Samsung ML-1740/XSH, Service Laser Printer Ml-1740/Xsh Manual, Page: 68 / 107

7-8
T RO U B L E S H O OT I N G
Samsung Electronics
Service Manual
7.2.1 Wrong Print Position
• Description Printing begins at wrong position on the paper.
Check and Cause Solution
Wrong sense time caused by defective feed sensor
actuator. Replace the defective actuator
Check and Cause Solution
1. Check the Solenoid by using DCU diagnostic mode
06.
2. Check if the pad is loose due to bad sealing of the
side-pad.
3. Check the surface of the roller-pickup for foreign mat-
ter.
4. If the paper feeds into the printer rand Jam 0 occurs,
perform DCU to check feed-sensor of the engine
board.
1. Replace the solenoid.
2. Replace the side-pad Assembly L or R, if necessary.
3. Clean with soft cloth dampened with IPA(Isopropyl
Alcohol) or water.
4. Replace the SMPS-HVPS and/or Sensor.
7.2.2 JAM 0
• Description
1. Paper is not exited from the cassette.
2. Jam-0 occurs if the paper feeds into the printer.
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
7.2 bad discharge