Printbar Replacement Guide

CN598-67045%/   KWWSZZZKSFRPVXSSRUW   www.hp.com/support 1 IMPORTANT: Ensure the product firmware is upgraded to at least version 1336MR before performing this repair procedure. If the firmware upgrade cannot be completed, contact HP support. NOTE: If the product has printed more than 30,000 pages, replacing the service sled assembly is recommended. This only applies if the printbar is being replaced. These instructions are intended for technicians with a good understanding of HP OfficeJet Pro X series repair. Remove the scanner assembly (X476 and X576 models) and all doors/covers. 2 Before replacing the printbar: • Replace the duplex module. The duplex module must be replaced any time the printbar is replaced. • A set of trade supplies will be required to test that the printbar has been installed correctly. The existing customer supplies will be sufficient as long as they have ink left. IMPORTANT: The HP OfficeJet Pro X special tools kit (part CN598-67056) is required when replacing a printbar. If you are working on the product at a repair center, use the special alignment tool (PN T-285463) to make sure the sled is aligned correctly. In the field, you will have to align it by sight. On the front of the product, locate the printbar lock mount. 1 5 6 Mount the service sled advance tool on the drive shaft. CAUTION: Do not use excessive force when installing the printbar lift lock tool. Turn the tool clockwise to fully advance the service sled forward. 2 . The printbar may not move when the tool is installed. the printbar might be damaged. Locate the service sled cartridge drive shaft (callout 1). and likely will need to be replaced. part of the base material may need to be removed to mount the service sled advance tool on the drive shaft. CAUTION: The printbar lift lock tool must remain in place until either the printbar is removed. or the service sled assembly is reinstalled in the product. NOTE: On older products. rotate the tool counter-clockwise. If the printbar drops to the bottom of the product.3 4  Insert the printbar lift lock tool into the printbar lock mount. NOTE: The printbar lift lock tool may look different than what is shown here. Remove two screws (callout 1) from the front of the product. any contaminants from your hands that transfer to the roller could affect print quality. The roller is saturated with ink. 9 10  Remove two screws (callout 1) from the rear of the product. Rotate the web advance rack assembly upward to clear the tab from the right wall. Remove the right cross brace.7 8  Lift the service sled cartridge from the product. 3 . and then remove the web advance rack assembly. Also. 11 12  Remove one screw (callout 1) from behind the flag. NOTE: Do not touch the web contact roller during the removal process. 16  Place the dolly (callout 1) on the guides. and then lower the printbar by hand onto the seated dolly. You may now remove the printbar lock tool. X476/X576 models only: Remove nine screws (callout 1) from the top cap. and then unthread the cable (callout 2) from the product frame.13 14 2  1 Install the printbar safety cap on the printbar to protect the ink nozzles. This will prevent the printbar from inadvertently dropping onto the dolly. Locate the service sled guides (callout 1). then rotate the printbar safety cap back and up to engage the catches on the back of the printbar (callout 2). 4 . Push the dolly into the product until it reaches the left side. 17 18    X476/X576 models only: Disconnect the eject flap opto flex cable connection (callout 1). 15 Install the printbar dolly. Install the two front rubber bumpers (callout 1) into the matching notches in the printbar. REINSTALLATION TIP: When reinstalling. (The black flex cable goes through a slot in the plastic holder. REINSTALLATION TIP: Manually clasp the cables to make sure that the ZIF sockets are closed on the cables correctly. 5 . replace the damaged cable. If any damage exists.19 20   X476/X576 models only: Lift the top cap assembly up to remove it from the product. remember to thread the two white flex cables through the ferrites correctly. X451/X551 models only: Remove five screws (callout 1).) Doing so ensures that the product meets regulatory standards. inspect the printbar flex cables for damage. REINSTALLATION TIP: When reinstalling. Disconnect three printbar flex cables (callout 1). 21 22   Unthread the three flex cables through the ferrite holder (callout 1). and then remove the brace (callout 2). front guide back into the front of the product. the top of the lift guide rods will stand above the top of the case. If you are installing a new Z-stop. For example. it must be replaced (part CN598-67048). 25 26  Locate both lift guides (callout 1) on the top left of the product. REINSTALLATION TIP: Lift guide rods must be replaced in the same position. Take care to avoid damaging the cable. If the printbar lift rod Z stop is broken. CAUTION: The lift guides are greasy.23 24  Carefully use a screwdriver to remove the flex cable retainer (callout 1) from the product. 6 . Unthread all three of the printbar cables through the front frame of the product. Installing the top cap assembly will cause the Z stop to crush down to the correct height. Pull each lift guide up to remove. check the shims for a significant buildup of ink/dust.27 28   Slide the dolly (callout 1) forward. CAUTION: Use extreme care when handling the printbar while it is out of the product. If the service sled is not easy to turn. Slide the printbar dolly with new printbar gently into position and ensure it is fully seated. the shims can be cleaned very carefully with a lint free wipe. the printbar guide may be misaligned by a tooth. Reinstall the printbar. this indicates that the service sled transmission is in the correct position. REINSTALLATION TIP: Remove the printbar safety cap before reinstalling the service sled. to remove the printbar assembly (callout 2). REINSTALLATION TIP: Install the orange printbar safety cap onto the new printbar before mounting it onto the printbar dolly. Before reinstalling the printbar. If a larger gap is evident. 7 Remove the printbar dolly and verify that the service sled drive is not easy to turn. There should not be more than a 1. away from the product.5 mm gap between where the printbar guide meets the lift rod Z stop on the front and rear guide rods. 31 32 Reinstall the printbar lock. Turn the lock to lift the printbar to its top-most position. It can be easily damaged. Lower the printbar back onto the dolly and see step 10 of Remove the printbar to remove and reinstall the lift guide rods. If there is a significant build up. . Insert the front and rear lift guide rods and ensure they are fully seated in their pockets. X476/X576 models only: Reinstall the top cap assembly. 30 29 X451/X551 models only: Reinstall the top brace. If the operation is not smooth. and then unplug the product. Temporarily connect the front panel into the main PCA. and then disappears. 8 . 6. REINSTALLATION TIP: During the service sled assembly reinstallation process. NOTE: Use trade ink supplies while in MFG (on) mode. and that once it caps the printbar. new duplex module. 7. Also check that the service sled transmission is in the correct position. The service sled module should move out of. c. 2. Continue to hold the power button for five seconds after the logo disappears. Press the power button to enter MFG (on) mode. After a new screen appears.33 Reinstall the web advance rack assembly. Print a Printer Status Report page. Touch the Back button. 5. Host supplies will be rejected in MFG (on) mode. X476/X551/X576 1. Cover the Ink Supply Door (IDS) with a magnet. Press the power button to enter MFG (on) mode. check for correct installation. Touch the Home button twice. Ensure that the service sled is aligned with the arrows. Observe that the service sled moves smoothly. Perform a 21 tap test. WARNING: Follow the instructions for placing the product into MFG (manufacturing) mode exactly as listed above. Touch the Home button. ensure that the service sled is aligned with the case part. Temporarily install the left door. Temporarily install the right cover. 37 Place the printer into MFG (on) mode. Set the locator bumps on the bar in the locator holes on the product Test the printbar installation after installing a printbar. 35 Reinstall the service sled assembly. Place the product into MFG (manufacturing) mode--X451/X551 REINSTALLATION TIP: The front and rear ends of the right cross brace are labeled. IMPORTANT: A new duplex module must be installed before calibration/initialization. Temporarily install the ADF/Scanner assembly (OJP X476/X576 only). 36 Test the printbar 38 Verify that the new printbar is functional: a. that the cap is level and aligned correctly. Turn the product off using the power button. The HP logo appears on the product control panel. 4. Press and hold the power button while plugging in the product. 3. b. and back into the cap smoothly. including whether the service sled is aligned correctly. 2. Release the power button. X451 1. Failure to follow these instructions while placing the product into MFG (manufacturing) mode can render the product inoperable. 34 Reinstall the right cross brace. Press and hold the ATM1 and ATM2 buttons while plugging in the product. and Tray 2. touch the Home button again to enter MFG (off) mode. 5. 2. and then touch the OK button. Touch the Back button. select Replace Printbar. Touch the Home button twice to enter the Engineering menu. 7. Press the power button to enter MFG (on) mode. the control panel will return to the Home screen. Touch the Home button twice. and then install the HP Setup supplies that came with the printbar replacement kit. Touch the Home button. NOTE: An initialization screen will be displayed on the product control panel while the printbar purges the shipping fluid. Select the Service Menu. and then place the product into MFG (on) mode. Touch the Back button. 9 . Press the Cancel button twice. remove the trade supplies. 6. Press the Back button. X451 1. When the calibrations are complete. the product begins calibrating. X476/X551/X576 1. Press and hold the ATM1 and ATM2 buttons while plugging in the product. select Service ink container Or Duplex module. Continue to hold the power button for five seconds after the logo disappears. X451 1.39 40 Complete the assembly of the printer. and then disappears. NOTE: After the printbar purges the shipping fluid. and then touch the OK button. scroll to System Configuration. After the product restarts. 41 42 Open the Engineering menu. touch the Home button again to enter MFG (off) mode. Failure to follow these instructions while placing the product into MFG (manufacturing) mode can render the product inoperable. including all covers. WARNING: Follow the instructions for placing the product into MFG (manufacturing) mode exactly as listed above. 3. 3. select Replace Duplex Module. 2. 2. scroll to System Configuration. Press the power button to enter MFG (on) mode. Calibrate the printbar Place the product into MFG (off) mode. The calibrations will take approximately 20 to 25 minutes and a total of nine pages will print. 3. Release the power button. 4. The HP logo appears on the product control panel. Press the Cancel button. After a new screen appears. X476/X551/X576 1. 43 44 From the Service Menu. Press and hold the power button while plugging in the product. Touch the Home button. 2. Column 8 DSID_PRINTHEAD_CAL_NEEDED A value of 0 indicates that OOBE calibrations (not IQ calibrations) are complete. For example. NOTE: Use the power button to turn the product off and on. Use the arrow key to find the Print-mech tap tests. Column 6 DSID_BDD_FAIL_MASK 0–internal use only. then follow the Print Quality Checklist in the Troubleshooting Guide. If the power button does not work. 4. Press the Cancel button twice. Column 7 DSID_IDS_FIRST_CHARGE_REQUIRED 0–internal use only. 49 Run the following tap tests: • 10 tap • 12 tap • 61 tap • 909 tap Interpret 10 tap test results (OOBE states) 1.45 46 Turn off the product. 2. A value of 0 means the OOBE printed calibration does not exist so no printing/ calibration for OOBE is attempted. 47 48 Open the Engineering menu. and that BDD is scheduled (or pending) to perform normally. 3. Press the Back button. Column 2 DSID_OOBE_STATE 255–OOBE messaging complete. if this value is 0. This is the expected state for a printer after initialization. If there are problems. you will get the printed OOBE calibrations. X476/X551/X576 1. 1. Use the arrow key to find the tap test to run. Column 4 DSID_CAL_OOBE_STATE A value of 2 means that the OOBE printed calibrations are complete. Press the Cancel button. "Startup Complete. Column 3 DSID_INK_SUPPLY_OOBE_COMPLETE 1–SHF purge is complete and service wipes have been enabled. 2. Use the arrow key to find the Reports Menu. 3. A value of 1 means the OOBE printed calibrations are in progress. Use the following table and figure to interpret these numbers. but the CAL_OOBE_STATE=1. 10 . X451 1. This is so the messaging is complete for the calibrations. This means that shipping fluid has been removed from the printbar and replaced with ink. 2. Print a print quality report. and then turn the product on. but the control panel may display Preparing instead of Calibrating. Touch the Back button. 3." of the printed report. Touch Manufacturing Menu. Touch the Home button twice to enter the Engineering menu. 2. and then touch the OK button. Column 5 DSID_IQ_LIST_INDEX A value of 1 means that pen height and beam center have been completed. Touch the Home button. The printed tap test results contain a sequence of numbers at line number 68. The product will boot in user (standard) mode. see the Troubleshooting guide. and then touch the OK button. Column Code Acceptable values Column 1 DSID_PEN_PRINTER_STARTUP_BITS A value of 1 indicates that the printbar has been started up. 6WDUWXSFRPSOHWH 11 . p value 1 Between 10 and 100 5 Print REDI Sensor Calibration Data TOF sensor.6HQVRU&DOLEUDWLRQ'DWD 72)VHQVRUSYDOXH 72)VHQVRUPYDOXH      12 .50 Interpret 12 tap test results (REDI sensor values) Callout Report area Item Acceptable values 1 Print Humidity Sensor Data Stable Relative Humidity 0–100 RH 2 Pen TSR Ambient Temperature Estimate Pen TSR Ambient Temperature x10 °C ± 10 °C of current ambient temperature 3 Digital Temperature Sensor Ambient Temperature Digital Temperature Sensor Ambient Temperature x10 °C ± 10 °C of current ambient temperature 4 Print REDI Sensor Calibration Data TOF sensor. m value 1 Between 25 and 380  6WDEOH5HODWLYH+XPLGLW\     3ULQW765$PELHQW7HPSHUDWXUH(VWLPDWH 3HQ765$PELHQW7HPSHUDWXUH[& 'LJLWDO7HPSHUDWXUH6HQVRU$PELHQW7HPSHUDWXUH 'LJLWDO7HPSHUDWXUH6HQVRU$PELHQW7HPSHUDWXUH[& 3ULQW5('. “Color scale (factory)” (callout 1) and “Color scale (current)” will be identical after a main PCA replacement. An acceptable 61 tap test has identical values for the parameters in the “Color scale (factory)” (callout 1) and “Color scale (current)” (callout 2) on the printed report areas. or 100. The values should also be identical after a printbar replacement.    &RORUVFDOHIDFWRU\. the tap count will start incrementing by 10. but may not be the same under other conditions.51 Interpret 61 tap test results (Align and color calibrations) NOTE: If you press and hold the up or down arrows.  GLD .[HHF[IF[[[[[IFI[E[FHD[G &[G[IER[[E[F[D[IF[HG[GHD[IH 0[G[IER[[E[F[D[IF[HG[GHD[IH <[G[IER[[E[F[D[IF[HG[GHD[IH  &RORUVFDOHIDFWRU\. [HHF[IF[[[[[IFI[E[FHD[G &[G[IER[[E[F[D[IF[HG[GHD[IH 0[G[IER[[E[F[D[IF[HG[GHD[IH <[G[IER[[E[F[D[IF[HG[GHD[IH &RORUVFDOHIDFWRU\. GLD . [HHF[IF[[[[[IFI[E[FHD[G &[G[IER[[E[F[D[IF[HG[GHD[IH 0[G[IER[[E[F[D[IF[HG[GHD[IH <[G[IER[[E[F[D[IF[HG[GHD[IH &RORUVFDOHIDFWRU\. GLD           .  GLD           .[HHF[IF[[[[[IFI[E[FHD[G &[G[IER[[E[F[D[IF[HG[GHD[IH 0[G[IER[[E[F[D[IF[HG[GHD[IH <[G[IER[[E[F[D[IF[HG[GHD[IH 13 . An acceptable 909 tap test has the following values: • BDD is operating (callout 1) • Cal OOBE is complete state=2 (callout 2) • Cal IQ is in pending.52 Interpret 909 tap test results (BDD status) NOTE: If you press and hold the up or down arrows. the tap count will start incrementing by 10. or 100. index=1 (callout 3)     %''LVRSHUDWLQJ  &DO22%%LVFRPSOHWHVWDWH   &DO.4LVSHQGLQJLQGH[  14 . 15 . com *CN598-90009* *CN598-90009* &1 Rev C 16 .© 2014 Hewlett-Packard Development Company. L.P. www.hp.