Lexmark X 204 Service Manual

Diagnostic information2-25
7011-2xx / 3xx
Controller card service check 
FRU Action
Controller card assembly Verify +24 V dc input from the LVPS/HVPS. 
• Turn the MFP off. 
• Disconnect the LVPS/HVPS cable from the controller card at 
J22. See “Controller card” on page 5-4 for more 
information. 
• Turn the MFP on.
Verify +24 V dc from the cable connector of J22, pins 8 and 9. 
Verify that pins 7, 12, and 14 on both the cable and the card 
connectors are ground. 
• If voltage is correct, check the...

2-26Service Manual 7011-2xx / 3xx
Cover interlock switch service check 
Note:  Make sure a print cartridge assembly is installed and the cover closes all the way, engaging the cover 
open switch lever. 
Dead machine service check
CAUTIONCheck the AC line voltage. The voltage should be within the following limits:
•100 V ac (volts alternating current) – 127 V ac for the 110 V MFP
•200 V ac – 240 V ac for the 220 V MFP FRU Action
Cover interlock switch Check the cover interlock cable to make sure it is not...

Diagnostic information2-27
7011-2xx / 3xx
Fuser service check 
When toner is partially fused to the paper, it is usually caused by low fuser temperature.
Note:  Improper fusing can result from incorrect media setting’s in the driver, or on the MFP. Check those 
setting’s before servicing the fuser.
Note:  Make sure the correct voltage fuser is being used on the MFP.
Warning:  Avoid handling the lamp as much as possible, as it is easily broken. Be careful not to touch the glass 
housing with bare hands,...

2-28Service Manual 7011-2xx / 3xx
Hot fuser service check
Note:  Ensure correct fuser is installed. 
LVPS/HVPS service check 
FRU Action
Fuser AC cables
LVPS/HVPS 
FuserMeasure the resistance of the thermistor. The resistance measures 
from approximately 1K ohms immediately after printing or POR to 
approximately 240K ohms when thermistor reaches room 
temperature. (It may take 30 minutes to cool.) 
Replace the fuser assembly as necessary. 
FRU Action
LVPS/HVPSLVPS portion of board 
Fuses that open...

Diagnostic information2-29
7011-2xx / 3xx
Main motor service check 
Modem service check
Networking service check
Note:  Before starting this service check, print out the network setup page. This page is found under Menu - 
Reports - Network setting’s. Consult the network administrator to verify that the physical network setting’s 
displayed on the network setting’s page for the device are properly configured. For more network 
troubleshooting information, consult the Lexmark Network Setup Guide.FRU...

2-30Service Manual 7011-2xx / 3xx
5Does the IP address displayed on the network 
setting’s page match the IP address in the port 
of the drivers using the printer?Go to step 10. Go to step 6.
6Does the LAN use DHCP?
Note: A printer should use a static IP 
address on a network.Go to step 7. Go to step 9.
7Are the first two segments if the IP address 
169.254?Go to step 8. Go to step 9
8POR the printer. 
Is the problem resolvedProblem resolved Go to step 10.
9Reset the address on the printer to match the...

Diagnostic information2-31
7011-2xx / 3xx
Operator panel service check
Inspect the operator panel cable for damage. Make sure the cable is plugged in securely.
POR the MFP, and check each light for proper operation.
Operator panel service check 
FRU Action
Operator panel
Controller cardButtons
Check connector J4, pin 2 for 3.3 V. 
If the voltage is present, replace the 
operator panel. If the voltage is not 
present, replace the controller card.
Perform the panel test and button 
tests found in...

2-32Service Manual 7011-2xx / 3xx
Paperpath sensor service check
Printhead service check
FRU Action
All sensors
MPF sensor
Exit sensor
Paper in sensor
Controller cardCheck all the sensor flags for breakage or if they are jammed.
Check all the sensors for dirt.
Check pin 1 on connector J18 for +5V and pin 2 on J18 for +3.3 V. 
Pins 3, and 4 should be ground.
Check pin 1 on connector J8 for +5V and pin2 on J8 for +3.3V. Pin 3 
should be ground.
Check pin 1 on connector J17 for +5V and pin2 on J17 for...

Diagnostic information2-33
7011-2xx / 3xx
Paper feed service checks
Paper jam error indication during POST 
Paper picks during POST and/or continuously
Paper picks but stops half way through the MFP 
Paper never picks 
FRU Action
Exit sensor  If the exit sensor flag is not resting within the paper 
exit sensor during POST, the MFP displays a paper 
jam message. Make sure the flag is operating freely 
and is correctly installed.
Input sensor 
Input sensor #1 (under print cartridge assembly) 
and 
Input...

2-34Service Manual 7011-2xx / 3xx
Paper occasionally picks or picks multiple sheets at once 
Paper “trees,” wrinkles, stacks poorly or curls 
A4, oversized paperfeed service check
FRU Action
Tray 1  Check tray for paper catch points. 
If the sheet being fed stops momentarily, the ACM applies 
additional vertical force causing additional sheets to feed. 
Do not mix paper types. 
Paper pick tires Check the tires in the ACM assembly for signs of wear or 
damage.
Replace the tires as necessary.
ACM clutch...