Lexmark T520 Service Manual page 94

Infoprint 1120 and 1125
The base printer does not recognize that the high-capacity input
tray is installed.
FRU
1 High-Capacity Feeder
Autoconnect Mechanical
Check
2 Base Printer or option
mounted above
3 LVPS
Option System Board
Action
Check the high capacity feeder input
tray to make sure it is mounted
correctly and is not pushed down
into the frame assembly or
damaged. Be sure the high capacity
feeder input tray autoconnect is
properly connected to the high
capacity feeder tray option board
assembly.
Check the option or base printer
autoconnect for signs of damage.
Repair the high capacity option
autoconnect as necessary.
Check the voltages at J11-2 and
J11-4. The voltage measures
+24 V dc, If the voltage is correct,
replace the high capacity system
board assembly. If the voltage is
incorrect, check the continuity of the
AC input cable to the LVPS. If
correct, replace the LVPS assembly.
If incorrect, replace the AC cable to
the input of the LVPS.
Diagnostic Information
2-67