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Troubleshooting
Samsung Electronics
Service Manual
7.4 Printer Faults – Causes and Solutions
7.4.1 Fuser Error
• Description
A message "Open Heat Error/Over heat/Heating Error' is displayed in the LCD panel.
Check and Cause Solution
1. Thermostat, fuser power cable or heat lamp is
open circuit.
2. Thermistor is open circuit.
3. Heat lamp ON/OFF test
4. Drive gear melted
1. Replace the whole fuser assembly if the
thermostat is open circuit.
2. Replace the whole fuser assembly if the ther-
mistor sensor is faulty.
3. Replace the fuser.
7.4.2 LSU Error
• Description
A message "PMOTOR ERROR/HSYNC ERROR' is displayed in the LCD panel.
Check and Cause Solution
1. LSU cable or connector faulty.
2. LSU motor is faulty.
3. Check the HSYNC signal.
Use
TECH
mode to test the LSU
- Replace the LSU
- Replace a main board if the same error persists after
replacing a LSU.
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