Brother HL-5240 Service Manual page 142

CHAPTER 4 TROUBLESHOOTING
(4) Curl or Wave
User Check
(1) Check the paper used meets the recommended paper specifications. Both high temperature and
humidity will cause paper to curl.
(2) If the printer is used infrequently, the paper may have sat for too long in the paper tray. Turn over
the stack of paper in the paper tray. Also, try rotating the paper 180° in the paper tray.
(3) Check that the paper used meets the Media Type setting in the driver.
NOTE:
For no paper supplied as the cause of a malfunction, refer to
Chapter.
(5) Prints only single side of the paper when duplex-printing
User Check
Check the size of the paper used meets the recommended paper specifications (A4 or Letter, Legal).
(6) Paper pickup
Possible cause
Disconnection of
the pickup
solenoid
harness
Pickup solenoid
harness failure
Pressure plate
gear damage
Clutch gear
damage
Step Check
1 Is the harness of the pickup
solenoid disconnected?
2 Does the harness of the pickup
solenoid work correctly?
3 Is the pressure plate gear
damaged?
4 Is the clutch gear damaged?
5. "MALFUNCTIONS" in this
Result
Yes Reconnect the harness.
No Replace the pickup solenoid.
Yes Replace the pressure plate
gear.
Yes Replace the gear unit.
4-28
Remedy
Confidential