Samsung ML-1755, Service Manual, Page: 66 / 116

7-9
Samsung Electronics
T RO U B L E S H O OT I N G
Training Manual
Check and Cause Solution
1. If the recording paper is jammed in front of or inside
the fuser. (Perform DCU diagnostic code 08)
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 defective.
1. Replace the SMPS.
2. Reassemble the Actuator-Feed and Spring-Actuator
if the returning is bad.
7.2.3 JAM 1
• Description
1. Recording paper is jammed in front of or inside the fuser.
2. Recording paper is stuck in the discharge roller and in the
fuser just after passing through the Actuator-Feed.
PTL
P I
C
K
/R
PR
CR
DR
SR
TR FR
Empty Sensor
OPC
L S U
Fuser
Toner Cartridge
EXIT
Sensor
Feed
Sensor
MP Sensor
Check and Cause Solution
1. If the paper is completely fed out of the printer, but Jam
2 occurs : Exit sensor is defective.
• After the paper is completely discharged, 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 contaminated with the toner.
3. Paper is accordion in the fuser.
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 : disassemble the
fuser and remove the jammed paper, and clean the
surface of the pressure roller with dry gauze.
3. Remove the jammed paper after disassembling the
fuser : Clean the surface of the pressure roller with
dry gauze.
• Remove the toner particles stained on the rib.
• Check the assemblage and performance of the exit.
7.2.4 JAM 2
• Description
1. Recording paper is jammed in front of or inside the fuser.
2. Recording paper is stuck in the discharge roller and in the
fuser just after passing through the Actuator-Feed.
PTL
P I
C
K
/R
PR
CR
DR
SR
TR FR
Empty Sensor
OPC
L S U
Fuser Toner Cartridge
EXIT
Sensor
Feed
Sensor
MP Sensor