Lexmark C782 Service Manual - Page 115

The printer detects paper out in tray, when adequate paper is installed in the tray.

Page 115 highlights

5061 The printer detects paper out in tray x when adequate paper is installed in the tray. Step 1 2 3 4 5 6 Actions and questions Run Tray x Sensor Test from the Diagnostics Menu. Does the test pass for Sensor L1? Check the cable connection for the paper level sensing assembly to tray x system board. Is the cable correctly installed? Check the paper level sensing assembly for correct installation. Is the paper level sensing assembly installed correctly? Check continuity of the paper level sensing assembly cable. Do you measure continuity? Check the paper level sensing assembly for correct installation. Check the following for damaged or broken parts: • Paper level sensing flag bellcrank • Paper level sensing flag • Paper level sensing flag spring Is the paper level sensing assembly installed correctly? Make sure the paper level sensing assembly arm goes all the way through the bottom of tray x. Does the arm extend all the way down through the bottom of the tray? Yes Go to step 5 Go to step 3 Go to step 4 Go to step 5 Replace the paper level sensing assembly. Recheck the arm. If the problem continues, replace the paper leveling sensing assembly. If the problem still persists, replace the tray x system board. No Go to step 2 Install the cable correctly. Reinstall the assembly if not installed correctly. Replace the cable. Go to step 6 See why the arm is not extending all the way to the bottom of the tray. Repair as necessary. Tray x does not detect size media installed Step 1 2 3 Actions and questions Is the tray set for the size paper loaded in the tray, and are the restraints in the correct location? Are there damaged or broken size sensing gears or size sensing barrel cam in the tray assembly? Check the media size sensing assembly for any signs of damaged, binding, or broken parts. Are there broken or damaged parts? Yes Go to step 2 Repair or replace defective parts. Replace the media size sensing assembly. No Set the correct size Go to step 3 Replace the electronics/size sensing assembly. Diagnostic information 2-73

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Diagnostic information
2-73
5061
The printer detects paper out in tray
x
when adequate paper is installed in the tray.
Tray
x
does not detect size media installed
Step
Actions and questions
Yes
No
1
Run Tray
x
Sensor Test from the Diagnostics Menu.
Does the test pass for Sensor L1?
Go to step 5
Go to step 2
2
Check the cable connection for the paper level sensing
assembly to tray
x
system board.
Is the cable correctly installed?
Go to step 3
Install the cable
correctly.
3
Check the paper level sensing assembly for correct
installation.
Is the paper level sensing assembly installed correctly?
Go to step 4
Reinstall the
assembly if not
installed
correctly.
4
Check continuity of the paper level sensing assembly
cable.
Do you measure continuity?
Go to step 5
Replace the
cable.
5
Check the paper level sensing assembly for correct
installation. Check the following for damaged or broken
parts:
Paper level sensing flag bellcrank
Paper level sensing flag
Paper level sensing flag spring
Is the paper level sensing assembly installed correctly?
Replace the
paper level
sensing
assembly.
Go to step 6
6
Make sure the paper level sensing assembly arm goes
all the way through the bottom of tray
x
.
Does the arm extend all the way down through the
bottom of the tray?
Recheck the arm.
If the problem
continues,
replace the paper
leveling sensing
assembly. If the
problem still
persists, replace
the tray
x
system
board.
See why the arm
is not extending
all the way to the
bottom of the
tray. Repair as
necessary.
Step
Actions and questions
Yes
No
1
Is the tray set for the size paper loaded in the tray, and
are the restraints in the correct location?
Go to step 2
Set the correct
size
2
Are there damaged or broken size sensing gears or
size sensing barrel cam in the tray assembly?
Repair or replace
defective parts.
Go to step 3
3
Check the media size sensing assembly for any signs
of damaged, binding, or broken parts.
Are there broken or damaged parts?
Replace the
media size
sensing
assembly.
Replace the
electronics/size
sensing
assembly.