Kyocera FS-1800 - Defective Paper Gauge Sensing; Defective Paper Jam Detecting; Defective Paper Size Detecting

6-27
FS-1800/1800N | FS-3800/3800N
(5) Defective paper jam detecting
(6) Defective paper gauge sensing
(7) Defective paper size detecting
Problem Suggested causes Corrective action
False paper gauge
indication.
• Surface of the paper gauge sensor 1 (PH702)
and 2 (PH703) on the sensor board (KP-
574) are dirty with paper particles.
• A piece of paper torn from a sheet is caught
around paper gauge sensor 1 (PH702) and
2 (PH703) on the paper sensor board (KP-
574).
• Reflecting mirror has come off the actuator
of paper gauge sensor 1 (PH702) and 2
(PH703).
• Defective paper gauge sensor 1 (PH702) and
2 (PH703) on the sensor board (KP-574).
• Defective engine board (KP-864).
Clean with cloth.
Check visually and
remove it, if any.
Check visually and
remove it, if any.
Replace sensor board (KP-
574). See page 5-26.
Replace engine board
(KP-864). See page 5-22.
Problem Suggested causes Corrective action
False paper size
message display.
• Defective paper size switch.
• Defective sensor board (KP-574).
• Defective engine board (KP-864).
Replace paper size switch.
Replace sensor board (KP-
574). See page 5-26.
Replace engine board (KP-
864). See page 5-22.
Problem Suggested causes Corrective action
Paper jam frequently
occurs.
False paper jam
message display.
• Surface of the registration sensor (PH701) is
dirty with paper particles.
• Actuators of registration sensor (PH701) or
exit sensor does not operate smoothly.
• Defective sensor board (KP-574), fuser board
(KP-756) or engine board (KP-864).
• A piece of paper torn from a sheet is caught
around actuator of registration sensor or exit
sensor.
Clean with cloth.
Repair or replace.
Replace sensor board (KP-
574), fuser board (KP-
756), or engine board (KP-
864). See page 5-26 and 5-
22.
Check visually and remove
it, if any.