lift up and remove the ...

Page 112: ...n and down to the bottom of it travel then tilt it forward 2 With a small narrow flat blade screwdriver reach behind the cork separator pad and free the two retaining hooks hold the separator pad in place Note the spring is under tension Remove the separator pad and spring 3 Install a new cork separator pad Removing the cork separator pad Spring Paper guide Cork separator pad 740 7 6 Retaining hoo...

Page 113: ...er Removing the laser scanner and driver board 740 7 8 Remove three screws Laser scanner Disconnect wiring harnesses Separate these two wiring harnesses to minimize possible crosstalk Laser motor driver board Phaser 740 only Shield ...

Page 114: ...102 Phaser 740 and 750 Color Printers Power supply Removing the power supply 740 7 9 Disconnect wiring harnesses Power supply ...

Page 115: ...motor Paper feed motor Toner cartridge drive motor Cleaning board Removing the main motor paper feed motor toner cartridge drive motor and cleaning board Toner cartridge drive motor Cleaning board Main motor Paper feed motor ...

Page 116: ...lator belt home position sensor Left door open interlock switch Removing the toner cartridge drive unit home position sensor and the left door interlock switch 740 7 13 Toner cartridge drive unit Home position sensor Interlock switch cover Left door opened interlock switch ...

Page 117: ...rd Pre exposure lamp Pre transfer lamp Removing the temperature humidity sensor board Removing the pre exposure lamp and pre transfer lamp 740 7 14 Temperature humidity sensor board Housing Lower rear cover 740 7 15 Pre transfer lamp Pre exposure lamp ...

Page 118: ...ain 1 Remove all consumables and vacuum the printer 2 Turn the printer on its right side 3 Remove the bottom chassis pan 4 Remove the frame cross member 5 Replace the desired gears Removing the gear train Gear train Gear train retainer Frame cross member 740 7 18 ...

Page 119: ...ides 1 Remove all consumables and vacuum the printer 2 Turn the printer on its right side 3 Remove the bottom chassis pan 4 Remove the frame cross member 5 Replace the desired gears Removing the tray guides 740 7 17 Tray guides ...

Page 120: ...ote Swap NVRAM IC4 IC4 stores print engine parameters and all consumable life counts and the engine print count Connector CN28 next to IC4 has no corresponding plug Removing the engine control board 740 7 11 Engine control board IC 4 Engine control board bracket ...

Page 121: ...the tip of a near by screw which will short the harness The bent edge of the restraint faces the front of the printer Note The colored orientation stripe of the front panel wiring harness must be oriented up to properly connect with the connector inside the card cage Removing the high voltage board 740 7 16 Card cage High voltage board Wiring harnesses Cut hazard here Be careful not to short harne...

Page 122: ... Clock module The components contains important customer created parameters The printer may not operate correctly without the components being swapped Also transfer from the old board to the new board The RAM DIMMs The PhaserShare card if installed The SCSI card if installed Note If any DIP switches are mounted on the board they should be set to Open Removing the image processor board 740 7 20 Ima...

Page 123: ...out the NVRAM chip being swapped The RAM module s 1 and 2 The network card or internal hard drive if installed PostScript ROM DIMM if installed Note If any DIP switches are mounted on the board they should be set to Open Removing the image processor board 740 4 40 Image processor board 3102 43 RAM module 1 RAM module 2 NVRAM Battery not replaceable CPU Network card or hard disk drive PostScript RO...

Page 124: ...112 Phaser 740 and 750 Color Printers ...

Page 125: ...he printer Changes to Tektronix instruments are made to accommodate improved components as they become available It is important when ordering parts to include the following information Component s part number Instrument type or number Instrument serial number Modification number if any ...

Page 126: ...er 750 2 118 9892 00 1 Upper front cover operation panel w display board 3 118 9537 00 1 Right side cover rear 4 118 9208 00 1 Right side cover front 5 118 9894 00 1 Right side cover lower 6 118 9541 00 1 Bottom front cover 7 116 0024 00 1 Output tray standard 118 9996 00 1 Lower feeder front cover 118 9622 01 1 Lower feeder left cover 118 9604 00 1 Lower feeder right cover 118 9606 00 1 Lower fee...

Page 127: ...ar cover 110 VAC Upper rear cover 220 VAC Phaser 750 Upper rear cover 110 VAC Upper rear cover 220 VAC 3 118 9888 00 116 0849 00 1 1 Top cover with Phaser 740 logo Top cover with Phaser 750 logo 4 118 9979 00 116 0853 00 1 1 Left side cover Phaser 740 Left side cover Phaser 750 5 118 9522 00 1 Multi purpose feed tray assy 6 118 9543 00 116 0939 00 1 1 Left side door assy Phaser 740 Left side door ...

Page 128: ...0 2 118 9551 00 1 Fan power supply 3 118 9905 00 1 Toner cartridge drive motor 4 118 9514 01 1 Toner cartridge drive unit 5 118 9524 00 1 Fan ozone filter 6 118 9553 00 1 Gear kit Main motor drive Motor compound gear Intermediate compound gear 7 116 0940 00 1 Gear kit Paper feeder fuser White joint gear Black compound gear 4 fuser gears 8 118 9900 00 1 Main motor 9 118 9899 00 116 0862 00 1 Paper ...

Page 129: ...Service Guide 117 Figure 3 Motor and fan FRUs 3102 37 1 10 9 5 8 7 2 6 4 3 ...

Page 130: ...ard 3 118 9558 00 Paper feed flag kit Paper tray empty Multi purpose tray entrance flag Jam at A flag Output tray full flag 4 118 9913 00 1 Tray sensor board 5 118 9550 00 1 Left side door open switch 6 118 9519 00 1 Accumulator belt home position sensor assembly 7 118 9918 00 116 0854 00 1 Humidity temperature sensor Phaser 740 Humidity temperature sensor Phaser 750 8 118 9909 00 118 9910 00 1 1 ...

Page 131: ...Service Guide 119 Figure 4 Sensor switch and flag FRUs 3102 40 1 7 2 3 4 8 5 6 ...

Page 132: ...oard Phaser 740 only 8a 8b 8c 8d 8e 671 3994 00 671 4034 00 671 3932 50 386 7104 00 213 1118 00 650 3887 01 650 4145 00 1 1 1 1 2 1 1 10 100BaseT Ethernet card 740 only LocalTalk network card 740 only Token Ring network card Blank cover plate no card Blank cover plate thumbscrews Internal IDE hard drive P740 only Internal IDE hard drive P750 only 9 118 9559 00 116 0861 00 1 1 Cable IP to engine bo...

Page 133: ...Service Guide 121 Figure 5 Circuit board and electronic FRUs 3102 38 8 2 1 5 6 4 7 3 12 9 10 11 13 14 15 16 17 6 4 15 3 ...

Page 134: ...p 3 118 9549 00 1 Pre exposure erase lamp 4 118 9895 00 116 0858 00 1 1 Paper feeder Phaser 740 Paper feeder Phaser 750 5 118 9896 00 1 Multi purpose tray kit pick roller pad spring pick pad 6 118 9563 00 2 D roller paper feed 7 118 9912 00 1 Guide paper tray front 8 118 9911 00 1 Guide paper tray rear 9 118 9600 01 1 Accumulator cleaning blade clutch assy 118 9916 00 1 Duplex tray connector 119 5...

Page 135: ...Service Guide 123 Figure 6 Imaging and paper feed component FRUs 3102 39 1 2 3 7 9 4 6 8 5 ...

Page 136: ...tridge front and rear 2 rear springs thick CMYK 1 front spring thin black only 2 front springs thin CMY 118 9520 00 116 0860 00 1 1 Hardware kit Phaser 740 Screws E rings C rings Front and rear guide springs Laser Scanner shaft and spring under laser scanner Hardware kit Phaser 750 Screws E rings C rings Front and rear guide springs Laser Scanner shaft and spring under laser scanner ...

Page 137: ... Light shield 016 1710 00 1 Cleaning kit 161 0066 09 1 Power cord 220V Euro 161 0066 10 1 Power cord U K 161 0066 11 1 Power cord Australian 161 0154 00 1 Power cord Swiss 161 0240 00 1 Power cord Danish 161 0304 00 Power cord China 161 0307 00 Power cord Argentina 006 7998 00 1 Conductive grease silicon 006 7971 00 1 Imaging unit light shield drape 650 3572 01 1 Carton bands Rebanding kit Phaser ...

Page 138: ...1 1 Paper tray Legal size Supply 436 0284 01 1 Transparency tray Letter size Supply 436 0285 01 1 Transparency tray A4 size Supply 016 1654 00 1 Transparency Letter size 50 sheets Supply 016 1655 00 1 Transparency Metric size 50 sheets Supply 016 1368 00 1 Paper A size 500 sheets Supply 016 1369 00 1 Paper A4 size 500 sheets Supply 016 1704 00 1 Coated Paper A size 100 sheets Supply 016 1705 00 1 ...

Page 139: ...Share Setup Guide Italian 063 3116 30 PhaserShare Setup Guide German 063 3116 40 PhaserShare Setup Guide Spanish 063 3102 00 Phaser 740 Service Quick Reference Guide 063 3079 00 Phaser 740 CD ROM English 063 3079 10 Phaser 740 CD ROM French 063 3079 20 Phaser 740 CD ROM Italian 063 3079 30 Phaser 740 CD ROM German 063 3079 40 Phaser 740 CD ROM Spanish 063 3079 70 Phaser 740 CD ROM Simplified Chine...

Page 140: ... carton cushions rebanding kit 650 3572 00 1 Carton bands Rebanding kit 004 4844 00 1 Shipping carton 039 0029 00 1 Copy unit A size 119 6003 01 1 ZDISK External SCSI Hard Drive Phaser 740 only Phaser 750 Supplies and accessories Part number Serial number Effective Discont d Qty Name and description Supply 016 1807 00 1 Black toner standard cartridge Supply 016 1804 00 1 Cyan toner standard cartri...

Page 141: ... 1432 00 Standard Transparency Metric size 50 sheets Supply 016 1427 00 Premium Transparency Letter size 50 sheets Supply 016 1428 00 Premium Transparency Metric size 50 sheets Supply 016 1368 00 Paper A size 500 sheets Supply 016 1369 00 Paper A4 size 500 sheets Supply 016 1704 00 Coated Paper A size 100 sheets Supply 016 1705 00 Coated Paper A4 size 100 sheets Supply 016 1130 00 Transparency sle...

Page 142: ...03 40 Phaser 750 Manual Pack Spanish 061 4203 60 Phaser 750 Manual Pack Brazilian Portuguese 061 4203 70 Phaser 750 Manual Pack Simplified Chinese 061 4203 80 Phaser 750 Manual Pack Traditional Chinese 061 4203 90 Phaser 750 Manual Pack Korean 063 3295 00 Phaser 750 CD ROM English 063 3295 10 Phaser 750 CD ROM European languages 063 3295 35 Phaser 750 CD ROM Kanji 063 3295 70 Phaser 750 CD ROM Asi...

Page 143: ...Print Power Error Service Print 2 Print From the Help Pages menu in the front panel select Service Print 2 Black Cyan Magenta Yellow CMYK Power Error Consumables page Print From the Help Pages menu in the front panel select Consumables Page Toner Imaging Unit Main Charge Grid Fuser Roll Transfer Kit Fuser Black Page Remaining 500 5 coverage Your average coverage page TBD Page Remaining 500 5 cover...

Page 144: ...tridges Toner Door Fuser Fuser Roll Front Panel Display Imaging Unit Main Charge Grid Front Door Toner Imaging Unit Main Charge Grid Fuser Roll Transfer Kit located in paper feeder Fuser Reorder 016 1662 00 110V Reorder 016 1660 00 Reorder 016 1664 00 Reorder 016 1665 00 Reorder 016 1663 00 Black Pages Remaining 500 5 coverage Standard Reorder 016 1807 00 Cyan Hi Capacity Reorder 016 1803 00 220V ...

Page 145: ... crosshairs The belt may rejuvenate after a few hours of non use but this will only last for a few prints before fatigue sets in again 3 Fine parallel lines Distinct parallel lines both horizontal and vertical should be viewable No mottling or blending should be seen All vertical lines should be identical in appearance and thickness to their horizontal counterparts 4 2 pt text The 2 point text the...

Page 146: ...ill Its purpose is to reveal repeating defects that can be traced back to defects on the printers belts or rollers 1 Look for repeating defects inline down the print Refer to the topic Small repeating light dot in one color in line with each other on page 59 It discusses causes of repeated spots based on the distance between the spots In some instances the spots may be dark instead of white They m...

Page 147: ...4 CN 25 CN 2 CN 27 CN 3 CN 24 CN 22 CN 26 CN 618 CN 15 CN 18 CN 17 CN 19 CN 617 Exit tray full sensor Power switch Front door right door closed sensors Toner cartridge level transmitter sensor CN 630 Toner cartridge level sensor Receiver and roller clutch board CN 619 CN 620 CN 621 CN622 CN623 Toner cartridge sub bias board B Y M C Exit roller sensor board CN 611 CN 614 CN 612 CN 613 Left door clo...

Page 148: ...136 Phaser 740 and 750 Color Printers ...

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