Hewlett Packard DesignJet 430-450C-455CA free download

File name 01 - 430Front%20Page.pdf

Service Manual HP DesignJet 430 HP DesignJet 450C HP DesignJet 455CA Printers Using this Manual Purpose This manual contains information necessary to test, calibrate and service: D D D HP DesignJet 430 printers (models C4713A and 4714A). HP DesignJet 450C printers (models C4715A and 4716A). HP DesignJet 455CA printers (models C6080A and C6081A). For information about using these printers, refer to the corresponding user and quick reference guides. Readership The procedures described in this manual are to be performed by HP certified service personnel only. Part Numbers Part numbers for plotter options, accessories and service parts are located in chapter 7. Conventions This manual contains information for the color HP DesignJet 430, 450C and 455CA printers. A small arrow ' is used to indicate other parts of the Service Manual or User's Guide where you can find information related to the topic you are consulting. ii Using this Manual HP DesignJet 430, 450C and 455CA Printers

File name 02 - 430Contents.pdf

Contents Using this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x 1 Troubleshooting 12 12 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 4 4 4 4 5 6 6 7 7 8 8 Is the Printer Using the Latest Firmware Revision? . . . . . . . . . . . . . . . . . . . . . . . Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What Can I do when a System Error Code Appears on the Front Panel Display? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Have you performed a Service Test on the Failed Component/Assembly? . . . . . . . Have you Performed the Accuracy Calibration? . . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do to Solve Print Quality Problems? . . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Line Sensor has Problems Detecting Media? . . . . . . . . . . . What can I do if the Carriage is Noisy? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Cover Sensor isn't Working? . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Carriage Assembly has problems parking in the Service Station? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Printer continuously rejects Cartridges? . . . . . . . . . . . . . . . What can I do if the Media continuously crashes? . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Printer does not Power ON? . . . . . . . . . . . . . . . . . . . . . . . . . . What can I do if the Printer has problems with Media Loading? . . . . . . . . . . . . . What can I do if the Printer has problems with the Cutter? . . . . . . . . . . . . . . . . . What can I do if the Bail Mechanism Fails? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What is an EEROM error? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 System Error Codes Important Information on Troubleshooting Error Codes . . . . . . . . . . . . . . . . . . . 2 2 System Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 3 User Messages User Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 HP DesignJet 430, 450C and 455CA Printers Contents iii 4 Service Tests 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 2 2 2 3 3 4 6 6 6 7 8 9 10 12 15 16 18 19 21 22 22 22 23 24 25 26 27 29 30 30 32 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

File name 03 - 430Chapter_1.pdf

1 Troubleshooting HP DesignJet 430, 450C and 455CA Printers 1-1 Introduction This chapter will guide you through the relevant steps to take when troubleshooting the printer. Is the Printer Using the Latest Firmware Revision? Before spending time troubleshooting the problem by doing the various tests or replacing parts (which may not need replacing), check which firmware revision the printer is using. To check which firmware revision the printer is using, Print the Service Configuration Plot ' page 4 29. Some problems which occurred in earlier firmware releases may have been solved in later revisions. So if there is a new firmware revision then replace the Firmware SIMM before replacing any parts. Important Information The Printer firmware is contained either on a flash ROM SIMM at the back of the Printer or on a masked ROM inside the electronics module. The firmware revision level, for example A.01.03, is printed by the Printer on the setup sheet and on the service configuration plot. The revision level is also printed on a label on any flash ROM SIMM. Do not open the electronics module. Important: When replacing the electronics module, always remember to check the firmware revision level of the new electronics module. The revision level will be printed on the top surface of the module. Also, check the firmware revision level of the ROM SIMM installed in the old electronics module. With this information you must do the following: 1. If the firmware revision level of the ROM SIMM in the old electronics module is lower than the firmware revision level of the new electronics module, then you must not install the ROM SIMM into the module. 2. If the firmware revision level of the ROM SIMM in the old electronics module is higher than the firmware revision level of the new electronics module, then you must install the ROM SIMM into the module. Example 1: The ROM SIMM firmware revision level is A.01.03 and the firmware revision level of the electronics module is A.01.04. You would use the electronics module without the ROM SIMM installed. Example 2: The ROM SIMM firmware revision level is A.01.05 and the firmware revision level of the electronics module is A.01.04. You would use the electronics module with the ROM SIMM installed. 1-2 HP DesignJet 430, 450C and 455CA Printers Troubleshooting What Can I do when a System Error Code Appears on the Front Panel Display? Chapter 2 contains a list of system error codes and their respective descriptions and recommended corrective actions. Only try one recommended action at a time and check if the error code has disappeared. If you have an error code which is not documented in this Service Manual or you have an error which you cannot resolve, then report the error to the HP Response Center or the nearest HP Support Office. When reporting the error, have the following information ready: D D D D D D D D Model and Serial Number of the printer. Which firmware revision the printer is using. The complete error co

File name 04 - 430Chapter_2.pdf

2 System Error Codes HP DesignJet 430, 450C and 455CA Printers 2-1 System Error Codes If you have an error code which is not documented in this Service Manual or you have an error which you cannot resolve, then report the error to the HP Response Center or the nearest HP Support Office. When reporting the error, have the following information ready: D D D D D D D D Model and Serial Number of the printer. Which firmware revision the printer is using. The complete error number. The Service Print (Utilities / Service Tests). The Current configuration sheet. Which software application the customer is using (name, version, etc.). Is the problem reproducible by you? Additional comments about the usage, the setting, etc.. Important Information on Troubleshooting Error Codes Before spending time troubleshooting the problem by doing the various tests or replacing parts (which may not need replacing), check which firmware revision the printer is using or check if a service note deals with this particular problem. Some problems which occurred in earlier firmware releases may have been solved in later revisions. So if there is a new firmware revision then update the ROM SIMM before replacing any parts. Refer to Chapter 7 for the part number of the ROM SIMM. 2-2 HP DesignJet 430, 450C and 455CA Printers System Error Codes 1 SETUP 2 FORM FEED 3 REPRINT 4 CANCEL STATUS GROUP D E F READY ALIGN MEDIA LOAD MEDIA ERROR GROUP K L M N O CARTRIDGES DATA MEDIA A B C FAST NORMAL BEST G H I J PAPER FILM COATED GLOSSY ROLL SHEET 5 PRINT QUALITY 6 MEDIA TYPE 7 MEDIA SOURCE LED Symbols: Off On (Steady) Flashing LED Letters: D E F A B C G H I J K L M N O LED Code Examples: Flashing KLM LEDs K, L and M are flashing. Steady DEL LEDs D, E and L are on. System Error codes The following pages contain the possible error codes and the instructions necessary to solve the problem. System Error Codes HP DesignJet 430, 450C and 455CA Printers 2-3 Error Codes for the HP DesignJet 430, 450C and 455CA Printers D E F A B C G H I J K L M N O Cartridges + Data + Media: An error which the customer could probably solve, like a paper jam, minor cartridge problem etc. In order to get more information on the error, the CANCEL key must be pressed which will display a Subcode. Use the error codes below to find information on the subcode. Cartridges + Data + Media: This error code indicates a severe problem which will require a Service Engineer to troubleshoot. In order to get more information on the error, the CANCEL key must be pressed which will display a Subcode. Use the error codes below to find information on the subcode. Ready + Cartridges: The RAM SIMM test failed. Possible causes: D D D D RAM SIMM installed is not an original HP supported part. RAM SIMM badly connected. Faulty RAM SIMM. Faulty electronics module. Steady KLM D E F A B C G H I J K L M N O Flashing KLM D E F A B C G H I J K L M N O Steady DK D E F A B C G H I J K L M N O Ready + D

File name 05 - 430Chapter_3.pdf

3 User Messages HP DesignJet 430, 450C and 455CA Printers 3-1 User Messages The lights on the front panel provide the means for your day to day communication" with the printer. They tell you the printer's current status and, if there is an error, the nature of the error. In order to understand the meaning of each combination of lights, you should check the table in this chapter to help you to understand the meaning. You will therefore find this table useful in troubleshooting. Key to table starting below This graphic ... means ... The fifteen lights on the printer's front panel. The sequence of explanations in the table is: 1: Status group 3: Print quality group 4: Media type group 2: Error group 5: Media source group This light is ON and STEADY. This light is ON and FLASHING. This light is OFF or this is the relevant light. The state of this light is not relevant. Lights No lights All lights off Explanation and Action If no lights are on, you may have a power problem, or the printer may be switched off. 3-2 HP DesignJet 430, 450C and 455CA Printers User Messages Lights Status group READY light off Explanation and Action The printer is not ready to print. Check the state of the other lights and look them up in this table. READY The printer is ready to print. Send your print from your computer or, for a special internal print, press the appropriate key combination. READY PAPER The printer is busy with a task or is receiving a file. Wait. If combined with one of the four media type group lights flashing. The printer is waiting for the media to dry. This can be terminated by pressing Form Feed. You are loading media and need to realign it, even if it seems perfectly aligned. ALIGN MEDIA Lower the media lever, realign the media, and raise the media lever. The printer is ready, but you need to load media. LOAD MEDIA When you are ready to print, load media. The printer has a file in memory, which it is waiting to print, but no media is loaded. LOAD MEDIA Load media. User Messages HP DesignJet 430, 450C and 455CA Printers 3-3 Lights CARTRIDGES Explanation and Action Either: one of the color or black print cartridges is faulty, misplaced or missing. Reseat or replace the cartridge. Or: you have loaded a print cartridge of the wrong type for this printer. For the correct part numbers of the cartridges supported by this printer, see Chapter 7. DATA Error Group Either: the current print is too large for the printer's memory. Look on your computer screen for any error message: some drivers, for example the Microsoft Windows driver supplied with your printer, allow you to choose a different printing mode and try to send the file again. In the case of the Microsoft Windows 95 driver shipped with the printer, the relevant field is called "Process document" in the Options dialog box. Otherwise, you may need to install more memory to print this print. For information on available memory expansion modules, see Chapter 7. Or: there i

File name 06 - 430Chapter_4.pdf

4 Service Tests HP DesignJet 430, 450C and 455CA Printers 4-1 Introduction This chapter explains how to use the built in Service Tests (Diagnostics) and what to do if the tests fail. If possible, always perform a Service Test on the component that you are about to replace, just to make sure that is the component that has failed. If the test on that component passes, there is no need to replace it. Power On The Printers automatically perform a series of internal self tests and mechanical initialization sequences whenever the user switches the Printer on. If a failure occurs, an error is indicated on the front panel LEDs. You can perform a failure analysis by interpreting the LED error code. (Details ' Chapter 2.) Self Test and Normal Initialization The power on self test and initialization procedure does the following: 1 Initializes the servo processor. 2 Initializes the main processor. 3 Tests communication between the main processor and the servo processor. 4 Tests the EEROM checksum. 5 Tests the servo processor transfer buffer and interrupt tracking. 6 Tests the ROM checksum. 7 Causes the main processor to initialize certain firmware modules. 8 Performs a subset of the electrical service test. 9 Checks the cover sensor. If the cover is open, nothing further happens until you close it. 10 Initializes the carriage axis (Y axis). 11 Uses the mark encoder to check the start of the drive roller. 12 Ejects any loaded sheet. Does not eject roll media if loaded. 13 Checks the media sensor. 14 Sets the Printer to accept media. 4-2 HP DesignJet 430, 450C and 455CA Printers Service Tests Service Tests Which Service Test to Perform Use the following table as a rough guide: Assembly/Feature Bail system Carriage Carriage motor and drive system (including belt, pulley and slider rod) Cartridge identification Cartridge nozzles Communication between computer and Printer Cover sensor DRAM SIMM EEROM Electronics module Tested by ... Bail cycle test, Bench run, Modular Test Carriage test, Electrical test, Modular test Carriage-axis test, Bail cycle test, Modular test, Bench run Carriage test, Modular test Carriage test, Modular test Service monitor Sensors test, Modular test Electrical test, Power-on tests, Bench run Electrical test, Power-on tests, Bench run Electrical test, Power-on tests, Servo/Encoder test, Sensors test, Bail cycle test, Front-panel test, Media-axis test, Carriage test, Carriage-axis test, Bench run, Modular test Carriage-axis test, Servo/Encoder test, Modular test, Bench run Front-panel test, Modular test Servo/Encoder test, Media-axis test, Modular test, Bench run Media-axis test, Modular test, Bench run Sensors test, Modular test Sensors test, Modular test Carriage test, Modular test Electrical test, Power-on tests, Bench run Bail cycle test Electrical test, Power-on tests, Bench run Encoder strip Front-panel keys and LEDs Media-axis encoder and cable Media motor and drive system (including drive roller and overdrive) Media sensor

File name 07 - 430Chapter_5.pdf

5 Service Calibrations and Adjustments HP DesignJet 430, 450C and 455CA Printers 5-1 Calibrations The only Calibration that the Printer requires is the Accuracy Calibration which must be performed under certain conditions. Accuracy Calibration Purpose The accuracy calibration (X axis calibration) procedure is used to correct the end point accuracy of the media axis. The carriage axis does not require calibration and is used to calibrate the media axis. The accuracy calibration also includes calibration of the optical line sensor on the carriage. The accuracy calibration is also used to correct the error of the X axis movement to avoid banding. Perform the accuracy calibration whenever the: D D D D D D D D EEROM is erased. Electronics module is replaced. Drive roller is removed or replaced. Media (X axis) motor is removed or replaced. Drive roller gear is removed or replaced. Cartridge carriage is replaced. Mark encoder is removed or replaced. Optical sensor is removed or replaced. What is the End Point Accuracy Specification ? The end point accuracy specifies how accurately a Printer can draw a given length of line. The end point accuracy specification for the Printers is ± 0.38 mm (0.015 in) or ± 0.2% of the specified vector length, whichever is greater, at 23dC (73dF), at 50 60% relative humidity on HP matte film. Use the following formula to calculate the Printer's accuracy: Measured length ­ Desired length Desired length x 100 = %Error What can Affect the End Point Accuracy ? Various part tolerances inside the Printer affect the accuracy (in particular the drive roller). Other outside influences include: Media thickness. Thicker media creates longer lines. D Media expansion. As the media grows, so do the lines. D The application software may be instructing the Printer to draw an incorrect line length. D The EEROM has been cleared. The accuracy constants are stored in this non volatile memory component. D 5-2 HP DesignJet 430, 450C and 455CA Printers Service Calibrations Before Performing the Accuracy Calibration 1 Under normal environmental conditions and on HP Matte Film D/A1 size media, plot a drawing that contains two X" marks nominally positioned 500 mm (19.69 in.) apart. 2 Measure the distance between the centers of the X" marks on the plot. Accuracy calibration is needed if this distance is not 500 mm (19.69 in) 1 mm (0.04 in). If the measured accuracy, media thickness, or environmental conditions vary greatly from the factory standards, recalibrate the Printer by continuing with the following procedure. Performing the Accuracy Calibration 1 Place a sheet of HP Matte Film over the top of the Printer for 10 minutes to let the sheet stabilize to the environmental conditions. Use a sheet of approximate size A1 or D. You must use HP Matte Film. Otherwise the optical sensor on the carriage will be calibrated incorrectly, and the Printer will have problems loading some types of media. 2 Enter into Service Mode 2, by powering ON the

File name 08 - 430Chapter_6.pdf

6 Print Quality HP DesignJet 430, 450C and 455CA Printers 6-1 Print Quality Troubleshooting Checklist When faced with a Print Quality problem, use the following checklist as a guide in troubleshooting the problem: 1 Problem reproduction D Reproduce the problem that the customer is seeing using their original settings. 2 Printer configuration: D Print Mode: Set to Best" (in the printer and in the drivers). D Select the correct media setting when loading the media. 3 Hardware check list D Check if the latest version of the firmware is installed. If not Install the latest firmware revision. 4 Cartridges Cartridge Troubleshooting Process: D If you don't have any samples yet, reproduce the original problem with the correct printer settings. D Print the Print Quality Plot using the exact settings and Media that the Customer used when faced with the Print Quality problem ' page 6 3. Cartridge Alignment: D Perform the Cartridge Alignment procedure (details ' User's Guide). 5 Media D Make sure that you use HP or HP approved media. D Select the correct media type through the front panel when loading it. 6 Driver print quality configuration: To clarify if the reason of the problem is related with the print mode defined with the Non HP Driver try the following: D Print the same sample using the Non HP driver and their normal media. D Print the internal demo or print the Print Quality Plot (details ' page 6 3) using HP Media and configuring the printer as indicated previously. If the output obtained using the HP Solution is good and the one obtained through the 3rd party solution is bad, HP support organization should: D Communicate to the customer that the problem is not in the printer and that he should address it through the 3rd party vendor support structure. 7 Accuracy Calibration (details ' Chapter 5) D Perform Accuracy calibration" using HP Matte Film. 6-2 HP DesignJet 430, 450C and 455CA Printers Print Quality Print Quality Plot Introduction Whenever a Print Quality problem appears, it is advisable to print the Print Quality Plot to help diagnose the problem. The Print Quality Plot will help you differentiate between possible cartridge errors and other problems such as incorrect front panel selection, driver or RIP configuration or mechanical problems. To achieve the best performance from the printer, advise the customer to only use genuine HP accessories and supplies, whose reliability and performance have been thoroughly tested to give trouble free performance and best quality prints. Using the Print Quality Plot 1 The size of the Print Quality Plot is A3 and B so you must use media (roll or sheet) that is this size or larger. 2 Use the same type of media that the customer was using when the Print quality problem was discovered. 3 Study each of the test patterns in the order listed to determine the type of Print quality problem. 4 If the customer was reporting problems of Print Quality using non HP media and after the Print Quality Plot

File name 09 - 430Chapter_7.pdf

7 Parts and Diagrams HP DesignJet 430, 450C and 455CA Printers 7-1 Exchange Assemblies Exchange assemblies are factory repaired and tested assemblies that you can order; they are listed in the following table. Exchange assemblies are available only on a trade in basis; therefore, you must return the defective assemblies for credit. Exchange Assemblies HP Part Number C4713 60037 Qty 1 Description Electronics Module Replacement Parts Parts shown in the drawings in this chapter are listed in the corresponding part lists. Match the appropriate number on the drawing with the same number in the parts list for information on that part. The total quantity for each part on the drawing is given as well as the part number. To obtain replacement parts, contact the nearest HP Support Office. You must include the part number and part description in the order you send. Also include the Printer model and serial number. 7-2 HP DesignJet 430, 450C and 455CA Printers Parts and Diagrams Primer Assembly & Service Station Bail & Overdrive Mechanisms Page 7 14 Page 7 18 Carriage Assembly Pincharm Assembly Page 7 16 Covers Page 7 20 Page 7 8 X & Y axis Motors Page 7 12 Rollfeed Assembly Page 7 6 Front Panel, Spittoon & Electronics Module Page 7 10 Printer Support Page 7 4 Figure 1 General View Parts and Diagrams HP DesignJet 430, 450C and 455CA Printers 7-3 Figure 2 Printer Support Reference on Drawing 1 2 3 4 HP Part Number Quantity Description C4704 60095 C4704 60086 C4704 60075 C6069 60002 C4704 60077 1 2 2 1 1 1 1 1 1 6 Hardware Kit (Includes Screw Drivers) Foot Assembly Legs Assembly X axis Brace (D/A1 size) X axis Brace (E/A0 size) End Cap (D/A1 size) End Cap (E/A0 size) X Bar Assembly (D/A1 size) X Bar Assembly (E/A0 size) Paper Loop Assembly 5 C6069 40001 C4704 40070 6 C6069 60001 C4704 60074 7 C4704 60073 7-4 HP DesignJet 430, 450C and 455CA Printers Parts and Diagrams 1 1 1 4 1 1 3 1 6 1 3 2 5 7 2 1 Figure 2 Printer Support Parts and Diagrams HP DesignJet 430, 450C and 455CA Printers 7-5 Figure 3 Rollfeed Assembly Reference on Drawing 1 2 HP Part Number Quantity Description C4717 60004 C4717A 1 1 Rollfeed Hardware Kit Rollfeed Assembly (D/A1 size) (Includes Spindle, Hardware kit and Hubs) Rollfeed Assembly (E/A0 size) (Includes Spindle, Hardware kit and Hubs) Spindle (D/A1 size) Spindle (E/A0 size) Spindle Hub Spindle Hub Kit (for Chinese Spindles only) Extensions Kit Assembly C4719A 1 3 C4717 60003 C4719 60003 1 1 2 1 1 4 C4717 40017 C4713 60120 5 C4713 60038 7-6 HP DesignJet 430, 450C and 455CA Printers Parts and Diagrams 5 1 3 4 2 Figure 3 Rollfeed Assembly Parts and Diagrams HP DesignJet 430, 450C and 455CA Printers 7-7 Figure 4 Covers Reference on Drawing 1 HP Part Number Quantity Description C4713 60014 C4714 60014 1 1 1 1 1 1 1 2 1 1 1 1 Top Cover (D/A1 size) Top Cover (E/A0 size) Left End Cover Switch Button Right End Cover Back Cover (D/A1 size) Back Cover (E/A0 size) Screw Torx M3 Ca

File name 11 - 430Chapter_9.pdf

9 Preventive Maintenance HP DesignJet 430, 450C and 455CA Printers 9-1 Moisture on Printer Users should use the Printer in an environment between 5% and 95% relative humidity. To recover from moisture condensation, turn the Printer off, and, using the main roller as a reference, wait until the Printer is completely dry before using it again. Level of Printer Usage To achieve good performance and long lifetime of the HP DesignJet 430/450C/455CA Printers, users should limit use to the following recommendations (duty cycle): Average number of plots per day 10 E/A0 CAD plots Maximum number of plots per day 20 E/A0 CAD plots The service configuration plot gives an indication of how much the Printer has been used: number of plots, number of cartridges, number of times the Printer has been turned on. (Details ' page 4 29.) Friction on Slider Rod The carriage bushings are made of a porous composite material. Oil stays inside them by means of capillary action. Never place the bushings on an absorbant material. To prevent friction of the bushings on the slider rod, remove dirt from the slider rod and chassis beam. Apply oil (Anderol 4068, HP part number: 6040 0858) to the slider rod ( 3 drops) and to the bushings if they are running dry. Noisy Carriage Wheel To prevent noisy movement of the carriage, remove aluminum or dust particles from the wheel at the back of the carriage, and from the slider path along which the wheel moves. 9-2 HP DesignJet 430, 450C and 455CA Printers Preventive Maintenance Ink Spilling The service configuration plot gives an estimation of the amount of ink in the Printer's spittoon. (Details ' page 4 29.) To prevent ink spilling, replace both the spittoon and the ink separator when the spittoon is almost full. About 880 primes are needed to fill up the ink separator. Note that if you clear the EEROM or replace the electronics module, the factory spittoon value is reset to 0% used. Keep in mind that the value printed on the service configuration plot may greatly underestimate the amount of ink in the spittoon. Belt Swelling To prevent new belts from swelling incorrectly, keep them in their bags with dissicant until you need to install them. Preventive Maintenance HP DesignJet 430, 450C and 455CA Printers 9-3 Cleaning the Printer To maintain the Printer in good operating condition, keep it free of dust accumulation, ink, and other contamination. Cleaning intervals are determined by the Printer environment and by the types of Printer supplies used. WARNING Disconnect the Printer from the power source prior to performing any cleaning. DO NOT allow liquid to run on to electrical components or circuits, or through openings in the enclosure, as this can create a shock hazard leading to death or injury. General Cleaning Proper general cleaning should include the following: 1 Blow away dust accumulation with compressed air if available. 2 Clean the outer surface of the Printer with a damp sponge or cloth. Use a mild soap

File name 12 - 430Chapter_10.pdf

10 Functional Overview HP DesignJet 430, 450C and 455CA Printers 10-1 Introduction The HP DesignJets 430, 450C and 455CA follow on from and replace the DesignJet 330 and 350C. The HP DesignJets 430, 450C and 455CA (like the DesignJets 230, 330, 250C and 350C) have inherited much of the system architecture and features of the DesignJet 220. Their writing system, however, is based on that of the DesignJet 650C. This chapter describes some of the main features of the HP DesignJets 430, 450C and 455CA. Before reading it, read the functional overview of the DesignJet 220 ' HP DesignJet 220 and HP DesignJet 200 Printers - Service Manual," part number C3187 90000. (Information on the DesignJet 650C ' HP C2858B/C2859B DesignJet 650C Service Manual," part number C2858 90000 Rev B). Roll Media When a roll feed assembly is installed on the Printer, roll media can be used. The roll feed assembly consists of: Two roll feed components. D A spindle. D Two media stops. D The roll feed assembly is installed below the sheet media entry path, to allow the ease of loading for sheet media. When roll media is loaded into the Printer, it is passed around a diverter roll, which optimizes the infeed path to the Printer. Once a plot/print is completed, a built in cutter automatically slides across the paper to cut the plot/print from the roll. Removing Static Charge from the Media An anti static brush located under the entry platen prevents static charge from building up on the media. A charge can cause the media to stick to itself and jam the Printer. 10-2 HP DesignJet 430, 450C and 455CA Printers Functional Overview Gripping the Media When you load the media, it is gripped by the pinch arms. Pinch Arm Sensor The pinch arm sensor is a switch sensor that is attached to the Printer Chassis. It detects the position of the pinch arm lever. Linkage, attaching the lever to a cam, causes the cam to release the switch as the pinch arms are raised. The pinch arm sensor is electrically connected to the main PCA. Providing a Force on Top of the Media Bail The bail provides a normal force on top of the media. There is no bail sensor on the Printer to detect if the bail is up or down. Bail Lift Mechanism The bail features an automatic lift mechanism driven by the media motor using a series of gears and actuated by the cartridge carriage. The cable based design eliminates the torque on the axle of the bail lift cam and thus improves reliability. This mechanism is also more accessible. (Removal ' page 8 28.) Detecting the Lines and Media Edges Line Sensor The line sensor on the cartridge carriage is used to: Detect the left and right media edges. D Detect and measure lines drawn on media when performing accuracy calibration. D Scan the setup and alignment sheets. D Find the platen roller reference mark. D Functional Overview HP DesignJet 430, 450C and 455CA Printers 10-3 Moving the Carriage Carriage Drive Mechanics Motor, Belt and Pulley D The carriage (Y axis) drive c