Tektronix Phaser 740 Service Manual
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Tektronix Phaser 740 Service Manual

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See also: Instruction Manual , User Manual
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
Warning
The following servicing instructions are for
use by qualified 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

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Summary of Contents for Tektronix Phaser 740

  • Page 1 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 Warning The following servicing instructions are for use by qualified service personnel only. To avoid personal injury, do not perform any servicing other than that contained in operating instructions unless you are qualified...
  • Page 2 © Copyright 1998 by Tektronix, Inc., Wilsonville, Oregon. Printed in the United States of America. All rights reserved. Contents of this publication may not be reproduced in any form without permission of Tektronix, Inc. ® ® ® Tektronix , Phaser...

  • Page 3: Users Safety Summary

    Users safety summary Terms in CAUTION Conditions that can result in damage to the product. manual: WARNING Conditions that can result in personal injury or loss of life. Power source: For 110 VAC printers, Do not apply more than 130 volts RMS between the supply conductors or between either supply conductor and ground.
  • Page 4 Symbols as marked on product: DANGER high voltage: Protective ground (earth) terminal: Use 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.
  • Page 5 Service safety summary For qualified service personnel only: Refer also to the preceding Users Safety Summary. Do not service alone: Do not perform internal service or adjustment of this product unless another person capable of rendering first aid or resuscitation is present. Use care when servicing with power on: Dangerous voltages may exist at several points in this product.

  • Page 7: Table Of Contents

    Contents General Information The Phaser 740 Color Printer The Phaser 750 Color Printer Phaser 740 printer RAM and printer capabilities Phaser 750 printer RAM and printer capabilities Print engine assemblies The image processor board Phaser 740 Phaser 750 Front panel...
  • Page 8 Stains on the back of the print Ghosting Unfused or partially fused printing Image is skewed on the paper No printing on edge of print Image is not centered on the print when it should be viii Phaser 740 and 750 Color Printers...
  • Page 9 Toner coverage Print counts Print count conversions Service Tests and Adjustments Required tools Printing test prints on the Phaser 740 printer Print service test prints Printing the Configuration Page Printing the demonstration pages Printing the print engine’s test print Printing test prints on the Phaser 750 printer...
  • Page 10 Paper feed/fuser gear train Tray guides Engine control board High-voltage board Image processor board Phaser 740 Phaser 750 FRU List Supplies and accessories Test Prints Phaser 740 printer test prints Phaser 750 printer test prints Wiring Diagram Phaser 740 and 750 Color Printers...
  • Page 11 Figures The Phaser 740/750 Color Printer 1 Print engine major components 10 Print engine components (continued) 11 Print engine sensor, switch and solenoid locations 12 Features of the image processor board 13 Features of the image processor board 14 The front panel 16...
  • Page 12 Tables Installed RAM and printer capabilities 6 Installed RAM and printer capabilities 8 Tray switch sensor combinations 20 Summary of differences between Phaser 740 and Phaser 750 22 Physical dimensions 23 Printer clearances 23 Functional specifications 24 Electrical specifications 25...

  • Page 13: General Information

    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. A 4 A 4 3102-01...

  • Page 14: The Phaser 740 Color Printer

    RAM DIMM. The printer contains 136 standard, built-in fonts. The Phaser 740L is identical to the Phaser 740 except is set to only use a black toner cartridge. It features a removable plate which blocks out the locations of the color cartridges.
  • Page 15 Print speeds depend on the chosen resolution and selected media. For resolutions of 600 x 600 (standard), in color, the printer prints at 4 pages per minute (ppm) on paper. Monochrome printing (Fast Monochrome) is at 16 ppm on paper. Transparency film printing is always 2 ppm.

  • Page 16: The Phaser 750 Color Printer

    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 printer also supports manual feeding using the multi-purpose tray. Phaser 740 and 750 Color Printers...
  • Page 17 An optional duplex unit allows the printer to automatically create two-sided prints. The duplex unit takes the place of the main (top) tray. The duplex unit requires using the optional two-tray second feeder as a paper source. The duplex unit upgrade kit includes the optional two-tray feeder.

  • Page 18: Phaser 740 Printer Ram And Printer Capabilities

    Phaser 740 printer RAM and printer capabilities The Phaser 740 printer features two DIMM connectors which accept both 16-, 32-, 64-, and 128-Mbytes RAM DIMMs. The printer can use off-the-shelf RAM meeting these specifications: 168-pin DIMM Synchronous DRAM 3.3 volt 9 nsec speed Valid on-board Serial Presence Detect ROM.
  • Page 19 For example: Installed RAM: 64 Mbytes Mem slot 1: SDRAM/parity/64 MB/KMM366S824AT Mem 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...

  • Page 20: Phaser 750 Printer Ram And Printer Capabilities

    1200 x 1200 dpi Color Color Pipelining Frame buffer 1 Letter size image 2 Letter-size 2 Letter-sized frame with no images with buffers with no compression compression image compression Check print Collation (requires hard drive) Phaser 740 and 750 Color Printers...
  • Page 21 For 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...

  • Page 22: Print Engine Assemblies

    Black toner cartridge Cyan toner Toner cartridge cartridge A 4 A 4 selector/paper Yellow toner exit unit Paper tray cartridge (right door) Magenta toner Fuser cartridge Pre-transfer lamp 3102-02 Print engine major components Phaser 740 and 750 Color Printers...

  • Page 23: Print Engine Components (Continued)

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

  • Page 24: Print Engine Sensor, Switch And Solenoid Locations

    Print engine sensor, switch and solenoid locations The photoconductive belt position sensor is not illustrated. This optical sensor marks the home position of the photoconductive belt. It is mounted inside the customer- replaceable imaging unit. Phaser 740 and 750 Color Printers...

  • Page 25: The Image Processor Board

    The image processor board Phaser 740 DIMM 2 Font ROM DIMM DIMM 1 Boot PostScript code ROM DIMM Network Card Image processor board Real Time clock SCSI riser board 3102-41 Features of the image processor board Service Guide...
  • Page 26 Phaser 750 module 1 module 2 NVRAM Network card or hard disk drive PostScript ROM DIMM (updates standard PostScript ROM soldered to board) Battery (not replaceable) 3102-43 Features of the image processor board Phaser 740 and 750 Color Printers...

  • Page 27: Front Panel

    Pressing and holding Button 3, as you turn on the printer, executes interactive service tests. Refer to “Phaser 740 service tests” on page 77. The topic, “Resetting NVRAM” on page 91 explains how to use the front panel buttons to reset the printer’s NVRAM to its factory default values.

  • Page 28: The Front Panel

    Blinking indicates an error has been detected. An error message, such as, Paper Jam at Output, is displayed on the LCD. Power Error Exit Button 1 Button 2 Button 3 Button 4 3102-30 The front panel Phaser 740 and 750 Color Printers...

  • Page 29: Rear Panel

    (independently of the image processor); it has no use for determining print quality. Note Phaser 740 printer: The Test Print button will not make a test print if the auto-duplex unit is installed since the Test Print function defaults to the upper tray.

  • Page 30: Network Card Leds

    Network card LEDs The Ethernet port has two LED indicators. The LEDs are also found on the Ethernet network card used by the Phaser 740 printer: TX indicator (yellow); blinks while data is transmitted to the host. The LED is off while no data is being sent.

  • Page 31: The Phaser 740 Rear Panel

    10baseT Ethernet IDE Internal Token Ring 10/100baseT LocalTalk Hard Drive card Ethernet card card SCSI Parallel 3102-05 The Phaser 740 rear panel Slot for network card or IDE drive 10/100baseT Ethernet IDE Internal Token Ring Parallel Hard Drive card 3102-42...

  • Page 32: Health Led (Phaser 740 Only)

    Letter (A-size) paper Closed Closed Open Letter (A-size) transparency film Open Open Closed Metric Letter (A4-size) paper Open Closed Closed Metric Letter (A4-size) transparency film Open Closed Open Legal size paper Closed Open Closed Auto-duplex unit Phaser 740 and 750 Color Printers...

  • Page 33: Tray Switch Sensors And Actuators

    Sensor actuators Middle Left Right Tray sensors 3102-31 Tray switch sensors and actuators Service Guide...

  • Page 34: Difference Between Phaser 740 And 750

    The Phaser 750 printer’s paper feeder, which is customer replaceable, features quick-release tabs to facilitate removing the paper feeder. It also features a transparency sensor. The paper feeder is not reverse compatible to the Phaser 740 printer. New supported media The Phaser 750 printer support Executive-size paper (7.25 x 10.5 in.) from the Multi-Purpose Tray.

  • Page 35: Specifications

    Specifications Physical dimensions Dimensions Specification Height: 46.3 cm (18.2 in.) With Lower Tray Assembly: 68.6 cm (27 in.) Width: 50.73 cm (20 in.) With output tray: 78.2 cm (30.8 in.) Depth: 49.2 cm (19.4 in.) Weight: Approximately 47.5 kgs (104.6 lbs.) with consumables installed. Approximately 31.9 kgs (70.2 lbs.) without Lower Tray Assembly.
  • Page 36 Time from paper-load to paper-eject for continuous A, A4 printing: (A, A4, Legal paper) Four-color 4 ppm at 600 x 600 dpi (Phaser 740) paper: 4 ppm at 1200 x 600 (Phaser 750) 2 ppm at 1200 x 1200 dpi...
  • Page 37 Electrical specifications Characteristic Specification Primary line voltages 90 to 132 VAC (115 VAC or 100 VAC nominal); 198 to 264 VAC (220 VAC nominal) Primary voltage frequency 50 to 60 Hz range Power consumption 130 watts (fuser off), 850 watts (fuser on) during Ready state, 950 watts during warm-up, 208 watts during printing, 45 watts during Energy Star state Primary voltage fusing...

  • Page 38: Regulatory Specifications

    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-part J of Part 15. ICES 03 Class B Phaser 740 and 750 Color Printers...

  • Page 39: Error Codes And Messages

    Error Codes and Messages Error messages Generally, the top line of the two-line front panel display indicates the printer’s status, such as Ready, Printing, Busy, or Stopped. The bottom line indicates the function of the three buttons located immediately below the LCD. The front panel also displays error codes when it encounters certain system failures.
  • Page 40 4. Replace the engine control board. 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 Phaser 740 and 750 Color Printers...
  • Page 41 Print engine service error codes Error code Meaning of error code and what to do about it High voltage error. Main charge grid charger 1. Ensure that the imaging unit is properly installed and locked in place. 2. Ensure the main charge grid is properly installed. Ensure the main charge grid is clean with no foreign matter in the area.
  • Page 42 3. Replace the engine control board. If the Error 32 is intermittent: 1. Replace the accumulator cleaner clutch shaft and the cleaning board 2. Replace the imaging unit. 3. Replace the engine control board. Phaser 740 and 750 Color Printers...
  • Page 43 4. Replace the engine control board. 5. Replace the fuser. 6. Replace the power supply and the fuser (Phaser 740 only). Power supply fan error. 1. Is +24 VDC being supplied to the fan from the control board connector CN30 pins 1 and 2? If it is, replace the fan.
  • Page 44 5. Does the gear train of the paper eject rollers rotate properly? 6. Inspect the wiring harness leading from the paper feed motor to connector CN20 of the engine control board. 7. Replace the paper feed motor. 8. Replace the engine control board. Phaser 740 and 750 Color Printers...
  • Page 45 2. Ensure that the Lower Tray Assembly is the correct model for the printer. Lower Tray Assemblies for earlier model printers, such as the Phaser 560, will not work with the Phaser 740. Program ROM Checksum error. 1. Replace the engine control board.
  • Page 46 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 board. 4. Replace the engine control board. Phaser 740 and 750 Color Printers...

  • Page 47: Normal Power-Up Self-Tests

    W/R SCSI Register 5. Replace the image processor board W/R LCA Registers 6. Replace the font SIMM (if W/R CDU Register installed on Phaser 740) CDU Data Compression 7. Replace the image CDU Data Decompression processor to engine board cable DMA Address Test 8.
  • Page 48 Phaser 740 and 750 Color Printers...

  • Page 49: Troubleshooting

    Troubleshooting This topic discusses troubleshooting the printer. Troubleshooting is discussed with two approaches: A step-by-step verification procedure that systematically confirms that particular components of the printer are properly functioning until a problem is found. A symptom/cause scheme that lists particular printer failures and error codes and their possible causes.

  • Page 50: Print Engine Troubleshooting

    Observe that the Ready message is displayed on the front panel. If it is not, go to the later topic “Verifying power supply operation” on page 39. 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).

  • Page 51: Verifying Printer Operation By Using Its Self-Test Print

    Verifying printer operation by using its self-test print If not already on, turn on the printer. If the printer does not power up, or does not initialize, or the printer initializes but the motors do not run properly, go to the next topic “Verifying power supply operation.”...

  • Page 52: Measuring The Dc Voltages (Test Points)

    “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. Phaser 740 and 750 Color Printers...

  • Page 53: Inspecting The Power Supply Fuses

    Inspecting the power supply fuses The 115 VAC power supply features a 8 A and a 10 A fuse. The 220 VAC power supply fuse uses a 4 A and a 5 amp fuse. Turn off the printer. Remove the power supply. Remove the power supply cover to access the fuses.

  • Page 54: Testing For A Shorted Motor

    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. Phaser 740 and 750 Color Printers...

  • Page 55: Media Jams And The Paper Path

    Media-based problems Media problems Test the paper path using the service tests described in “Phaser 740 service tests” on page 77 or “Phaser 750 service tests” on page 80. Check that the correct type of media is being used. The customer should be using a quality laser printer paper.

  • Page 56: Multiple-Sheet Pick

    Does the paper empty flag properly interrupt the paper empty sensor on the paper feeder board? Open the left door to observe the flag in action. Test the sensor using the service tests described in “Phaser 740 service tests” on page 77 or “Phaser 750 service tests” on page 80.

  • Page 57: No Paper Feeder Installed

    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. Test the sensor using the service tests described in “Phaser 740 service tests” on page 77 or “Phaser 750 service tests” on page 80.

  • Page 58: Jams

    The spring tension should measure about 65 grams when the roller end is in the middle of its travel in its slot. Does the pick-up roller clutch work properly? Phaser 740 and 750 Color Printers...

  • Page 59: Paper Jams At The Second Bias Transfer Roller

    Try printing using a different paper tray. Transparency film. Do not use transparency film in the lower tray of the Lower Tray Assembly. Paper jams at the second bias transfer roller Clean the intermediate rollers. Is the transfer roller correctly installed? Is the transfer roller moving up for image transfer when it should? Does the paper jam sensor flag properly interrupt the sensor? Check the wiring harness of the paper jam sensor leading to CN607 of the paper feeder board.

  • Page 60: Fuser Jams

    Does the paper exit sensor flag properly actuate its sensor? Inspect the wiring harness leading from the cartridge sensor/eject unit to CN308 of the engine driver board. Replace the cartridge selector/eject unit. Replace the engine control board. Phaser 740 and 750 Color Printers...

  • Page 61: Multi-Purpose Tray Feed Jams

    Clean the rollers inside the auto-duplex unit. Inspect the duplex unit for foreign objects such as a shard of paper. Does the duplex unit’s clutch operate correctly? Refer to “Phaser 740 service tests” on page 77 or “Phaser 750 service tests” on page 80.

  • Page 62: Other Problems

    No fuser installed message when it is Ensure that the fuser is correctly installed. Check the fuser’s connection and wiring. Check the wiring harness leading to the fuser power connector. Replace the fuser. Replace the engine control board. Phaser 740 and 750 Color Printers...

  • Page 63: No Fuser Roll Installed Message When It Is

    No fuser roll installed message when it is Ensure that the fuser roll is correctly installed. Check the fuser’s connection and wiring. Check the wiring harness leading to the fuser power connector. Replace the fuser. Replace the engine control board. Front door open when it is closed Inspect that the front door’s interlock for damage.

  • Page 64: High Temperature Error

    Ensure a 110 volt fuser has not been installed in a 220 volt printer; it will damage the power supply thermistor and require the power supply be replaced. Replace the fuser. Replace the engine control board. Phaser 740 and 750 Color Printers...

  • Page 65: Front Panel Cycling Between Ready And Warming Up

    Erratic printer behavior 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.

  • Page 66: Printing And Print Quality Problems

    Swap that problem repeated images to fuser have less than supply item more than once determine 20% life on each which supply remaining? page? item to replace Troubleshooting print quality problems Phaser 740 and 750 Color Printers...
  • Page 67 Cut about 3 inches off the length of a piece of paper. Place it in the MPT and select the MPT as the default tray. Request a Diagnostic Test Page. The printer will display a jam message. Open the left Make an side door;...

  • Page 68: Blank Print

    Inspect the main charge grid for a broken corona wire. Replace the main charge grid. Replace the high-voltage board Margins are white, print is black. Replace the image processor board. Replace the engine control board. Phaser 740 and 750 Color Printers...

  • Page 69: Single Color Mottled Or With Non-Uniform Density Streaks

    Single color mottled or with non-uniform density streaks If a single color displays a mottled appearance or if a single color shows many vertical streaks of varying densities, then that color’s toner cartridge is running of toner. Replace the cartridge. 9922-93 Dark vertical line in print, single color If the line is of one primary color, then the...

  • Page 70: Vertical Line Or Scratch In Print, Single Color

    12.1 cm (5 in.) apart and match the defects on the print, then the problem is a scratch on the fuser roller. Replace the fuser. Lastly, a protrusion of some kind in the paper path could be scratching the print. Phaser 740 and 750 Color Printers...

  • Page 71: Small, Repeating Light Dot In One Color In-Line With Each Other

    Small, repeating light dot in one color in-line with each other This can usually be traced to a dent-like defect in the developer roller of the toner cartridge in question. Measure the spacing between the spots. The distance between the repeating spots indicates the source of the problem.

  • Page 72: Single Light, Horizontal Line In All The Prints

    fingerprints and rubbing lightly with a cotton-tipped swab. Don’t remove the toner. The printer will remove the toner with its cleaning blade. Remember not to expose the imaging unit to ambient light for more than a minute. 9697-50 Phaser 740 and 750 Color Printers...

  • Page 73: One Or More Dark Vertical Line In All Colors

    One or more dark vertical line in all colors This can often be traced to a dirty scorotron charger (main charger) corona wire. Contamination (dust or toner) interferes with the flow of electrons from the wire to the photoconductive drum. Toner is then transferred to the area of low electron charge and consequently to the accumulator belt and finally the print.

  • Page 74: Dark, Irregular, Vertical Streaks And Smears On The Entire Page

    Replace the toner cartridge selector/eject unit. Lastly, poor electro-mechanical contact my be the problem, although this usually shows itself as light, horizontal streaks and lines. Replace the toner cartridge biasing assembly. 9697-53 Phaser 740 and 750 Color Printers...

  • Page 75: Light, Faded, Pale Prints

    Light, faded, pale prints The imaging unit is old or has been exposed to too much room light. Replace the imaging unit. Is the paper in good condition and appropriate for a laser printer? Is the printer printing within its environmental specifications? For the Phaser 750 printer, print the built-in Diagnostic Test Page;...

  • Page 76: Single White Spot Appear In The Same Place On The Print

    Replacing the imaging unit corrects this problem. Rarely, a sheet of paper can become folded and jam in the imaging unit, smudging the image. 9322-90 Phaser 740 and 750 Color Printers...

  • Page 77: Missing Primary Color

    Missing primary color Replace the toner cartridge of the missing color. Determine if the cartridge selector is pushing the toner cartridges into contact with the photoconductive drum. Check the wiring harness leading from the cartridge selector/eject unit to CN308 of the engine control board.

  • Page 78: Dirty Background

    Is the paper in good condition and appropriate for a laser printer? Is the printer printing within its environmental specifications? Run 10 to 20 blank sheets of paper through the printer. Replace the fuser unit. Phaser 740 and 750 Color Printers...

  • Page 79: Image Is Skewed On The Paper

    Image is skewed on the paper Is the paper in good condition and appropriate for a laser printer? Is the printer printing within its environmental specifications? Swap the tray that the affected print originates from. Ensure that the paper feeder is properly installed. Inspect its paper pick roller. Look for obstructions in the paper path.

  • Page 80: The Print Is Wrinkled

    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 tabs slightly to correct the problem or replace the tray. Phaser 740 and 750 Color Printers...

  • Page 81: Macintosh Printing Problems

    In the Print dialog box, make sure that the Color/Grayscale option has been selected. Make sure that the Phaser 740 or 750 printer icon was selected in the Chooser. Try printing the job again. Check the version of your LaserWriter driver to ensure that it is version 8.0.x or higher.

  • Page 82: Printer Isn't In The Chooser

    Ready to Print mode without printing an image. From the printer driver, under the printer's set up options, set TRANSMISSION RETRY = 850. Phaser 740 and 750 Color Printers...

  • Page 83: Interpreting The Supplies Page

    Interpreting the Supplies Page Several pieces of information about each of the printer’s consumables are listed on the Supplies Page. Life remaining gauges Gauges indicate the remaining life of each consumable. The toner cartridges indicate if more than enough toner remains to print more that 500 prints at 5% coverage. The other consumables’...

  • Page 84: Print Count Conversions

    (10 x 16 (1 x 4096) (3 x 256) (15 x 16) (10 x 1) 4096 Add the column values together 4096 + 768 + 240 +10 = 5114 13FA’s decimal equivalent is 5114 Phaser 740 and 750 Color Printers...

  • Page 85: Service Tests And Adjustments

    Service Tests and Adjustments This topic discusses using the front panel’s 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.

  • Page 86: Printing Test Prints On The Phaser 740 Printer

    Printing test prints on the Phaser 740 printer The prints printed via the front panel are generated by the image processor. While the printer is idle you can use the front panel to print an image stored in the image processor such as the Configuration Page.

  • Page 87: Printing Test Prints On The Phaser 750 Printer

    Printing test prints on the Phaser 750 printer The prints printed via the front panel are generated by the image processor. While the printer is idle you can use the front panel to print an image stored in the image processor such as the Configuration Page.

  • Page 88: Embedded Pages (Phaser 750 Printer Only)

    Print. Most of the embedded pages are located in the Help Pages menu item. The Network Setup embedded page is located in the Configuration menu as well as the Help/ Printer Administration Menu item. Phaser 740 and 750 Color Printers...

  • Page 89: Printer Self-Diagnostics

    Use the Exit button to stop a test as well as return to the main menu. To exit Service test mode turn the printer off and on. Phaser 740 print engine service test descriptions Category...
  • Page 90 Multi-purpose Tray Motor Black Cam Motor/sensor Yellow Cam Motor/sensor Magenta Cam Motor/sensor Cyan Cam Motor/sensor Black Cam Motor/sensor Clutches Black Cartridge Clutch Yellow Cartridge Clutch Magenta Cartridge Clutch Cyan Cartridge Clutch Registration Clutch Auto-duplex Unit Clutch Phaser 740 and 750 Color Printers...
  • Page 91 Engine (cont.) Solenoids Transfer Roller Solenoid Cleaning Blade Solenoid Face Up/down Solenoid Top Pick Solenoid Middle Pick Solenoid Bottom Pick Solenoid Fuser Roll Solenoid Auto Duplex Unit Bypass Solenoid Command Engine Main Motor On/off Yellow Roller On/off Paper Feed Motor On/off Cyan Roller On/off Cartridge Motor On/off Magent Roller On/off...

  • Page 92: Phaser 750 Service Tests

    Do you want 1 sheets or continuous feed (single, continuos)? Do you want to duplex (1-sided or 2-sided)? Set Margins This menu item lets you adjust the printer’s top margin and the front and back left margins. Phaser 740 and 750 Color Printers...
  • Page 93 Sensors This menu item tests you test the printer sensors by manually toggling them and watching the results on the front panel Front/Right Door Switches: closed/open Left Access Door: closed/open Lower Feeder Door: closed/open Fuser installed: installed/absent Fuser Roll Installed: installed/absent Fuser Roll: new/used Imaging Unit Installed: installed/absent Accumulator Belt Tension Set: set/unset...
  • Page 94 Stop prompt before ending the test. Transfer Roller Solenoid Cleaning Blade Solenoid Face Up/Down Solenoid Top Pick Solenoid Middle Pick Solenoid Bottom Pick Solenoid Fuser Roll Solenoid Auto-Duplex Unit Bypass Solenoid Phaser 740 and 750 Color Printers...
  • Page 95 Command Engine This menu item lets you run individual engine commands to test printer subsystems. After starting one of the Motor test ON, scroll to the motor test that turns it OFF. Main Motor On/Off Paper Feed Motor On/Off Cartridge Motor On/Off Laser Motor On/Off Lower Feeder Motor On/Off MPT Motor On/Off...

  • Page 96: Print Engine Calibration

    For the Adjust Each Color menu item, press Print to print 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 740 and 750 Color Printers...

  • Page 97: Manual Color Correction Reference Print

    Color Reference Page Cyan Magenta Yellow Black 9698-18 Manual color correction reference print Overlay and compare the pre-printed primary Color Density Samples in the Color Printer User Guide to the selected colors on the midline of the print. If any primary color does not match, overlay and compare to an alternate color.

  • Page 98: Calibrate For Paper (Phaser 750 Only)

    Phaser Color Printer Calibrate for Paper helps you adjust the printer for the grade of non-Tektronix paper you print on, as well Calibrate for Paper menu as compensate for the current environmental conditions. This adjustment applies only to Standard and Enhanced mode printing;...

  • Page 99: Cleaning And Maintenance

    Cleaning and Maintenance Service preventive maintenance procedure Whenever you check, service, or repair a printer, you should perform the following procedures. Cleaning the printer, as outlined in the following steps, assures proper operation of the printer and reduces the probability of having to service the printer in the future.

  • Page 100: Recommended Tools

    Clean the laser window with puffs of air from the suction bulb. Alternately, you can vacuum the window clean. Wipe off the pre-exposure lamp bezel and the pre-transfer lamp bezel with a lint-free wipe. Vacuum out the interior of the printer. Phaser 740 and 750 Color Printers...

  • Page 101: Lubrication

    Carefully clean the area around the second bias transfer roller’s cleaning roller for impacted toner. Remove the second bias transfer roller Tap on the cleaning roll cover to knock the toner loose from that area. 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.
  • Page 102 Phaser 740 and 750 Color Printers...

  • Page 103: Resetting Nvram

    Resetting NVRAM returns all the image processor's NVRAM-stored parameters, including the network card, to their factory defaults except the print counts and the Adobe firmware serial number. Phaser 740 printer To reset the image processor to its factory default values, follow this procedure: Turn the printer off.
  • Page 104 Phaser 740 and 750 Color Printers...

  • Page 105: Key Fru Disassembly

    Key FRU Disassembly This topic illustrates how to remove and replace key printer Field Replaceable Units (FRUs). Refer to the later topic “FRU List” on page 113 for a list of the printer’s FRUs. For more detailed removal/replacement procedures refer to the latest Color Printer Service &...
  • Page 106 Toner level sensor board Right side covers Rear Front Upper front cover Bottom front Front door Lower cover (lift printer (lift printer to to remove) remove) 740-7-2 Removing cabinet covers Phaser 740 and 750 Color Printers...

  • Page 107: Emi Shields

    EMI shields Fan EMI shield (Phaser 750) EMI shield Interconnect wiring shield 740-7-3 Removing the EMI shields Note Unplug the engine-to-image processor cable from the engine control board. Service Guide...

  • Page 108: Cartridge Selector/Eject Unit (Right Door)

    Unhook the tension springs at each end of the shaft from the engine frame. Note how they fasten to the frame and the right door. Beginning at the rear, remove the cartridge selector/eject unit. Phaser 740 and 750 Color Printers...

  • Page 109: Removing The Cartridge Selector/Eject Unit

    Cartridge selector/ eject unit (right door) Remove E-ring and bushing E-ring Keyed bushing Frame Spring Keyed Washer Washer Remove E-ring Disconnect wiring harness Washer Keyed Washer Spring Frame Remove E-ring Keyed bushing and bushing E-ring 740-7-7 Removing the cartridge selector/eject unit Service Guide...

  • 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. Paper tray sensor board Paper feeder Back-out stop screws 740-7-4 Removing the paper feeder Phaser 740 and 750 Color Printers...

  • Page 111: Multi-Purpose Tray Pick Roller

    Multi-purpose tray pick roller The multi-purpose pick roller should be replaced whenever the cork separator pad is replaced. The expected life of each is about 30k prints. With a small, narrow, flat-blade screwdriver, carefully release the snap-fit cover over the multi-purpose tray pick roller. Small access holes allow you to access the five retaining latches.

  • Page 112: Cork Separator Pad

    Note the spring is under tension. Remove the separator pad and spring. Install a new cork separator pad. Paper guide Retaining hooks Spring Cork separator pad Paper guide 740-7-6 Removing the cork separator pad Phaser 740 and 750 Color Printers...

  • Page 113: Laser Scanner

    Laser scanner Laser motor Shield driver board Remove three (Phaser 740 screws only) Laser Disconnect scanner wiring harnesses Separate these two wiring harnesses to minimize possible crosstalk 740-7-8 Removing the laser scanner and driver board Service Guide...

  • Page 114: Power Supply

    Power supply Power supply Disconnect wiring harnesses 740-7-9 Removing the power supply Phaser 740 and 750 Color Printers...

  • Page 115: Main Motor

    Main motor Paper feed motor Toner cartridge drive motor Cleaning board Cleaning board Toner cartridge drive motor Paper feed motor Main motor Removing the main motor, paper-feed motor, toner cartridge drive motor and cleaning board Service Guide...

  • Page 116: Toner Cartridge Drive Unit

    Left door open interlock switch Toner cartridge drive unit Left door-opened Home position interlock switch sensor Interlock switch cover 740-7-13 Removing the toner cartridge drive unit, home position sensor and the left door interlock switch Phaser 740 and 750 Color Printers...

  • Page 117: Temperature/Humidity Sensor Board

    Temperature/humidity sensor board Housing Lower rear Temperature/humidity cover sensor board 740-7-14 Removing the temperature/humidity sensor board Pre-exposure lamp Pre-transfer lamp Pre-exposure lamp Pre-transfer lamp 740-7-15 Removing the pre-exposure lamp and pre-transfer lamp Service Guide...

  • Page 118: Paper Feed/Fuser Gear Train

    Turn the printer on its right side. Remove the bottom chassis pan. Remove the frame cross member. Replace the desired gears. Gear train Gear train retainer Frame cross member 740-7-18 Removing the gear train Phaser 740 and 750 Color Printers...

  • Page 119: Tray Guides

    Tray guides Remove all consumables and vacuum the printer. Turn the printer on its right side. Remove the bottom chassis pan. Remove the frame cross member. Replace the desired gears. Tray guides 740-7-17 Removing the tray guides Service Guide...

  • Page 120: Engine Control Board

    740-7-11 Removing the engine control board Note 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. Phaser 740 and 750 Color Printers...

  • Page 121: High-Voltage Board

    High-voltage board Warning The edges on the inside of the card cage are ragged and sharp and can cut you. Caution When installing the wiring harness retainer, be careful not to press the wiring harness against the tip of a near by screw which will short the harness.

  • Page 122: Image Processor Board

    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.” Phaser 740 and 750 Color Printers...
  • Page 123 Phaser 750 Image processor board module 1 module 2 740-4-40 NVRAM Network card or hard disk drive PostScript ROM DIMM (updates standard PostScript ROM soldered to board) Battery (not replaceable) 3102-43 Removing the image processor board Swap components. If you are replacing the image processor board, transfer from the old board to the new board.
  • Page 124 Phaser 740 and 750 Color Printers...

  • Page 125: Fru List

    FRU List This topic provides a list of field replaceable units for the 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.

  • Page 126: Cabinet Frus

    Fig 1 Part Serial number Name and description parts number Effective Discont’d 118-9893-00 Front door with hinges (Phaser 740) 116-0852-00 Front door with hinges (Phaser 750) 118-9892-00 Upper front cover (operation panel) w/display board 118-9537-00 Right side cover rear 118-9208-00...

  • Page 127: Cabinet Frus

    Phaser 750 116-0850-00 Upper rear cover (110 VAC) 116-0851-00 Upper rear cover (220 VAC) 118-9888-00 Top cover with Phaser 740 logo 116-0849-00 Top cover with Phaser 750 logo 118-9979-00 Left side cover (Phaser 740) 116-0853-00 Left side cover (Phaser 750)

  • Page 128: Motors, Drive Units And Fans

    Intermediate compound gear 116-0940-00 Gear kit, Paper feeder/fuser White joint gear, Black compound gear, 4 fuser gears 118-9900-00 Main motor 118-9899-00 Paper feed motor (Phaser 740) 116-0862-00 paper feed motor (Phaser 750) 118-9524-00 Fan, fuser/toner cartridge Phaser 740 and 750 Color Printers...

  • Page 129: Motor And Fan Frus

    3102-37 Figure 3 Motor and fan FRUs Service Guide...
  • Page 130 Tray sensor board 118-9550-00 Left-side door-open switch 118-9519-00 Accumulator belt home-position sensor assembly 118-9918-00 Humidity/temperature sensor (Phaser 740) 116-0854-00 Humidity/temperature sensor (Phaser 750) 118-9909-00 Switch, main power (110 V) 118-9910-00 Switch, main power (220V) Phaser 740 and 750 Color Printers...
  • Page 131 3102-40 Figure 4 Sensor, switch and flag FRUs Service Guide...

  • Page 132: Circuit Board And Electronics

    671-5183-50 Code ROM DIMM, 750N 671-5184-50 Code ROM DIMM, 750P/DP/DX 671-5185-50 Code ROM DIMM, Kanji P750 671-4306-50 SCSI riser board, Phaser 740 only 671-3994-00 10/100BaseT Ethernet card, 740 only 671-4034-00 LocalTalk network card, 740 only 671-3932-50 Token Ring network card...

  • Page 133: Circuit Board And Electronic Frus

    3102-38 Figure 5 Circuit board and electronic FRUs Service Guide...

  • Page 134: Imaging And Paper Feed Components

    D-roller, paper feed 118-9912-00 Guide, paper tray, front 118-9911-00 Guide, paper tray, rear 118-9600-01 Accumulator cleaning blade clutch assy 118-9916-00 Duplex tray connector 119-5890-01 Duplex unit (service only) 119-5889-01 Lower Tray Assembly (no trays supplied) Phaser 740 and 750 Color Printers...

  • Page 135: Imaging And Paper Feed Component Frus

    3102-39 Figure 6 Imaging and paper feed component FRUs Service Guide...

  • Page 136: Kits And Other Hardware

    Front and rear guide springs Laser Scanner shaft and spring (under laser scanner) 116-0860-00 Hardware kit (Phaser 750) Screws E-rings C-rings Front and rear guide springs Laser Scanner shaft and spring (under laser scanner) Phaser 740 and 750 Color Printers...

  • Page 137: Supplies And Accessories

    Power cord, China 161-0307-00 Power cord, Argentina 006-7998-00 Conductive grease, silicon 006-7971-00 Imaging unit light shield/drape 650-3572-01 Carton bands (Rebanding kit) Phaser 740 Supplies and accessories Part Serial number Name and description number Effective Discont’d Supply 016-1684-00 Black toner standard cartridge...
  • Page 138 T-shirt transfer material, A-size, 100 sheets 063-3100-00 Phaser 740 User Guide (English) 063-3100-10 Phaser 740 User Guide (French) 063-3100-20 Phaser 740 User Guide (Italian) 063-3100-30 Phaser 740 User Guide (German) 063-3100-40 Phaser 740 User Guide (Spanish) Phaser 740 and 750 Color Printers...
  • Page 139 Phaser 740 Supplies and accessories Part Serial number Name and description number Effective Discont’d 063-3100-05 Phaser 740 User Guide (Russian) 063-3101-00 Phaser 740 Setup Guide (English) 063-3101-10 Phaser 740 Setup Guide (French) 063-3101-20 Phaser 740 Setup Guide (Italian) 063-3101-30 Phaser 740 Setup Guide...

  • Page 140: Phaser 750 Supplies And Accessories

    Cyan toner standard cartridge Supply 016-1805-00 Magenta toner standard cartridge Supply 016-1806-00 Yellow toner standard cartridge Supply 016-1803-00 Black toner extended cartridge Supply 016-1800-00 Cyan toner extended cartridge Supply 016-1801-00 Magenta toner extended cartridge Phaser 740 and 750 Color Printers...
  • Page 141 Phaser 750 Supplies and accessories Part Serial number Name and description number Effective Discont’d Supply 016-1802-00 Yellow toner extended cartridge Supply 016-1843-00 Fuser roll Supply 116-0329-00 Fuser cleaning pad Supply 016-1841-00 Color imaging unit Supply 016-1839-00 Fuser (110 VAC) Supply 016-1840-00 Fuser (220 VAC) Supply 016-1842-00 Transfer roller kit...
  • Page 142 (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, Asian Language 065-0587-00 Shipping box, replacement kit pallet, shipping carton, cushions, rebanding kit Phaser 740 and 750 Color Printers...

  • Page 143: Test Prints

    54 discusses solutions to problems revealed in the test prints. Phaser 740 printer test prints The Consumables Print consists of four 25% tint primary color bands and “gas gauges” for each consumable. Service Print 1 prints out four 25% tint full page fills, each page one primary color.

  • Page 144: Phaser 750 Printer Test Prints

    From the Help Guide, scroll to the Print Quality menu item Press Menu and scroll to the Help pages Press Menu and scroll to Solid fill Test Page. Press Print Solid Fill Test Page Power <--- ---> Print Error 3102-45 Phaser 740 and 750 Color Printers...

  • Page 145: Service Guide

    Phaser 740 printer Interpreting Service Print 2 Service Print 2 is useful for evaluating the condition of the imaging unit. Three prints are made: a 600 dpi print, a solid red fill print, and a 1200 dpi print. With a properly functioning imaging unit and printer, you should see the following: Diagonal lines.
  • Page 146 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 may also be shaped something other than round. Phaser 740 and 750 Color Printers...

  • Page 147: Wiring Diagram

    Wiring Diagram Laser driver (740 only) CN 1 CN 2 Front panel CN 1 CN 501 CN 502 Laser Interconnect board scanner J390 J490 CN 4 CN 29 CN 8 CN 2 Toner cartridge CN 7 CN 1 J601 SCSI J711 sub bias board 750 Image...
  • Page 148 Phaser 740 and 750 Color Printers...

This manual is also suitable for:

Phaser 750

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