Lexmark C 950 Service Manual

Diagnostic aids 3-19
  5058-030
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To perform the Button Test:
1.From the Diagnostics Menu, navigate to HARDWARE TESTS.
2.Select Button Test. The LCD displays a graphic of the operator panel buttons that matches the layout of 
the operator panel buttons.
3.Press any button on the operator panel. Every time a button is pressed, the equivalent button graphic on 
the LCD appears shaded. When the button is released, the shading is removed.
DRAM Test
The DRAM Test is used to check the...

3-20  Service Manual 5058-030  
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To run this test:
1.From the Diagnostics Menu, navigate to INPUT TRAY TESTS.
2.Select the appropriate input source from the following choices: 
•Tray 1
•Tray 2
•Tray 3
•Tray 4
•Multi-Purpose Feeder
3.Touch either Single or Continuous. 
•Single—Feeds one sheet of media from the selected source.
•Continuous—Media continues feeding from the selected source until Stop is pressed.
MOTOR TESTS
PRINTER MOTOR TESTS
To run these tests:
1.From the Diagnostics...

Diagnostic aids 3-21
  5058-030
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FINISHER MOTOR TESTS
To run these tests:
1.From the Diagnostics Menu, navigate to MOTOR TESTS.
2.Select FINISHER MOTOR TESTS.
3.Select the test from the following options:
OUTPUT BIN TESTS
Feed Tests (Output Bin)
This test is used to verify that media from the device’s default input source can be fed to a specific output bin. No 
information is printed on the feed test pages.
To run the Feed Tests for the output bins:
1. From the Diagnostics Menu,...

3-22  Service Manual 5058-030  
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While this test runs, [Selected Output Bin] Feeding...appears on the LCD. During Single tests, no buttons are 
active. However, during Continuous tests, you can press Stop to cancel the test.
Feed To All Bins
This test is used to verify that the device can feed media to all installed output destinations. No information is 
printed on the feed test pages since the printhead LED is not engaged during this test.
PRINT TESTS
This menu’s settings enable a...

Diagnostic aids 3-23
  5058-030
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To change this setting:
1.From the Diagnostics Menu, navigate to PRINTER SETUP.
2.Select Par 1 Strobe Adj.
3.Touch  or  to change the value.
4.Touch Submit to save the setting, or touch Back to return to the Diagnostics Menu without saving any 
changes.
Permanent Page Count
The value of this setting indicates the total number of pages that have been printed by the device.
Reset Color Calibration
This setting enables the device to adjust the alignment...

3-24  Service Manual 5058-030  
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FINISHER SENSOR TESTS
This test verifies that the sensors in the finisher are operating properly.
To run these tests:
1.From the Diagnostics Menu, navigate to SENSOR TESTS.
2.Select FINISHER SENSOR TESTS.
3.Select the test from the following options:
• Sensor (tray 1 media out)• Sensor (fuser exit)
• Sensor (tray 1 media level)• Sensor (paper on belt)
• Sensor (tray 1 media size switch)• Sensor (registration)
• Sensor (tray 1 pre feed)• Sensor (MPF...

Diagnostic aids 3-25
  5058-030
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• Sensor (diverter gate)• Sensor (punch cam front)
• Sensor (upper media exit)• Sensor (punch cam hole select)
• Sensor (lower media exit)• Sensor (punch unit motor encoder)
• Sensor (compiler media present)• Sensor (punch waste box set)
• Sensor (bridge media entrance)• Sensor (bridge bin exit)
• Sensor (bridge media exit)• Sensor (deculer cam HP)
• Sensor (punch side reg 1)• Sensor (eject cover interlock)
• Sensor (punch side reg 2)• Sensor...

3-26  Service Manual 5058-030  
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Service Engineer (SE) Menu
Print SE Menus
General
Copyright—Displays copyright information
Optra Forms mode—On or off
Code Revision Info
Network Code Level—Displays network code level
Network Compile Info—Displays compile information
Printer Code Level —Displays printer code information
Printer Compile Info—Displays compile information
History
Print History
Mark History
History Mode
MAC
Set Card Speed
Set LAA
Keep Alive
NVRAM
Dump NVRAM
Reinit NVRAM...

Diagnostic aids 3-27
  5058-030
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Paper jams
Avoiding jams
Paper tray recommendations
•Make sure the paper lies flat in the tray.
•Do not remove a tray while the printer is printing.
•Do not load a tray while the printer is printing. Load it prior to printing, or wait for a prompt to 
load it.
•Do not load too much paper. Make sure the stack height does not exceed the indicated 
maximum height.
•Make sure the guides in the tray or the multipurpose feeder are properly positioned and...

3-28  Service Manual 5058-030  
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Understanding jam numbers and locations
When a jam occurs, a message indicating the jam location appears on the display. Open doors and covers and 
remove trays to access jam locations. To resolve any paper jam message, you must clear all jammed paper 
from the paper path.
# Area nameError 
codeInstructions Go to page
1 Cover F 281
4yy.xxOpen cover F, and then remove the jammed paper.3-41, 
3-44
2 Door G 455
4yy.xxOpen door G, and then remove the...