Lexmark C510 Service Manual - Page 166

5021-0XX Step Questions / actions Yes No 5 If paper tray is removed, Replace I/O Go to step 6. set paper tray for desired board. See "I/O paper size and insert paper board removal" tray into printer. Using table on page 4-70. If below, check for proper problem paper size sensor action by persists, replace taking voltage readings engine controller between ground and board. See DCN19 pins 2 though 4. Is "Engine paper size sensor working controller properly? board removal" on page 4-55. 6 Check cable for continuity Replace paper Replace cable. between I/O board DCN19 size sensor. See and paper size sensor. Also "Left tray guide check for shorted pins. Is assembly cable okay? removal" on page 4-65. Paper tray setting Standard tray A4 Letter EXE B5J B51 #10 DL Legal tray DCN19 (all voltages measured from pin to ground) pin 2 pin 3 pin 4 pin 5 5 VDC 5 VDC 0 VDC 5 VDC 5 VDC 0 VDC 5 VDC 5 VDC 0 VDC 5 VDC 0 VDC 5 VDC 5 VDC 0 VDC 0 VDC 5 VDC 5 VDC 0 VDC 0 VDC 5 VDC 0 VDC 0 VDC 0 VDC 5 VDC 0 VDC 0 VDC 0 VDC 5 VDC 0 VDC 0 VDC 5 VDC 5 VDC 2-88 Service Manual