Kyocera TASKalfa 420i Service Manual page 217

Problem
(18) 1. A piece of paper torn
A paper jam in the
paper feed, paper
conveying, fuser,
eject or duplex sec-
tion is indicated when
the main power
switch is turned on.
2. Defective feed switch 1/
(19) 1. Poor contact in the con-
The message
requesting cover to
be closed is dis-
played when the front
2. Defective front cover
cover or left cover 1/2
is closed.
(20) 1. Wiring is broken, shorted
Others.
Causes
from copy paper is
caught around feed
switch 1/2/3, registration
switch, feedshift switch,
eject switch or duplex
paper conveying switch.
2/3, registration switch,
feedshift switch, eject
switch or duplex paper
conveying switch.
nector terminals of front
cover switch, left cover 1/
2 switch.
switch, left cover 1 switch
or left cover 2 switch.
or makes poor contact.
Check procedures/corrective measures
Check visually and remove it, if any.
Run maintenance item U031 and turn each switch on and off
manually. Replace the switch if indication of the corresponding
switch is not displayed in reverse.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across each switch. If there is no continuity
when the switch is on, replace it.
Check for continuity. If none, repair.
2KR/2KS
1-4-59