Cover Interlock Switch Service Check (E220/E321/E323) - Lexmark E320 - Printer - B/W Service Manual

4500

Cover interlock switch service check (E220/E321/E323)

Note: Make sure a toner cartridge is installed and the cover closes
all the way, engaging the cover open switch lever.
FRU
Cover interlock switch
2-70
Service Manual
Action
Disconnect the cover interlock cable
from the controller card at J6.
Verify continuity between cable
pin 1 and pin 2 with the door closed.
Verify continuity between cable
pin 1 and pin 3 with the door open.
• If either fail continuity, replace the
cover interlock switch.
• If both pass continuity, turn the
printer on and verify +5 V dc on
pin 2 at J6 on the card.
• Verify pins1 and 3 are ground.
• If voltage or ground is not present,
see "Controller card service
check (E220/E321/E323) " on
page 2-67 for more information.
Verify discontinuity between pins 2
and 3 whether the door is open or
closed.
Replace the cover interlock switch if
faulty.