PrintCopy.info service

Lexmark C780n

Error Codes List page 1

  • Code: 100.01
  • Description: ITU Error ITU belt track direction problem
  • Remedy: 1 Make sure all packing material is removed from the printer. The detensioner is located underneath the toner cartridges. Make sure the ITU detensioner is removed. Remove the detensioner by pulling up on the red handle on the right side of the ITU. Note: All the print cartridges must be removed to gain access to the detensioner packing material. Has all packing material been removed from the printer? Go to step 2 Remove any remaining packing material from the printer. 2 Check the ITU release lever for correct operation. The ITU release lever is the black lever located on the left upper side frame above the ITU opening and can be seen by opening and lowering the MPF assembly. When locked, the lever should be at the 6 o'clock position. When unlocked, it should be in a 3 o'clock position. Undue pressure is not required to operate the lever. Does the ITU release lever operate correctly? Go to step 3 Repair as necessary. 3 Check the second transfer roll installation. Is it installed correctly? Go to step 4 Reinstall the second transfer roll. 4 Check the display error log in the Diagnostic Menu. Is 100.01 ITU preceded in the log by a 100.02 ITU Error? Go to “100.02 ITU error service check”. Go to step 5 5 Remove the ITU assembly and check that the sensor cable is seated in the handle of the ITU assembly correctly. Note: The sensor connector is located on the side of the ITU handle assembly. Is the cable seated correctly? Go to step 6 Reinstall the cable correctly. Check again for a 100.01 ITU Error. If 100.01 ITU Error is displayed, go to step 6. 6 The front contamination shield is attached to the font plate of the ITU frame and lies on the top of the ITU belt. Is the front contamination shield lying on the belt? Go to step 7 Position the shield on top of the belt. 7 Make sure the ITU cleaner gear (A) is turning. Observe the gear by opening the front paper jam door above the integrated paper tray 1. Observe the white cleaner gear during POR. The gear should turn slowly and smoothly for approximately 8 seconds before the printer displays a 100.01 ITU error. Is the ITU Cleaner Gear turning? Go to step 11 Go to step 8 8 Check to see if the ITU drive roll gear (A) is turning during POR. Observe the gear by opening the MFP door to its horizontal position. Observe the gear on the left end of the ITU drive roll. The ITU drive roll gear should turn for a few seconds slowly and smoothly before the printer posts a 100.01 ITU error. Does the Gear turn? Go to step 10 Go to step 9 9 Check to see if the ITU drive motor is turning during POR. Observe the ITU motor during POR by removing the rear cover. Is the ITU drive motor turning? Replace the ITU drive assembly. see “ITU drive assembly removal”. Go to step 10 10 Check to see if the printer is setting on a solid, flat surface. Is the printer setting on a solid, flat surface? Go to step 11 Place the printer on a solid, flat surface. 11 Make sure the ITU drive motor assembly cable is correctly installed to the ITU drive motor and at connector location J16 on the system board. Is the cable correctly installed? Go to step 12 Install the cable correctly. 12 Make sure the ITU autoconnect cable is installed correctly at connector location J7 on the system board. Is the cable correctly installed? Go to step 13 Install the connector/cable correctly. 13 Make sure the ITU autoconnect connector in the printer is seated correctly in the connector plate. Is the connector seated correctly? Replace the following FRUs in the following order: 1. ITU assembly. See “ITU assembly removal”. 2. System board. See “System board removal”. Replace the ITU autoconnect cable.
  • Code: 100.02
  • Description: ITU Error ITU belt tracking problem
  • Remedy: 1 Make sure all packing material is removed from the printer. The Detensioner is located underneath the toner cartridges. Make sure the ITU Detensioner is removed. Remove the Detensioner by pulling up on the red handle on the right side of the ITU. Note: All the print cartridges must be removed to gain access to the Detensioner packing material. Has all packing material been removed from the printer? Go to step 2 Remove any remaining packing material from the printer. 2 Check the ITU release lever for correct operation. The ITU release lever is the black lever located on the left upper side frame above the ITU opening and can be seen by opening and lowering the MPF assembly. When locked, the lever should be at the 6 o'clock position. When unlocked, it should be in a 3 o'clock position. Undue pressure is not required to operate the lever. Does the ITU release lever operate correctly? Go to step 3 Repair as necessary. 3 Check the second transfer roll installation. Is it installed correctly? Go to step 4 Reinstall the second transfer roll. 4 Check the printer is setting on a solid, flat surface. Is the printer setting on a solid, flat surface? Go to step 5 Inform the customer that the printer must be setting on a solid, flat surface. 5 The front contamination shield is attached to the front plate of the ITU frame and lies on the top of the ITU belt. Is the front contamination shield lying on the ITU belt. Go to step 6 Position the shield on top of the belt. 6 Remove the ITU and check the ITU belt position. If the belt has shifted to the front or to the rear it should be replaced. The belt must not shift more than 4 mm in either direction. Check by making the measurements as shown. The lower limit is 3.1 mm, the high limit is 8.1 mm, and the optimum position is 5.6 mm. Has the ITU Belt shifted to the front or to the rear? Replace the ITU assembly. See “ITU assembly removal” and run the belt tracking. See “Belt Tracking (ITU 4th point adjustment)”. Treat as a belt stall or signal communications problem. See “100.01 ITU error service check”.
  • Code: 100.03...100.99
  • Description: ITU Error
  • Remedy: Replace the ITU assembly
  • Code: 106...109
  • Description: 106.xx Printhead Error Cyan printhead error. 107.xx Printhead Error Magenta printhead error 108.xx Printhead Error Yellow printhead error 109.xx Printhead Error Black printhead error
  • Remedy: If you get a printhead error, follow this diagnostic to find the specific failure. 1. Remove the top cover. See “Top cover assembly removal”. 2. Remove the outer system board shield. See “Outer system board shield removal”. 3. Verify that all the connectors are properly seated. Check the printhead cable connectors on the printheads as well as the printhead cable connectors and mirror motor cable connectors on the system board. If the printhead and mirror motor cables are properly seated and the error remains, record the error code. Continue to the next step. 4. Select which pair of printheads to switch based on the error code. • If the printer displays one of the codes that indicate yellow or cyan, switch the yellow with the cyan printhead cable and the yellow with the cyan mirror motor cable. • If the error code indicates a magenta or a black error, switch the magenta with the black printhead cable and the magenta with the black mirror motor cable. 5. Turn on the printer and compare the new error codes with the original error code you recorded. Note: If an automatic calibration begins, 36 Printer Service Required may appear. Check the printhead cable connections. Press to clear the error. • If the error code remains the same, replace the system board. See “System board removal”. If that solves the problem, you are finished. Make sure you return all the cables to the original positions. • If the printer displays a different printhead error code, which indicates the code for the other color of the pair you switched, the printhead or the printhead cables are defective. Return all the cables to the original positions. Replace the printhead cables. If the problem remains, replace the printhead. See “Printhead removal and adjustments”.
  • Code: 122.01
  • Description: Fuser Error. Hot fuser Error code 122.01 indicates that the fuser heated up too quickly or not quickly enough. Error code 122.01 may also indicate a problem in the fuser assembly with the hot roll bearings, hot roll thermistor, LVPS, or the system board.
  • Remedy: 1 Turn the printer on. Open the right side fuser access door. Observe the hot roll lamp to see if it turns on and off. You may have to observe the lamp for a few minutes to see if it turns on and off. Does the lamp turn on and off? Go to step 2 Replace the LVPS assembly. See “LVPS assembly removal”. 2 Turn the printer on. Measure the voltage on connector J17-11 on the system board. The voltage should measure approximately +0.13 V dc and +0.64 V dc as the hot roll lamp turns on and off. Is the voltage correct? Replace the fuser assembly. See “Fuser assembly removal”. Replace the system board. See “System board removal”.
  • Code: 122.02
  • Description: Fuser over temperature. Hot fuser Error code 122.02 displays whenever the printer detects a problem with the fuser running over temperature or the fuser lamps have been on too long. A problem could exist in the fuser assembly with the hot roll bearings, hot roll thermistor, or other hot roll parts. The LVPS or system board assembly can also be failing.
  • Remedy: 1 Open the right fuser access door. Observe the fuser, and see if the hot roll fuser lamp turns on and off. You may have to observe for a few minutes. Do the lamps turn off and on? Go to step 2 Replace the LVPS assembly. See “LVPS assembly removal”. 2 Turn the printer on, and measure the voltage on connector J17-11 on the system board. The voltage should measure approximately +0.13 V dc to +0.64 V dc as the hot roll lamp turns on and off. Is the voltage correct? Replace the fuser assembly. See “Fuser assembly removal”. Replace the system board. See “System board removal”.
  • Code: 122.03
  • Description: Fuser open thermistor. Hot roll thermistor circuit is open If error code 122.03 displays, the printer detects a problem in the fuser hot roll, fuser hot roll thermistor, system board, or LVPS fuser control circuits.
  • Remedy: 1 Turn the printer on, and allow it to reach the Ready prompt. Note: The printer may not complete POR and post a 122.03 Error message. Measure the voltage on connector J17-6 on the system board. The voltage should measure approximately +3.3 V dc. Is the voltage correct? Go to step 2 Replace the system board. See “System board removal”. 2 Measure the voltage on the fuser DC control connector on the LVPS. Measure the voltage on pin 6 of the connector. Does the voltage measure approximately +3.3 V dc? Replace the fuser assembly. See “Fuser assembly removal”. Replace the LVPS assembly. See “LVPS assembly removal”.
  • Code: 122.04
  • Description: Fuser cold.
  • Remedy: 1 Measure the voltage on connector J17-11 on the system board. The voltage should measure approximately +0.13 V dc to +0.64 V dc as the hot roll lamp turns off and on. Is the voltage correct? Go to step 2 Replace the system board. See “System board removal”. 2 Remove the fuser from the printer. Check continuity of the hot roll lamp by measuring between pins 1 and 2 on the AC fuser connector on the fuser assembly. Is there continuity? Go to step 4 Go to step 3 3 Check to make sure the hot roll lamp is installed correctly. Is the hot roll lamp installed correctly? Go to step 4 Install the lamp correctly. If this does not fix the problem, replace the fuser assembly. See “Fuser assembly removal”. 4 Reinstall the fuser assembly. Watch to see if the lamps turn on and off as the lamp heats up. Do the lamps turn on? Go to step 5 Replace the fuser assembly. See “Fuser assembly removal”. 5 Turn the printer on, and allow it to reach a Ready prompt. Note: The printer may not complete POR and may continue to display the error code. Remove the fuser from the printer. Measure the voltage on connector J17-6 on the system board. The voltage should measure approximately 3.3 V dc. Is the voltage correct? Go to step 6 Replace the system board. See “System board removal”. 6 Measure the voltage on the fuser DC control connector on the LVPS. Measure the voltage on pin 6 of the connect. Does the voltage measure approximately +3.3 V dc? Replace the fuser assembly. See “Fuser assembly removal”. Replace the LVPS assembly. See “LVPS assembly removal”.
Service manual
Error Code
Parts Catalog
Compatibility
Home
New Register Forgot Password?
Send message to us