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Lexmark T640 - Page 156

Lexmark T640
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2-114 Service Manual
4061-xx0
Tray 1 not recognized as being installed; unable to clear Tray 1 Missing message
FRU Action
1 Tray 1 Check Tray 1 for damaged or broken autosize fingers. Check for
anything that would prevent the autosize fingers from activating the
paper activate springs and ITC switches.
If a problem is found, repair or replace the tray assembly. If no
problem is found, go to step 2.
2
Integrated card/
autocompensator cable
Check for correct installation of the cable at J26 on the system board.
If installed correctly, go to step 3. If incorrectly installed, install and
recheck the printer.
3
System board Check the continuity between J26-2 on the system board and
ground. It should measure approximately 0 ohms.
A
5
B5
EXEC
LTR
A4
L
G
L
S
W
2
S
W
1
S
W
0

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