hp Mono/Color LJ News No. 28
Contents
1. Paper handling problems when printing from tray 2 Users may report one or more of the following symptoms e Tray 2 OPEN or EMPTY error messages on the control panel display e Tray 2 paper level indicator visible on the front exterior of the tray indicates there is no paper even though paper is present in the tray e Tray 2 paper level indicator indicates that HP LaserJet 2420 printer the tray is only partially full even when loaded with 250 sheets Solution Some tray 2 paper handling problems may be due to a dislodged paper level indicator During shipping the mechanical paper level indicator in tray 2 can move out of its proper position inside the tray see the photo below This can be corrected by slightly twisting the tray Photo of dislodged paper level indicator The paper level indicator clip in the photo above is sitting on top of the paper lift plate metal plate Instead it should clip onto the paper litt plate Holding the front of the tray in one hand and the rear of the tray in the other twist the tray until the paper level indicator falls into the proper position HP LaserJet 2400 series printer updates 2 Persistent INSTALL BLACK TONER CARTRIDGE message Some HP LaserJet 2400 series printer users may experience a persistent INSTALL BLACK TONER CARTRIDGE message even though an HP black toner cartridge is installed Other users may experience dark pages high toner coverage or thick2. Have the customer completely remove the toner cartridge from the printer and re install the same cartridge by holding the lett side of the cartridge with the left hand and slowly inserting the cartridge into the printer until it seats firmly and confidently on the left side of the printer It this does not fix the problem have the customer completely remove the toner cartridge from the printer again and re install the same cartridge by holding the lett side of the cartridge with the left hand and slowly inserting it into the cartridge area guides Then allow gravity to pull the cartridge into the printer The cartridge should slide down the guides with little or no effort At this point the cartridge will appear slightly crooked but if the customer applies a moderate amount of pressure with one finger to the left side of the cartridge the cartridge should snap into place with a solid chunk sound HP LaserJet 4250 4350 series printer updates Troubleshooting blank control panel display Customers have reported instances of a blank control panel display Several symptoms have been noted e Completely black display with no LEDs on e Display menu prompts do not work but the blue black backlight is on and the LEDs are on solid A couple of causes have been identified but this issue is still under investigation Noted workarounds or solutions e First run an engine test page to verity that the printer engine all pr
3. dark bands across a printed page HP LaserJet 2430 printer Serial numbers affected Starting serial number Ending serial number Description CNBOOO0000 CNDZ999999 China manufactured 110V units CNCO000000 CNFZ999999 China manufactured 220V units JPBOOOO000 JPDZ999999 Japan manutactured 110V units JPCOOO0000 JPFZ999999 Japan manutactured 220V units BRBOOOOOOO BRDZ999999 Brazil manufactured 110V units BRCOOOO000 BRFZ999999 Brazil manufactured 220V units Troubleshooting tips Troubleshooting black dark pages high toner Troubleshooting the persistent INSTALL BLACK coverage of nick ears bands aeae mE page TONER CARTRIDGE message 1 Try reseating the print cartridge to resolve the problem 1 Try reseating the print cartridge to resolve the problem 2 Test the print cartridge in another HP LaserJet 2400 series printer 2 Test the print cartridge in another if available HP LaserJet 2400 series printer if available 3 Test the printer with another HP LaserJet 3 Test the printer with another HP LaserJet 2400 series print cartridge it available 2400 series print cartridge if available 4 Remove the right cover and inspect the formatter flat ribbon cable connection the middle left side of the formatter as you face it 4 Remove the lett side cover and inspect the grounding contact lever see instructions under Cause of problem grounding contact lever unhinged on page 4 5 Remove the left side cover and in
4. important to perform Gamma Adjustment trom Key Operator Mode right after upgrading the firmware HP Color LaserJet 9850 series printer defective drum potential sensors The new drum potential sensor is identified by a red dot The new drum potential sensor also known as the HV detecting sensor can be identitied by a red dot located in the middle of its PCA See the photo above Serial numbers affected The table below shows the serial number ranges of all the 75 serial numbers aftected by the defective drum potential sensor product number Q3225A The serial numbers with C in the fourth digit were shipped in America and the serial numbers with F in the fourth digit were mainly shipped in Europe and Asia Starting serial number Ending serial number CNHCB 00001 CNHCB 00024 CNHCB 00026 CNHCB 00030 CNHEB 0000 1 CNHFB 00007 CNHFB 00009 CNHEFB 00022 CNHEFB 00024 CNHFB 00026 CNHFB 00028 CNHFB 00033 Individual serial numbers CNHEB 00035 CNHEFB 00037 CNHEFB 00038 CNHFB 00040 CNHFB 00042 Individual serial numbers CNHEFB 00044 CNHEB 00045 CNHEFB 00047 CNHFB 00049 CNHEB 00055 17 Description 2 part RS 3 part RS CB white singles CFB white canary or pink singles CF canary or pink singles Carbonless media drawer statements For customers asking about vendors HP has tested the following 8 5 by 11 inch carbonless media from Appleton s Xero Form II with the HP LaserJet 4200 4300 4250 4345 435
5. 0 series printer Part numbers 4316 0466 0129 0481 0156 and 0455 0245 and 0262 CFB white 5 hole 1 4 inch punched across top 1083 To learn more about Xero Form II use on laser printers please watch the video at the following URL hito media ho com program cfm key D11O QN8720 It a printer and or manufacturer is not listed above the paper has not been tested by HP and is not qualified for use in HP LaserJet printers For customers asking about performance of carbonless media tested by HP Customers using carbonless media tested by HP on the HP LaserJet 4200 4300 4250 4345 4350 series printer may experience the following e Slightly higher jam frequency or multi picks than standard media due to the surface coating on the media Toner particles on the page when starting up the printer We recommend running a cleaning page every 500 pages or when toner particles start occurring If customers call in with the above issues please see the provided troubleshooting steps Carbonless media drawer statements How do we troubleshoot between an HP printer issue and the carbonless media vendor issue Check the following first if you are experiencing paper jams mis picks or toner contamination Run a cleaning page This should clear up any printer quality issues and perhaps some jamming issues If experiencing paper jams or mis feeds try running the carbonless media from a different tray Ma
6. 105 08 011 5 The following issues were addressed e Under rare circumstances SNMP status reports Off Line while control panel reads READY Processing job hang on paper out when Input Auto Continue is set to No Timeout Security improvements implemented when the MFP is used with HP Digital Sending Software DSS Incorrect French localization of media sizes in Copy Settings e In some unique network environments the MFP sends multiple copies of the same email message Pressing Reset in text entry mode results in a blank menu Control panel may lock up when setting custom paper sizes e Restore Factory Settings does not restore Exclusive Tray settings e 75 dpi emails are sent as 150 dpi e When email is configured but not connected the message is now Not Available instead of Not Configured HP LaserJet 9000 9000L 9040 9050mfps updates HP LaserJet 9050mfp e LDAP lookup no longer functions after executing a Find Send Gateways without network connectivity An NVRAM INIT was required to restore LDAP lookup functionality HP Web Jetadmin was unable to complete a remote firmware upgrade with the control panel locked This revision changes how future upgrades will be handled but upgrading to this revision will still require a manual reboot LDAP server hostname resolution only happens at boot up rather than dynamically Device POP3 username size limit increased from 16 characters to 2
7. 56 characters Manual copy settings show two paper sizes selected when copying Letter R or A4 R Incorrect page counts in XML data Some output device contiguration settings not reflected in the HP Embedded Web Server 49 4C02 error when a null value is entered for LDAP IP address Improvements were made in how the MFP handles control panel messages from third party solutions Simplex landscape images are rotated 180 degrees on any n up copy job Automatic Document Feeder ADF OUTPUT BIN FULL message was being triggered at the incorrect number of pages 12 Resolved issues continued e Slow printing on certain jobs due to timing issues e Images are rotated 90 degrees when copying small items from the glass e EIO page is missing trom printout when 3rd Party Configuration page is registered e Job Mode ON and Authentication ON causes jobs to be cancelled after inactivity timeout e 65 12 99 error when trying to wake up the printer trom HP Web Jetadmin Enhancements provided with this firmware revision e Mixed letter and legal originals can be copied via the ADF e The sender of an email can automatically be copied on all messages A configuration file available from HP support enables this function e The Stop button can be used to cancel a fax Exclusive tray settings allow alternate tray selection prompt to be disabled Analog fax accessory Q3701A firmware revision 2 32s The foll
8. HP LaserJet printer product update January 2005 e Issue 28 development of these products and it looks as if our efforts have paid off Occasional introduction hiccups do occur but we are working hard to correct these swiftly Thank you for your partnership with us in making these products successful and we hope you enjoy the information provided HP Restricted Ti Welcome to the HP LaserJet printer product update newsletter We are now shipping many of our new fall 2004 products in volume and have very few problems to report at this time Much work and effort went into the ie itt O N Af Se XX WEG u 4539 Qi Inside HP LaserJet 2400 series printer updates ccccccccccceeeeeeceeeceeeeeeeeeeesseeeeeeeeeesaeeeeeeeeesseeeeeeeeeanaeees 2 Paper handling problems when printing from tray 2 ccccccccccceceee cess seseeeeeeeeeeeeeeeeeeeeeeeeeeaeaaaaaas 2 Persistent INSTALL BLACK TONER CARTRIDGE message ccceeeceeeeeeeececaeeeeaeeeeeeeeeaeeeeaeeeees 3 PIO WWI OW SE WO cacao a ica eoene say eed ete necro 7 Improper cartridge seating creates pages with toner smear ccsssseeeeeceeeeeecesseeeeeeeeeeeeeasaaen ees 8 HP LaserJet 4250 4350 series printer updates ccccccccc ee eeeeeccccceeecasseeeeeeeeceseeessuaeeeeeeeeeeeeeeaaaes 9 Troubleshooting blank control panel display ce 0bcenuscsae ae vesncneresays secteseesston ewes coneemceauessveesetanaenee 9 Troubleshooting grinding
9. Jet printer Note that if HP has tested specific carbonless media for one printer this does not imply that it will work with all HP LaserJet printers Non qualified carbonless media may contain materials not designed to operate with a laser printer Qualified carbonless media has been shown to withstand temperatures that media used in these laser printers are exposed to 200 degrees C 392 degrees F for a tenth of a second without damage to the printer or release of any undesirable fumes For media vendors For any vendor who is offering anything other than Carbonless Media HP is not qualifying media manufacturers at this time but thank you for your inquiry For a carbonless media vendor specifically HP has been working with carbonless media manutacturers in terms of qualifying their media with our products Please proceed to the third party solutions web site at www hp com qo solutions At this site there is additional information about the various partnering opportunities and how to apply 19 Acrobat is a trademark of Adobe Systems Incorporated HP and the invent signature are trademarks of the Hewlett Packard Company Copyright 2005 Hewlett Packard Development Company L P The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should
10. again In copy jobs switching from the ADF to glass will speed it up again This problem may also occur on the HP LaserJet 9050 series printer but the issue is still under investigation Workaround Power cycle the MFP to resolve the issue Do not replace parts The lab is investigating the problem which appears to be firmware related 13 HP Color LaserJet 3550 series printer service manual updates The current HP Color LaserJet 3500 3550 3700 Service Manual incorrectly states the service PIN part number DC Controller part number and formatter part number for the HP Color LaserJet 3550 printer The correct part numbers are given in the table below HP Color LaserJet 3550 Correct part number Service PIN 10355004 DC Controller RM 1 05 10 000CN Formatter RM 1 2324 O00CN HP Color LaserJet 3550 printer HP Color LaserJet 3550 series printer service manual updates 14 HP Color LaserJet 9500 series printer and 9500mfp updates HP Color LaserJet 9500 series printer firmware upgrade The following issues have been resolved with the latest revision 05 006 3 firmware roll which is now available at the following URL http www hp com go 1j9500_tirmware Resolved issues You may see improvements by updating your printer s firmware with revision 20041024 05 006 3 e Receiving a 49 21 error when waking up trom Deep Sleep mode with Power Save set to minute e When sending certain PDF files directly to the pr
11. be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein
12. er Low voltage power supply 110V Low voltage power supply 110V Low voltage power supply 220V Low voltage power supply 220V Description 16 MB flash firmware DIMM 16 MB memory DIMM Internal hard disk Internal HDD cable PCA Fax modem card Vertical transfer assembly 3 000 sheet stacker 8 bin mailbox Duplexer Finishing device Printer HP LaserJet 9000mfp HP LaserJet 9000Lmfp HP LaserJet 9000 9000Lmtp HP LaserJet 9040 9050mip HP LaserJet 000 9000Lmtp HP LaserJet 9000 9000Lmfp HP LaserJet 9000 9000Lmfp HP LaserJet 9040 9050mfp HP LaserJet 9040 9050mfp HP LaserJet 9040 9050mfp HP LaserJet 9040 9050mfp HP LaserJet 9000 9000Lmfp HP LaserJet 9040 9050mtp HP LaserJet 9000 9000Lmfp HP LaserJet 9040 9050mitp Printer HP LaserJet 9000 9000Lmtp HP LaserJet 9000 9000Lmfp HP LaserJet 9040 9050mfp HP LaserJet 9040 9050mfp HP LaserJet 9040 9050mip HP LaserJet 9040 9050mfp HP Color LaserJet 9500mtp 11 HP LaserJet 9040 9050mfp firmware upgrade The latest revision 08 0115 firmware roll will be available February 7 2005 at the following URL www hp com go lj9050mtp firmware This firmware release incorporates all fixes previously provided with 08 005 0 This firmware release is intended for use when using HP Autostore v 3 0 only This firmware is not recommended if HP Autostore v 3 0 is not being used Resolved issues You may see improvements by updating your printer s firmware with revision 20050
13. gear noise from tray 3 scscssesessccccceceeeceeeeeeesesssseseeeeeeeeeeeeeeeeeeeeeeas 10 Transfer block assembly not available cccccccceccccccccceee sees eeeeeeceeeeessseeeeeeeeeeeeeseaseaeeeeeeeeeas 10 New main motor and print cartridge motor part numbers cccccceesseeeeeeceeeeeeessaseeeseeeeeeeeeeaaes 10 HP LaserJet 9000 9000L 9040 9050mfps updates ccceeecccccccecceesseeeeeeeeeeeeeessaeeeeeeeeeeeeeeaaaes 11 Service CU GCOS CMOS 2 nee se enecerccansceciessenett ceeaneicesesenscocmouasatsnceanc ENI ET OA ERA 1 HP LaserJet 9040 9050 mip firmware UPGrade cc cccc cece cece cece eee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaaaaaaaes 12 Jaw PRUNING 15S US 5g co acct E aru ceet seeds sates ot encue E E EE E A 13 HP Color LaserJet 3550 series printer service manual UPAUteS ccccccccceeeseececeeesseeeeeeeessaneees 14 HP Color LaserJet 9500 series printer and 9500mfp Updates cece ceeseeeecccccceeeesseeeeeeeeeeeeeeeaaaes 15 HP Color LaserJet 9500 series printer firmware upgrade ccceceeeeseeeeeeeseeeeceeeceeeeeeeaeeeasaaaans 15 Disr pied image delei ech Hoe acaseis csnetostpendereuceta R E E ER 16 HP Color LaserJet 9850 series printer defective drum potential SeNSOrs cccceseeeeeeeeeeeeeeeeeeees 17 Carbonless media drawer statements ec s cnear aesestatscnkadecnatdatsuaaanbancnchicetalnedeemeonenbecsataatahealeeteasecdea 18 invent HP LaserJet 2400 series printer updates
14. heets need to be joined together to allow the written image to go through to all plies Options include the following e Jogging the sheets together and using unfastened e Paper clip e Clip board e Hand staple e Printer staple unit e Fanapart Adhesive To view a video demonstration on how to use Fanapart Adhesive please access the following URL www appletonideas com tanapartdemo e For a video demonstration showing the various options for joining sheets into forms please access the following URL hitp media hp com program ctm key D1 1 OQN8720 It the above troubleshooting steps do not help perform the following to determine if it is a printer caused issue or a carbonless media caused issue 1 Run approximately 30 sheets of 20 Ib bond paper If the issues clear up with this paper the carbonless media may be causing the issues Please contact the media vendor for additional troubleshooting help 2 Replace the toner cartridge If this clears up the issue the carbonless media may be causing contamination on the OPC Organic Photo Conductor Please contact the media vendor for additional troubleshooting help Appleton carbonless media customer support 1 800 922 1723 Phone number Email tech svx appletonideas com Carbonless media drawer statements For customers asking about performance of carbonless media not tested by HP HP cannot comment on carbonless media not tested by HP for a specific HP Laser
15. inter components except the formatter formatter DIMMs ElO products and the stacker or stapler stacker is functioning Printing an engine test page To print an engine test page use a small non metallic pointed object to press the test page switch which is located on the right side of the printer see the photo below ys ee im ALLS Cat a ail a Be au TTT QE Engine test page switch The test page should have a series of vertical lines and print from the last tray you printed from However if the printer has been turned off and then on again since the most recent print job the page will print from tray 2 The printer will continuously print test pages as long as the test page switch is pressed The printer will not print a test page if it is in PowerSave mode or Sleep mode HP LaserJet 4250 4350 series printer updates A damaged formatter might interfere with the engine test If the engine test page does not print try removing the formatter and pertorm the engine test again If this engine test is successful the problem is almost certainly with the formatter the control panel or the cable that connects them It the test page is successtul the problem most likely resides in the formatter It will need to be replaced If the formatter is removed and the engine test does not print a test page the problem is most likely NOT the formatter but the engine Possible causes are a defective powe
16. inter without the driver images shift distort have missing characters or do not print correctly Event Log lists all 49 xx errors as Image Drum HV when this was not the correct error message e HP Jetdirect page does not print when certain third party font or storage DIMMs are installed HP Color LaserJet 9500 series printer Image data is lost when printing from Acrobat with Auto Rotate and Center not checked On the Usage Page the Total equivalent counts get reset to O when performing a firmware upgrade to 5 005 3 PJL code used for Media tray selection fails when using the Direct PDF print path May receive a GELimitCheck Operator DO error when using the Direct PDF print path Current firmware revisions for all devices included in this firmware bundle are listed in the table below Firmware revision 05 006 3 Device HP Color LaserJet 9500 series printer HP 2000 sheet input tray 03 42 C8531A HP Stacker Stapler 040819 C8085A HP Stacker 040820 C8084A HP Multifunction finisher 031010_R C8088A HP Multifunction finisher 040827 C8088B HP Color LaserJet 9500 series printer and 9500mfp updates Datecode 20041024 05 006 3 Comments See Resolved issues above Changed to lift sensor logic during continuous printing to avoid reporting false lifting errors No major issues found Minor changes have occurred to this device to help with the reliability of other produc
17. ke sure the printer and media is in a supported environment check the temperature and humidity Make sure the trays and driver are set for Plain Paper Make sure the fuser mode is set to Normal Do not use the 5 hole punch carbonless media in Tray 1 A slight image streaking pattern may be observed when a high capacity toner cartridge is nearing the end of its life and the user is printing in continuous duplex mode Switch to a regular toner capacity print cartridge or alternate print jobs simplex and duplex To improve carbonless image transfer during a duplex job a light screen toner pattern should be used when printing on the CB coated back functional side Duplexing on media with coated back CB and CFB is not recommended due to higher levels of contamination and multi feed rates It the media is not imaging through the plies after printing perform the following e When you are printing ensure you are using Reverse Sequence and ensure you are putting the media in the printer print side down The print side is shown on the ream label 18 e We recommend running one form set through the printer and then perform a pencil check write something on the top sheet and ensure the image is going through If not the media is not loaded properly e For a video demonstration of how to load the media properly please access the following URL htto media hp com program cfmekey D 1 1 OQN8720 The s
18. models 10 50 60 Hz 2 Hz 220 volt 220 to 240 volts models 10 50 60 Hz 2 Hz It the troubleshooting steps above do not resolve the problem return the unit to the dealer If returning the unit to the dealer is not an option pertorm a unit exchange See the table below for unit exchange part numbers The no power symptoms should not be confused with blank control panel display symptoms It the control panel display is blank but other signs of lite can be detected such as lit or blinking LEDs motor rotation sounds etc refer to the HP LaserJet 2400 series printer Service Manual and the Blank Display Intormation Only Service Note for troubleshooting help Improper cartridge seating creates pages with toner smear Customers may occasionally insert the toner cartridge in such a way that it sits slightly crooked resulting in white pages with smeared toner While difficult to do so this problem may be reproduced by holding the right side of the toner cartridge in your right hand and inserting it crooked without proper guidance and seating it on the left side of the unit What customers will see Customers will see printed pages that are mostly or completely devoid of any recognizable character letter or image The toner will appear to have been loosely formed on the page and smeared during fusing White page with toner smear HP LaserJet 2400 series printer updates Solution
19. not offer a transfer block assembly as a replaceable part for the HP LaserJet 4250 4350 series printers Dismantling or splitting the engine frame to replace this part may introduce new problems or defects In fact repair procedures should never require the engine frame or chassis to be dismantled or split apart Resolution HP recommends replacing the entire engine if the transfer block assembly needs to be replaced New main motor and print cartridge motor part numbers Because we have different suppliers for the motors in the HP LaserJet 4250 and 4350 series printers there are two different part numbers for each motor These part numbers are as follows Description Part number Main motor M101 RK2 0272 O00CN or RK2 10 pin 0273 000CN Cartridge motor RK2 0274 O00CN or RK2 M102 8 pin 0275 000CN Background information The engine motors will often have RK2 0273 O00CN main motor and RK2 0275 O00CN print cartridge motor part numbers Replacement parts will be RK2 0272 OOOCN main motor and RK2 0274 O00CN print cartridge motor Field bench or ASP repair technicians may be confused by the fact that the replacement part received is different than the part number on the engine Despite the different part number the part will still work The correct motor can be distinguished by whether it has an 8 pin or 10 pin connector The main motor has a 10 pin connector and the print cartridge motor has an 8 pin c
20. onnector 10 Parts Product number Q1312A Accessories Product number C9147A C7843A C8084A Q5693A C8532A Q5693A HP LaserJet 9000 9000L 9040 9050mfps updates Service manual corrections Part number corrections for the combined HP LaserJet 9000mfp 9000Lmfp 9040mtp 9050mfip and HP Color LaserJet For your convenience we have provided a summary of the part number corrections in the table below 9500mtp Scanner ADF Service Manual have been provided on the TechWeb site You may print new pages to replace pages 317 325 in your service manual trom the following URL hito techweb boi ho com Files Manual 232 828656250000 scanner manual corrections doc Service number Exchange number C8523 67902 Q2622 67901 C9147 67926 Q2635 67903 C9168 67906 C8523 67901 Q1312 60001 C8523 60101 Q2679 67901 Q3650 60001 then will roll to Q3650 67901 Q3726 60101 RG5 7780 000CN RG5 5730 000CN RG5 7778 000CN RG5 573 1 O00CN RG5 7779 000CN C8519 69007 Service number Exchange number C9147 67926 C7843 6790 1 J7948 61001 5851 1828 Q3701 60002 RG5 6225 070CN C8532 67902 Not orderable HP LaserJet 9000 9000L 9040 9050mfps updates Description Formatter assembly Formatter assembly Firmware DIMM Firmware CompactFlash Copy processor firmware 8 MB Copy processor board Copy connect card ElO Copy connect cable Copy processor ElO Copy connect board assembly Copy connect cable DC Controll
21. owing issues were resolved e Fax country codes are added for Estonia Iceland Japan Latvia Liechtenstein Lithuania Morocco and Slovenia e The fax icon will not be enabled on the DSS machine after DSS has been re installed A tax job will tail if the default resolution is changed to superfine after starting the job e Faxes that couldn t print caused by paper out for example are lost on power cycle Truncated fax delivery emails in some languages No significant changes were made to any of the other devices HP LaserJet 9000 9000L 9040 9050mfps updates Firmware revisions for all devices included in this firmware bundle Device Firmware revision HP LaserJet 9040mfp series 08 011 5 printers Datecode 20050105 08 011 5 HP 2000 sheet input tray 03 42 C8531A HP Stacker 040820 C8084A HP Stacker Stapler 040819 C8085A HP Multifunction finisher 040827 C8088B HP Multi bin mailbox 040804 Q5693A HP Analog fax accessory 2 32 Q3701A HP Embedded Jetdirect V 28 46 HP Copy Processor Board 0 188 2 1 Slow printing issue HP is working to resolve a slow printing problem with the HP LaserJet 9040mfp 9050mfip The problem typically occurs when switching to a different input tray The device begins printing at about 25 percent of its normal speed Once it starts printing slowly from a tray it tends to continue printing slowly from that tray Switching to another tray will speed it up
22. r supply or DC Controller e Next ensure that the memory DIMMs are properly seated This has previously corrected some instances of blank display e Next if there is still a blank display after reseating the DIMMs completely remove the jumper from the pins and see if this corrects the issue Some cases have been noted where a replaced formatter has had the jumper on the two left side pins rather than the right side pins This will cause a blacked out display and must be corrected If removing the jumper corrects the issue turn off the printer reinstall the jumper on the two right side pins see the photo below for correct positioning power on the printer and verify that it operates correctly BAREIN gt Jumper in the correct position on the right Series numbers for countermeasure CNBXB85427 85839 CNBXCO7921 07930 CNBXD1 1623 11673 CNCXBO0001 amp later CNCXC00001 amp later CNCXDO00001 amp later CNBXG71095 71488 CNCXFO0001 amp later CNCXG00001 amp later CNCXHO00001 amp later Troubleshooting grinding gear noise from tray 3 A grinding noise has been noted on a few HP LaserJet 4250 4350 series printers resulting from poor engagement between the engine and the 500 sheet feeder This has predominantly been noted on tray 3 The engine supplier believes the root cause of this issue is a 0 3 mm shift in the average height of the gear s center line because of the location of the bend of
23. sensors Seventy five units were shipped with an old revision of the drum potential sensor 65AA 228 1KC This sensor was built using epoxy glue The epoxy glue may eventually break generating random service error messages 29 11 12 13 or 14 because of false contact between the sensor and its cable These error messages are directly related to the drum potential value which is sensed and established during the image stabilization process Solution The new drum potential sensor is built with a new process which does not contain epoxy glue and ensures the proper connection of the sensor and its cable A new part number for the sensor is available part number 65AA 228 2KC An exchange part number Q3225 69000 has been set up in order to recover the detective sensors from the field See the service note for this issue at the URL below The service note number is Q3225A 01 hito snserver mayfield ho com ServiceNotes Snwebsite detault asp Upgrade the firmware Firmware 43 0000 for PRCB determines drum potential using a more precise detection method This new method significantly reduces the occurrence of 29 11 12 13 and 14 error messages Upgrade the firmware to version 43 0000 for both PRCB and IMAGE for any new installation and to any unit from the installed base as soon as possible especially to those units experiencing 29 errors to properly troubleshoot the error condition and find the root cause It is very
24. spect the grounding contact lever see instructions under Cause of problem grounding contact lever unhinged on page 4 HP LaserJet 2400 series printer updates 3 Cause of problem grounding contact Solution lever unhinged It the lever is unhinged from the chassis reseat The grounding contact lever may not make the grounding contact lever hinge and strap if proper contact if the lever becomes unhinged to the chassis using an ordinary nylon cable from the chassis see the photo below tie Currently there is not a part number for the nylon cable tie When the part number has been set up we will update the service note In the meantime please use a nylon cable tie that contorms to the dimensions in the drawing and table below Source information Vendor Hellermann Tyton Product name MS Tie URL www hellermanntyton com HT netblast paqes index html Grounding contact lever unhinged Model number Material Color Tying Dimensions mm Tensile strength diameter 1 A B C T direction loop Max f mm N kgf T18R Nylon 66 4 8 80 0 8 16 A aim B IT DI i l L Service recommendations We recommended you perform this service for units with affected serial numbers that are being serviced for any reason This will prevent dislodgement upon return to the customer or any time in the future To identify whether or not a unit should receive this service follow steps one and two SN_CN LABTOBY 1 Verify
25. that the serial numbers fall within the range given for this issue see page 3 2 Look for a black dot on the serial number sticker If the dot is present then this service has already been provided Look for the black dot on the serial number sticker Nylon 66 poly hexamethylene adipamide HP LaserJet 2400 series printer updates 4 Detailed work instructions 1 Remove the optional tray 3 assembly and the toner cartridge 2 Remove the left side cover exercising care with the latch on the lower rear of the cover by pulling out on the lower rear back cover see the photo below Refer to pages 86 through 87 of the HP LaserJet 2400 series printer Service Manual for detailed instructions on caretully removing the lett side cover Remove the left side cover 3 Pre bend the nylon cable tie a Pre bend the cable tie HP LaserJet 2400 series printer updates 4 Thread the cable tie through the hole in the metal side plate Thread the cable tie 5 Loop the nylon cable tie under the bracket on the chassis and around the vertical post of the grounding contact lever and fasten Loop the cable tie 6 Pull the nylon cable tie tight and clip the excess Pull the cable tie tight 7 Reassemble the left side cover exercising 9 Using a black felttipped pen please mark care with the lower be latch You may the serial number sticker with a round find It ae if the engine is l
26. the right side plate near the gear on the 500 sheet feeder This center line or bump controls the spacing between the engine and the 500 sheet feeder in the right front corner Solution or workaround The OEM Original Engine Manufacturer has implemented a modification to the right side plate to move the average height of the center line down 0 3 mm This adjustment increases the center line of the gear to help with proper engagement see the table to the left for serial numbers with the countermeasure implemented Additional countermeasures are also under investigation This problem can also occur through shipping damage or the use of a work surtace that does not fully support the right front corner of the printer and tray Check for proper support of the printer e Turn the printer 90 degrees If this corrects the grinding problem the work surtace is uneven Correcting this condition will fix the problem Raise the right front corner of the printer and wedge two thicknesses of the back of a scratch pad under the printer If this corrects the grinding problem the work surtace is uneven Correcting this condition will fix the problem It these workarounds do not stop the gear from grinding please replace the 500 sheet feeder The B feeder part number Q2440B must be ordered for this printer series HP LaserJet 4250 4350 series printer updates Transfer block assembly not available The OEM does
27. ts No major issues found Minor changes have occurred to this device to help with the reliability of other products No changes have been made since the last firmware release New revision of hardware C8088B First time released with this product 15 Disrupted image defect An unusual print defect called disrupted image can occur with the HP Color LaserJet 9500mfp It is caused by the Image Transfer Belt ITB and typically does not occur until many thousands of pages have been printed The defect occurs in light halftone areas of all colors but is most noticeable in black Description Description of the disrupted image defect in the process direction see the example below e There are lines of small dots in the process direction Example of the disrupted image defect HP Color LaserJet 9500 series printer and 9500mfp updates e Dots are very uniformly spaced with the distance between dots ranging from 5 to 4mm e There may be many lines of dots 30 or more on one page e The dot pitch of each line on the page will vary considerably Description of the disrupted image defect in the scan direction see the example below e Generally accompanies process direction detect e Rough undefined marks that lie on a line in the scan direction Solution Replace the ITB as part of the Image Transfer Kit Process direction 16 HP Color LaserJet 9850 series printer defective drum potential
28. tured 110V units JPCO000000 JPFZ999999 Japan manufactured 220V units BRBOOOOOOO BRDZ999999 Brazil manufactured 110V units BRCOO00000 BRFZ999999 Brazilmanufactured 220V units Troubleshooting 1 Turn the printer off then on again 2 Check the power cord connections at the printer and at the outlet 3 If using a power surge protector verity that the power surge protector is on and working 4 Plug the printer into a different outlet and power cycle the printer Unit exchange part numbers Product number Description Replacement part number Q5955A 220V Replacement for 2410 base Q5955 69055 110V Replacement for 2410 base Q5955 69056 Q5956A 220V Replacement for 2420 base Q5956 69055 110V Replacement for 2420 base Q5956 69056 Q5957A 220V Replacement for 2420d Q5957 69055 110V Replacement for 2420d Q5957 69056 Q5958A 220V Replacement for 2420n Q5958 69055 110V Replacement for 2420n Q5958 69056 Q5959A 220V Replacement for 2420dn Q5959 69055 110V Replacement for 2420dn Q5959 69056 Q5960A 220V Replacement for 2430t Q5960 69055 110V Replacement for 2430t Q5960 69056 Q5961A 220V Replacement for 2430tn Q5961 69055 110V Replacement for 2430tn Q5961 69056 Q5962A 220V Replacement for 2430dtn Q5962 69055 110V Replacement for 2430dtn Q5962 69056 HP LaserJet 2400 series printer updates 5 Verity that the power supplied to the printer is steady and meets printer specitications as shown in the table below 110 volt 110 to 127 volts
29. ying on its black dot above the last character of the right side See pages 86 through 87 of the serial number to indicate that this service HP LaserJet 2400 series printer Service has been provided Manual for detailed instructions on carefully reassembling the left side cover 8 Solution verification You should no longer see the Install Black Toner Cartridge message i You should be able to produce a Lh sza D configuration page of acceptable print quality NITLA SM 151 DoW StiGieaisien 7 If the problem persists troubleshoot for power supply failure see the HP LaserJet 2400 series printer Service Manual and Bad HVPS Main Motor Feed Guide Unit Exchange Service Note for Mark the serial number sticker troubleshooting and solution HP LaserJet 2400 series printer updates 6 Printer will not power up Some customers may report that their HP LaserJet 2400 series printer is DOA defective on arrival or DAW defective after working and that the printer is not showing any sign of powering up These customers may report hearing only a clicking noise and or sense the presence of overheated electronic components The serial number range of units possibly affected are shown in the table below Starting serial Ending serial Description number number CNBOOOO0000 CNDZ999999 China manufactured 110V units CNCOO000000 CNFZ999999 China manufactured 220V units JPBO000000 JPDZ999999 Japan manufac
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