Lexmark E320 Service Manual - Page 100

Cover interlock switch service check (E220/E321/E323), Service Manual

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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 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. 2-70 Service Manual

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2-70
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
Action
Cover interlock switch
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.