Troubleshooting Guide
Page 1
...available on . You are using a USB device For information regarding tested and approved USB flash memory devices, see our Lexmark Web site at www.lexmark.com. Held jobs do not print The printer is not securely connected Make sure you have properly configured the printer .... • Free up additional printer memory by any switch or breaker. • The printer is not plugged into any surge protectors, uninterrupted power supplies, or extension cords. • Other electrical equipment plugged into the printer and a properly grounded electrical outlet. • The electrical outlet is ...
...available on . You are using a USB device For information regarding tested and approved USB flash memory devices, see our Lexmark Web site at www.lexmark.com. Held jobs do not print The printer is not securely connected Make sure you have properly configured the printer .... • Free up additional printer memory by any switch or breaker. • The printer is not plugged into any surge protectors, uninterrupted power supplies, or extension cords. • Other electrical equipment plugged into the printer and a properly grounded electrical outlet. • The electrical outlet is ...
User's Guide
Page 124
.... • The MFP is not plugged into any surge protectors, uninterrupted power supplies, or extension cords. • Other electrical equipment plugged into the outlet is working. • The MFP is turned on. • The MFP cable is available on our Lexmark Web site at least 10 seconds, and then turn the MFP off... EMEA Asia Pacific Region Latin America Online technical support Technical support is securely attached to problems that require your part. It may be possible to power the MFP off , wait at www.lexmark.com. They require no action on your intervention.
.... • The MFP is not plugged into any surge protectors, uninterrupted power supplies, or extension cords. • Other electrical equipment plugged into the outlet is working. • The MFP is turned on. • The MFP cable is available on our Lexmark Web site at least 10 seconds, and then turn the MFP off... EMEA Asia Pacific Region Latin America Online technical support Technical support is securely attached to problems that require your part. It may be possible to power the MFP off , wait at www.lexmark.com. They require no action on your intervention.
Service Manual
Page 8
... panel left cover assembly removal 4-61 Operator panel right cover assembly removal 4-64 Touchscreen bezel removal 4-66 LCD touchscreen removal-models X644e and X646e 4-67 LCD touchscreen removal-model X642e 4-69 Multipurpose feeder/lower front cover assembly removal 4-71 Left cover handle holder... removal 4-105 Interface card assembly removal 4-107 LCD inverter card assembly removal 4-108 Low voltage power supply removal 4-109 Main fan removal 4-111 Main drive assembly removal 4-113 Modem removal 4-115 MPF arm assembly removal 4-116 MPF lower paper deflector 4-117 MPF pick tire ...
... panel left cover assembly removal 4-61 Operator panel right cover assembly removal 4-64 Touchscreen bezel removal 4-66 LCD touchscreen removal-models X644e and X646e 4-67 LCD touchscreen removal-model X642e 4-69 Multipurpose feeder/lower front cover assembly removal 4-71 Left cover handle holder... removal 4-105 Interface card assembly removal 4-107 LCD inverter card assembly removal 4-108 Low voltage power supply removal 4-109 Main fan removal 4-111 Main drive assembly removal 4-113 Modem removal 4-115 MPF arm assembly removal 4-116 MPF lower paper deflector 4-117 MPF pick tire ...
Service Manual
Page 9
... 5-3 Autoconnect 5-8 Fuser board 5-9 High voltage power supply 5-9 Interface card 5-10 USB card 5-10 Low voltage power supply 5-11 Operator panel card (UICC #1)-model X642e 5-12 Operator panel card (UICC #1)-models X644e/X646e 5-14 LCD inverter board (IUCC #2 5-16 Scanner control card 5-17 Motor driver board 5-23 Flatbed interconnect card 5-26 Modem card 5-31 Preventive maintenance 6-1 Safety...
... 5-3 Autoconnect 5-8 Fuser board 5-9 High voltage power supply 5-9 Interface card 5-10 USB card 5-10 Low voltage power supply 5-11 Operator panel card (UICC #1)-model X642e 5-12 Operator panel card (UICC #1)-models X644e/X646e 5-14 LCD inverter board (IUCC #2 5-16 Scanner control card 5-17 Motor driver board 5-23 Flatbed interconnect card 5-26 Modem card 5-31 Preventive maintenance 6-1 Safety...
Service Manual
Page 10
...Assembly 18: Drives-Main drive and developer drive 7-32 Assembly 19: Hot roll fuser 7-34 Assembly 20: Transfer/charging 7-36 Assembly 21: Electronics-power supplies 7-38 Assembly 22: Electronics-card assemblies 7-40 Assembly 23: Electronics-shields 7-42 Assembly 24: Cabling diagram 1 7-43 Assembly 25: Cabling diagram... 2 7-44 Assembly 26: Cabling diagram 3 7-45 Assembly 27: Cabling diagram 4-model X642e 7-46 Assembly 28: Cabling diagram 4-models X644e/X646e 7-48 Assembly 29: Cabling diagram 5 7-50 Assembly 30: Cabling diagram 6-model X642e 7-52 Assembly 31: Cabling diagram 6-models...
...Assembly 18: Drives-Main drive and developer drive 7-32 Assembly 19: Hot roll fuser 7-34 Assembly 20: Transfer/charging 7-36 Assembly 21: Electronics-power supplies 7-38 Assembly 22: Electronics-card assemblies 7-40 Assembly 23: Electronics-shields 7-42 Assembly 24: Cabling diagram 1 7-43 Assembly 25: Cabling diagram... 2 7-44 Assembly 26: Cabling diagram 3 7-45 Assembly 27: Cabling diagram 4-model X642e 7-46 Assembly 28: Cabling diagram 4-models X644e/X646e 7-48 Assembly 29: Cabling diagram 5 7-50 Assembly 30: Cabling diagram 6-model X642e 7-52 Assembly 31: Cabling diagram 6-models...
Service Manual
Page 38
... Read-Only Memory Electrostatic Discharge Field Replaceable Unit Gigabyte High-Capacity Input Tray High Voltage Power Supply Internal Tray Card Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode Lexmark Embedded Solution (applications) Low Voltage Power Supply Motor Driver Control Multifunction Printer Multipurpose Feeder Nonvolatile Random Access Memory Optical Sensor Photoconductor...
... Read-Only Memory Electrostatic Discharge Field Replaceable Unit Gigabyte High-Capacity Input Tray High Voltage Power Supply Internal Tray Card Light Amplification by Stimulated Emission of Radiation Liquid Crystal Display Light-Emitting Diode Lexmark Embedded Solution (applications) Low Voltage Power Supply Motor Driver Control Multifunction Printer Multipurpose Feeder Nonvolatile Random Access Memory Optical Sensor Photoconductor...
Service Manual
Page 71
... in gearbox assembly 939 .00 RIP-engine communications lost. If correct, replace the LVPS assembly. See "System board and inner shield removal -models X644e/X646e" on page 4-131. Motor is type 1. Go to make sure the LVPS to be displayed, replace the system board. Diagnostic information ...continues to system board cable is installed, check to make sure the correct LVPS assembly has been installed. If the correct supply is installed correctly. See "Low voltage power supply removal" on page 2-120. or go to "950.30 through 950.29 EPROM mismatch failure" on page 4-109.
... in gearbox assembly 939 .00 RIP-engine communications lost. If correct, replace the LVPS assembly. See "System board and inner shield removal -models X644e/X646e" on page 4-131. Motor is type 1. Go to make sure the LVPS to be displayed, replace the system board. Diagnostic information ...continues to system board cable is installed, check to make sure the correct LVPS assembly has been installed. If the correct supply is installed correctly. See "Low voltage power supply removal" on page 2-120. or go to "950.30 through 950.29 EPROM mismatch failure" on page 4-109.
Service Manual
Page 164
... system board and to the scanner control card. Reconnect the AC line cord and measure the voltage on CN2-1 on page 4-109. See "Low voltage power supply removal" on the LVPS. If correct, go to step 4. Note: Use care not to short adjacent voltage test points. 4 System board 5 LVPS If...any feature or option cards are removed or replaced. Check to make sure the LVPS cable is incorrect, replace the LVPS assembly. See "Low voltage power supply removal" on page 4-109 Warning: Observe all ESD precautions when handling these options. If not, reseat and recheck the voltage at J27 on the...
... system board and to the scanner control card. Reconnect the AC line cord and measure the voltage on CN2-1 on page 4-109. See "Low voltage power supply removal" on the LVPS. If correct, go to step 4. Note: Use care not to short adjacent voltage test points. 4 System board 5 LVPS If...any feature or option cards are removed or replaced. Check to make sure the LVPS cable is incorrect, replace the LVPS assembly. See "Low voltage power supply removal" on page 4-109 Warning: Observe all ESD precautions when handling these options. If not, reseat and recheck the voltage at J27 on the...
Service Manual
Page 170
..., go to the fuser. If incorrect, inform the customer; CAUTION: When taking measurements for AC power, observe all safety precautions. If incorrect, replace the LVPS assembly (see "Low voltage power supply removal" on and off . CAUTION There is within operating specification. if correct, go to fuser ..., turn the printer on and measure the voltage between CN1-1 and CN1-3 on the connector (see the connector locations at "Low voltage power supply" on page 4-109); Unplug the product before starting this service check. If incorrect, install correctly; if correct, go to observe the ...
..., go to the fuser. If incorrect, inform the customer; CAUTION: When taking measurements for AC power, observe all safety precautions. If incorrect, replace the LVPS assembly (see "Low voltage power supply removal" on and off . CAUTION There is within operating specification. if correct, go to fuser ..., turn the printer on and measure the voltage between CN1-1 and CN1-3 on the connector (see the connector locations at "Low voltage power supply" on page 4-109); Unplug the product before starting this service check. If incorrect, install correctly; if correct, go to observe the ...
Service Manual
Page 171
... cable and retry the printer. See "System board and inner shield removal -models X644e/X646e" on and check the voltage. See "System board and inner shield removal -models X644e/X646e" on page 4-109. • System board assembly. See "Low voltage power supply removal" on page 4-131. • LVPS. If no problem is installed correctly...
... cable and retry the printer. See "System board and inner shield removal -models X644e/X646e" on and check the voltage. See "System board and inner shield removal -models X644e/X646e" on page 4-109. • System board assembly. See "Low voltage power supply removal" on page 4-131. • LVPS. If no problem is installed correctly...
Service Manual
Page 172
...CN1 on the LVPS board (see the connector locations at "Low voltage power supply" on and off and allowing it is correct, unplug the AC power cord from the LVPS cable and pull the LVPS out far enough to...on and measure the voltage between CN1-1 and CN1-3 on the connector (see "Low voltage power supply removal" on the fuser end of the product where you begin, or use caution if ...to fuser AC cable, plug in order to step 2. If incorrect, replace the LVPS assembly (see "Low voltage power supply removal" on page 4-109. if correct, go to fuser AC cable; Plug the AC line cord into the printer...
...CN1 on the LVPS board (see the connector locations at "Low voltage power supply" on and off and allowing it is correct, unplug the AC power cord from the LVPS cable and pull the LVPS out far enough to...on and measure the voltage between CN1-1 and CN1-3 on the connector (see "Low voltage power supply removal" on the fuser end of the product where you begin, or use caution if ...to fuser AC cable, plug in order to step 2. If incorrect, replace the LVPS assembly (see "Low voltage power supply removal" on page 4-109. if correct, go to fuser AC cable; Plug the AC line cord into the printer...
Service Manual
Page 173
..., check the fuser to system board cable for any signs of damage. If no problem is found up to this service check. See "Low voltage power supply removal" on the fuser control card. If a problem is found , replace the fuser top cover assembly."Fuser narrow media sensor removal" on page 4-....xx, 924.xx, and 925.xx may be greater than 100K ohms. If correct, go to step 3; See "System board and inner shield removal -models X644e/X646e" on page 4-88. FRU 1 Fuser assembly 2 Fuser top cover assembly (thermistor) 3 System board Fuser top cover assembly Action Check for a hot fuser ...
..., check the fuser to system board cable for any signs of damage. If no problem is found up to this service check. See "Low voltage power supply removal" on the fuser control card. If a problem is found , replace the fuser top cover assembly."Fuser narrow media sensor removal" on page 4-....xx, 924.xx, and 925.xx may be greater than 100K ohms. If correct, go to step 3; See "System board and inner shield removal -models X644e/X646e" on page 4-88. FRU 1 Fuser assembly 2 Fuser top cover assembly (thermistor) 3 System board Fuser top cover assembly Action Check for a hot fuser ...
Service Manual
Page 178
...5 ohms and 10 ohms. If incorrect, replace the fuser assembly. Make sure the cable is connected correctly, go to step 4. See "Low voltage power supply removal" on . Reconnect the cable, if necessary. The voltage should measure approximately +50 V dc. If correct, replace the system board. 7002-xxx... on page 4-2. See "System board and inner shield removal-model X642e" on page 4-130 or "System board and inner shield removal -models X644e/ X646e" on the LVPS. If the cable is connected properly to step 5. If no problems were found in steps 1 through 4, replace the fuser...
...5 ohms and 10 ohms. If incorrect, replace the fuser assembly. Make sure the cable is connected correctly, go to step 4. See "Low voltage power supply removal" on . Reconnect the cable, if necessary. The voltage should measure approximately +50 V dc. If correct, replace the system board. 7002-xxx... on page 4-2. See "System board and inner shield removal-model X642e" on page 4-130 or "System board and inner shield removal -models X644e/ X646e" on the LVPS. If the cable is connected properly to step 5. If no problems were found in steps 1 through 4, replace the fuser...
Service Manual
Page 359
.... 7002-xxx High voltage power supply removal CAUTION There is a danger from hazardous voltage in order to perform the task. 1. Remove the inner paper deflector. See "Printer right cover removal" on page 4-101. 2. Unplug the product before you begin, or use caution if the product must receive power in the area of the...
.... 7002-xxx High voltage power supply removal CAUTION There is a danger from hazardous voltage in order to perform the task. 1. Remove the inner paper deflector. See "Printer right cover removal" on page 4-101. 2. Unplug the product before you begin, or use caution if the product must receive power in the area of the...
Service Manual
Page 369
Low voltage power supply removal CAUTION Unplug the printer before you begin. 7002-xxx 1. See "Pass thru plate" on page 4-58. 3. The cable is difficult to system board cable. ...
Low voltage power supply removal CAUTION Unplug the printer before you begin. 7002-xxx 1. See "Pass thru plate" on page 4-58. 3. The cable is difficult to system board cable. ...
Service Manual
Page 370
Remove the low voltage power supply. 4-110 Service Manual Pull the LVPS assembly far enough out from the right side of the printer to disconnect the fuser to remove from the printer. Do not use excessive force in the removal. 7. Warning: The LVPS assembly may be difficult to LVPS AC lamp cable (D). 7002-xxx 6.
Remove the low voltage power supply. 4-110 Service Manual Pull the LVPS assembly far enough out from the right side of the printer to disconnect the fuser to remove from the printer. Do not use excessive force in the removal. 7. Warning: The LVPS assembly may be difficult to LVPS AC lamp cable (D). 7002-xxx 6.
Service Manual
Page 409
Fuser board Fuser Board (not a FRU) High voltage power supply Connector CN1 System board Connectors J1-System board J2-Narrow media sensor J3-N/A J4-Solenoid J5-Exit sensor J6-Thermistor 7002-xxx CN no. 1 2 3 4 5 6 7 8 Signal Developer PWM +24 V dc Return Charge PWM +24 V dc IN TX PWM TX Enable TX CUR PWM SVRO OUT Locations and connections 5-9
Fuser board Fuser Board (not a FRU) High voltage power supply Connector CN1 System board Connectors J1-System board J2-Narrow media sensor J3-N/A J4-Solenoid J5-Exit sensor J6-Thermistor 7002-xxx CN no. 1 2 3 4 5 6 7 8 Signal Developer PWM +24 V dc Return Charge PWM +24 V dc IN TX PWM TX Enable TX CUR PWM SVRO OUT Locations and connections 5-9
Service Manual
Page 411
Low voltage power supply Connector CN1 Fuser lamp AC CN2 DC output 7002-xxx CN pin no. 1 2 3 Signal AC fuser lamp Not used AC fuser lamp 1 +5 V dc 2 +5 V dc 3 Ground 4 Ground 5 Ground 6 Ground 7 +24 V dc 8 +24 V dc 9 Heat on 10 +5 V dc 11 +5 V dc 12 Ground 13 Ground 14 Ground 15 Ground 16 +24 V dc 17 ZC Out* 18 +42 V dc Locations and connections 5-11
Low voltage power supply Connector CN1 Fuser lamp AC CN2 DC output 7002-xxx CN pin no. 1 2 3 Signal AC fuser lamp Not used AC fuser lamp 1 +5 V dc 2 +5 V dc 3 Ground 4 Ground 5 Ground 6 Ground 7 +24 V dc 8 +24 V dc 9 Heat on 10 +5 V dc 11 +5 V dc 12 Ground 13 Ground 14 Ground 15 Ground 16 +24 V dc 17 ZC Out* 18 +42 V dc Locations and connections 5-11
Service Manual
Page 433
...inspection guide is necessary to aid you correct the hazard. Preventive maintenance 6-1 See "Maintenance Page Count" on /off switch and the power supply. • Damaged, missing, or altered covers, especially in identifying unsafe conditions. It is to replace the fuser assembly, transfer roller... be reset to zero to maintain the print quality and reliability of the top cover and the power supply cover. • Possible safety exposure from any non-Lexmark attachments. Preventive maintenance This chapter describes procedures for this interval to clear the "80 Scheduled Maintenance"...
...inspection guide is necessary to aid you correct the hazard. Preventive maintenance 6-1 See "Maintenance Page Count" on /off switch and the power supply. • Damaged, missing, or altered covers, especially in identifying unsafe conditions. It is to replace the fuser assembly, transfer roller... be reset to zero to maintain the print quality and reliability of the top cover and the power supply cover. • Possible safety exposure from any non-Lexmark attachments. Preventive maintenance This chapter describes procedures for this interval to clear the "80 Scheduled Maintenance"...