Jam 1; Jam 2 - Samsung ML-1440 Service Manual

Troubleshooting

4-3-3 JAM 1

EXIT2
FACE DOWN
OUT BIN FULL SEN
1. Recording paper is jammed in front of or inside the fuser.
LSU LSU
FACE UP FACE UP
• Description 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the
CARTRIDGE CARTRIDGE
FUSER FUSER
Actuator-Feed.
H/R
EXIT1 EXIT1
IDLE
Pr/R
FEED
TR
PI C K UP
EMPTY SEN
EXIT SEN
EXIT SEN
CASSETTE
JAM 1

4-3-4 JAM 2

1. Recording paper is jammed in front of or inside the fuser.
• Description 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the
EXIT2
FACE DOWN
OUT BIN FULL SEN
Actuator-Feed.
LSU LSU
FACE UP FACE UP
CARTRIDGE CARTRIDGE
FUSER FUSER
H/R
EXIT1 EXIT1
IDLE
Pr/R
FEED
TR
PI C K UP
EMPTY SEN
EXIT SEN
EXIT SEN
CASSETTE
JAM 2
4-14
Check and Cause
1. If the recording paper is jammed in
front of or inside the fuser.
(Perform DCU diagnostic code of)
2. If the recording paper is stuck in the
discharge roller and the fuser just
after passing through the Actuator-
Feed, Feed Actuator may be defec-
tive.
Check and Cause
1. If the paper is completely fed out of
the printer, but Jam 2 occurs : Exit
sensor is defective.
• After the paper is completely dis-
charged, actuator Exit should return
to the original position to shut the
photo-sensor. Sometimes it takes
longer hour than it should and does
not return.
2. If the paper is rolled in the Fuser Roller:
• This occurs when a Guide claw is
broken away or transformed.
• It occurs when the Spring of a Guide
claw is broken away or transformed.
• It occurs when the Heat-Roller or
Pressure-Roller is seriously contami-
nated with the toner.
3. Paper is accordion in the fuser.
Solution
1. Replace the SMPS.
2. Reassemble the Actuator-Feed and
Spring-Actuator if the returning is bad.
Solution
1. Check if the exit sensor actuator is
defective.
• Check if the actuator exit is unformed
(Check if the lever part is unformed
in shape).
• Check whether burrs occur in the
assembly part of the actuator exit or
not and if the actuator is smoothly
operated.
• Check if foreign matters and wire get
caught in the actuator exit's operation.
2. If the paper is stuck in the fuser : dis-
assemble the fuser and remove the
jammed paper, and clean the surface
of the pressure roller with dry gauze.
3. Remove the jammed paper after disas-
sembling the fuser : Clean the surface
of the pressure roller with dry gauze.
• Remove the toner particles stained
on the rib.
• Check the assemblage and perfor-
mance of the exit.
Samsung Electronics