Dell 1135N Service Manual page 123

Alignment and Troubleshooting
5) Multi-Feeding
Description : Multiple sheets of paper are fed at once.
1. Solenoid malfunction
(the solenoid does not work properly):
Replace the solenoid if necessary.
Perform DCU Diagnostic
Code 06.
2. Cassette holder pad is Clean the pad friction with soft
contaminated with foreign clothe dampened with IPA
matter.(oil...) (Isopropyl Alcohol).
4-50
Service Manual