3HW
1-4-9
Problem
Causes
Check procedures/corrective measures
(1)
The machine does
not operate when
the power switch is
turned on.
(2)
The drawer drive
motor does not
operate.
(3)
The drawer paper
feed clutch does not
operate.
(4)
The message re-
questing paper to be
loaded is shown
when paper is
present in the
drawer.
(5)
The size of paper in
the drawer is not
displayed correctly.
(6)
A paper jam in the
paper feeder is indi-
cated when the
power switch is
turned on.
The drawer left cover is
not closed completely.
Defective drawer left cover
safety switch.
Poor contact in the drawer
drive motor connector ter-
minals.
Broken drawer drive motor
gear.
Defective drawer drive mo-
tor.
Defective drawer main
PCB.
Broken drawer paper feed
clutch coil.
Poor contact in the drawer
paper feed clutch connec-
tor terminals.
Defective drawer main
PCB.
Poor contact in the drawer
paper switch connector
terminals.
Defective drawer paper
switch.
Poor contact in the drawer
paper size length switch
connector terminals.
Defective drawer paper
size length switch.
Poor contact in the drawer
paper size width switch
connector terminals.
Defective drawer paper
size width switch.
A piece of paper torn from
copy paper is caught
around drawer feed switch.
Defective drawer feed
switch.
Check the drawer left cover.
Check for continuity across the contacts of switch. If none, re-
place the switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check visually and replace the drawer drive motor if necessary.
Run maintenance item U030 and check if the drawer drive motor
operates when YC9-2,3,4,5 on the drawer main PCB goes low.
If not, replace the drawer drive motor.
Run maintenance item U030 and check if YC9-2,3,4,5 on the
drawer main PCB goes low. If not, replace the drawer main
PCB.
Check for continuity across the coil. If none, replace the drawer
paper feed clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC8-2 on the drawer
main PCB goes low. If not, replace the drawer main PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
If the level of YC5-2 on the drawer main PCB does not change
when the drawer paper switch is turned on and off, replace the
drawer paper switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if YC4-5,6,8 on the drawer main PCB goes low when the
drawer paper size length switch is turned on. If not, replace the
drawer paper size length switch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if YC4-4 on the drawer main PCB goes low when the
drawer paper size width switch is turned on. If not, replace the
drawer paper size width switch.
Check and remove if any.
Run maintenance item U031 and turn drawer feed switch on and
off manually. Replace drawer feed switch if indication of the cor-
responding sensor is not light.
1-4-4 Electrical problems
