3 Solve problems. Solve problems checklist. Menu map. Troubleshooting process. Tools for troubleshooting. Clear paper jams

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1 Solve problems To use the information in this chapter, you need to have a basic understanding of the HP LaserJet printing process. Explanations of each mechanical assembly, the printer systems, and the basic theory of operation are contained in Theory of operation on page. Do not perform any of these troubleshooting processes unless you understand the function of each product component. Solve problems checklist Menu map Troubleshooting process Tools for troubleshooting Clear paper jams Solve paper-handling problems Use manual print modes Solve image-quality problems Clean the product Solve performance problems Solve connectivity problems Service mode functions Product updates ENWW

2 Solve problems checklist If the product is not responding correctly, complete the steps in the following checklist, in order. If the product does not pass a step, follow the corresponding troubleshooting suggestions. If a step resolves the problem, you can stop without performing the other steps on the checklist.. Make sure that the control-panel display shows one of the following messages: Ready, PAUSED, or SLEEP MODE ON. If no lights are illuminated or the display does not say Ready, PAUSED, or SLEEP MODE ON, see Power subsystem on page 40.. Check the cables. a. Check the cable connection between the product and the computer or network port. Make sure that the connection is secure. b. Make sure that the cable itself is not faulty by using a different cable, if possible. c. Check the network connection. See Solve connectivity problems on page 48.. Ensure that the print media that you are using meets specifications. 4. Print a configuration page. If the product is connected to a network, an HP Jetdirect page also prints. a. If the pages do not print, check that at least one tray contains print media. b. If the page jams in the product, see Clear paper jams on page If the configuration page prints, check the following items. a. If the page prints correctly, the product hardware is working. The problem is with the computer you are using, with the printer driver, or with the program. b. If the page does not print correctly, the problem is with the product hardware. 6. Does the image quality meet the user's requirements? If yes, see step 7. If no, check the following items: Print the print-quality (PQ) troubleshooting pages. See Print-quality-troubleshooting pages on page 0 in this chapter. Solve the print-quality problems, and then see step At the computer, check to see if the print queue is stopped, paused, or set to print offline. Windows: Click Start, click Settings, and then click Printers or Printers and Faxes. Double-click HP Color LaserJet CP455. -or- Mac OS X: Open Printer Setup Utility, and then double-click the line for the HP Color LaserJet CP Chapter Solve problems ENWW

3 8. Verify that you have installed the HP Color LaserJet Enterprise CP400-CP450 Series printer driver. Check the program to make sure that you are using the HP Color LaserJet Enterprise CP400-CP450 Series printer driver. 9. Print a short document from a different program that has worked in the past. If this solution works, the problem is with the program that you are using. If this solution does not work (the document does not print) complete these steps: a. Try printing the job from another computer that has the product software installed. b. If you connected the product to the network, connect the product directly to a computer with a USB cable. Redirect the product to the correct port, or reinstall the software, and select the new connection type that you are using. ENWW Solve problems checklist 5

4 Menu map Print a menu map. Press the OK button to open the menus.. Use the arrow buttons to navigate to the INFORMATION submenu, and then press the OK button.. Use the arrow buttons to navigate to the PRINT MENU MAP submenu, and then press the OK button to print the menu structure. 4. Press the back arrow to exit the menus. 6 Chapter Solve problems ENWW

5 Troubleshooting process Determine the problem source When the product malfunctions or encounters an unexpected situation, the product control panel alerts you to the situation. This section contains a pre-troubleshooting checklist to filter out many possible causes of the problem. A troubleshooting flowchart helps you diagnose the root cause of the problem. The remainder of this chapter provides steps for correcting problems. Use the pre-troubleshooting checklist to evaluate the source of the problem and to reduce the number of steps that are required to fix the problem. Use the troubleshooting flowchart to pinpoint the root cause of hardware malfunctions. The flowchart guides you to the section of this chapter that contains steps for correcting the malfunction. Before beginning any troubleshooting procedure, check the following issues: Are supply items within their rated life? Does the configuration page reveal any configuration errors? NOTE: The customer is responsible for checking supplies and for using supplies that are in good condition. Pre-troubleshooting checklist The list below describes basic questions to ask the customer to help quickly define the problem or problems. Table - Pre-troubleshooting checklist Environment Is the product installed on a solid, level surface? Is the product exposed to particle matter or dust? Is the power-supply voltage within ± 0 volts of the specified power source? Is the power supply plug inserted in the product and directly to the wall outlet (not a power strip)? Is the operating environment within the specified parameters, as listed in chapter of this manual? Is the product exposed to ammonia gas, such as that produced by diazo copiers or office cleaning materials? Is the product exposed to direct sunlight? Media Does the customer use only supported media? Is the media in good condition (contains no curls, folds, and so forth)? Is the media stored correctly and within environmental limits? ENWW Troubleshooting process 7

6 Table - Pre-troubleshooting checklist (continued) Input trays Is the amount of media in the tray within specifications? Is the media correctly placed in the tray? Are the paper guides aligned with the stack? Is the paper tray correctly installed in the product? Print cartridges Is each print cartridge installed correctly? Are original HP print cartridges installed? Are the cartridges damaged? ITB and fuser Are the ITB and fuser correctly installed? Is the ITB or fuser damaged? Covers Are the right and front doors closed? Condensation Does condensation occur following a temperature change (particularly in winter following cold storage)? If so, wipe the affected area dry or leave the product on for 0 to 0 minutes. Was a print cartridge installed soon after being moved from a cold to a warm room? If so, allow the product to sit at room temperature for one to two hours. Miscellaneous Check for and remove any non-hp components (print cartridges, memory modules, and EIO cards) from the product. Remove the product from the network, and make sure that the failure is with the product before beginning troubleshooting. For any print-quality issues, calibrate the product. See Calibrate the product on page. 8 Chapter Solve problems ENWW

7 Troubleshooting flowchart This flowchart highlights the general processes that you can follow to quickly isolate and solve product hardware problems. Each row depicts a major troubleshooting step. A yes answer to a question allows you to proceed to the next major step. A no answer indicates that more testing is needed. Go to the appropriate section in this chapter, and follow the instructions there. After completing the instructions, go to the next major step in this troubleshooting flowchart. Table - Troubleshooting flowchart Power on Control panel messages Event log Is the product on and does a readable message display? Yes No Does the message Ready display on the control panel? Yes No Open the DIAGNOSTICS menu and print an event log to see the history of errors with this product. Does the event log print? Follow the power-on troubleshooting checks. See Power subsystem on page 40. After the control panel display is functional, see step. If an error message displays, see Interpret control-panel messages on page 45. After the errors have been corrected, go to step. If the event log does not print, see Print an event log on page 76. If paper jams inside the product, see Clear paper jams on page 8. Yes No If error messages display on the control panel when you try to print an event log, see Interpret control-panel messages on page 45. After successfully printing and evaluating the event log, see step 4. 4 Information pages Open the INFORMATION menu and print the configuration pages to verify that all the accessories are installed. Are all the accessories installed? If accessories that are installed are not listed on the configuration page, remove the accessory and reinstall it. After evaluating the configuration pages, see step 5. Yes No 5 Image quality 6 Interface Does the print quality meet the customer's requirements? Yes No Can the customer print successfully from the host computer? Yes. This is the end of the troubleshooting process. No Compare the images with the sample defects in the image defect tables. See Image defects table on page 40. After the print quality is acceptable, see step 6. Verify that all I/O cables are connected correctly and that a valid IP address is listed on the Jetdirect configuration page. If error messages display on the control panel, see Interpret controlpanel messages on page 45. When the customer can print from the host computer, this is the end of the troubleshooting process. ENWW Troubleshooting process 9

8 Power subsystem Power-on checks The basic product functions should start up when the product is plugged into an electrical outlet and the power switch is pushed to the on position. If the product does not start, use the information in this section to isolate and solve the problem. Power-on troubleshooting overview Turn on the product power. If the control panel display remains blank, random patterns display, or asterisks remain on the control panel display, perform power-on checks to find the cause of the problem. During normal operation, the main cooling fan begins to spin briefly after the product power is turned on. Place your hand over the holes in the left-side cover, near the formatter. If the fan is operating, you will feel air passing out of the product. You can also lean close to the product and hear the fan operating. You can also place your hand over the hole in the right-rear lower corner. If the fan is operating, you should feel air being drawn into the product. When this fan is operational, the DC side of the power supply is functioning correctly. After the fan is operating, the main motor turns on (unless the right or front cover is open, a jam condition is sensed, or the paper-path sensors are damaged). You might be able to visually and audibly determine if the main motor is turned on. If the fan and main motor are operating correctly, the next troubleshooting step is to isolate print engine, formatter, and control panel problems. Perform an engine test (see Engine-test button on page 44). If the formatter is damaged, it might interfere with the engine test. If the engine-test page does not print, try removing the formatter and then performing the engine test again. If the engine test is then successful, the problem is almost certainly with the formatter, the control panel, or the cable that connects them. If the control panel is blank when you turn on the product, check the following items.. Make sure that the product is plugged directly into an active electrical outlet (not a power strip) that delivers the correct voltage.. Make sure that the power switch is in the on position.. Make sure that the fan runs briefly, which indicates that the power supply is operational. 4. Make sure that the control panel display wire harness is connected. 5. Make sure that the formatter is seated and operating correctly. Turn off the product and remove the formatter. Reinstall the formatter, and then verify that the heartbeat LED is flashing. 6. Remove any HP Jetdirect or other EIO cards, and then try to turn the product on again. NOTE: If the control panel display is blank, but the main cooling fan runs briefly after the product power is turned on, try printing an engine-test page to determine whether the problem is with the control-panel display, formatter, or other product components. See Engine-test button on page 44. Power-on timing (approximate) seconds; power-button LED illuminates 00.0 seconds; control panel backlight illuminates (dim) and engine noises begin 00:4 seconds; memory count appears on the control-panel display and fans rotate at high speed 40 Chapter Solve problems ENWW

9 00:6 seconds; HP logo appears on the control-panel display 00:60 seconds; engine noises stop (you can run engine test at this point) 00:8 seconds; Initializing continues 00:85 fans rotate at slow speed 00:90 seconds; product enters the Ready state ENWW Troubleshooting process 4

10 Tools for troubleshooting The section describes the tools that can help you solve problems with your device. Individual component diagnostics LED diagnostics LED, engine, and individual diagnostics can identify and troubleshoot product problems. Understand lights on the formatter Three LEDs on the formatter indicate that the product is functioning correctly. Formatter connectivity LED (lit when formatter is correctly seated) HP Jetdirect LEDs Heartbeat LED HP Jetdirect LEDs The embedded HP Jetdirect print server has two LEDs. The yellow LED indicates network activity, and the green LED indicates the link status. A blinking yellow LED indicates network traffic. If the green LED is off, a link has failed. For link failures, check all the network cable connections. In addition, you can try to manually configure the link settings on the embedded print server by using the product control-panel menus.. Press the Home button.. Press the down arrow to highlight the CONFIGURE DEVICE menu, and then press the OK button.. Press the down arrow to highlight the I/O menu, and then press the OK button. 4 Chapter Solve problems ENWW

11 Heartbeat LED 4. Press the down arrow to highlight the EMBEDDED JETDIRECT MENU option, and then press the OK button. 5. Press the down arrow to highlight the LINK SPEED menu, and then press the OK button. 6. Select the appropriate link speed, and then press the OK button. The heartbeat LED indicates that the formatter is functioning correctly. While the product is initializing after you turn it on, the LED blinks rapidly, and then turns off. When the product has finished the initialization sequence, the heartbeat LED pulses on and off. Engine diagnostics This section provides an overview of the engine diagnostics that are available in the HP Color LaserJet Enterprise CP400-CP450 Series product. The product contains extensive internal diagnostics that help in troubleshooting print quality, paper path, noise, component, and timing issues. Defeating interlocks Different tests can be used to isolate different types of issues. For component or noise isolation, you can run the diagnostic test when the front and right doors are open. To operate the product with the doors open, the door switch levers must be depressed to simulate a closed-door position. WARNING! Be careful when performing printer diagnostics to avoid risk of injury. Only trained service personnel should open and run the diagnostics with the covers removed. Never touch any of the power supplies when the printer is turned on.. Open the right and front doors.. Insert a folded piece of paper into the right-door switch slot. Figure - Diagnostic test ( of ) ENWW Tools for troubleshooting 4

12 . Insert a folded piece of paper into each slot at the same time until the product is in a Ready state. Figure - Diagnostic test ( of ) Disable cartridge check Use this diagnostic test to print internal pages or send an external job to the product when one or more print cartridges are removed or exchanged. Consumable supply errors are ignored while the product is in this mode. When the product is in this mode, you can navigate the menus and print internal pages or send an external print job to the product. This test can be used isolate problems, such as noise, and to isolate print-quality problems that are related to individual print cartridges. NOTE: Color cartridges are not keyed and can be interchanged. The black print cartridge is keyed and cannot fit into any other position. An error will display on the control panel if a print cartridge is installed in the wrong position. The SUPPLIES STATUS menu will explain which print cartridge is misplaced. NOTE: Do not remove or exchange print cartridges and image drums until after you start the disable cartridge check diagnostic. Engine-test button. Press the Home button.. Press the down arrow to highlight DIAGNOSTICS, and then press the OK button.. Press the down arrow to highlight DISABLE CARTRIDGE CHECK, and then press the OK button. To exit this diagnostic test, press Stop and then select EXIT DIAGNOSTICS. To verify that the product engine is functioning, print an engine test page. Use a small pointed object to depress the test-page switch located on the rear of the product. The test page should have a series of 44 Chapter Solve problems ENWW

13 horizontal lines. The test page can use only Tray as the paper source, so make sure that paper is loaded in Tray. Figure - Engine-test button Paper-path test This diagnostic test generates one or more test pages that you can use to isolate the cause of jams. To isolate a problem, specify which input tray to use, specify whether to use the duplex path, and specify the number of copies to print. Multiple copies can be printed to help isolate intermittent problems. The following options become available after you start the diagnostic feature: PRINT TEST PAGE. Run the paper-path test from the default settings: Tray, no duplex, and one copy. To specify other settings, scroll down the menu and select the setting, and then scroll back up and select PRINT TEST PAGE to start the test. SOURCE. Select Tray, Tray, or the optional tray. DUPLEX. Enable or disable two-sided printing. COPIES. Set the numbers of copies to be printed; the choices are,0, 50, 00, or Press the Home button.. Press the down arrow to highlight DIAGNOSTICS, and then press the OK button.. Press the down arrow to highlight PAPER PATH TEST, and then press the OK button. 4. Select the paper-path test options for the test you want to run. ENWW Tools for troubleshooting 45

14 Manual sensor test (special-mode test) Use this diagnostic test to manually test the product sensors and switches. Each sensor is represented by a letter and number on the control panel display.. Press the Home button.. Press the down arrow to highlight the DIAGNOSTICS menu, and then press the OK button.. Press the down arrow to highlight the MANUAL SENSOR TEST option, and then press the OK button. To exit this diagnostic, press the Stop button, and then select EXIT DIAGNOSTICS. Menus cannot be opened during this test, so the OK button serves the same function as the Stop button. Table - Manual sensor diagnostic tests Sensor or switch name A TOP (top of page) sensor B loop sensor C loop sensor D fuser delivery sensor E duplex re-pickup sensor F output bin full sensor G H I developer alienation J fuser pressure-release sensor K primary transfer-roller-disengagement sensor L media sensor M front door open N right door open Sensor or switch number SR0 SR4 SR5 SR5 SR SR6 Not used Not used SR SR7 SR9 SR SW5 SW6 When performing these tests, watch for the corresponding bit to toggle from to 0 or 0 to. It can take a few seconds for bits to toggle. Table -4 Default state of bits Label A B C D E F G H I J K L M N Bit Chapter Solve problems ENWW

15 A TOP (top of page) sensor. Open the right door.. Insert a piece of paper to activate the TOP sensor. Figure -4 Test the TOP sensor ( of ) NOTE: Open the registration shutter to verify the paper activates the sensor. Figure -5 Test the TOP sensor ( of ). Check the control-panel display for sensor response. 4. If there is no response, replace the registration assembly. See Registration assembly on page 8. ENWW Tools for troubleshooting 47

16 B and C loop sensors. Open the right door.. Lower the secondary transfer assembly.. Slowly insert a piece of paper at the entrance of the fuser to activate the B and C loop sensors underneath the fuser. Figure -6 Test the loop sensors 4. Check the control-panel display for a sensor response. 5. If there is no response, replace fuser. See Fuser on page Chapter Solve problems ENWW

17 D fuser delivery sensor. Open the right-door assembly.. Lower the secondary transfer assembly.. Remove the fuser, and then verify that the sensor flag on the fuser moves freely. If the sensor flag does not move freely, replace the fuser. See Fuser on page 85. Figure -7 Test the fuser delivery sensor ( of ) 4. Insert a piece of paper to activate the fuser delivery sensor. Figure -8 Test the fuser delivery sensor ( of ) 5. Check the control-panel display for a sensor response. 6. If there is no response, replace the fuser delivery sensor. ENWW Tools for troubleshooting 49

18 E duplex re-pickup sensor. Open the right door.. Lift the secondary-transfer assembly.. Press the flag to activate the sensor. Figure -9 Test the duplex re-pickup sensor 4. Check the control-panel display for sensor response. 5. If there is no response, replace the registration assembly. See Registration assembly on page Chapter Solve problems ENWW

19 F output bin full sensor NOTE: The front-top, rear-top, and right-front covers have been removed for clarity.. Lift the flapper on the delivery assembly to move the output-bin full sensor flag. Figure -0 Test the output-bin-full sensor. Check the control-panel display for sensor response.. If there is no response, remove the right-front cover (see Right-front cover on page 0) and verify that the flag is moving. If not, replace the delivery assembly. See Delivery assembly on page 45. If the sensor is malfunctioning, replace the sensor. ENWW Tools for troubleshooting 5

20 I developer alienation This sensor is located inside the main-drive assembly and cannot be accessed for direct manual testing. To test this sensor, do the following.. Access the manual-sensor test menu and select sensor test I.. Locate connector J on the DC controller PCA. CAUTION: ESD sensitive component.. Disconnect connector J. The value shown on the control-panel display changes from 0 to if the sensor is properly functioning. 5 Chapter Solve problems ENWW

21 J fuser pressure-release sensor. Open the right-door assembly.. Lower the secondary transfer assembly.. Remove the fuser. 4. Insert a piece of paper to activate the fuser pressure-release sensor. Figure - Test the fuser pressure-release sensor 5. Check the control-panel display for sensor response. 6. If there is no response, replace fuser pressure-release sensor. ENWW Tools for troubleshooting 5

22 K primary transfer-roller-disengagement sensor NOTE: The front-top, rear-top, and right-front covers have been removed for clarity.. Open the right-door assembly.. Lower the secondary transfer assembly, and then remove the fuser and ITB.. Rotate the gear (callout ) to move the flag (callout ). If the flag does not move, replace the ITB. Figure - Test the primary transfer-roller-disengagement sensor ( of 4) Figure - Test the primary transfer-roller-disengagement sensor ( of 4) 54 Chapter Solve problems ENWW

23 4. From inside the ITB cavity, press up on the primary-transfer-roller-disengagement flag to activate the sensor. Figure -4 Test the primary transfer-roller-disengagement sensor ( of 4) 5. Check the control-panel display for sensor response. 6. If there is no response, remove the rear-top cover (see Rear-top cover on page 0) and verify that the flag is moving. Figure -5 Test the primary transfer-roller-disengagement sensor (4 of 4) 7. If the flag moves correctly, replace the sensor. ENWW Tools for troubleshooting 55

24 L media sensor. You cannot test this sensor with a manual sensor test. Test using the paper-path sensors test. See Paper-path sensors test on page 7. Figure -6 Media sensor. Access the paper-path sensors test.. Print a configuration page. 4. The media sensor (on the registration assembly) detects the type of media as it passes the sensor. The control-panel display changes based on the media type. NOTE: The following are examples only. The value that will display depends on the type of media being used to print the page. ; displays if the media type is OHT 4; displays if the media type is Soft gloss ; displays if the media type is HP multipurpose paper D; displays if the media type is Premium Choice lb 56 Chapter Solve problems ENWW

25 M front-door switch. Open the front-door assembly to disengage the front-door switch. Figure -7 Test the front-door switch. Close the front-door assembly, and then check the control panel on the product for sensor response. TIP: You can leave the front door open and use a slender blade screw driver or pencil to activate the switch.. If there is no response, replace the front-door switch. ENWW Tools for troubleshooting 57

26 N right-door switch. Open the right-door assembly to disengage the right-door switch. Figure -8 Test the right door switch. Close the right-door assembly, or use your finger to depress the switch flag, and check the control panel on the product for sensor response.. If there is no response, replace the right-door switch. 58 Chapter Solve problems ENWW

27 Manual sensor test (special-mode test) Use this test to test paper-path sensors and the paper-size switches manually. The following illustrations and table show the locations of these sensors.. Press the Home button.. Press the down arrow to highlight the DIAGNOSTICS menu, and then press the OK button.. Press the down arrow to highlight the MANUAL SENSOR TEST option, and then press the OK button. Table -5 Manual sensor test diagnostic tests Sensor or switch name O Tray paper present sensor P Tray paper present sensor Q Tray paper surface and sensors R Tray paper size switches S Tray paper present sensor T Tray feed sensor U Tray paper surface and sensors V Tray paper size switches W Tray 4 paper present sensor X Tray 4 feed sensor Y Tray 4 paper surface and sensors Z Tray 4 paper size switches a Tray 5 paper present sensor b Tray 5 feed sensor c Tray 5 paper surface and sensor d Tray 5 paper size switches Sensor or switch number SR8 SR5 SR and SR4 SW4 SR (paper feeder) SR4 (paper feeder) SR and SR (paper feeder) SW (paper feeder) SR6 (paper feeder) SR7 (paper feeder) SR5 and SR8 (paper feeder) SW (paper feeder) SR (paper feeder) SR0 (paper feeder) SR9 and SR (paper feeder) SW4 (paper feeder) The following items cannot be tested using the manual sensor test. 5 V laser and 4 V interlock switches SW and SW Power switch New ITB sensor Tray, 4, and 5 right door switch SW SR0 SW (paper feeder) To perform these tests, do the following: Remove the appropriate tray. Watch for the corresponding bit to toggle from to 0 or 0 to. It can take a few seconds for bits to toggle. ENWW Tools for troubleshooting 59

28 Table -6 Default state of bits Label O P Q R S T U V W X Y Z a b c d Bit Test each switch individually. 60 Chapter Solve problems ENWW

29 O Tray paper present sensor. Open Tray.. Toggle the Tray paper-present sensor flag. Figure -9 Test the Tray media-present sensor. Check the control-panel display for sensor response. 4. If there is no response, replace Tray. ENWW Tools for troubleshooting 6

30 P Tray paper present sensor. Remove Tray.. Toggle the tray paper-present sensor flag. Figure -0 Test the tray paper-present sensor. Check the control-panel display for sensor response. 4. If there is no response, replace the cassette-pickup assembly. See Tray-pickup assembly on page Chapter Solve problems ENWW

31 Q Tray paper surface and sensors. Remove the tray.. In the tray cavity, press the tray-closed tab to release the flag, and then toggle the flag. Figure - Tray paper surface and. Check the control-panel display for sensor response. 4. If there is no response, replace the cassette-pickup assembly. See Tray-pickup assembly on page 80. ENWW Tools for troubleshooting 6

32 R Tray paper size switches NOTE: These switches also detect cassette presence. If these switches fail, the message TRAY <X> OPEN could appear on the control-panel display.. Remove the tray. From inside the tray cavity, push any of the three buttons. Figure - Test the Tray paper size switches. Check the control-panel display for sensor response.. If there is no response, replace the lifter assembly. See Lifter base assembly on page Chapter Solve problems ENWW

33 S Tray paper present sensor See P Tray paper present sensor on page 6. T Tray feed sensor. Remove the tray.. Insert a piece of paper between the rollers to activate the feed sensor. TIP: Use stiff paper when performing this test (for example a business card or index card). Figure - Test the Tray feed sensor. Check the control-panel display for sensor response. 4. If no response, replace the cassette-pickup assembly. See Tray-pickup assembly on page 80. U Tray paper surface and sensors See Q Tray paper surface and sensors on page 6. V Tray paper size switches See R Tray paper size switches on page 64. W Tray 4 paper present sensor See P Tray paper present sensor on page 6. X Tray 4 feed sensor See T Tray feed sensor on page 65. Y Tray 4 paper surface and sensors See Q Tray paper surface and sensors on page 6. ENWW Tools for troubleshooting 65

34 Z Tray 4 paper size switches See R Tray paper size switches on page 64. a Tray 5 paper present sensor See P Tray paper present sensor on page 6. b Tray 5 feed sensor See T Tray feed sensor on page 65. c Tray 5 paper surface and sensors See Q Tray paper surface and sensors on page 6. d Tray 5 paper size switches See R Tray paper size switches on page Chapter Solve problems ENWW

35 5V laser and 4V interlock and logic switches (and power switch) Location and testing. Press the power switch to turn the product off then on to test the switch function.. Remove the right-front cover. See Right-front cover on page 0.. Locate the link arms (callout ) on the front and right doors (and access ports in the covers; callout ) that actuate the front- and right-door interlock switch (behind the right-front cover). ENWW Tools for troubleshooting 67

36 4. Open and close the doors to make sure that the interlock switches are correctly functioning. The following figures show the interlock switch position with the front and right doors open and closed. Defeating Front-door safety switch Fold a stiff piece of paper, for example a business card or index card, into a 0 mm (.75 in) strip, and then wedge the strip into the opening at the front of the product. 68 Chapter Solve problems ENWW

37 Front-door logic switch Fold a stiff piece of paper, for example a business card or index card, into a 0 mm (.75 in) strip with a bend at the end, and insert the strip into the opening at the front of the product. Right-door safety switch Fold a stiff piece of paper, for example a business card or index card, into a 0 mm (.75 in) strip, and then insert the strip into the opening at the right of the product. ENWW Tools for troubleshooting 69

38 Right-door logic switch Use masking tape to keep the switch flag depressed. TIP: flag. You might have to use two pieces of tape to overcome the tension return spring on the 70 Chapter Solve problems ENWW

39 New ITB sensor NOTE: This sensor cannot be tested, but you can inspect the sensor, actuator, and the flag on the ITB for damage.. Remove the existing ITB.. Inspect the new ITB sensor. Press the actuator on the sensor toward the cyan print cartridge to verify that the actuator moves. Figure -4 Test the new ITB sensor. On the new ITB, locate and inspect the new ITB flag (callout ). TIP: The new ITB flag is only present prior to installation. To see the flag on a previously installed ITB, insert the end of a paperclip in the hole just below the handle (callout ) and then rotate the ITB alienation gear (callout ). Figure -5 Test the new ITB sensor ENWW Tools for troubleshooting 7

40 Tray, 4, and 5 right door switch NOTE: There is no manual sensor test for this sensor.. Open the paper feeder right door. Check the control-panel display for the CLOSE LOWER RIGHT DOOR message. If the message does not display, open the door and inspect the flag for damage (callout ).. Insert a piece of paper to activate the sensor. If there is no response, replace the switch. NOTE: Make sure that the door flag (callout ) is not damaged or missing. Figure -6 Test the right door switch 7 Chapter Solve problems ENWW

41 Paper-path sensors test This test displays the status of each paper-path sensor and allows viewing of sensor status while printing internal pages.. Press the Home button.. Press the down arrow to highlight the DIAGNOSTICS, menu and then press the OK button.. Press the down arrow to highlight the PAPER PATH SENSORS option, and then press the OK button. 4. Select the paper-path test options for the test you want to run. NOTE: Print an internal page to view sensor activity. Table -7 Paper-path sensors diagnostic tests Sensor name A TOP (top of page) sensor B loop sensor C loop sensor D fuser delivery sensor E duplex re-pick up sensor F output bin full sensor G H I developer alienation J fuser pressure-release sensor K primary transfer-roller-disengagement sensor L media sensor Sensor number SR0 SR4 SR5 SR5 SR SR6 Not used Not used SR SR7 SR9 SR NOTE: The value for this test varies depending on the type of media used for the test. For example, a displays for HP Multi-purpose paper; a D displays for HP Premium Choice lb paper. Print/stop test Use this diagnostic test to isolate the cause of problems such as image-formation defects and jams within the engine. During this test you can stop the paper anywhere along the product paper path. The test can be programmed to stop printing internal pages or an external print job when the paper reaches a certain position. The test can also be programmed to stop from 0 to 60,000 ms. If the timer is set to a value that is greater than the job-print time, you can recover the product in one of two ways. After the print job is completed press Stop to return to the DIAGNOSTICS menu before the timer times out. After the timer times out, press Stop. Activate the door switch to restart the engine and return it to a normal state. ENWW Tools for troubleshooting 7

42 When the timer trips, the control panel display shows the message PRINTING STOPPED To continue press OK. Pressing Home will print the previously selected job. If you do not want the previous job to print, press Stop first, and then press Menu. NOTE: Do not try to perform a print/stop test while the product is calibrating, because you be required to power-cycle the product. If a jam message displays on the control panel during testing, activate the door switch. Component tests Component test (special-mode test) This test activates individual parts independently to isolate problems. Each component test can be performed once or repeatedly. If you select CONTINUOUS from the dropdown menu as the repeat option, the test cycles the component on and off. This process continues for two minutes, and then the test terminates. NOTE: The front or side door interlocks must be defeated to run the component tests. Some tests may require that the ITB and print cartridges be removed. The control panel display prompts you to remove some or all cartridges during certain tests.. Press the Home button.. Press the down arrow to highlight DIAGNOSTICS, and then press the OK button.. Press the down arrow to highlight COMPONENT TEST, and then press the OK button. 4. Select the component test options for the test you want to run. Table -8 Component test details Component test Motor or solenoid number Comments TRANSFER MOTORS M M M4 M5 M6 Activates four drum motors and the ITB motor (M). BELT ONLY M Activates the ITB motor. CARTRIDGE MOTORS M: yellow M4: magenta Activates each drum motor sequentially (K, C, M, Y). M5: cyan M6: black BLACK LASER SCANNER M8 Activates the black/cyan scanner motor for 0 seconds. CYAN LASER SCANNER M8 Activates the black/cyan scanner motor for 0 seconds. MAGENTA LASER SCANNER M9 Activates the yellow/magenta scanner motor for 0 seconds. 74 Chapter Solve problems ENWW

43 Table -8 Component test details (continued) Component test Motor or solenoid number Comments YELLOW LASER SCANNER M9 Activates the yellow/magenta scanner motor for 0 seconds. FUSER MOTOR M Activate the fuser motor at a specified speed for 0 seconds. FUSER PRESSURE RELEASE MOTOR M reverse Reverses the fuser motor and pressurizes or depressurizes the fuser. ALIENATION MOTOR M0 Activates CMYK developer alienation in the following sequence: All colors engaged, all colors alienated, K-only engaged, and K alienated. ITB CONTACT ALIENATION MOTOR M SL Activates the fuser motor and primary transfer solenoid to cycle through the ITB alienation stages. TCU MOTOR M Activates the motor at a specified speed for 0 seconds. TRAY PICKUP SOLENOID SL Activates the solenoid for 0 seconds. TRAY PICKUP MOTOR M Activates the pickup motor in reverse for 0 seconds. TRAY PICKUP SOLENOID SL4 Activates the solenoid for 0 seconds. TRAY PICKUP MOTOR M Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. TRAY PICKUP SOLENOID SL Activates the solenoid for 0 seconds. TRAY 4 PICKUP MOTOR M Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. TRAY 4 PICKUP SOLENOID SL Activates the solenoid for 0 seconds. TRAY 5 PICKUP MOTOR M Activates the motor in the paper-feeder assembly and drives the separation roller for each tray in reverse. TRAY 5 PICKUP SOLENOID SL Activates the solenoid for 0 seconds. DUPLEX PICKUP MOTOR M: Duplex reverse motor Activates the motor at a specified speed for 0 seconds. ENWW Tools for troubleshooting 75

44 Table -8 Component test details (continued) Component test Motor or solenoid number Comments DUPLEX REFEED CLUTCH SOLENOID SL: duplex reverse solenoid Activates the duplex flapper solenoid for 0 seconds causing the switch-back diverter to move. REPEAT Allows you to specify the number of times the product sequences. The choices are ONCE (default) and CONTINUOUS. To terminate the test, press STOP 76 Chapter Solve problems ENWW

45 Diagrams Block diagrams Figure -7 Product cross section Item Description Item Description ITB Media sensor Primary transfer roller Registration shutter Duplex flapper (duplex model) 4 MP tray pickup roller 4 Duplex reverse roller (duplex model) 5 MP tray separation pad 5 Pressure roller 6 Registration roller 6 Fuser 7 Cassette separation roller 7 Fuser sleeve 8 Cassette feed roller 8 Duplex feed roller (duplex model) 9 Cassette pickup roller 9 Secondary transfer roller 0 Photosensitive drum 0 ITB drive roller Cassette RD sensor Laser/scanner assembly ENWW Tools for troubleshooting 77

46 Figure -8 Optional paper feeder ( x 500-sheet) 5 4 Item Description Pickup roller Feed roller Separation roller 4 Storage space 5 Cassette 78 Chapter Solve problems ENWW

47 Figure -9 Optional paper feeder ( x 500-sheet) 4 Item Description Pickup roller Feed roller Separation roller 4 Cassette ENWW Tools for troubleshooting 79

48 Plug/jack locations 4 Hi-speed USB.0 printing port Local area network (LAN) ethernet (RJ-45) network port EIO interface expansion slot 4 Slot for a cable-type security lock Figure -0 Formatter PCA 4 Table -9 Formatter PCA Item Description DIMM slot Internal hard drive USB ports 4 EIO slot 80 Chapter Solve problems ENWW

49 Location of connectors DC controller connector locations NOTE: The DC controller has 6 connectors: Five are for FFCs, 7 are for wire harnesses, and four are not used. Figure - DC controller connector locations J J40 J6 J7 J9 J8 J06 J J J6 J0 J0 J60 J54 J55 J0 J0 J J45 J48 J47 J05 J07 J08 J5 J0 J5 J5 J5 J0 J J6 J4 J J50 J6 Table -0 DC controller connectors J0: not used J5: SL4, SL, SL4, SL5, and HVPS lower J45: TOP (top of page) sensor (SR0) TOP (top of page) sensor (SR0), duplex re-pickup sensor (SR), and duplex repickup clutch (CL) (HP Color LaserJet CP455dn, HP Color LaserJet CP405dn, and HP Color LaserJet CP455xh only) J0: not used J6: HVPS upper (FFC) J47: right-door switch (SW6) J0: laser scanner temperature sensor (TH4) J0: yellow drum motor (M) and magenta drum motor (M4) J48: MP-tray-media-presence sensor (SR8) and MP-tray pickup solenoid (SL) J05: interconnect board (ICB) J: cyan drum motor (M5) and black drum position (M6) J50: LVPS ENWW Tools for troubleshooting 8

50 Table -0 DC controller connectors (continued) J06: not used J: fuser motor (M) J5: LVPS J07: Tray, 4, and 5 lifter motors (M7), and cassette paper size switch (SW4) J6: memory tag connector J5: 5V interlock switch (SW) J08: environmental sensor J7: pre-exposure LEDs (rear), fuser delivery sensor (SR5), New ITB sensor (SR0) J0: YM laser (FFC) J8: Delivery tray media full sensor (SR6), Fuser pressure release sensor (SR7), and pre-exposure LEDs (front) J5: power supply fan (FM) J54: not used J: CK laser (FFC) J9: front-door switch (SW5) J55: Residual toner-feed motor (M) and delivery fan (FM) J: cyan/black scanner motor (M8), yellow/magenta scanner motor (M9), and developing disengagement sensor (SR) J0: registration density (RD) sensors (front and rear) J60: fuser J: 4 v to high-voltage power supply (HVPS) upper (FFC) J: media sensors J6: LVPS J4: HVPS lower (FFC) J40: ITB motor (M), yellow drum home-position sensor (SR), magenta drum home-position sensor (SR), cyan drum home-position sensor (SR), black drum home-position sensor (SR4), and primary transfer roller disengagement solenoid (SL) J6: fuser 8 Chapter Solve problems ENWW

51 Controller PCA ( x 500-sheet and x 500-sheet optional paper feeders) Figure - Controller PCA connectors J40 J409 J408 J404 J407 J406 J40 J405 J40 J40 Table - Controller PCA connectors J40: not used J40: lifter motor signal J40: cassette media presence J404: right door open sensor J405: lifter motor signal J406: cassette media presence J407: lifter motor signal J408: cassette media presence J409: pickup motor J40: communication (command) ENWW Tools for troubleshooting 8

52 Locations of major components Figure - External component locations Item Description Item Description Rear-top cover 7 Power-supply cover Right-door assembly 8 Rear cover Right-rear cover 9 Tray 4 Right-front cover 0 Front-door assembly 5 Upper-left cover Control-panel assembly 6 Left cover Front-top cover 84 Chapter Solve problems ENWW

53 Figure -4 Major component locations ( of ) Item Description Main drive assembly Fuser Registration assembly 4 Toner collection unit 5 Laser/scanner assembly (C/Bk) 6 Laser/scanner assembly (Y/M) ENWW Tools for troubleshooting 85

54 Figure -5 Major component locations ( of ) Item Description Item Description Duplex-drive assembly 6 Delivery fan MP tray assembly 7 Cartridge fan Delivery assembly 8 Residual toner full sensor 4 RD sensor assembly 9 Residual-toner-feed motor 5 Tray-pickup assembly 86 Chapter Solve problems ENWW

55 Figure -6 Major component locations ( of ) Item Description Fuser-drive assembly Tray-pickup drive assembly Secondary transfer assembly 4 ITB 5 Lifter-drive assembly 6 Lifter base assembly ENWW Tools for troubleshooting 87

56 Figure -7 Motors, fans, and rollers component locations Ite m Description Item Description Fuser motor 9 Tray feed roller Pickup motor 0 Tray separation roller Tray separation pad Tray pickup roller 4 Yellow drum motor Secondary transfer roller 5 Magenta drum motor Black drum motor 6 Cyan drum motor 4 Developing-disengagement motor 7 ITB motor 5 Tray pickup roller 8 Power supply fan 6 Exhaust fan 88 Chapter Solve problems ENWW

57 Figure -8 PCA component locations Item Description Item Description Interconnect board (ICB) 4 High-voltage power supply upper (HVPS-T) DC controller PCA 5 High-voltage power supply lower (HVPS-D) Low-voltage power supply 6 Environment sensor PCA ENWW Tools for troubleshooting 89

58 Figure -9 Optional paper feeder ( x 500-sheet) component locations ( of ) Item Description Item Description Rear-right cover 5 Rear cover Right door 6 Right front cover Right cover 7 Front door 4 Left cover 8 Tray 90 Chapter Solve problems ENWW

59 Figure -40 Optional paper feeder ( x 500-sheet) component locations ( of ) 5 4 Item Description Item Description Lifter-drive assembly 4 Controller PCA Pickup motor 5 Lifter base assembly Pickup assembly ENWW Tools for troubleshooting 9

60 Figure -4 Optional paper feeder ( x 500-sheet) component locations ( of ) Item Description Item Description Rear right cover 5 Rear cover Right door 6 Right front cover Right cover 7 Trays, 4, and 5 4 Left cover 9 Chapter Solve problems ENWW

61 Figure -4 Optional paper feeder ( x 500-sheet) component locations ( of ) 5 4 Item Description Item Description Lifter-drive assembly (Trays, 4, and 5) 4 Controller PCA Pickup motor 5 Lifter base assembly (Trays, 4, and 5) Pickup assembly (Trays, 4, and 5) ENWW Tools for troubleshooting 9

62 General timing chart Figure -4 General timing chart Print command Operation STBY INTR PRINT LSTR STBY Cassette pickup solenoid TOP sensor Fixing delivery sensor 4 Fixing motor 5 Scanner motor 6 TOP signal 7 Y drum motor 8 M drum motor 9 C drum motor 0 K drum motor ITB motor Pickup motor Primary charging bias Y 4 Primary charging bias M 5 Primary charging bias C 6 Primary charging bias K 7 Developing bias Y 8 Developing bias M 9 Developing bias C 0 Developing bias K Primary transfer bias Y Primary transfer bias M Primary transfer bias C 4 Primary transfer bias K 5 Secondary transfer bias 94 Chapter Solve problems ENWW

63 7 5 4 Circuit diagrams Figure -44 General circuit diagram ( of ) TO IPTU & SS TAG (Bk) TAG (C) TAG (M) TAG (Y) GND SCN_TH IPTUCMD IPTUSTS IPTUCLK +.V GND +.V GND GND +4V A +4V A +4V A +4V A GND JLPWRON GND CAN_L CAN_H GND +4V A OPT_EX Z VSS4 VIN VSS VIN VSS VIN VSS VIN ITBHPSNS SGND.VS PAPFULL SGND.VS FPRESS SGND.VS PREEXP +5VB PREEXP +5VB PREEXP +5VB PREEXP4 +5VB TH4 SR7 J46 LED8 LED7 LED6 LED5 J8L J8DH J8D J85DH SR9 J9 SR6 J47 J60L J8L J8DH J85D J60D J60DH J8D Laser Scanner Unit (Y/M) M9 M8 Laser Scanner Unit (C/Bk) SR J50 J50 M M J40 J4 J4 J7L J7LH 4 J0 J7L J7LH 4 J7D 4 J7D J87D J87L J87LH /BD LDPDOUT /VDOO 4 VDOO 0 5 LDCTRL 9 6 LDCTRL 8 7 LDCTRL0 7 8 /VDOO 6 9 VDOO 5 0 5VC 4 SGND L_LOW_PWR LDPDOUT 4 SGND 0 5 /VDO 9 6 VDO 8 7 LDCTRL 7 8 LDCTRL 6 9 LDCTRL0 5 0 /VDO 4 VDO SGND 5VC 4VA /SCNACC /SCNDEC PGND 4VA /SCNACC /SCNDEC PGND.VS SGND DEVHP /BD4 LDPDOUT /VDO 4 VDO 0 5 LDCTRL 9 6 LDCTRL 8 7 LDCTRL0 7 8 /VDO 6 9 VDO 5 0 5VC 4 SGND L_LOW_PWR LD4PDOUT 4 SGND 0 5 /VDO4 9 6 VDO4 8 7 LD4CTRL 7 8 LD4CTRL 6 9 LD4CTRL0 5 0 /VDO4 4 VDO4 SGND 5VC FANPWM FANLK PGND FM J J5 J0 J J6 J4 J 9 J06 M0 M M M 4 4 SGND 4VB PGND 5VB PGND 4VB /HVRESET 0 HVDALD 0 9 HVDACLK 9 8 HVDATA 8 7 TRS 7 6 TRS 6 5 TR4S 5 4 TRS 4 HVTCLK TRS TRCNT 0 /TRNCNT 0 9 DUPMPHB 9 8 DUPMI0B 8 7 DUPMIB 7 6 DUPMIDWN 6 5 DUPMIA 5 4 DUPMI0A 4 DUPMPHA DUPSL TRCLK DEVMOUTB DEVMOUT0A DEVMOUTA DEVMOUT0B J8 FEEDMOUT0A FEEDMOUTA FEEDMOUTB FEEDMOUT0B J7 FAN5LK DEVMPHB DEVMI0B 4 FANLK 4 5 DEVMI0A 5 6 FANPWM 6 7 DEVMPHA 7 8 RTS4SNS 8 9 FEEDMPHB 9 0 RTSSNS 0 FEEDMI0B RTSSNS FEEDMIB 4 RTSSNS 4 5 FEEDMIDWN5 6 WTSSNS 6 7 FEEDMIA 7 8 TONLED 8 9 FEEDMI0A 9 0 /DEV4CNT 0 FEEDMPHA /DEVCNT /HVRESET 4 /DEVCNT 4 5 HVDALD 5 6 /DEVCNT 6 7 HVDACLK 7 8 HVTCLK 8 9 HVTDATA J0 J6 J60 9 J00 J J0 HVT-T J5 J64 HVT-D J J6 DUP_SL +4VB DUPM_/B DUPM_B DUPM_/A DUPM_A GND FAN5LK +4V GND FANLK +4V WTSLED +5V WTSSNS +5V RT_S GND +5V RT_S GND +5V RT_S GND +5V RT4_S GND J79D J65DH J65D J68DH J68D J69DH J69D DC Controller PCA J79H J9 J79L J66DH J66D J66L J68L J65L J69L JD JDH M JD JDH J4D J4DH SL FM4 JD JDH SL M FM JL JL J4L SR5 JL PSNS_PCB SR4 TCU FULL SNS SR SW4 M7 TONER EMP ENV-SNS M RD-SNS RD-SNS J55DA J4 J6 J55D 4 A4 B5 4 J58L J58LH SL4 SL J50 J5 J55DB J8 J57LH J57L J57D J56L J58D 5 4 J56D 4 J67L J59L 4 SW J59H J59D J8L J56DH J67DH J67D J8D J8DH J4 CSTSIZE0 CSTSIZE CSTSIZE ICSCK SGND ICSDA.V CSTSL 4VA 4VA PGND PGND 4VB 4VB PGND PGND SGND SGND 4VB SGND +4VB LUON PGND +4VA SGND.V INPOPTMG INPOPCLK INPOPIN INPOPOT 5VB.VS CSTPEND CSTPS CSTPS RDSRGAIN0 RDSRGAIN RDSRLED DSRSR DSRDR +5VB SGND SGND +5VB DSFDR DSFSR RDSFLED RDSFGAIN RDSFGAIN0 SGND RDOORSNS J J J J0 J47 ENWW Tools for troubleshooting 95

64 SOLD0 SOLD Figure -45 General circuit diagram ( of ) Control Panel J99 FP5V SGND /FPCS FPCLK FPI FP0 FP.V SGND J0 Inter Connect Board J0 J04 PGND +V Power SW SW J J J J7 J55 CT J J45 J48 0 SW5 FDOORSNS SGND J9 FSMFR /FSMFG /FSMDEC /FSMACC PGND PGND +4VB +4VB J78D J78DH PREEXP +5VB PREEXP +5VB PREEXP +5VB PREEXP4 +5VB ITBLKSNS SGND.VS POUTSNS SGND.VS WTMSNS +4VB PGND FANLK FANPWM J77DH J77D NPCLK SGND NPSD_RD NPSD_OUT 5VA /NPRST NPSTART NPSL_DATA NPSL_EN NPLED J64DH J64D PGND CHK4V RMCL 4VB TOPI SGND.VS.V NPTRLED REFEEDS SGND.VS J74D J74DH J75DH J75D MPTPEND SGND.VS MPTSL 4VB J6D J6DH J5D J5DH SW FT VC J M J78L 5VB J5 J6L J5D J5DH J75L M J48 SR5 J6L CT- J6DH J6D CT- J77L J74L J5L SGND ENGON /VDOEN CLEI CLEO SGND VDO /VDO VDO /VDO VDO4 /VDO4 VDO4 /VDO4 VDOI /VDOI VDOI /VDOI VD0 /VD0 VD0 /VD0 SGND /VCRST /TOPO SGND /BD4O /BDO SL 5 5 LED SR0 J44 M J7 SL 4 4 J M LED 4 LED LED J5L SR8 SR J8 SR J9 SR J SR4 J MEDIA-SNS CL SR J FM Registration Unit (Duplex model) SR0 J J0 CL NPLED SL 0 0 SL M4 M J74LS 9 9 J54L M6 M M M M M M 7 7 J54D J94L J94LH J94D J9L J9LH J9D J9L J9LH J9D M J54DH VB TRSL.VS SGND DRMHP.VS SGND DRMHP.VS SGND DRMHP.VS SGND DRMHP4 +4VB PGND /BMACC /BMDEC /BMFG J4 J7 +4VA +4VA PGND PGND DRMFR /DRMACC /DRMDEC /DRMFG +4VA +4VA PGND PGND DRMFR /DRMACC /DRMDEC /DRMFG J8 J5 +4VA +4VA PGND PGND DRMKFR /DRM4ACC /DRM4DEC /DRM4FG +4VA +4VA PGND PGND DRMFR /DRMACC /DRMDEC /DRMFG J6 N.C. SR0 JS NPLED J0S J77LS J J J J J7S J5 J50 J6 J0 J0 J6 J MEDIA-SNS SW FT TCK P8 P80 MD MD0 IOTT SGND IOTR +.V PGND +4VA.VS 6 FSRSNS 7 SGND FSRTH SGND FSRTH 0 PGND PGND +4VB +4VA SGND FSRTH FSLP FSLP 4 SGND 5 /FSRNEW 5 Registration Unit (Simplex model) VB 5VB 4RMT ZEROX FSRD SGND /RLD FSRSAFE FSRSAFE 4VB /BDO /BDO CAN_H CAN_L JLPWRON SGND AWAKE J6F J6M 4 PWRSWON.VF.VF SGND SGND PFCRMT FSR_CURRMS INL_CURRMS /FSRMSTOP CHK4V PWROF SW_LED SGND PSTYP00 J50DB J50DA J50D 4 B7 A5 +4VA J5F B7 A J J50L J607 J50LA TB406 TB405 TB404 TB40 TB40 TB40 ACH N.C. HEATERC J5M J50LB TB0 TB0 7 HEATER TB50 TB50 ACL 00V IL0 L J604 N 6 PWRON H TB TP TB TP J50 TH J5DH J5 PWRSWON LED_ON L GND +V 5 4 J60 Power Supply Unit J5 TH 00V IL0 FU J5L J5D J J J0 N J604A TH SR4 SR5 D C B A 96 Chapter Solve problems ENWW

65 Figure -46 Paper feeder circuit diagram ( X 500-sheet) D C B SR SR SR SL SR4 SL DCC I/F J0LB J0LA B5 A4 J8L J0L J8LH A J JL JLH JL 4 5 JLH JD JD 5 4 J8D CMD STS CLK HRD_TMG +.V GND +4V GND T_PICK_SL +4V T_PATHS GND +.U T_PLVL_A T_PLVL_P T_PSNS GND +.U J40 J T_SIZE T_SIZE GND J407 T_SIZE 4 4 SW 4 T_LIFT_MTR J7D J7L J6 +4V J7LH x500 PD Controller PCA J5DH J40 M M 4 J409 J5D AOUT AOUT BOUT BOUT J5L J4 4 M M ENWW Tools for troubleshooting 97

66 Figure -47 Paper feeder circuit diagram ( X 500-sheet) D C B A SR SR SR SR4 SL DCC I/F SL J0LB J0LA J B5 A4 4 J0L 4 J8L JLH J8LH JL JL J8D JD JLH 5 4 JD GND +4V GND +.V HRD_TMG CLK STS CMD GND T_PATHS +4V T_PICK_SL GND T_PSNS T_PLVL_P T_PLVL_A J7LH J7L +.U +.U J7D J40 J408 4 SW J407 4 T_SIZE T_SIZE GND T_SIZE T_LIFT_MTR +4V J6 J50DH M M J5D J5L 4 J409 AOUT AOUT BOUT BOUT M M 4 J4 J9 DOPEN J404 +.V SW J0LH x500 PD Controller PCA SL SL J0D J0L T4_PICK_SL 0 +4V JLH 9 T4_PATHS 8 GND J406 +.U SR7 T4_PLVL_A T4_PLVL_P T4_PSNS GND JD JL J JLH +.U SR6 J SR8 JD JL SR5 J5LH J J405 T4_SIZE T4_SIZE GND T4_SIZE T4_LIFT_MTR +4V SW J5D J5L J6 J V T5_LIFT_MTR T5_SIZE GND T5_SIZE T5_SIZE +.U GND T5_PSNS T5_PLVL_P T5_PLVL_A +.U GND T5_PATHS +4V T5_PICK_SL M M J4D J4L J4DH J4D JD 4 J5D J0D J4DH JD JLH J5L 4 J4L JLH JL J0LH J5LH JL J0L M J SR0 J6 M4 SL SR SR9 SR SL SW4 98 Chapter Solve problems ENWW

67 HP Easy Printer Care Open the HP Easy Printer Care software Use one of the following methods to open the HP Easy Printer Care software: On the Start menu, select Programs, select Hewlett-Packard, select HP Easy Printer Care, and then click Start HP Easy Printer Care. In the Windows system tray (in the lower-right corner of the desktop), double-click the HP Easy Printer Care icon. Double-click the desktop icon. HP Easy Printer Care software sections HP Easy Printer Care software can provide information about multiple HP products that are on your network as well as any products that are directly connected to your computer. Some of the items that are in the following table might not be available for every product. The Help button (?) in the upper-right corner of each page provides more detailed information about the options on that page. Section Device List tab When you open the software, this is the first page that appears. NOTE: To return to this page from any tab, click My HP Printers in the left side of the window. Compatible Printers Find Other Printers window Add more products to the My HP Printers list Overview tab Contains basic status information for the product Options Devices list: Shows the products that you can select. NOTE: The product information appears either in list form or as icons, depending on the setting for the View as option. The information on this tab includes current alerts for the product. If you click a product in the list, the HP Easy Printer Care opens the Overview tab for that product. Provides a list of all the HP products that support HP Easy Printer Care software. Click the Find Other Printers link in the Devices list to open the Find Other Printers window. The Find Other Printers window provides a utility that detects other network printers so that you can add them to the My HP Printers list and then monitor those products from your computer. Device Status section: This section shows product-identification information and the product status. It indicates product-alert conditions, such as when a print cartridge has reached is estimated end of life. After you correct a problem with the product, click the refresh button in the upper-right corner of the window to update the status. Supplies Status section: Shows detailed supplies status, such as the estimated life remaining in the print cartridge and the status of the paper that is loaded in each tray. Supplies Details link: Opens the supplies status page to view more detailed information about product supplies, ordering information, and recycling information. ENWW Tools for troubleshooting 99

68 Section Support tab Provides links to support information Options Device Status section: This section shows product-identification information and the product status. It indicates product-alert conditions, such as a print cartridge that is at its estimated end of life. After you correct a problem with the product, click the refresh button in the upper-right corner of the window to update the status. Device Management section: Provides links to information about HP Easy Printer Care, to advanced product settings, and to product usage reports. Troubleshooting and Help: Provides links to tools that you can use to resolve problems, to online product support information, and to online HP experts. Settings tab Configure product settings, adjust printquality settings, and find information about specific product features NOTE: This tab is not available for some products. About: Provides general information about this tab. General: Provides information about the product, such as the model number, serial number, and the settings for date and time, if they are available. Information Pages: Provides links to print the information pages that are available for the product. Capabilities: Provides information about product features, such as duplexing, the available memory, and the available printing personalities. Click Change to adjust the settings. Print Quality: Provides information about print-quality settings. Click Change to adjust the settings. Trays / Paper: Provides information about the trays and how they are configured. Click Change to adjust the settings. Restore Defaults: Provides a way to restore the product settings to the factory defaults. Click Restore to restore the settings to the defaults. HP Proactive Support NOTE: This item is available from the Overview and Support tabs. Supplies Ordering button Click the Supplies Ordering button on any tab to open the Supplies Ordering window, which provides access to online supplies ordering. NOTE: This item is available from the Overview and Support tabs. When enabled, HP Proactive Support routinely scans your printing system to identify potential problems. Click the more info link to configure how frequently the scans occur. This page also provides information about available updates for product software, firmware, and HP printer drivers. You can accept or decline each recommended update. Ordering list: Shows the supplies that you can order for each product. To order a certain item, click the Order check box for that item in the supplies list. You can sort the list by product, or by the supplies that need to be ordered the soonest. The list contains supplies information for every product that is in the My HP Printers list. Shop Online for Supplies button: Opens the HP SureSupply Web site in a new browser window. If you have checked the Order check box for any items, the information about those items can be transferred to the Web site, where you will receive information on options for purchasing your selected supplies. Print Shopping List button: Prints the information for the supplies that have the Order check box selected. 00 Chapter Solve problems ENWW

69 Section Alert Settings link NOTE: This item is available from the Overview and Support tabs. Options Click Alert Settings to open the Alert Settings window, in which you can configure alerts for each product. Alerting is on or off: Activates or deactivates the alerts feature. Printer Alerts: Select the option to receive alerts for critical errors only, or for any error. Job Alerts: For products that support it, you can receive alerts for specific print jobs. Color Access Control Use this feature to permit or restrict color printing. NOTE: This item is available only for HP color products that support Color Access Control. NOTE: This item is available from the Overview and Support tabs. ENWW Tools for troubleshooting 0

70 Internal print-quality test pages Print-quality-troubleshooting pages Use the built-in print-quality-troubleshooting pages to help diagnose and solve print-quality problems.. Press the Home button.. Press the down arrow to highlight DIAGNOSTICS, and then press the OK button.. Press the down arrow to highlight PQ TROUBLESHOOTING, and then press the OK button to print the pages. The product returns to the Ready state after printing the print-quality-troubleshooting pages. Follow the instructions on the pages that print out. Figure -48 Print-quality troubleshooting procedure hp color LaserJet CP 450 Printers Print Quality Troubleshooting Procedure 0 Chapter Solve problems ENWW

71 Figure -49 Yellow print-quality troubleshooting page Yellow Green Figure -50 Yellow comparison page Green Yellow Yellow cannot be easily seen unless combined with cyan, so half of each page is yellow and the other half is an amplified version of yellow problems (green half). Compare the yellow on page one with the corresponding green on page two for defects. You can also check the cyan page for defects. ENWW Tools for troubleshooting 0

72 Figure -5 Black print-quality troubleshooting page. Grids The grids are in inches and millimeters. They are label with letters and numbers so that defects can be described by position and by distance between repeats.. Color plane registration (CPR) bars After printing, the box with no extra color in each area on each page shows how far off the CPR of that color is. Each page has two process direction areas and three scan direction areas that are labeled x and y and. The page should be fed by the long edge. Each square from the center equals 4 microns.. Color ramp patches Used to detect offset for the OPC or developer in the image drum or offset in the fuser. NOTE: To get further assistance in print quality troubleshooting, go to cljcp405 or and select PQ Troubleshooting Tools. 04 Chapter Solve problems ENWW