2-158 Service Manual
7002-xxx
Paper size sensing service check
Before proceeding, check for the correct paper size loaded in the tray and that the tray has been set to accept
the size paper loaded in the tray.
Tray 1 not recognized as being installed; unable to clear Tray 1 Missing message
Paper size sensing switch chart
ITC
CN1 pin
Signal
ITC
switch
Paper tray size selection (X is activated) System
board
J34 pin
Letter Legal A4 Exec B5 A5
1 PSIZE2 SW1 X X X 1
2 Ground Ground 2
3 PSIZE1 SW0 X X X 3
4 PSIZE3 SW2 X X X 4
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.
CN1
1
SW1
SW0
SW2
A5
B5
EXEC
LTR
A4
L
G
L
S
W
2
S
W
1
S
W
0
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