designjet t520 service manual
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designjet t520 service manualThe procedures described in this service manual are to be performed by HP Certified service personnel only. Part numbers for printer service parts are located in Parts and diagrams on page 119. Service Manual All trademarks and copyrights in the published materials belong to their respective owners. Introduction ? Printer support ? Covers ? Roll covers ? Right-hand assemblies. Left-hand assemblies. Carriage assembly ? Paper path (front). Paper path (rear) ? Roll supports ? Sensor Kit ? Miscellaneous parts Introduction. The list of parts in this chapter include the nota tion CSR A or CSR B for parts that can be replaced by the customer. All other parts must be replaced by an engineer. See Customer Self Repair pa rts on page 145. ? For information on the preventive maintenance kits, see Preventive maintenance kits on page 320. ? Unless otherwise indicated, service parts are compat ible with all SKUs. If there is any limitation, it is indicated in the ta bles below as follows: ? 36: compatible with the 36-in T520. ? 24: compatible with the 24-in T520 and the T120. ? Pro: compatible with the T520. ? Basic: compatible with the T120. 126 Chapter 4 Parts and diagrams ENWW There are no separate kits for single components. CQ890-67053 Stand Assembly (36) 2 CQ890-67054 Stand Hardware Kit CSR A. Includes all s crews and tools to repair and mount the stand. ENWW Printer support 127 CQ891-67009 Right Roll Support with Cover (Basic) ENWW Roll covers 129 The Left Spittoon is available also in a separate kit (see Left-hand assemblies on page 132 ). 130 Chapter 4 Parts and diagrams ENWW There is no separate kit for the Power button PCA, always order the full Front Panel module.http://escueladeballet.com/fotos/3rd-gen-ipod-shuffle-manual.xml
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2 CQ890-67028 Ink Cartridge Cover Sensor Ink Cartridge Cover PCA Assembly on page 198 3 CQ890-67044 Left Spittoon Left Spittoon on page 310 Includes gloves 4 CQ890-67025 Power Supply SV Power Supply on page 202 5 CQ890-67023 Main PCA Pro Main PCA on page 205 Includes the Wireless PCA CQ891-67003 Main PCA Basic 6 CQ890-67033 Encoder Disk Encoder Disk on page 217 Includes instruction flier and gloves 132 Chapter 4 Parts and diagrams ENWW. The only warranties for HP products and services are set forth in the express warranty statement accompanying such products and services. View and Download HP Designjet T520 user manual online. HP Designjet T120 and T520 ePrinter Series - User s Guide. Designjet T520 Printer pdf manual. Reload to refresh your session. Reload to refresh your session. HP Color LaserJet Enterprise Flow M850z; HP Color LaserJet.HP Designjet 400 series printer (service manual).Reload to refresh your session. Reload to refresh your session. Part numbers Part numbers for printer service parts are located in Parts and diagrams on page 126. For some configurations, the latest firmware release is needed. Manual firmware upgrade is available in both printers via HP Designjet Utility (Windows) or HP Utility (Mac OS). The same firmware file is used for T120 and T520. ENWW Overview 1 10 Using the front panel The front panel is a touch-sensitive screen with a graphical user interface; it is located on the front left of the printer. It gives you complete control of your printer: from the front panel, you can print, view information about the printer, change printer settings, perform calibrations and tests, and so on. The front panel also displays alerts (warning and error messages) when needed. The front panel has a large central area to display dynamic information and icons. On the left and right sides you can see up to six fixed icons at different times. Normally they are not all displayed at the same time.http://www.gowithyourflow.nl/resources/3rb2056-1fw2-manual.xml To the right of the front panel is the Power key, with which you can turn the printer on or off. The key is illuminated when the printer is on. It flashes when the printer is in transition between on and off. Left and right fixed icons shows the status of the wireless connection: if the blue light is shining, the wireless connection is active. Press to return to the home screen. Press to view help about the current screen. Press to go to the previous item. Press to go to the next item. Press to go back to the previous screen. Press to cancel the current process. Home screen dynamic icons The following items are displayed only on the home screen. At the top left of the home screen is a message telling you which paper source is active. Press to view Web Services status and display your printer s address. Press to view connectivity status information and to perform network configuration. If a network cable is connected, is displayed instead. NOTE: It is not possible to use wireless and wired network connections simultaneously. Press to view ink information. 2 Chapter 1 Printer fundamentals ENWW 11 Press to change printer settings. Press to load, unload, and change options for roll paper. Press to change options for the multi-sheet tray, or to activate it. Press Press to load, unload, and change options for single sheets. NOTE: The active paper source is indicated by a slightly larger icon, with a white tick in a green circle. If the printer is left idle for some time, it goes into sleep mode and switches off the front-panel display. You can set a time between 5 and 240 minutes. The printer wakes from sleep mode and switches on the front-panel display whenever there is some external interaction with it. The following table shows an overview of the two types of support menu available, for more details see Entering the support menus on page 102.http://www.drupalitalia.org/node/72028 NOTE: The icons mentioned in this table will not be visible in the front panel: you must press the front panel in the places where they normally appear, as shown in the front panel illustration at the start of this section. Label Support menu: This can be used by customers under the guidance of phone call agents assisting remotely. Using this menu, customers can perform troubleshooting tasks and access printer information. Extended Support menu: Service engineers only Description From the Home screen, press the following icons one after the other. If there is a system error, you may not be able to reach the home screen. In this case, press the Power button and hold it down for 15 seconds. From the Home screen, press the following icons one after the other. Start-up sequence There are three states between power-on and the Home screen: 1. Electronics initialization 2. Firmware initialization 3. Mechanical initialization ENWW Start-up sequence 3 12 State 1: Electronics initialization 1. The front panel moves from flashing white light to turning dark. 2. The printer reads the firmware. NOTE: At this stage, if something is broken, it will not be possible to enter the Support menu. To diagnose what is happening, go to the front panel blank troubleshooting. (and add here the link). Subsequently, you can enter the Support menu to troubleshoot if necessary. State 2: Firmware initialization 1. The HP logo appears with a static bar. 2. Bundle board and ASICs are initialized. 3. The HP logo changes. State 3: Mechanical initialization 1. A basic check of servos 2. A check that the Scan Axis and Paper Axis are unobstructed by scraps of paper or other items 3. Paper and print system initialization Initialization flow summary Time (sec) Printer state Visual and acoustic information 0 Power on Using the Power button 10 Electronics initialization 4 Chapter 1 Printer fundamentals ENWW 13 Time (sec) Printer state Visual and acoustic information 27 Mechanical initialization 1.http://danijel-prevod.com/images/bosch-wfk-2401-parts-manual.pdf Basic check of servos Sound of the printer's motors 2. Scan Axis, Paper Axis check Carriage movement 3. Paper and print system initialization Paper movement 45 Ready state NOTE: Initialization lasts around 45 s if there was a clean power-off (using the front panel Power button). If there was a dirty power-off, the printer will require more time to inititialize (to ensure that the printhead is in a good state). Subsystems Covers Functionality These parts cover the printing mechanism and act as protection from potential knocks or dust. They also prevent the customer from coming into contact with unsafe parts during the operation of the printer. Finally, the covers complement the style and aesthetics of the printer. The T120 and T520 printers have covers of different colors, and a different configuration of the roll cover, as seen in the following table: HP Designjet T120 HP Designjet T520 Roll Cover Not Present Transparent Top Cover Opaque Black Transparent Output Platen Black-Blackberry Black-Olive Output Tray Black-Olive Black-Olive ENWW Subsystems 5 14 Components Other than the cosmetic aspects of the covers, there are several sensors related to the subsystem covers. The sensors are designed to detect the status of the cover, open or closed. The Ink Cartridge Cover Sensor senses whether the Ink Cartridge Cover is open or closed. Opening the Ink Cartridge Cover starts ink cartridge replacement automatically. The sensor is hosted in the printer chassis. The Central Cover hosts the Top Cover Sensor to sense whether the Top Cover is open or closed. IMPORTANT: Be careful to avoid damaging the sensor while removing the Central Cover. See Central Cover on page 172. The Output Tray Sensor senses whether the Output Tray is open or closed. To avoid paper jams while printing on roll paper, the tray should be closed. IMPORTANT: Damage to the covers can cause the sensors to malfunction.http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/162706114c713c---boss-rc-2-loop-station-effect-pedal-manual.pdf Removal and installation In order to proceed with the removal and installation of the covers its important to bear in mind their cosmetic aspects, some surfaces of the covers have a glossy finish, which requires maximum attention as they are very delicate and susceptible to scratches and finger marks. It is recommended that you use gloves for any service operation involving the covers. Due to the layout of the covers, it is important to bear in mind that some parts require removal before you can remove a specific cover. Right Cover requires Front Cover removal. Left Cover requires Front and Ink Cartridge Cover removal. Roll Cover requires Right and Left Cover removal. 6 Chapter 1 Printer fundamentals ENWW 15 Related tests Electronics Top Cover requires Front Panel assembly removal. Central Cover requires Right Cover and Left Cover removal. Sensor tests for the Top Cover, Ink Cartridge Cover, and Output Tray operation. See Diagnostics menu on page 106. Other than the sensor boards, there are no electronics related to this subsystem. Printhead health systems: Service Station, Primer system, and Left Spittoon Functionality Components The service station is responsible for printhead maintenance. It takes action to clean ink residues and service ink nozzles, and prevents ink from drying in critical zones by capping the printhead once printing has finished. The Primer system provides the necessary air pressure to the printhead to perform initialization. This system also provides pressure to the necessary printhead service operations (by boosting air which pushes ink out through the printhead nozzles, cleaning residues of dried ink and other particles). ENWW Subsystems 7 16 Item Off-axis coupling assembly Prime Pump Primer Tubes Function This is a rubber spring link located on the side plate of the scan axis (area where the Carriage moves). It links the primer system with the Carriage when the Carriage is located in its maximum left position.dispatchplus.com/ckfinder/userfiles/files/boss-ev-5-expression-pedal-manual.pdf This system ensures the pressure from the primer reaches the printhead for nozzle servicing. This is an air pump which provides the necessary pressure for printhead servicing and nozzle repair. The Prime Pump is suspended on a rubber holder to minimize the noise that the Prime Pump makes while in operation. The tubes take the air from the Prime Pump to the off-axis coupling. There is a T link feature connected to a tube that goes inside the service station; the purpose of this tube is to release the air pressure from the system. The tube is pinched by the shuttle of the service station when reaching a certain position; this action closes the circuit and allows the system to be pressurized. With the movement of the service station the tube is released, allowing the pressure from the system to escape. Notes and considerations Any leakage in the primer system will generate poor or no priming, this will affect nozzle heath (or even cause the printhead startup to fail). Bear in mind that the system is not just for the Prime Pump and tubes, the prime pressure is transmitted via the off-axis coupling to the Carriage and from there to the printhead assembly and from there to the cartridges. Electronics NOTE: There is no pressure sensor in the system. The Prime Pump operates at a certain time to reach a specific pressure level, the system is depressurized by releasing the pinching of the release tube in the Service Station (by moving the service station). NOTE: It is important to ensure the Carriage reaches the maximum left position; if not, the off-axis coupling will not connect the Prime Pump with the Carriage. Also, the coupling is made of a rubbery material, degradation of the material will affect Primer performance due to air leaks. The control driver of the Prime Pump is located on the remote controller board located on the right-hand side of the printer. There is no encoder for the Prime Pump.unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/162706126e7cba---boss-rc-2-instructions-manual.pdf This pump is managed only by a DC motor activated for a certain period of time to create the required priming pressure. 8 Chapter 1 Printer fundamentals ENWW 17 Service Station system Functionality Item Printhead Wipers Printhead Cap Service Station Motor system Bottom Spittoon Top Spittoon Function These are rubber paddles that are passed through the nozzle plate of the printhead with the Service Station movement. They clean the excess ink from the nozzle plate with a rubbing action. This caps and protects the nozzles from drying when they are not printing. This moves the shuttle with the wiper and the cap so that these two items can perform their functions. The system is composed of a DC motor and an encoder disk with an encoder sensor to read the motor position. This part acts as an ink reservoir when spitting and nozzle health operations are performed. It contains diapers that prevent the ink becoming liquid. This seals the reservoir and completes the main body of the service station. ENWW Subsystems 9 18 Item Absorber Base Wiper Shuttle Function This is made of foam and is located under the service station on top of the printer structure. It works as an additional diaper in case ink spills out of the Service Station. This mobile part is propelled by the motor that contains the Wiper and Cap. Depending on the position, spitting, wiping, capping, or priming can take place: Spitting: The printhead spits a little ink into the spittoon to get the nozzles conditioned and ready for the next swath of printing. Wiping: A physical action to pass the rubber wipers through the printhead nozzles. Capping: Parking the printhead to maintain nozzle heath during printer inactivity, with a surrounding seal. Priming: Squirts ink through the nozzles to clean and unblock them. Notes and considerations Electronics The service station is offered as a complete service part for full replacement.https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16270613758cd2---boss-rc-50-loop-station-manual.pdf The failures from this subsystem are usually related to the mobile parts: motor or encoder failures that prevent the shuttle from reaching the positions for capping or uncapping. With the life primer system, tube pinching can present an issue (although it is designed to function for the life of the printer). When the Service Station is replaced, it is mandatory to reset the Preventive Maintenance Kit for the Service Station, this will trigger a simple calibration that is done with the Service Station on the next printer startup. The calibration measures the length of the Service Station (shuttle front bump to shuttle rear bump), which ensures a correct capping position. All the controlled movements for the Service Station are done from the remote-controlled board located on the right-hand side of the printer. Issues with the Service Station can also be related to this control board. Paper path and Cutter Functionality The paper path This comprises all the elements of the printer in contact with the paper, designed to hold, move, and manage it in a controlled manner in order to print. Paper can be loaded using a roll, which is mounted on the rear spindle, or single sheets loaded from the Multi-Sheet Tray, or single sheets loaded singly. The paper passes from its source (Roll, Single Tray, or Multi-Sheet Tray) until it touches the Out-Of-Paper Sensor, when the printer detects the presence of the paper and proceeds to load it. 10 Chapter 1 Printer fundamentals ENWW 19 To perform the paper feed, the printer catches the paper in between the Drive Roller and the Pinch Rollers (Pinch Rollers are spring-loaded pushing the paper down on top of the Drive Roller), then the paper is pushed forwards on top of the Print Platen in the print zone, which is where the printing operation is performed. The paper advance is provided by a motor that moves the Drive Roller.www.digitekprinting.com/bbaexchange/webroot/admin_upload/files/boss-ev-10-manual.pdf The exact position of the Drive Roller and hence the paper is controlled by an Encoder Disk located on the roller axis. Electronics The printed paper then passes between the Output Shaft and the Starwheels (which keep the paper tension as flat as possible for printing) to exit on the Output Platen, where it is held in case of cut sheet or is cut to fall on the output basket in the case of roll paper. The Output Shaft is designed to over-advance the Drive Roller movement slightly, and hence create the necessary paper tension to keep the paper as flat as possible. The Starwheels are spring-loaded and are designed to create force on top of the paper, this is done so as to leave the paper unmarked and at the same time allow the Output Shaft force to be appropriately transmitted. In the Roll configuration, the rewinder module generates back force while printing to facilitate paper control. A key electrical element of the paper path is the Paper Sensor (also known as the Out-Of-Paper Sensor or OOPS). This sensor is located at the beginning of the Print Platen; it detects paper insertion for roll load and single-sheet load. In the paper-path driving system, the only electrically active element is the Drive Roller. The Drive Roller is impelled by the drive roller motor and it contains an Encoder Disk on the axis to determine its position. The Encoder Disk is read by two sensors. One, the encoder sensor, designed to read the encoder, counts the Encoder Disk (the Encoder Disk outer marks) and another one, the encoder index sensor, determines the start position (the 0 position) of the Drive Roller by reading the inner thicker lines of the Encoder Disk. NOTE: Every time the printer starts up, it searches for the 0 position of the Drive Roller. If this search fails (which means that the index sensor is faulty), the printer will give a system error and will be unable to initialize. ENWW Subsystems 11 20 The roll paper input system Functionality This system keeps the roll in place and ensures controlled rotation. It contains the rewinder, which rewinds the paper for paper ejection, and provides an opposite tension to the paper advance for better paper control. The Left Support encloses the Rewinder Motor and Encoder, containing a set of gears that transmit the Rewinder motion to the spindle. There is a V-shaped spring to load and fix the spindle in position. The Right Support holds the spindle in position to rotate over passive rollers. In the T520, the right support also contains the dampers for the roll cover opening movement control (the internal dampers perform a braking action preventing sudden movement during the opening operation). NOTE: The right support for the T120 models does not contain dampers. The T120 and T520 have two different assemblies from the factory, nevertheless both can be replaced by the damper option of T520 (identical from the external point of view), and there is only one service part available. The spindle is designed to hold the paper rolls, and receive the motion from the rewinder gear in the Left Support. It consists of a central bar and two hubs; the right hub is fixed to determine the right-side loading position of the paper, and the moveable left hub adjusts to the width of the paper. The Roll Cover (T520 only) shields the roll from dust. NOTE: The Roll Cover is a passive part, with no sensor: the printer does not know its status. 12 Chapter 1 Printer fundamentals ENWW 21 Electronics The Rewinder Motor and Encoder system are directly controlled by the Main PCA. The paper output system Functionality The system ensures that the printed paper follows a controlled path and acquires a certain shape in order to be delivered properly to the user. It also has a cosmetic function. The system includes a set of three telescopic trays, which are extended to collect the cut-sheet paper printed from the Multi-Sheet Tray. There are two roll-paper control tabs that are deployed automatically when the telescopic trays of the Output Tray are in the closed position. This is a purely mechanical action as the tabs are pushed up by the output trays when closed. The purpose of those tabs is to control the shape of the roll paper when coming out of the paper path. The Front Cover is located underneath the Output Platen. Electronics The only electronic component related to the Output Platen is the Output Tray Sensor located underneath the output trays. The sensor is activated when the three output trays are fully closed. The sensor cable is routed via the front of the machine and is directly connected to the main PCA. The Cutter system The Cutter cuts the paper after the print has completed. It comprises 1) a cutter module that cuts the paper with two rotary blades, 2) a Cutter Bridge attached to the Carriage that catches and releases the Cutter to perform the cutting operation and then to leave it in capping position, 3) a Cutter Guide that holds the movement of the Cutter along the printer width. ENWW Subsystems 13 22 In order to operate the Cutter, it needs to be in the parked position. If not, the Cutter will not be engaged by the Cutter Bridge and the printer will not perform the cutting action. Whenever the printer initializes, it performs a parking movement with the Carriage to ensure that the Cutter is left in the appropriate position. The printer does not have any feedback about the cutter engagement action. Hence, if for any reason the engagement is not performed correctly, the printer will continue operating as if the engagement has occurred. How activation works 1. Pre-activation phase: The Cutter Engagement Feature of the Bridge gets into the funnel of the Cutter Module grooving the Cutter to ensure the correct position for activation. 14 Chapter 1 Printer fundamentals ENWW 23 2. Hook catching: The cutter bridge continues moving to the left pushing down the cutter hook (in orange), after the left side of the cutter bridge passes the Carriage stops and the cutter hook returns to its position due to its spring motion. 3. Cutter action: The left feature of the cutter bridge pushes the cutter to the left, performing the cutting operation. ENWW Subsystems 15 24 How deactivation works 1. Disengagement: Hook Bridge changes direction moving now from right to the left, so that Cutter Hook slides out of the Cutter Catch Feature. 2. Move-away action: the Cutter Hook deactivates from the bridge by passing in front of it. Accessory tray and right gear module Functionality The accessory tray holds and loads the cut-sheet paper for the printer. The accessory tray itself is a completely mechanical system with no electronics or motors. All the motion drives for both picking and paper drive are or created or transmitted by the Right Gear module located on the right-hand side of the printer, behind the Service Station. 16 Chapter 1 Printer fundamentals ENWW 25 The Right Gear module has two main functions. It contains the motor encoder and gear drive system for the picking mechanism, and it contains the gear train system to transmit the movement from the drive roller to the accessory tray. ENWW Subsystems 17 26 Right Gear module functionality The Right Gear module has two different functions associated with the Multi-Sheet Tray. 1. The paper drive from the Multi-Sheet Tray into the platen area (until the cut sheet reaches the drive roller area). The intermediate shaft in the Multi-Sheet Tray is driven by the drive roller through a gear train inside the Right Gear module. The intermediate shaft meshes with the Multi-Sheet Tray gear interface (red gear in the picture) at the end of the train. A swing arm engages the gear train when the Drive Roller is driven backwards (as shown in the picture), driving the intermediate shaft forwards. When the Drive Roller is driven forwards, the swing arm disengages from the gear train and the intermediate shaft is not driven. This action is to prevent reverse paper movement to be transmitted to the Multi-Sheet Tray. 18 Chapter 1 Printer fundamentals ENWW 27 2. Picking functionality drive system The Multi-Sheet Tray pick drive assembly is mounted in the right side gear module. The assembly contains a DC motor and pinion, belt, cluster pulley, and gear. An encoder (not shown, but it is located in front of the white gear shown in the picture) is read by the encoder sensor (in red in the picture) to servo-control the pick drive. Right Gear and Multi-Sheet Tray interface The two gears from the Right Gear module interface with the Multi-Sheet Tray by location once the Multi-Sheet Tray is locked in position; both gears can be considered fully engaged. Multi-Sheet Tray functionality The function of the Multi-Sheet Tray is to pick and feed the cut-sheet paper until the paper is grabbed by the drive roller (drive roller and pinch system). The actions performed for those operations are (1) sheet pick and (2) sheet input. 1. Sheet pick This movement is transmitted through a lateral gear chain in the Multi-Sheet Tray towards the swing arm, which is pushed towards the paper, and the picking mechanism located at the bottom of the Multi- Sheet Tray, which separates the top sheet from the stack of pages. ENWW Subsystems 19 28 20 Chapter 1 Printer fundamentals ENWW 29 ENWW Subsystems 21 30 2. Sheet input Once the paper is in the intermediate shaft area, the drive roller is rotated, impelling the intermediate shaft through the right gear module, pushing the sheet towards the inside of the printer, so that it will be grabbed by the drive roller and main printer pinch system, proceeding with the standard paper drive motion (as with roll paper). NOTE: The printer considers the load successful if, after the picking and sheet input procedures, the sheet is detected by the printer's Paper Sensor. Hence, a correct function of the Paper Sensor is required also for the accessory tray loading action. Electronics NOTE: It is possible to reproduce the picking and loading motions by extracting the Multi-Sheet Tray and rotating the gears with the hand, to validate module performance and troubleshoot any possible mechanical issues. NOTE: Different elements of the Multi-Sheet Tray are not serviceable, the whole module requires replacement in case of failure. Both the encoder and motor-drive system are managed by the Bundle PCA located on the right-hand side of the printer. 22 Chapter 1 Printer fundamentals ENWW 31 Scan Axis system: Carriage and Carriage impelling This system moves the Carriage from left to right and right to left of the printer on top of the paper in a controlled manner to perform printing, cutting, paper detection, and any other Carriage movements for servicing and final capping process. The system comprises the Carriage sliding on the scan axis rod, on which rotates and whose position is determined by a cam mounted on the Carriage, which slides touching the bottom surface of the antirotation rail. There are two trailing cables mounted one on top of the other, which connect the Carriage with the main electronics control board. A scan-axis encoder strip is needed for the Carriage to determine its position, and a Carriage Motor which impels the Carriage via a belt. The trailing cable is held in position by a plastic holder, which clips onto the scan axis structure. A spring-loaded loop ensures follow-up action of the cables with the Carriage movement. Two plastic cable sliders are also placed to ensure minimum contact of the trailing cables with the scan axis structure.