Lexmark C750 Service Manual page 113
Service manual
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Also See for C750:
- User reference manual (218 pages) ,
- Parts breakdown (65 pages) ,
- Setup manual (62 pages)
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2000-Sheet high-capacity input tray (HCIT) (243, 244)
Use the
"HCIT Standalone Test Mode" on page 3-34
Standalone Feeding Operation to observe paper feeding from the tray and through the feed assembly. Use the
"HCIT system board LED error code table" on page 2-128
Before proceeding with this service check make sure the HCIT is installed correctly.
Step
Action and questions
1
Check for pieces of paper or other obstructions in the
feed assembly.
Are any pieces of paper or obstructions in the feed
assembly?
2
Make sure the media loaded in the paper tray meets
printer supplies specifications.
Does the media meet specifications?
3
Use the standalone feeding operation to observe paper
feeding from the tray.
Does the paper feed from the paper tray?
4
Using the standalone feeding operation test, observe
the registration motor (the registration motor is the
motor at the top of the feed assembly).
Does the motor turn?
5
Does the pick motor, the lower motor in the feed unit
assembly, turn?
6
Check the registration motor cable to HCIT system
board cable connected to CN3 for correct installation.
Is the cable connected correctly?
7
Check the pick motor cable to HCIT system board
cable connected to CN4 for correct installation.
Is the cable connected correctly?
8
Use the
"HCIT system board LED error code table"
on page
2-128.
Does the LED flash 7 times?
9
Make sure the registration home sensor cable is
installed correctly to the sensor and to CN6 on the
system board.
Is the cable connected correctly?
inside the HCIT to help isolate paper jams. Run the
to further isolate paper jam or sensor problem.
Yes
Remove any paper
or obstructions
Go to step 3
Go to step 14
Go to step 5
Go to step 8
Replace the
following FRUs in
the order shown:
1. HCIT system
board
2. Feed unit
assembly
Replace the
following FRUs in
the order shown:
1. HCIT system
board
2. Feed unit
assembly
Go to step 9
Go to step 10
Diagnostic information
5060-00x
No
Go to step 2
Inform the
customer that
media in the paper
tray does not meet
specifications
Go to step 4
Go to step 6
Go to step 7
Install the cable
correctly.
Install the cable
correctly.
Go to step 11
Install the cable
correctly.
2-79
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