Lexmark X940e Owners Manual
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Repair information4-259 7510 Go Back Previous Next 1X 500-sheet drawer (1TM)—tray module drive motor assembly removal 1. Remove the rear cover. See “1X 500-sheet drawer (1TM)—rear cover removal” on page 4-242. 2. Disconnect the connector from the tray module drive motor (A). 3. Remove the two screws securing the tray module drive motor (A) to the machine. 4. Remove the tray module drive motor (A). 1X 500-sheet drawer (1TM)—1TM controller card assembly removal 1. Remove the rear cover. See “1X 500-sheet drawer (1TM)—rear cover removal” on page 4-242. 2. Disconnect the seven connectors from the 1TM controller card assembly (A). 3. Remove the four screws securing the 1TM controller card assembly (A) to the machine. 4. Remove the 1TM controller card assembly (A). A
4-260Service Manual 7510 Go Back Previous Next Setup and adjustments Sensor (ATC) setup Step Check Yes No 1 Warning: Before installing any new developer unit assembles in the machine, record the bar code number located on the sensor (ATC) for all new developer units being installed. Example: Sensor (C ATC) XXX Sensor (M) ATC XXX Sensor (Y) ATC XXX Sensor (K) ATC XXX 2Using the bar code number recorded from the sensor (ATC) on each of the new developer unit assemblies in step 1, locate the values for the following settings using the ATC value conversion chart shown after step 5: Sensitivity gradient Sensor output reference 3Warning: The following step must be performed or the new machine settings will not match the settings listed on the birth certificate in the event it is required for NVM value replacement. Retrieve the birth certificate from the compartment in the media tray 1, record the eight new sensitivity gradient and sensor output reference settings from step 2 to the birth certificate. 033
Repair information4-261 7510 Go Back Previous Next 4Update the following settings using the newly converted values from step 2 for all newly installed developer units: Sensitivity gradient Sensor output reference 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch ATC Sensor Adjust Values 4. Enter new values. 5. Touch Submit. Warning: This procedure must be done for all new developer unit assemblies being installed or print quality problems may occur. 5Note: Ensure that all photoconductor unit assemblies are installed before performing this step. Finalize the newly updated settings. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch ATC Sensor Adjust Cycles Does the above test pass?The sensor (ATC) setup is now complete.Ensure that the photoconductor unit assemblies are installed before performing this test. ATC VALUE CONVERSION CHART Bar code number (last 2 digits)Sensitivity gradient default valueStandard TC output default value 00 526 169 01 572 166 02 617 162 03 663 158 04 708 154 05 753 150 06 799 146 07 844 142 08 889 138 09 934 134 10 526 171 11 572 168 12 617 164 13 663 160 Step Check Yes No
4-262Service Manual 7510 Go Back Previous Next 14 708 156 15 753 152 16 799 148 17 844 144 18 889 140 19 934 136 20 527 174 21 572 169 22 617 166 23 663 162 24 708 158 25 753 154 26 799 150 27 844 146 28 889 142 29 934 138 30 527 176 31 572 172 32 617 168 33 663 164 34 708 160 35 753 156 36 799 152 37 844 148 38 889 144 39 934 140 40 527 178 41 572 174 42 617 170 43 663 166 44 708 162 ATC VALUE CONVERSION CHART Bar code number (last 2 digits)Sensitivity gradient default valueStandard TC output default value
Repair information4-263 7510 Go Back Previous Next 45 753 158 46 799 154 47 844 150 48 889 146 49 934 142 50 526 179 51 572 176 52 617 172 53 663 168 54 708 164 55 753 160 56 799 156 57 844 152 58 889 148 59 934 144 60 526 181 61 572 178 62 617 174 63 663 170 64 708 166 65 753 162 66 799 158 67 844 154 68 889 150 69 934 146 70 526 183 71 572 180 72 617 176 73 663 172 74 708 168 75 753 164 ATC VALUE CONVERSION CHART Bar code number (last 2 digits)Sensitivity gradient default valueStandard TC output default value
4-264Service Manual 7510 Go Back Previous Next 76 799 160 77 844 156 78 889 152 79 934 148 80 526 185 81 572 182 82 617 178 83 663 174 84 708 170 85 753 166 86 799 162 87 844 158 88 889 154 89 934 150 90 526 187 91 572 184 92 617 180 93 663 176 94 708 172 95 753 168 96 799 164 97 844 160 98 889 156 99 934 152 ATC VALUE CONVERSION CHART Bar code number (last 2 digits)Sensitivity gradient default valueStandard TC output default value
Repair information4-265 7510 Go Back Previous Next Color registration (RegCon) Measurement cycle test Step Check Yes No 1 Perform the Measurement cycle test. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch RegCon adjust 4. Touch Measurement cycle Does the above test pass?Perform the “Control sensor check”. See “Control sensor check” on page 4-266. Go to step 2. 2Check the transfer belt unit assembly for damage. Does above component show signs of damage on the frame or on the belt?Replace the transfer belt unit assembly. See “Transfer belt unit assembly removal” on page 4-16.Go to step 3. 3Check the image density sensor assembly connection. Is the above component properly connected?Replace the image density sensor assembly. See “Image density sensor assembly removal” on page 4-55.Replace the connection. 4Re-perform the Measurement cycle test again. Does the above test pass?Perform the “Control sensor check”. Go to“Control sensor check” on page 4-266.Contact next level of support.
4-266Service Manual 7510 Go Back Previous Next Control sensor check Control sensor cycle Step Check Yes No 1Perform the Control sensor check test. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch RegCon adjust 4. Touch Control Sensor Check Does the above test pass?Perform the “Control sensor cycle”. See “Control sensor cycle” on page 4-266.Go to step 2. 2Check the transfer belt unit assembly for damage. Does above component show signs of damage on the frame or on the belt?Replace the transfer belt unit assembly. See “Transfer belt unit assembly removal” on page 4-16.Go to step 3. 3Re-perform the Control sensor check test again. Does the above test pass?Perform the “Control sensor cycle”. See “Control sensor cycle” on page 4-266.Contact next level of support. Step Check Yes No 1Perform the Control sensor cycle test. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch RegCon adjust 4. Touch Control Sensor Cycle Does the above test pass?Perform the “Belt edge learn test”. See “Belt edge learn test” on page 4-267.Go to step 2. 2Check the upper printer engine card assembly connections. Is the above component properly connected?Replace the upper printer engine card assembly. See “Upper printer engine card assembly removal” on page 4-88.Replace the connection. 3Re-perform the Measurement cycle test again. Does the above test pass?Perform the “Belt edge learn test”. See “Belt edge learn test” on page 4-267.Contact next level of support.
Repair information4-267 7510 Go Back Previous Next Belt edge learn test Skew fine setup Step Check Yes No 1Perform the Belt edge learn test. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch RegCon adjust 4. Touch Belt edge learn Does the above test pass?Perform “Skew setup”. See “Skew fine setup” on page 4-267.Go to step 2. 2Replace the transfer belt unit assembly. See “Transfer belt unit assembly removal” on page 4-16. Does the error continue?Perform “Skew setup”. See “Skew fine setup” on page 4-267.Contact next level of support. Step Check Yes No 1Perform the Skew fine setup. 1. Enter the Diagnostics Menu. 2. Touch ENGINE ADJUST. 3. Touch RegCon adjust 4. Touch Control setup cycles 5. Touch Skew fine setup Does the above test pass?Go to step 2. Go to step 3.
4-268Service Manual 7510 Go Back Previous Next 2Perform the Skew fine setup printhead adjustment. Tou ch Cycle result values. Locate the following new values for the following settings: Y- Skew adjustment M- Skew adjustment C- Skew adjustment K- Skew adjustment Turn the appropriate printhead adjustment screws located behind the waste toner cartridge the number of clicks (rotation until a snap sound is heard and felt) based on the above settings. +values require turning the screw Clockwise - values require turning the screw Counter Clockwise. EG: Y-Skew adjustment 10. Turn the screw CW 10 clicks. EG: Y-Skew adjustment -10. Turn the screw CCW 10 clicks. Have the appropriate printhead adjustment screws been adjusted?Perform the In/Out setup. See “In/out setup” on page 4-272.Adjust the printhead adjustment screws then perform the In/Out setup. See “In/out setup” on page 4-272. Step Check Yes No K C M Y Printhead adjusting screw