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5060-00x
Tray 1 paper size sensing service check
The printer does not sense the size of the media installed in tray 1.
Note: If there is a problem when installing tray 1, tray 1 is difficult to remove or does not stay locked in position,
go to
"Tray 1 service check" on page
Step
Action and questions
1
Make sure tray 1 is installed and seated correctly in the
printer.
Is the tray correctly installed?
2
Is another 500-sheet tray available?
3
Try another 500-sheet tray in place of the internal tray 1
paper tray.
Does this fix the problem?
4
Check tray 1 for broken parts, especially the teeth on
the back restraint.
Is the back restraint broken or any of the teeth broken
or missing?
5
Check the following parts to make sure they are
installed correctly and they are not damaged or broken.
• Size sensing gear cover
• Size sensing gear
• Size sensing barrel cam
Note: Make sure the size sensing barrel cam is
correctly installed. Observe the position of the cam tab
through the size sensing gear cover. Observe the cam
position through the cover by moving the back restraint
and observe the cam detent. In the A5 media position
the detent should be visible through the opening in the
gear cover.
Are all the parts installed correctly, and not broken or
missing?
6
Make sure the following parts in the printer are
operating correctly. Check for any signs of broken or
missing parts.
• Size sensing springs
• Size sensing links
• Size sensing bracket
Are there broken or missing parts?
7
Check paper size sensing assembly to make sure that
the size sensing links correctly actuate the paper size
switches on the engine board.
Does tray 1 correctly actuate the paper size switches
on the engine board?
2-150
Service Manual
2-149.
Yes
No
Go to step 2
Install Tray 1
correctly. If there is
still a problem, go
to
"Tray 1 service
check" on
page
Go to step 3
Go to step 4
Go to step 4
Go to step 7
Replace the Back
Go to step 5
Restraint
Go to step 6
Replace tray 1.
Repair or replace
Go to step 7
parts as necessary
Replace the engine
Repair or replace
board. See
parts as necessary
"Engine board
removal" on
page 4-29
2-149.
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