Lexmark T632 Service Manual - Page 100

4060-xxx Internal tray card/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. SW2 SW1 SW0 CN1 1 Paper size sensing switch chart ITC CN1 pin Signal 1 PSIZE2 2 Ground 3 PSIZE1 4 PSIZE3 ITC switch SW1 Ground SW0 SW2 Paper tray size selection (X is activated) Letter Legal A4 X X Exec B5 X X X X X X A5 X System board J34 pin 1 2 3 4 Tray 1 not recognized as being installed. Unable to clear Tray 1 Missing message. FRU 1 Tray 1 Action 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. 2 W S 1 W S 0 W S LGL A4 LTREXBE5C A5 2 Integrated card/ autocompensator cable 3 System board If a problem is found, repair as necessary. If no problem is found, go to step 2. Check for correct installation of the cable at J34 on the system board. If installed correctly, go to step 3. If incorrectly installed, install and recheck the printer. Check the continuity between J34-2 on the system board and ground. It should measure approximately 0 ohms. 2-66 Service Manual